/*!
 * jQuery JavaScript Library v1.11.1
 * http://jquery.com/
 *
 * Includes Sizzle.js
 * http://sizzlejs.com/
 *
 * Copyright 2005, 2014 jQuery Foundation, Inc. and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2014-05-01T17:42Z
 */

(function( global, factory ) {

  if ( typeof module === "object" && typeof module.exports === "object" ) {
    // For CommonJS and CommonJS-like environments where a proper window is present,
    // execute the factory and get jQuery
    // For environments that do not inherently posses a window with a document
    // (such as Node.js), expose a jQuery-making factory as module.exports
    // This accentuates the need for the creation of a real window
    // e.g. var jQuery = require("jquery")(window);
    // See ticket #14549 for more info
    module.exports = global.document ?
      factory( global, true ) :
      function( w ) {
        if ( !w.document ) {
          throw new Error( "jQuery requires a window with a document" );
        }
        return factory( w );
      };
  } else {
    factory( global );
  }

// Pass this if window is not defined yet
}(typeof window !== "undefined" ? window : this, function( window, noGlobal ) {

// Can't do this because several apps including ASP.NET trace
// the stack via arguments.caller.callee and Firefox dies if
// you try to trace through "use strict" call chains. (#13335)
// Support: Firefox 18+
//

var deletedIds = [];

var slice = deletedIds.slice;

var concat = deletedIds.concat;

var push = deletedIds.push;

var indexOf = deletedIds.indexOf;

var class2type = {};

var toString = class2type.toString;

var hasOwn = class2type.hasOwnProperty;

var support = {};



var
  version = "1.11.1",

  // Define a local copy of jQuery
  jQuery = function( selector, context ) {
    // The jQuery object is actually just the init constructor 'enhanced'
    // Need init if jQuery is called (just allow error to be thrown if not included)
    return new jQuery.fn.init( selector, context );
  },

  // Support: Android<4.1, IE<9
  // Make sure we trim BOM and NBSP
  rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,

  // Matches dashed string for camelizing
  rmsPrefix = /^-ms-/,
  rdashAlpha = /-([\da-z])/gi,

  // Used by jQuery.camelCase as callback to replace()
  fcamelCase = function( all, letter ) {
    return letter.toUpperCase();
  };

jQuery.fn = jQuery.prototype = {
  // The current version of jQuery being used
  jquery: version,

  constructor: jQuery,

  // Start with an empty selector
  selector: "",

  // The default length of a jQuery object is 0
  length: 0,

  toArray: function() {
    return slice.call( this );
  },

  // Get the Nth element in the matched element set OR
  // Get the whole matched element set as a clean array
  get: function( num ) {
    return num != null ?

      // Return just the one element from the set
      ( num < 0 ? this[ num + this.length ] : this[ num ] ) :

      // Return all the elements in a clean array
      slice.call( this );
  },

  // Take an array of elements and push it onto the stack
  // (returning the new matched element set)
  pushStack: function( elems ) {

    // Build a new jQuery matched element set
    var ret = jQuery.merge( this.constructor(), elems );

    // Add the old object onto the stack (as a reference)
    ret.prevObject = this;
    ret.context = this.context;

    // Return the newly-formed element set
    return ret;
  },

  // Execute a callback for every element in the matched set.
  // (You can seed the arguments with an array of args, but this is
  // only used internally.)
  each: function( callback, args ) {
    return jQuery.each( this, callback, args );
  },

  map: function( callback ) {
    return this.pushStack( jQuery.map(this, function( elem, i ) {
      return callback.call( elem, i, elem );
    }));
  },

  slice: function() {
    return this.pushStack( slice.apply( this, arguments ) );
  },

  first: function() {
    return this.eq( 0 );
  },

  last: function() {
    return this.eq( -1 );
  },

  eq: function( i ) {
    var len = this.length,
      j = +i + ( i < 0 ? len : 0 );
    return this.pushStack( j >= 0 && j < len ? [ this[j] ] : [] );
  },

  end: function() {
    return this.prevObject || this.constructor(null);
  },

  // For internal use only.
  // Behaves like an Array's method, not like a jQuery method.
  push: push,
  sort: deletedIds.sort,
  splice: deletedIds.splice
};

jQuery.extend = jQuery.fn.extend = function() {
  var src, copyIsArray, copy, name, options, clone,
    target = arguments[0] || {},
    i = 1,
    length = arguments.length,
    deep = false;

  // Handle a deep copy situation
  if ( typeof target === "boolean" ) {
    deep = target;

    // skip the boolean and the target
    target = arguments[ i ] || {};
    i++;
  }

  // Handle case when target is a string or something (possible in deep copy)
  if ( typeof target !== "object" && !jQuery.isFunction(target) ) {
    target = {};
  }

  // extend jQuery itself if only one argument is passed
  if ( i === length ) {
    target = this;
    i--;
  }

  for ( ; i < length; i++ ) {
    // Only deal with non-null/undefined values
    if ( (options = arguments[ i ]) != null ) {
      // Extend the base object
      for ( name in options ) {
        src = target[ name ];
        copy = options[ name ];

        // Prevent never-ending loop
        if ( target === copy ) {
          continue;
        }

        // Recurse if we're merging plain objects or arrays
        if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) {
          if ( copyIsArray ) {
            copyIsArray = false;
            clone = src && jQuery.isArray(src) ? src : [];

          } else {
            clone = src && jQuery.isPlainObject(src) ? src : {};
          }

          // Never move original objects, clone them
          target[ name ] = jQuery.extend( deep, clone, copy );

        // Don't bring in undefined values
        } else if ( copy !== undefined ) {
          target[ name ] = copy;
        }
      }
    }
  }

  // Return the modified object
  return target;
};

jQuery.extend({
  // Unique for each copy of jQuery on the page
  expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),

  // Assume jQuery is ready without the ready module
  isReady: true,

  error: function( msg ) {
    throw new Error( msg );
  },

  noop: function() {},

  // See test/unit/core.js for details concerning isFunction.
  // Since version 1.3, DOM methods and functions like alert
  // aren't supported. They return false on IE (#2968).
  isFunction: function( obj ) {
    return jQuery.type(obj) === "function";
  },

  isArray: Array.isArray || function( obj ) {
    return jQuery.type(obj) === "array";
  },

  isWindow: function( obj ) {
    /* jshint eqeqeq: false */
    return obj != null && obj == obj.window;
  },

  isNumeric: function( obj ) {
    // parseFloat NaNs numeric-cast false positives (null|true|false|"")
    // ...but misinterprets leading-number strings, particularly hex literals ("0x...")
    // subtraction forces infinities to NaN
    return !jQuery.isArray( obj ) && obj - parseFloat( obj ) >= 0;
  },

  isEmptyObject: function( obj ) {
    var name;
    for ( name in obj ) {
      return false;
    }
    return true;
  },

  isPlainObject: function( obj ) {
    var key;

    // Must be an Object.
    // Because of IE, we also have to check the presence of the constructor property.
    // Make sure that DOM nodes and window objects don't pass through, as well
    if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) {
      return false;
    }

    try {
      // Not own constructor property must be Object
      if ( obj.constructor &&
        !hasOwn.call(obj, "constructor") &&
        !hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) {
        return false;
      }
    } catch ( e ) {
      // IE8,9 Will throw exceptions on certain host objects #9897
      return false;
    }

    // Support: IE<9
    // Handle iteration over inherited properties before own properties.
    if ( support.ownLast ) {
      for ( key in obj ) {
        return hasOwn.call( obj, key );
      }
    }

    // Own properties are enumerated firstly, so to speed up,
    // if last one is own, then all properties are own.
    for ( key in obj ) {}

    return key === undefined || hasOwn.call( obj, key );
  },

  type: function( obj ) {
    if ( obj == null ) {
      return obj + "";
    }
    return typeof obj === "object" || typeof obj === "function" ?
      class2type[ toString.call(obj) ] || "object" :
      typeof obj;
  },

  // Evaluates a script in a global context
  // Workarounds based on findings by Jim Driscoll
  // http://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context
  globalEval: function( data ) {
    if ( data && jQuery.trim( data ) ) {
      // We use execScript on Internet Explorer
      // We use an anonymous function so that context is window
      // rather than jQuery in Firefox
      ( window.execScript || function( data ) {
        window[ "eval" ].call( window, data );
      } )( data );
    }
  },

  // Convert dashed to camelCase; used by the css and data modules
  // Microsoft forgot to hump their vendor prefix (#9572)
  camelCase: function( string ) {
    return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
  },

  nodeName: function( elem, name ) {
    return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
  },

  // args is for internal usage only
  each: function( obj, callback, args ) {
    var value,
      i = 0,
      length = obj.length,
      isArray = isArraylike( obj );

    if ( args ) {
      if ( isArray ) {
        for ( ; i < length; i++ ) {
          value = callback.apply( obj[ i ], args );

          if ( value === false ) {
            break;
          }
        }
      } else {
        for ( i in obj ) {
          value = callback.apply( obj[ i ], args );

          if ( value === false ) {
            break;
          }
        }
      }

    // A special, fast, case for the most common use of each
    } else {
      if ( isArray ) {
        for ( ; i < length; i++ ) {
          value = callback.call( obj[ i ], i, obj[ i ] );

          if ( value === false ) {
            break;
          }
        }
      } else {
        for ( i in obj ) {
          value = callback.call( obj[ i ], i, obj[ i ] );

          if ( value === false ) {
            break;
          }
        }
      }
    }

    return obj;
  },

  // Support: Android<4.1, IE<9
  trim: function( text ) {
    return text == null ?
      "" :
      ( text + "" ).replace( rtrim, "" );
  },

  // results is for internal usage only
  makeArray: function( arr, results ) {
    var ret = results || [];

    if ( arr != null ) {
      if ( isArraylike( Object(arr) ) ) {
        jQuery.merge( ret,
          typeof arr === "string" ?
          [ arr ] : arr
        );
      } else {
        push.call( ret, arr );
      }
    }

    return ret;
  },

  inArray: function( elem, arr, i ) {
    var len;

    if ( arr ) {
      if ( indexOf ) {
        return indexOf.call( arr, elem, i );
      }

      len = arr.length;
      i = i ? i < 0 ? Math.max( 0, len + i ) : i : 0;

      for ( ; i < len; i++ ) {
        // Skip accessing in sparse arrays
        if ( i in arr && arr[ i ] === elem ) {
          return i;
        }
      }
    }

    return -1;
  },

  merge: function( first, second ) {
    var len = +second.length,
      j = 0,
      i = first.length;

    while ( j < len ) {
      first[ i++ ] = second[ j++ ];
    }

    // Support: IE<9
    // Workaround casting of .length to NaN on otherwise arraylike objects (e.g., NodeLists)
    if ( len !== len ) {
      while ( second[j] !== undefined ) {
        first[ i++ ] = second[ j++ ];
      }
    }

    first.length = i;

    return first;
  },

  grep: function( elems, callback, invert ) {
    var callbackInverse,
      matches = [],
      i = 0,
      length = elems.length,
      callbackExpect = !invert;

    // Go through the array, only saving the items
    // that pass the validator function
    for ( ; i < length; i++ ) {
      callbackInverse = !callback( elems[ i ], i );
      if ( callbackInverse !== callbackExpect ) {
        matches.push( elems[ i ] );
      }
    }

    return matches;
  },

  // arg is for internal usage only
  map: function( elems, callback, arg ) {
    var value,
      i = 0,
      length = elems.length,
      isArray = isArraylike( elems ),
      ret = [];

    // Go through the array, translating each of the items to their new values
    if ( isArray ) {
      for ( ; i < length; i++ ) {
        value = callback( elems[ i ], i, arg );

        if ( value != null ) {
          ret.push( value );
        }
      }

    // Go through every key on the object,
    } else {
      for ( i in elems ) {
        value = callback( elems[ i ], i, arg );

        if ( value != null ) {
          ret.push( value );
        }
      }
    }

    // Flatten any nested arrays
    return concat.apply( [], ret );
  },

  // A global GUID counter for objects
  guid: 1,

  // Bind a function to a context, optionally partially applying any
  // arguments.
  proxy: function( fn, context ) {
    var args, proxy, tmp;

    if ( typeof context === "string" ) {
      tmp = fn[ context ];
      context = fn;
      fn = tmp;
    }

    // Quick check to determine if target is callable, in the spec
    // this throws a TypeError, but we will just return undefined.
    if ( !jQuery.isFunction( fn ) ) {
      return undefined;
    }

    // Simulated bind
    args = slice.call( arguments, 2 );
    proxy = function() {
      return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
    };

    // Set the guid of unique handler to the same of original handler, so it can be removed
    proxy.guid = fn.guid = fn.guid || jQuery.guid++;

    return proxy;
  },

  now: function() {
    return +( new Date() );
  },

  // jQuery.support is not used in Core but other projects attach their
  // properties to it so it needs to exist.
  support: support
});

// Populate the class2type map
jQuery.each("Boolean Number String Function Array Date RegExp Object Error".split(" "), function(i, name) {
  class2type[ "[object " + name + "]" ] = name.toLowerCase();
});

function isArraylike( obj ) {
  var length = obj.length,
    type = jQuery.type( obj );

  if ( type === "function" || jQuery.isWindow( obj ) ) {
    return false;
  }

  if ( obj.nodeType === 1 && length ) {
    return true;
  }

  return type === "array" || length === 0 ||
    typeof length === "number" && length > 0 && ( length - 1 ) in obj;
}
var Sizzle =
/*!
 * Sizzle CSS Selector Engine v1.10.19
 * http://sizzlejs.com/
 *
 * Copyright 2013 jQuery Foundation, Inc. and other contributors
 * Released under the MIT license
 * http://jquery.org/license
 *
 * Date: 2014-04-18
 */
(function( window ) {

var i,
  support,
  Expr,
  getText,
  isXML,
  tokenize,
  compile,
  select,
  outermostContext,
  sortInput,
  hasDuplicate,

  // Local document vars
  setDocument,
  document,
  docElem,
  documentIsHTML,
  rbuggyQSA,
  rbuggyMatches,
  matches,
  contains,

  // Instance-specific data
  expando = "sizzle" + -(new Date()),
  preferredDoc = window.document,
  dirruns = 0,
  done = 0,
  classCache = createCache(),
  tokenCache = createCache(),
  compilerCache = createCache(),
  sortOrder = function( a, b ) {
    if ( a === b ) {
      hasDuplicate = true;
    }
    return 0;
  },

  // General-purpose constants
  strundefined = typeof undefined,
  MAX_NEGATIVE = 1 << 31,

  // Instance methods
  hasOwn = ({}).hasOwnProperty,
  arr = [],
  pop = arr.pop,
  push_native = arr.push,
  push = arr.push,
  slice = arr.slice,
  // Use a stripped-down indexOf if we can't use a native one
  indexOf = arr.indexOf || function( elem ) {
    var i = 0,
      len = this.length;
    for ( ; i < len; i++ ) {
      if ( this[i] === elem ) {
        return i;
      }
    }
    return -1;
  },

  booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",

  // Regular expressions

  // Whitespace characters http://www.w3.org/TR/css3-selectors/#whitespace
  whitespace = "[\\x20\\t\\r\\n\\f]",
  // http://www.w3.org/TR/css3-syntax/#characters
  characterEncoding = "(?:\\\\.|[\\w-]|[^\\x00-\\xa0])+",

  // Loosely modeled on CSS identifier characters
  // An unquoted value should be a CSS identifier http://www.w3.org/TR/css3-selectors/#attribute-selectors
  // Proper syntax: http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
  identifier = characterEncoding.replace( "w", "w#" ),

  // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
  attributes = "\\[" + whitespace + "*(" + characterEncoding + ")(?:" + whitespace +
    // Operator (capture 2)
    "*([*^$|!~]?=)" + whitespace +
    // "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
    "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
    "*\\]",

  pseudos = ":(" + characterEncoding + ")(?:\\((" +
    // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
    // 1. quoted (capture 3; capture 4 or capture 5)
    "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
    // 2. simple (capture 6)
    "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
    // 3. anything else (capture 2)
    ".*" +
    ")\\)|)",

  // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
  rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),

  rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
  rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),

  rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),

  rpseudo = new RegExp( pseudos ),
  ridentifier = new RegExp( "^" + identifier + "$" ),

  matchExpr = {
    "ID": new RegExp( "^#(" + characterEncoding + ")" ),
    "CLASS": new RegExp( "^\\.(" + characterEncoding + ")" ),
    "TAG": new RegExp( "^(" + characterEncoding.replace( "w", "w*" ) + ")" ),
    "ATTR": new RegExp( "^" + attributes ),
    "PSEUDO": new RegExp( "^" + pseudos ),
    "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
      "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
      "*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
    "bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
    // For use in libraries implementing .is()
    // We use this for POS matching in `select`
    "needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
      whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
  },

  rinputs = /^(?:input|select|textarea|button)$/i,
  rheader = /^h\d$/i,

  rnative = /^[^{]+\{\s*\[native \w/,

  // Easily-parseable/retrievable ID or TAG or CLASS selectors
  rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,

  rsibling = /[+~]/,
  rescape = /'|\\/g,

  // CSS escapes http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
  runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
  funescape = function( _, escaped, escapedWhitespace ) {
    var high = "0x" + escaped - 0x10000;
    // NaN means non-codepoint
    // Support: Firefox<24
    // Workaround erroneous numeric interpretation of +"0x"
    return high !== high || escapedWhitespace ?
      escaped :
      high < 0 ?
        // BMP codepoint
        String.fromCharCode( high + 0x10000 ) :
        // Supplemental Plane codepoint (surrogate pair)
        String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
  };

// Optimize for push.apply( _, NodeList )
try {
  push.apply(
    (arr = slice.call( preferredDoc.childNodes )),
    preferredDoc.childNodes
  );
  // Support: Android<4.0
  // Detect silently failing push.apply
  arr[ preferredDoc.childNodes.length ].nodeType;
} catch ( e ) {
  push = { apply: arr.length ?

    // Leverage slice if possible
    function( target, els ) {
      push_native.apply( target, slice.call(els) );
    } :

    // Support: IE<9
    // Otherwise append directly
    function( target, els ) {
      var j = target.length,
        i = 0;
      // Can't trust NodeList.length
      while ( (target[j++] = els[i++]) ) {}
      target.length = j - 1;
    }
  };
}

function Sizzle( selector, context, results, seed ) {
  var match, elem, m, nodeType,
    // QSA vars
    i, groups, old, nid, newContext, newSelector;

  if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
    setDocument( context );
  }

  context = context || document;
  results = results || [];

  if ( !selector || typeof selector !== "string" ) {
    return results;
  }

  if ( (nodeType = context.nodeType) !== 1 && nodeType !== 9 ) {
    return [];
  }

  if ( documentIsHTML && !seed ) {

    // Shortcuts
    if ( (match = rquickExpr.exec( selector )) ) {
      // Speed-up: Sizzle("#ID")
      if ( (m = match[1]) ) {
        if ( nodeType === 9 ) {
          elem = context.getElementById( m );
          // Check parentNode to catch when Blackberry 4.6 returns
          // nodes that are no longer in the document (jQuery #6963)
          if ( elem && elem.parentNode ) {
            // Handle the case where IE, Opera, and Webkit return items
            // by name instead of ID
            if ( elem.id === m ) {
              results.push( elem );
              return results;
            }
          } else {
            return results;
          }
        } else {
          // Context is not a document
          if ( context.ownerDocument && (elem = context.ownerDocument.getElementById( m )) &&
            contains( context, elem ) && elem.id === m ) {
            results.push( elem );
            return results;
          }
        }

      // Speed-up: Sizzle("TAG")
      } else if ( match[2] ) {
        push.apply( results, context.getElementsByTagName( selector ) );
        return results;

      // Speed-up: Sizzle(".CLASS")
      } else if ( (m = match[3]) && support.getElementsByClassName && context.getElementsByClassName ) {
        push.apply( results, context.getElementsByClassName( m ) );
        return results;
      }
    }

    // QSA path
    if ( support.qsa && (!rbuggyQSA || !rbuggyQSA.test( selector )) ) {
      nid = old = expando;
      newContext = context;
      newSelector = nodeType === 9 && selector;

      // qSA works strangely on Element-rooted queries
      // We can work around this by specifying an extra ID on the root
      // and working up from there (Thanks to Andrew Dupont for the technique)
      // IE 8 doesn't work on object elements
      if ( nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) {
        groups = tokenize( selector );

        if ( (old = context.getAttribute("id")) ) {
          nid = old.replace( rescape, "\\$&" );
        } else {
          context.setAttribute( "id", nid );
        }
        nid = "[id='" + nid + "'] ";

        i = groups.length;
        while ( i-- ) {
          groups[i] = nid + toSelector( groups[i] );
        }
        newContext = rsibling.test( selector ) && testContext( context.parentNode ) || context;
        newSelector = groups.join(",");
      }

      if ( newSelector ) {
        try {
          push.apply( results,
            newContext.querySelectorAll( newSelector )
          );
          return results;
        } catch(qsaError) {
        } finally {
          if ( !old ) {
            context.removeAttribute("id");
          }
        }
      }
    }
  }

  // All others
  return select( selector.replace( rtrim, "$1" ), context, results, seed );
}

/**
 * Create key-value caches of limited size
 * @returns {Function(string, Object)} Returns the Object data after storing it on itself with
 *  property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
 *  deleting the oldest entry
 */
function createCache() {
  var keys = [];

  function cache( key, value ) {
    // Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
    if ( keys.push( key + " " ) > Expr.cacheLength ) {
      // Only keep the most recent entries
      delete cache[ keys.shift() ];
    }
    return (cache[ key + " " ] = value);
  }
  return cache;
}

/**
 * Mark a function for special use by Sizzle
 * @param {Function} fn The function to mark
 */
function markFunction( fn ) {
  fn[ expando ] = true;
  return fn;
}

/**
 * Support testing using an element
 * @param {Function} fn Passed the created div and expects a boolean result
 */
function assert( fn ) {
  var div = document.createElement("div");

  try {
    return !!fn( div );
  } catch (e) {
    return false;
  } finally {
    // Remove from its parent by default
    if ( div.parentNode ) {
      div.parentNode.removeChild( div );
    }
    // release memory in IE
    div = null;
  }
}

/**
 * Adds the same handler for all of the specified attrs
 * @param {String} attrs Pipe-separated list of attributes
 * @param {Function} handler The method that will be applied
 */
function addHandle( attrs, handler ) {
  var arr = attrs.split("|"),
    i = attrs.length;

  while ( i-- ) {
    Expr.attrHandle[ arr[i] ] = handler;
  }
}

/**
 * Checks document order of two siblings
 * @param {Element} a
 * @param {Element} b
 * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
 */
function siblingCheck( a, b ) {
  var cur = b && a,
    diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
      ( ~b.sourceIndex || MAX_NEGATIVE ) -
      ( ~a.sourceIndex || MAX_NEGATIVE );

  // Use IE sourceIndex if available on both nodes
  if ( diff ) {
    return diff;
  }

  // Check if b follows a
  if ( cur ) {
    while ( (cur = cur.nextSibling) ) {
      if ( cur === b ) {
        return -1;
      }
    }
  }

  return a ? 1 : -1;
}

/**
 * Returns a function to use in pseudos for input types
 * @param {String} type
 */
function createInputPseudo( type ) {
  return function( elem ) {
    var name = elem.nodeName.toLowerCase();
    return name === "input" && elem.type === type;
  };
}

/**
 * Returns a function to use in pseudos for buttons
 * @param {String} type
 */
function createButtonPseudo( type ) {
  return function( elem ) {
    var name = elem.nodeName.toLowerCase();
    return (name === "input" || name === "button") && elem.type === type;
  };
}

/**
 * Returns a function to use in pseudos for positionals
 * @param {Function} fn
 */
function createPositionalPseudo( fn ) {
  return markFunction(function( argument ) {
    argument = +argument;
    return markFunction(function( seed, matches ) {
      var j,
        matchIndexes = fn( [], seed.length, argument ),
        i = matchIndexes.length;

      // Match elements found at the specified indexes
      while ( i-- ) {
        if ( seed[ (j = matchIndexes[i]) ] ) {
          seed[j] = !(matches[j] = seed[j]);
        }
      }
    });
  });
}

/**
 * Checks a node for validity as a Sizzle context
 * @param {Element|Object=} context
 * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
 */
function testContext( context ) {
  return context && typeof context.getElementsByTagName !== strundefined && context;
}

// Expose support vars for convenience
support = Sizzle.support = {};

/**
 * Detects XML nodes
 * @param {Element|Object} elem An element or a document
 * @returns {Boolean} True iff elem is a non-HTML XML node
 */
isXML = Sizzle.isXML = function( elem ) {
  // documentElement is verified for cases where it doesn't yet exist
  // (such as loading iframes in IE - #4833)
  var documentElement = elem && (elem.ownerDocument || elem).documentElement;
  return documentElement ? documentElement.nodeName !== "HTML" : false;
};

/**
 * Sets document-related variables once based on the current document
 * @param {Element|Object} [doc] An element or document object to use to set the document
 * @returns {Object} Returns the current document
 */
setDocument = Sizzle.setDocument = function( node ) {
  var hasCompare,
    doc = node ? node.ownerDocument || node : preferredDoc,
    parent = doc.defaultView;

  // If no document and documentElement is available, return
  if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
    return document;
  }

  // Set our document
  document = doc;
  docElem = doc.documentElement;

  // Support tests
  documentIsHTML = !isXML( doc );

  // Support: IE>8
  // If iframe document is assigned to "document" variable and if iframe has been reloaded,
  // IE will throw "permission denied" error when accessing "document" variable, see jQuery #13936
  // IE6-8 do not support the defaultView property so parent will be undefined
  if ( parent && parent !== parent.top ) {
    // IE11 does not have attachEvent, so all must suffer
    if ( parent.addEventListener ) {
      parent.addEventListener( "unload", function() {
        setDocument();
      }, false );
    } else if ( parent.attachEvent ) {
      parent.attachEvent( "onunload", function() {
        setDocument();
      });
    }
  }

  /* Attributes
  ---------------------------------------------------------------------- */

  // Support: IE<8
  // Verify that getAttribute really returns attributes and not properties (excepting IE8 booleans)
  support.attributes = assert(function( div ) {
    div.className = "i";
    return !div.getAttribute("className");
  });

  /* getElement(s)By*
  ---------------------------------------------------------------------- */

  // Check if getElementsByTagName("*") returns only elements
  support.getElementsByTagName = assert(function( div ) {
    div.appendChild( doc.createComment("") );
    return !div.getElementsByTagName("*").length;
  });

  // Check if getElementsByClassName can be trusted
  support.getElementsByClassName = rnative.test( doc.getElementsByClassName ) && assert(function( div ) {
    div.innerHTML = "<div class='a'></div><div class='a i'></div>";

    // Support: Safari<4
    // Catch class over-caching
    div.firstChild.className = "i";
    // Support: Opera<10
    // Catch gEBCN failure to find non-leading classes
    return div.getElementsByClassName("i").length === 2;
  });

  // Support: IE<10
  // Check if getElementById returns elements by name
  // The broken getElementById methods don't pick up programatically-set names,
  // so use a roundabout getElementsByName test
  support.getById = assert(function( div ) {
    docElem.appendChild( div ).id = expando;
    return !doc.getElementsByName || !doc.getElementsByName( expando ).length;
  });

  // ID find and filter
  if ( support.getById ) {
    Expr.find["ID"] = function( id, context ) {
      if ( typeof context.getElementById !== strundefined && documentIsHTML ) {
        var m = context.getElementById( id );
        // Check parentNode to catch when Blackberry 4.6 returns
        // nodes that are no longer in the document #6963
        return m && m.parentNode ? [ m ] : [];
      }
    };
    Expr.filter["ID"] = function( id ) {
      var attrId = id.replace( runescape, funescape );
      return function( elem ) {
        return elem.getAttribute("id") === attrId;
      };
    };
  } else {
    // Support: IE6/7
    // getElementById is not reliable as a find shortcut
    delete Expr.find["ID"];

    Expr.filter["ID"] =  function( id ) {
      var attrId = id.replace( runescape, funescape );
      return function( elem ) {
        var node = typeof elem.getAttributeNode !== strundefined && elem.getAttributeNode("id");
        return node && node.value === attrId;
      };
    };
  }

  // Tag
  Expr.find["TAG"] = support.getElementsByTagName ?
    function( tag, context ) {
      if ( typeof context.getElementsByTagName !== strundefined ) {
        return context.getElementsByTagName( tag );
      }
    } :
    function( tag, context ) {
      var elem,
        tmp = [],
        i = 0,
        results = context.getElementsByTagName( tag );

      // Filter out possible comments
      if ( tag === "*" ) {
        while ( (elem = results[i++]) ) {
          if ( elem.nodeType === 1 ) {
            tmp.push( elem );
          }
        }

        return tmp;
      }
      return results;
    };

  // Class
  Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
    if ( typeof context.getElementsByClassName !== strundefined && documentIsHTML ) {
      return context.getElementsByClassName( className );
    }
  };

  /* QSA/matchesSelector
  ---------------------------------------------------------------------- */

  // QSA and matchesSelector support

  // matchesSelector(:active) reports false when true (IE9/Opera 11.5)
  rbuggyMatches = [];

  // qSa(:focus) reports false when true (Chrome 21)
  // We allow this because of a bug in IE8/9 that throws an error
  // whenever `document.activeElement` is accessed on an iframe
  // So, we allow :focus to pass through QSA all the time to avoid the IE error
  // See http://bugs.jquery.com/ticket/13378
  rbuggyQSA = [];

  if ( (support.qsa = rnative.test( doc.querySelectorAll )) ) {
    // Build QSA regex
    // Regex strategy adopted from Diego Perini
    assert(function( div ) {
      // Select is set to empty string on purpose
      // This is to test IE's treatment of not explicitly
      // setting a boolean content attribute,
      // since its presence should be enough
      // http://bugs.jquery.com/ticket/12359
      div.innerHTML = "<select msallowclip=''><option selected=''></option></select>";

      // Support: IE8, Opera 11-12.16
      // Nothing should be selected when empty strings follow ^= or $= or *=
      // The test attribute must be unknown in Opera but "safe" for WinRT
      // http://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
      if ( div.querySelectorAll("[msallowclip^='']").length ) {
        rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
      }

      // Support: IE8
      // Boolean attributes and "value" are not treated correctly
      if ( !div.querySelectorAll("[selected]").length ) {
        rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
      }

      // Webkit/Opera - :checked should return selected option elements
      // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
      // IE8 throws error here and will not see later tests
      if ( !div.querySelectorAll(":checked").length ) {
        rbuggyQSA.push(":checked");
      }
    });

    assert(function( div ) {
      // Support: Windows 8 Native Apps
      // The type and name attributes are restricted during .innerHTML assignment
      var input = doc.createElement("input");
      input.setAttribute( "type", "hidden" );
      div.appendChild( input ).setAttribute( "name", "D" );

      // Support: IE8
      // Enforce case-sensitivity of name attribute
      if ( div.querySelectorAll("[name=d]").length ) {
        rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
      }

      // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
      // IE8 throws error here and will not see later tests
      if ( !div.querySelectorAll(":enabled").length ) {
        rbuggyQSA.push( ":enabled", ":disabled" );
      }

      // Opera 10-11 does not throw on post-comma invalid pseudos
      div.querySelectorAll("*,:x");
      rbuggyQSA.push(",.*:");
    });
  }

  if ( (support.matchesSelector = rnative.test( (matches = docElem.matches ||
    docElem.webkitMatchesSelector ||
    docElem.mozMatchesSelector ||
    docElem.oMatchesSelector ||
    docElem.msMatchesSelector) )) ) {

    assert(function( div ) {
      // Check to see if it's possible to do matchesSelector
      // on a disconnected node (IE 9)
      support.disconnectedMatch = matches.call( div, "div" );

      // This should fail with an exception
      // Gecko does not error, returns false instead
      matches.call( div, "[s!='']:x" );
      rbuggyMatches.push( "!=", pseudos );
    });
  }

  rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
  rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );

  /* Contains
  ---------------------------------------------------------------------- */
  hasCompare = rnative.test( docElem.compareDocumentPosition );

  // Element contains another
  // Purposefully does not implement inclusive descendent
  // As in, an element does not contain itself
  contains = hasCompare || rnative.test( docElem.contains ) ?
    function( a, b ) {
      var adown = a.nodeType === 9 ? a.documentElement : a,
        bup = b && b.parentNode;
      return a === bup || !!( bup && bup.nodeType === 1 && (
        adown.contains ?
          adown.contains( bup ) :
          a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
      ));
    } :
    function( a, b ) {
      if ( b ) {
        while ( (b = b.parentNode) ) {
          if ( b === a ) {
            return true;
          }
        }
      }
      return false;
    };

  /* Sorting
  ---------------------------------------------------------------------- */

  // Document order sorting
  sortOrder = hasCompare ?
  function( a, b ) {

    // Flag for duplicate removal
    if ( a === b ) {
      hasDuplicate = true;
      return 0;
    }

    // Sort on method existence if only one input has compareDocumentPosition
    var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
    if ( compare ) {
      return compare;
    }

    // Calculate position if both inputs belong to the same document
    compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ?
      a.compareDocumentPosition( b ) :

      // Otherwise we know they are disconnected
      1;

    // Disconnected nodes
    if ( compare & 1 ||
      (!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {

      // Choose the first element that is related to our preferred document
      if ( a === doc || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) {
        return -1;
      }
      if ( b === doc || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) {
        return 1;
      }

      // Maintain original order
      return sortInput ?
        ( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :
        0;
    }

    return compare & 4 ? -1 : 1;
  } :
  function( a, b ) {
    // Exit early if the nodes are identical
    if ( a === b ) {
      hasDuplicate = true;
      return 0;
    }

    var cur,
      i = 0,
      aup = a.parentNode,
      bup = b.parentNode,
      ap = [ a ],
      bp = [ b ];

    // Parentless nodes are either documents or disconnected
    if ( !aup || !bup ) {
      return a === doc ? -1 :
        b === doc ? 1 :
        aup ? -1 :
        bup ? 1 :
        sortInput ?
        ( indexOf.call( sortInput, a ) - indexOf.call( sortInput, b ) ) :
        0;

    // If the nodes are siblings, we can do a quick check
    } else if ( aup === bup ) {
      return siblingCheck( a, b );
    }

    // Otherwise we need full lists of their ancestors for comparison
    cur = a;
    while ( (cur = cur.parentNode) ) {
      ap.unshift( cur );
    }
    cur = b;
    while ( (cur = cur.parentNode) ) {
      bp.unshift( cur );
    }

    // Walk down the tree looking for a discrepancy
    while ( ap[i] === bp[i] ) {
      i++;
    }

    return i ?
      // Do a sibling check if the nodes have a common ancestor
      siblingCheck( ap[i], bp[i] ) :

      // Otherwise nodes in our document sort first
      ap[i] === preferredDoc ? -1 :
      bp[i] === preferredDoc ? 1 :
      0;
  };

  return doc;
};

Sizzle.matches = function( expr, elements ) {
  return Sizzle( expr, null, null, elements );
};

Sizzle.matchesSelector = function( elem, expr ) {
  // Set document vars if needed
  if ( ( elem.ownerDocument || elem ) !== document ) {
    setDocument( elem );
  }

  // Make sure that attribute selectors are quoted
  expr = expr.replace( rattributeQuotes, "='$1']" );

  if ( support.matchesSelector && documentIsHTML &&
    ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
    ( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {

    try {
      var ret = matches.call( elem, expr );

      // IE 9's matchesSelector returns false on disconnected nodes
      if ( ret || support.disconnectedMatch ||
          // As well, disconnected nodes are said to be in a document
          // fragment in IE 9
          elem.document && elem.document.nodeType !== 11 ) {
        return ret;
      }
    } catch(e) {}
  }

  return Sizzle( expr, document, null, [ elem ] ).length > 0;
};

Sizzle.contains = function( context, elem ) {
  // Set document vars if needed
  if ( ( context.ownerDocument || context ) !== document ) {
    setDocument( context );
  }
  return contains( context, elem );
};

Sizzle.attr = function( elem, name ) {
  // Set document vars if needed
  if ( ( elem.ownerDocument || elem ) !== document ) {
    setDocument( elem );
  }

  var fn = Expr.attrHandle[ name.toLowerCase() ],
    // Don't get fooled by Object.prototype properties (jQuery #13807)
    val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
      fn( elem, name, !documentIsHTML ) :
      undefined;

  return val !== undefined ?
    val :
    support.attributes || !documentIsHTML ?
      elem.getAttribute( name ) :
      (val = elem.getAttributeNode(name)) && val.specified ?
        val.value :
        null;
};

Sizzle.error = function( msg ) {
  throw new Error( "Syntax error, unrecognized expression: " + msg );
};

/**
 * Document sorting and removing duplicates
 * @param {ArrayLike} results
 */
Sizzle.uniqueSort = function( results ) {
  var elem,
    duplicates = [],
    j = 0,
    i = 0;

  // Unless we *know* we can detect duplicates, assume their presence
  hasDuplicate = !support.detectDuplicates;
  sortInput = !support.sortStable && results.slice( 0 );
  results.sort( sortOrder );

  if ( hasDuplicate ) {
    while ( (elem = results[i++]) ) {
      if ( elem === results[ i ] ) {
        j = duplicates.push( i );
      }
    }
    while ( j-- ) {
      results.splice( duplicates[ j ], 1 );
    }
  }

  // Clear input after sorting to release objects
  // See https://github.com/jquery/sizzle/pull/225
  sortInput = null;

  return results;
};

/**
 * Utility function for retrieving the text value of an array of DOM nodes
 * @param {Array|Element} elem
 */
getText = Sizzle.getText = function( elem ) {
  var node,
    ret = "",
    i = 0,
    nodeType = elem.nodeType;

  if ( !nodeType ) {
    // If no nodeType, this is expected to be an array
    while ( (node = elem[i++]) ) {
      // Do not traverse comment nodes
      ret += getText( node );
    }
  } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
    // Use textContent for elements
    // innerText usage removed for consistency of new lines (jQuery #11153)
    if ( typeof elem.textContent === "string" ) {
      return elem.textContent;
    } else {
      // Traverse its children
      for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
        ret += getText( elem );
      }
    }
  } else if ( nodeType === 3 || nodeType === 4 ) {
    return elem.nodeValue;
  }
  // Do not include comment or processing instruction nodes

  return ret;
};

Expr = Sizzle.selectors = {

  // Can be adjusted by the user
  cacheLength: 50,

  createPseudo: markFunction,

  match: matchExpr,

  attrHandle: {},

  find: {},

  relative: {
    ">": { dir: "parentNode", first: true },
    " ": { dir: "parentNode" },
    "+": { dir: "previousSibling", first: true },
    "~": { dir: "previousSibling" }
  },

  preFilter: {
    "ATTR": function( match ) {
      match[1] = match[1].replace( runescape, funescape );

      // Move the given value to match[3] whether quoted or unquoted
      match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape );

      if ( match[2] === "~=" ) {
        match[3] = " " + match[3] + " ";
      }

      return match.slice( 0, 4 );
    },

    "CHILD": function( match ) {
      /* matches from matchExpr["CHILD"]
        1 type (only|nth|...)
        2 what (child|of-type)
        3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
        4 xn-component of xn+y argument ([+-]?\d*n|)
        5 sign of xn-component
        6 x of xn-component
        7 sign of y-component
        8 y of y-component
      */
      match[1] = match[1].toLowerCase();

      if ( match[1].slice( 0, 3 ) === "nth" ) {
        // nth-* requires argument
        if ( !match[3] ) {
          Sizzle.error( match[0] );
        }

        // numeric x and y parameters for Expr.filter.CHILD
        // remember that false/true cast respectively to 0/1
        match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
        match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );

      // other types prohibit arguments
      } else if ( match[3] ) {
        Sizzle.error( match[0] );
      }

      return match;
    },

    "PSEUDO": function( match ) {
      var excess,
        unquoted = !match[6] && match[2];

      if ( matchExpr["CHILD"].test( match[0] ) ) {
        return null;
      }

      // Accept quoted arguments as-is
      if ( match[3] ) {
        match[2] = match[4] || match[5] || "";

      // Strip excess characters from unquoted arguments
      } else if ( unquoted && rpseudo.test( unquoted ) &&
        // Get excess from tokenize (recursively)
        (excess = tokenize( unquoted, true )) &&
        // advance to the next closing parenthesis
        (excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {

        // excess is a negative index
        match[0] = match[0].slice( 0, excess );
        match[2] = unquoted.slice( 0, excess );
      }

      // Return only captures needed by the pseudo filter method (type and argument)
      return match.slice( 0, 3 );
    }
  },

  filter: {

    "TAG": function( nodeNameSelector ) {
      var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
      return nodeNameSelector === "*" ?
        function() { return true; } :
        function( elem ) {
          return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
        };
    },

    "CLASS": function( className ) {
      var pattern = classCache[ className + " " ];

      return pattern ||
        (pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
        classCache( className, function( elem ) {
          return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== strundefined && elem.getAttribute("class") || "" );
        });
    },

    "ATTR": function( name, operator, check ) {
      return function( elem ) {
        var result = Sizzle.attr( elem, name );

        if ( result == null ) {
          return operator === "!=";
        }
        if ( !operator ) {
          return true;
        }

        result += "";

        return operator === "=" ? result === check :
          operator === "!=" ? result !== check :
          operator === "^=" ? check && result.indexOf( check ) === 0 :
          operator === "*=" ? check && result.indexOf( check ) > -1 :
          operator === "$=" ? check && result.slice( -check.length ) === check :
          operator === "~=" ? ( " " + result + " " ).indexOf( check ) > -1 :
          operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
          false;
      };
    },

    "CHILD": function( type, what, argument, first, last ) {
      var simple = type.slice( 0, 3 ) !== "nth",
        forward = type.slice( -4 ) !== "last",
        ofType = what === "of-type";

      return first === 1 && last === 0 ?

        // Shortcut for :nth-*(n)
        function( elem ) {
          return !!elem.parentNode;
        } :

        function( elem, context, xml ) {
          var cache, outerCache, node, diff, nodeIndex, start,
            dir = simple !== forward ? "nextSibling" : "previousSibling",
            parent = elem.parentNode,
            name = ofType && elem.nodeName.toLowerCase(),
            useCache = !xml && !ofType;

          if ( parent ) {

            // :(first|last|only)-(child|of-type)
            if ( simple ) {
              while ( dir ) {
                node = elem;
                while ( (node = node[ dir ]) ) {
                  if ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) {
                    return false;
                  }
                }
                // Reverse direction for :only-* (if we haven't yet done so)
                start = dir = type === "only" && !start && "nextSibling";
              }
              return true;
            }

            start = [ forward ? parent.firstChild : parent.lastChild ];

            // non-xml :nth-child(...) stores cache data on `parent`
            if ( forward && useCache ) {
              // Seek `elem` from a previously-cached index
              outerCache = parent[ expando ] || (parent[ expando ] = {});
              cache = outerCache[ type ] || [];
              nodeIndex = cache[0] === dirruns && cache[1];
              diff = cache[0] === dirruns && cache[2];
              node = nodeIndex && parent.childNodes[ nodeIndex ];

              while ( (node = ++nodeIndex && node && node[ dir ] ||

                // Fallback to seeking `elem` from the start
                (diff = nodeIndex = 0) || start.pop()) ) {

                // When found, cache indexes on `parent` and break
                if ( node.nodeType === 1 && ++diff && node === elem ) {
                  outerCache[ type ] = [ dirruns, nodeIndex, diff ];
                  break;
                }
              }

            // Use previously-cached element index if available
            } else if ( useCache && (cache = (elem[ expando ] || (elem[ expando ] = {}))[ type ]) && cache[0] === dirruns ) {
              diff = cache[1];

            // xml :nth-child(...) or :nth-last-child(...) or :nth(-last)?-of-type(...)
            } else {
              // Use the same loop as above to seek `elem` from the start
              while ( (node = ++nodeIndex && node && node[ dir ] ||
                (diff = nodeIndex = 0) || start.pop()) ) {

                if ( ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) && ++diff ) {
                  // Cache the index of each encountered element
                  if ( useCache ) {
                    (node[ expando ] || (node[ expando ] = {}))[ type ] = [ dirruns, diff ];
                  }

                  if ( node === elem ) {
                    break;
                  }
                }
              }
            }

            // Incorporate the offset, then check against cycle size
            diff -= last;
            return diff === first || ( diff % first === 0 && diff / first >= 0 );
          }
        };
    },

    "PSEUDO": function( pseudo, argument ) {
      // pseudo-class names are case-insensitive
      // http://www.w3.org/TR/selectors/#pseudo-classes
      // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
      // Remember that setFilters inherits from pseudos
      var args,
        fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
          Sizzle.error( "unsupported pseudo: " + pseudo );

      // The user may use createPseudo to indicate that
      // arguments are needed to create the filter function
      // just as Sizzle does
      if ( fn[ expando ] ) {
        return fn( argument );
      }

      // But maintain support for old signatures
      if ( fn.length > 1 ) {
        args = [ pseudo, pseudo, "", argument ];
        return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
          markFunction(function( seed, matches ) {
            var idx,
              matched = fn( seed, argument ),
              i = matched.length;
            while ( i-- ) {
              idx = indexOf.call( seed, matched[i] );
              seed[ idx ] = !( matches[ idx ] = matched[i] );
            }
          }) :
          function( elem ) {
            return fn( elem, 0, args );
          };
      }

      return fn;
    }
  },

  pseudos: {
    // Potentially complex pseudos
    "not": markFunction(function( selector ) {
      // Trim the selector passed to compile
      // to avoid treating leading and trailing
      // spaces as combinators
      var input = [],
        results = [],
        matcher = compile( selector.replace( rtrim, "$1" ) );

      return matcher[ expando ] ?
        markFunction(function( seed, matches, context, xml ) {
          var elem,
            unmatched = matcher( seed, null, xml, [] ),
            i = seed.length;

          // Match elements unmatched by `matcher`
          while ( i-- ) {
            if ( (elem = unmatched[i]) ) {
              seed[i] = !(matches[i] = elem);
            }
          }
        }) :
        function( elem, context, xml ) {
          input[0] = elem;
          matcher( input, null, xml, results );
          return !results.pop();
        };
    }),

    "has": markFunction(function( selector ) {
      return function( elem ) {
        return Sizzle( selector, elem ).length > 0;
      };
    }),

    "contains": markFunction(function( text ) {
      return function( elem ) {
        return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
      };
    }),

    // "Whether an element is represented by a :lang() selector
    // is based solely on the element's language value
    // being equal to the identifier C,
    // or beginning with the identifier C immediately followed by "-".
    // The matching of C against the element's language value is performed case-insensitively.
    // The identifier C does not have to be a valid language name."
    // http://www.w3.org/TR/selectors/#lang-pseudo
    "lang": markFunction( function( lang ) {
      // lang value must be a valid identifier
      if ( !ridentifier.test(lang || "") ) {
        Sizzle.error( "unsupported lang: " + lang );
      }
      lang = lang.replace( runescape, funescape ).toLowerCase();
      return function( elem ) {
        var elemLang;
        do {
          if ( (elemLang = documentIsHTML ?
            elem.lang :
            elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {

            elemLang = elemLang.toLowerCase();
            return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
          }
        } while ( (elem = elem.parentNode) && elem.nodeType === 1 );
        return false;
      };
    }),

    // Miscellaneous
    "target": function( elem ) {
      var hash = window.location && window.location.hash;
      return hash && hash.slice( 1 ) === elem.id;
    },

    "root": function( elem ) {
      return elem === docElem;
    },

    "focus": function( elem ) {
      return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
    },

    // Boolean properties
    "enabled": function( elem ) {
      return elem.disabled === false;
    },

    "disabled": function( elem ) {
      return elem.disabled === true;
    },

    "checked": function( elem ) {
      // In CSS3, :checked should return both checked and selected elements
      // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
      var nodeName = elem.nodeName.toLowerCase();
      return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
    },

    "selected": function( elem ) {
      // Accessing this property makes selected-by-default
      // options in Safari work properly
      if ( elem.parentNode ) {
        elem.parentNode.selectedIndex;
      }

      return elem.selected === true;
    },

    // Contents
    "empty": function( elem ) {
      // http://www.w3.org/TR/selectors/#empty-pseudo
      // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
      //   but not by others (comment: 8; processing instruction: 7; etc.)
      // nodeType < 6 works because attributes (2) do not appear as children
      for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
        if ( elem.nodeType < 6 ) {
          return false;
        }
      }
      return true;
    },

    "parent": function( elem ) {
      return !Expr.pseudos["empty"]( elem );
    },

    // Element/input types
    "header": function( elem ) {
      return rheader.test( elem.nodeName );
    },

    "input": function( elem ) {
      return rinputs.test( elem.nodeName );
    },

    "button": function( elem ) {
      var name = elem.nodeName.toLowerCase();
      return name === "input" && elem.type === "button" || name === "button";
    },

    "text": function( elem ) {
      var attr;
      return elem.nodeName.toLowerCase() === "input" &&
        elem.type === "text" &&

        // Support: IE<8
        // New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
        ( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" );
    },

    // Position-in-collection
    "first": createPositionalPseudo(function() {
      return [ 0 ];
    }),

    "last": createPositionalPseudo(function( matchIndexes, length ) {
      return [ length - 1 ];
    }),

    "eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
      return [ argument < 0 ? argument + length : argument ];
    }),

    "even": createPositionalPseudo(function( matchIndexes, length ) {
      var i = 0;
      for ( ; i < length; i += 2 ) {
        matchIndexes.push( i );
      }
      return matchIndexes;
    }),

    "odd": createPositionalPseudo(function( matchIndexes, length ) {
      var i = 1;
      for ( ; i < length; i += 2 ) {
        matchIndexes.push( i );
      }
      return matchIndexes;
    }),

    "lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
      var i = argument < 0 ? argument + length : argument;
      for ( ; --i >= 0; ) {
        matchIndexes.push( i );
      }
      return matchIndexes;
    }),

    "gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
      var i = argument < 0 ? argument + length : argument;
      for ( ; ++i < length; ) {
        matchIndexes.push( i );
      }
      return matchIndexes;
    })
  }
};

Expr.pseudos["nth"] = Expr.pseudos["eq"];

// Add button/input type pseudos
for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
  Expr.pseudos[ i ] = createInputPseudo( i );
}
for ( i in { submit: true, reset: true } ) {
  Expr.pseudos[ i ] = createButtonPseudo( i );
}

// Easy API for creating new setFilters
function setFilters() {}
setFilters.prototype = Expr.filters = Expr.pseudos;
Expr.setFilters = new setFilters();

tokenize = Sizzle.tokenize = function( selector, parseOnly ) {
  var matched, match, tokens, type,
    soFar, groups, preFilters,
    cached = tokenCache[ selector + " " ];

  if ( cached ) {
    return parseOnly ? 0 : cached.slice( 0 );
  }

  soFar = selector;
  groups = [];
  preFilters = Expr.preFilter;

  while ( soFar ) {

    // Comma and first run
    if ( !matched || (match = rcomma.exec( soFar )) ) {
      if ( match ) {
        // Don't consume trailing commas as valid
        soFar = soFar.slice( match[0].length ) || soFar;
      }
      groups.push( (tokens = []) );
    }

    matched = false;

    // Combinators
    if ( (match = rcombinators.exec( soFar )) ) {
      matched = match.shift();
      tokens.push({
        value: matched,
        // Cast descendant combinators to space
        type: match[0].replace( rtrim, " " )
      });
      soFar = soFar.slice( matched.length );
    }

    // Filters
    for ( type in Expr.filter ) {
      if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
        (match = preFilters[ type ]( match ))) ) {
        matched = match.shift();
        tokens.push({
          value: matched,
          type: type,
          matches: match
        });
        soFar = soFar.slice( matched.length );
      }
    }

    if ( !matched ) {
      break;
    }
  }

  // Return the length of the invalid excess
  // if we're just parsing
  // Otherwise, throw an error or return tokens
  return parseOnly ?
    soFar.length :
    soFar ?
      Sizzle.error( selector ) :
      // Cache the tokens
      tokenCache( selector, groups ).slice( 0 );
};

function toSelector( tokens ) {
  var i = 0,
    len = tokens.length,
    selector = "";
  for ( ; i < len; i++ ) {
    selector += tokens[i].value;
  }
  return selector;
}

function addCombinator( matcher, combinator, base ) {
  var dir = combinator.dir,
    checkNonElements = base && dir === "parentNode",
    doneName = done++;

  return combinator.first ?
    // Check against closest ancestor/preceding element
    function( elem, context, xml ) {
      while ( (elem = elem[ dir ]) ) {
        if ( elem.nodeType === 1 || checkNonElements ) {
          return matcher( elem, context, xml );
        }
      }
    } :

    // Check against all ancestor/preceding elements
    function( elem, context, xml ) {
      var oldCache, outerCache,
        newCache = [ dirruns, doneName ];

      // We can't set arbitrary data on XML nodes, so they don't benefit from dir caching
      if ( xml ) {
        while ( (elem = elem[ dir ]) ) {
          if ( elem.nodeType === 1 || checkNonElements ) {
            if ( matcher( elem, context, xml ) ) {
              return true;
            }
          }
        }
      } else {
        while ( (elem = elem[ dir ]) ) {
          if ( elem.nodeType === 1 || checkNonElements ) {
            outerCache = elem[ expando ] || (elem[ expando ] = {});
            if ( (oldCache = outerCache[ dir ]) &&
              oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {

              // Assign to newCache so results back-propagate to previous elements
              return (newCache[ 2 ] = oldCache[ 2 ]);
            } else {
              // Reuse newcache so results back-propagate to previous elements
              outerCache[ dir ] = newCache;

              // A match means we're done; a fail means we have to keep checking
              if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) {
                return true;
              }
            }
          }
        }
      }
    };
}

function elementMatcher( matchers ) {
  return matchers.length > 1 ?
    function( elem, context, xml ) {
      var i = matchers.length;
      while ( i-- ) {
        if ( !matchers[i]( elem, context, xml ) ) {
          return false;
        }
      }
      return true;
    } :
    matchers[0];
}

function multipleContexts( selector, contexts, results ) {
  var i = 0,
    len = contexts.length;
  for ( ; i < len; i++ ) {
    Sizzle( selector, contexts[i], results );
  }
  return results;
}

function condense( unmatched, map, filter, context, xml ) {
  var elem,
    newUnmatched = [],
    i = 0,
    len = unmatched.length,
    mapped = map != null;

  for ( ; i < len; i++ ) {
    if ( (elem = unmatched[i]) ) {
      if ( !filter || filter( elem, context, xml ) ) {
        newUnmatched.push( elem );
        if ( mapped ) {
          map.push( i );
        }
      }
    }
  }

  return newUnmatched;
}

function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
  if ( postFilter && !postFilter[ expando ] ) {
    postFilter = setMatcher( postFilter );
  }
  if ( postFinder && !postFinder[ expando ] ) {
    postFinder = setMatcher( postFinder, postSelector );
  }
  return markFunction(function( seed, results, context, xml ) {
    var temp, i, elem,
      preMap = [],
      postMap = [],
      preexisting = results.length,

      // Get initial elements from seed or context
      elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),

      // Prefilter to get matcher input, preserving a map for seed-results synchronization
      matcherIn = preFilter && ( seed || !selector ) ?
        condense( elems, preMap, preFilter, context, xml ) :
        elems,

      matcherOut = matcher ?
        // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
        postFinder || ( seed ? preFilter : preexisting || postFilter ) ?

          // ...intermediate processing is necessary
          [] :

          // ...otherwise use results directly
          results :
        matcherIn;

    // Find primary matches
    if ( matcher ) {
      matcher( matcherIn, matcherOut, context, xml );
    }

    // Apply postFilter
    if ( postFilter ) {
      temp = condense( matcherOut, postMap );
      postFilter( temp, [], context, xml );

      // Un-match failing elements by moving them back to matcherIn
      i = temp.length;
      while ( i-- ) {
        if ( (elem = temp[i]) ) {
          matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
        }
      }
    }

    if ( seed ) {
      if ( postFinder || preFilter ) {
        if ( postFinder ) {
          // Get the final matcherOut by condensing this intermediate into postFinder contexts
          temp = [];
          i = matcherOut.length;
          while ( i-- ) {
            if ( (elem = matcherOut[i]) ) {
              // Restore matcherIn since elem is not yet a final match
              temp.push( (matcherIn[i] = elem) );
            }
          }
          postFinder( null, (matcherOut = []), temp, xml );
        }

        // Move matched elements from seed to results to keep them synchronized
        i = matcherOut.length;
        while ( i-- ) {
          if ( (elem = matcherOut[i]) &&
            (temp = postFinder ? indexOf.call( seed, elem ) : preMap[i]) > -1 ) {

            seed[temp] = !(results[temp] = elem);
          }
        }
      }

    // Add elements to results, through postFinder if defined
    } else {
      matcherOut = condense(
        matcherOut === results ?
          matcherOut.splice( preexisting, matcherOut.length ) :
          matcherOut
      );
      if ( postFinder ) {
        postFinder( null, results, matcherOut, xml );
      } else {
        push.apply( results, matcherOut );
      }
    }
  });
}

function matcherFromTokens( tokens ) {
  var checkContext, matcher, j,
    len = tokens.length,
    leadingRelative = Expr.relative[ tokens[0].type ],
    implicitRelative = leadingRelative || Expr.relative[" "],
    i = leadingRelative ? 1 : 0,

    // The foundational matcher ensures that elements are reachable from top-level context(s)
    matchContext = addCombinator( function( elem ) {
      return elem === checkContext;
    }, implicitRelative, true ),
    matchAnyContext = addCombinator( function( elem ) {
      return indexOf.call( checkContext, elem ) > -1;
    }, implicitRelative, true ),
    matchers = [ function( elem, context, xml ) {
      return ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
        (checkContext = context).nodeType ?
          matchContext( elem, context, xml ) :
          matchAnyContext( elem, context, xml ) );
    } ];

  for ( ; i < len; i++ ) {
    if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
      matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
    } else {
      matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );

      // Return special upon seeing a positional matcher
      if ( matcher[ expando ] ) {
        // Find the next relative operator (if any) for proper handling
        j = ++i;
        for ( ; j < len; j++ ) {
          if ( Expr.relative[ tokens[j].type ] ) {
            break;
          }
        }
        return setMatcher(
          i > 1 && elementMatcher( matchers ),
          i > 1 && toSelector(
            // If the preceding token was a descendant combinator, insert an implicit any-element `*`
            tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
          ).replace( rtrim, "$1" ),
          matcher,
          i < j && matcherFromTokens( tokens.slice( i, j ) ),
          j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
          j < len && toSelector( tokens )
        );
      }
      matchers.push( matcher );
    }
  }

  return elementMatcher( matchers );
}

function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
  var bySet = setMatchers.length > 0,
    byElement = elementMatchers.length > 0,
    superMatcher = function( seed, context, xml, results, outermost ) {
      var elem, j, matcher,
        matchedCount = 0,
        i = "0",
        unmatched = seed && [],
        setMatched = [],
        contextBackup = outermostContext,
        // We must always have either seed elements or outermost context
        elems = seed || byElement && Expr.find["TAG"]( "*", outermost ),
        // Use integer dirruns iff this is the outermost matcher
        dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
        len = elems.length;

      if ( outermost ) {
        outermostContext = context !== document && context;
      }

      // Add elements passing elementMatchers directly to results
      // Keep `i` a string if there are no elements so `matchedCount` will be "00" below
      // Support: IE<9, Safari
      // Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
      for ( ; i !== len && (elem = elems[i]) != null; i++ ) {
        if ( byElement && elem ) {
          j = 0;
          while ( (matcher = elementMatchers[j++]) ) {
            if ( matcher( elem, context, xml ) ) {
              results.push( elem );
              break;
            }
          }
          if ( outermost ) {
            dirruns = dirrunsUnique;
          }
        }

        // Track unmatched elements for set filters
        if ( bySet ) {
          // They will have gone through all possible matchers
          if ( (elem = !matcher && elem) ) {
            matchedCount--;
          }

          // Lengthen the array for every element, matched or not
          if ( seed ) {
            unmatched.push( elem );
          }
        }
      }

      // Apply set filters to unmatched elements
      matchedCount += i;
      if ( bySet && i !== matchedCount ) {
        j = 0;
        while ( (matcher = setMatchers[j++]) ) {
          matcher( unmatched, setMatched, context, xml );
        }

        if ( seed ) {
          // Reintegrate element matches to eliminate the need for sorting
          if ( matchedCount > 0 ) {
            while ( i-- ) {
              if ( !(unmatched[i] || setMatched[i]) ) {
                setMatched[i] = pop.call( results );
              }
            }
          }

          // Discard index placeholder values to get only actual matches
          setMatched = condense( setMatched );
        }

        // Add matches to results
        push.apply( results, setMatched );

        // Seedless set matches succeeding multiple successful matchers stipulate sorting
        if ( outermost && !seed && setMatched.length > 0 &&
          ( matchedCount + setMatchers.length ) > 1 ) {

          Sizzle.uniqueSort( results );
        }
      }

      // Override manipulation of globals by nested matchers
      if ( outermost ) {
        dirruns = dirrunsUnique;
        outermostContext = contextBackup;
      }

      return unmatched;
    };

  return bySet ?
    markFunction( superMatcher ) :
    superMatcher;
}

compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) {
  var i,
    setMatchers = [],
    elementMatchers = [],
    cached = compilerCache[ selector + " " ];

  if ( !cached ) {
    // Generate a function of recursive functions that can be used to check each element
    if ( !match ) {
      match = tokenize( selector );
    }
    i = match.length;
    while ( i-- ) {
      cached = matcherFromTokens( match[i] );
      if ( cached[ expando ] ) {
        setMatchers.push( cached );
      } else {
        elementMatchers.push( cached );
      }
    }

    // Cache the compiled function
    cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );

    // Save selector and tokenization
    cached.selector = selector;
  }
  return cached;
};

/**
 * A low-level selection function that works with Sizzle's compiled
 *  selector functions
 * @param {String|Function} selector A selector or a pre-compiled
 *  selector function built with Sizzle.compile
 * @param {Element} context
 * @param {Array} [results]
 * @param {Array} [seed] A set of elements to match against
 */
select = Sizzle.select = function( selector, context, results, seed ) {
  var i, tokens, token, type, find,
    compiled = typeof selector === "function" && selector,
    match = !seed && tokenize( (selector = compiled.selector || selector) );

  results = results || [];

  // Try to minimize operations if there is no seed and only one group
  if ( match.length === 1 ) {

    // Take a shortcut and set the context if the root selector is an ID
    tokens = match[0] = match[0].slice( 0 );
    if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
        support.getById && context.nodeType === 9 && documentIsHTML &&
        Expr.relative[ tokens[1].type ] ) {

      context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
      if ( !context ) {
        return results;

      // Precompiled matchers will still verify ancestry, so step up a level
      } else if ( compiled ) {
        context = context.parentNode;
      }

      selector = selector.slice( tokens.shift().value.length );
    }

    // Fetch a seed set for right-to-left matching
    i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
    while ( i-- ) {
      token = tokens[i];

      // Abort if we hit a combinator
      if ( Expr.relative[ (type = token.type) ] ) {
        break;
      }
      if ( (find = Expr.find[ type ]) ) {
        // Search, expanding context for leading sibling combinators
        if ( (seed = find(
          token.matches[0].replace( runescape, funescape ),
          rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context
        )) ) {

          // If seed is empty or no tokens remain, we can return early
          tokens.splice( i, 1 );
          selector = seed.length && toSelector( tokens );
          if ( !selector ) {
            push.apply( results, seed );
            return results;
          }

          break;
        }
      }
    }
  }

  // Compile and execute a filtering function if one is not provided
  // Provide `match` to avoid retokenization if we modified the selector above
  ( compiled || compile( selector, match ) )(
    seed,
    context,
    !documentIsHTML,
    results,
    rsibling.test( selector ) && testContext( context.parentNode ) || context
  );
  return results;
};

// One-time assignments

// Sort stability
support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;

// Support: Chrome<14
// Always assume duplicates if they aren't passed to the comparison function
support.detectDuplicates = !!hasDuplicate;

// Initialize against the default document
setDocument();

// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
// Detached nodes confoundingly follow *each other*
support.sortDetached = assert(function( div1 ) {
  // Should return 1, but returns 4 (following)
  return div1.compareDocumentPosition( document.createElement("div") ) & 1;
});

// Support: IE<8
// Prevent attribute/property "interpolation"
// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !assert(function( div ) {
  div.innerHTML = "<a href='#'></a>";
  return div.firstChild.getAttribute("href") === "#" ;
}) ) {
  addHandle( "type|href|height|width", function( elem, name, isXML ) {
    if ( !isXML ) {
      return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
    }
  });
}

// Support: IE<9
// Use defaultValue in place of getAttribute("value")
if ( !support.attributes || !assert(function( div ) {
  div.innerHTML = "<input/>";
  div.firstChild.setAttribute( "value", "" );
  return div.firstChild.getAttribute( "value" ) === "";
}) ) {
  addHandle( "value", function( elem, name, isXML ) {
    if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
      return elem.defaultValue;
    }
  });
}

// Support: IE<9
// Use getAttributeNode to fetch booleans when getAttribute lies
if ( !assert(function( div ) {
  return div.getAttribute("disabled") == null;
}) ) {
  addHandle( booleans, function( elem, name, isXML ) {
    var val;
    if ( !isXML ) {
      return elem[ name ] === true ? name.toLowerCase() :
          (val = elem.getAttributeNode( name )) && val.specified ?
          val.value :
        null;
    }
  });
}

return Sizzle;

})( window );



jQuery.find = Sizzle;
jQuery.expr = Sizzle.selectors;
jQuery.expr[":"] = jQuery.expr.pseudos;
jQuery.unique = Sizzle.uniqueSort;
jQuery.text = Sizzle.getText;
jQuery.isXMLDoc = Sizzle.isXML;
jQuery.contains = Sizzle.contains;



var rneedsContext = jQuery.expr.match.needsContext;

var rsingleTag = (/^<(\w+)\s*\/?>(?:<\/\1>|)$/);



var risSimple = /^.[^:#\[\.,]*$/;

// Implement the identical functionality for filter and not
function winnow( elements, qualifier, not ) {
  if ( jQuery.isFunction( qualifier ) ) {
    return jQuery.grep( elements, function( elem, i ) {
      /* jshint -W018 */
      return !!qualifier.call( elem, i, elem ) !== not;
    });

  }

  if ( qualifier.nodeType ) {
    return jQuery.grep( elements, function( elem ) {
      return ( elem === qualifier ) !== not;
    });

  }

  if ( typeof qualifier === "string" ) {
    if ( risSimple.test( qualifier ) ) {
      return jQuery.filter( qualifier, elements, not );
    }

    qualifier = jQuery.filter( qualifier, elements );
  }

  return jQuery.grep( elements, function( elem ) {
    return ( jQuery.inArray( elem, qualifier ) >= 0 ) !== not;
  });
}

jQuery.filter = function( expr, elems, not ) {
  var elem = elems[ 0 ];

  if ( not ) {
    expr = ":not(" + expr + ")";
  }

  return elems.length === 1 && elem.nodeType === 1 ?
    jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] :
    jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
      return elem.nodeType === 1;
    }));
};

jQuery.fn.extend({
  find: function( selector ) {
    var i,
      ret = [],
      self = this,
      len = self.length;

    if ( typeof selector !== "string" ) {
      return this.pushStack( jQuery( selector ).filter(function() {
        for ( i = 0; i < len; i++ ) {
          if ( jQuery.contains( self[ i ], this ) ) {
            return true;
          }
        }
      }) );
    }

    for ( i = 0; i < len; i++ ) {
      jQuery.find( selector, self[ i ], ret );
    }

    // Needed because $( selector, context ) becomes $( context ).find( selector )
    ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret );
    ret.selector = this.selector ? this.selector + " " + selector : selector;
    return ret;
  },
  filter: function( selector ) {
    return this.pushStack( winnow(this, selector || [], false) );
  },
  not: function( selector ) {
    return this.pushStack( winnow(this, selector || [], true) );
  },
  is: function( selector ) {
    return !!winnow(
      this,

      // If this is a positional/relative selector, check membership in the returned set
      // so $("p:first").is("p:last") won't return true for a doc with two "p".
      typeof selector === "string" && rneedsContext.test( selector ) ?
        jQuery( selector ) :
        selector || [],
      false
    ).length;
  }
});


// Initialize a jQuery object


// A central reference to the root jQuery(document)
var rootjQuery,

  // Use the correct document accordingly with window argument (sandbox)
  document = window.document,

  // A simple way to check for HTML strings
  // Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
  // Strict HTML recognition (#11290: must start with <)
  rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/,

  init = jQuery.fn.init = function( selector, context ) {
    var match, elem;

    // HANDLE: $(""), $(null), $(undefined), $(false)
    if ( !selector ) {
      return this;
    }

    // Handle HTML strings
    if ( typeof selector === "string" ) {
      if ( selector.charAt(0) === "<" && selector.charAt( selector.length - 1 ) === ">" && selector.length >= 3 ) {
        // Assume that strings that start and end with <> are HTML and skip the regex check
        match = [ null, selector, null ];

      } else {
        match = rquickExpr.exec( selector );
      }

      // Match html or make sure no context is specified for #id
      if ( match && (match[1] || !context) ) {

        // HANDLE: $(html) -> $(array)
        if ( match[1] ) {
          context = context instanceof jQuery ? context[0] : context;

          // scripts is true for back-compat
          // Intentionally let the error be thrown if parseHTML is not present
          jQuery.merge( this, jQuery.parseHTML(
            match[1],
            context && context.nodeType ? context.ownerDocument || context : document,
            true
          ) );

          // HANDLE: $(html, props)
          if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) {
            for ( match in context ) {
              // Properties of context are called as methods if possible
              if ( jQuery.isFunction( this[ match ] ) ) {
                this[ match ]( context[ match ] );

              // ...and otherwise set as attributes
              } else {
                this.attr( match, context[ match ] );
              }
            }
          }

          return this;

        // HANDLE: $(#id)
        } else {
          elem = document.getElementById( match[2] );

          // Check parentNode to catch when Blackberry 4.6 returns
          // nodes that are no longer in the document #6963
          if ( elem && elem.parentNode ) {
            // Handle the case where IE and Opera return items
            // by name instead of ID
            if ( elem.id !== match[2] ) {
              return rootjQuery.find( selector );
            }

            // Otherwise, we inject the element directly into the jQuery object
            this.length = 1;
            this[0] = elem;
          }

          this.context = document;
          this.selector = selector;
          return this;
        }

      // HANDLE: $(expr, $(...))
      } else if ( !context || context.jquery ) {
        return ( context || rootjQuery ).find( selector );

      // HANDLE: $(expr, context)
      // (which is just equivalent to: $(context).find(expr)
      } else {
        return this.constructor( context ).find( selector );
      }

    // HANDLE: $(DOMElement)
    } else if ( selector.nodeType ) {
      this.context = this[0] = selector;
      this.length = 1;
      return this;

    // HANDLE: $(function)
    // Shortcut for document ready
    } else if ( jQuery.isFunction( selector ) ) {
      return typeof rootjQuery.ready !== "undefined" ?
        rootjQuery.ready( selector ) :
        // Execute immediately if ready is not present
        selector( jQuery );
    }

    if ( selector.selector !== undefined ) {
      this.selector = selector.selector;
      this.context = selector.context;
    }

    return jQuery.makeArray( selector, this );
  };

// Give the init function the jQuery prototype for later instantiation
init.prototype = jQuery.fn;

// Initialize central reference
rootjQuery = jQuery( document );


var rparentsprev = /^(?:parents|prev(?:Until|All))/,
  // methods guaranteed to produce a unique set when starting from a unique set
  guaranteedUnique = {
    children: true,
    contents: true,
    next: true,
    prev: true
  };

jQuery.extend({
  dir: function( elem, dir, until ) {
    var matched = [],
      cur = elem[ dir ];

    while ( cur && cur.nodeType !== 9 && (until === undefined || cur.nodeType !== 1 || !jQuery( cur ).is( until )) ) {
      if ( cur.nodeType === 1 ) {
        matched.push( cur );
      }
      cur = cur[dir];
    }
    return matched;
  },

  sibling: function( n, elem ) {
    var r = [];

    for ( ; n; n = n.nextSibling ) {
      if ( n.nodeType === 1 && n !== elem ) {
        r.push( n );
      }
    }

    return r;
  }
});

jQuery.fn.extend({
  has: function( target ) {
    var i,
      targets = jQuery( target, this ),
      len = targets.length;

    return this.filter(function() {
      for ( i = 0; i < len; i++ ) {
        if ( jQuery.contains( this, targets[i] ) ) {
          return true;
        }
      }
    });
  },

  closest: function( selectors, context ) {
    var cur,
      i = 0,
      l = this.length,
      matched = [],
      pos = rneedsContext.test( selectors ) || typeof selectors !== "string" ?
        jQuery( selectors, context || this.context ) :
        0;

    for ( ; i < l; i++ ) {
      for ( cur = this[i]; cur && cur !== context; cur = cur.parentNode ) {
        // Always skip document fragments
        if ( cur.nodeType < 11 && (pos ?
          pos.index(cur) > -1 :

          // Don't pass non-elements to Sizzle
          cur.nodeType === 1 &&
            jQuery.find.matchesSelector(cur, selectors)) ) {

          matched.push( cur );
          break;
        }
      }
    }

    return this.pushStack( matched.length > 1 ? jQuery.unique( matched ) : matched );
  },

  // Determine the position of an element within
  // the matched set of elements
  index: function( elem ) {

    // No argument, return index in parent
    if ( !elem ) {
      return ( this[0] && this[0].parentNode ) ? this.first().prevAll().length : -1;
    }

    // index in selector
    if ( typeof elem === "string" ) {
      return jQuery.inArray( this[0], jQuery( elem ) );
    }

    // Locate the position of the desired element
    return jQuery.inArray(
      // If it receives a jQuery object, the first element is used
      elem.jquery ? elem[0] : elem, this );
  },

  add: function( selector, context ) {
    return this.pushStack(
      jQuery.unique(
        jQuery.merge( this.get(), jQuery( selector, context ) )
      )
    );
  },

  addBack: function( selector ) {
    return this.add( selector == null ?
      this.prevObject : this.prevObject.filter(selector)
    );
  }
});

function sibling( cur, dir ) {
  do {
    cur = cur[ dir ];
  } while ( cur && cur.nodeType !== 1 );

  return cur;
}

jQuery.each({
  parent: function( elem ) {
    var parent = elem.parentNode;
    return parent && parent.nodeType !== 11 ? parent : null;
  },
  parents: function( elem ) {
    return jQuery.dir( elem, "parentNode" );
  },
  parentsUntil: function( elem, i, until ) {
    return jQuery.dir( elem, "parentNode", until );
  },
  next: function( elem ) {
    return sibling( elem, "nextSibling" );
  },
  prev: function( elem ) {
    return sibling( elem, "previousSibling" );
  },
  nextAll: function( elem ) {
    return jQuery.dir( elem, "nextSibling" );
  },
  prevAll: function( elem ) {
    return jQuery.dir( elem, "previousSibling" );
  },
  nextUntil: function( elem, i, until ) {
    return jQuery.dir( elem, "nextSibling", until );
  },
  prevUntil: function( elem, i, until ) {
    return jQuery.dir( elem, "previousSibling", until );
  },
  siblings: function( elem ) {
    return jQuery.sibling( ( elem.parentNode || {} ).firstChild, elem );
  },
  children: function( elem ) {
    return jQuery.sibling( elem.firstChild );
  },
  contents: function( elem ) {
    return jQuery.nodeName( elem, "iframe" ) ?
      elem.contentDocument || elem.contentWindow.document :
      jQuery.merge( [], elem.childNodes );
  }
}, function( name, fn ) {
  jQuery.fn[ name ] = function( until, selector ) {
    var ret = jQuery.map( this, fn, until );

    if ( name.slice( -5 ) !== "Until" ) {
      selector = until;
    }

    if ( selector && typeof selector === "string" ) {
      ret = jQuery.filter( selector, ret );
    }

    if ( this.length > 1 ) {
      // Remove duplicates
      if ( !guaranteedUnique[ name ] ) {
        ret = jQuery.unique( ret );
      }

      // Reverse order for parents* and prev-derivatives
      if ( rparentsprev.test( name ) ) {
        ret = ret.reverse();
      }
    }

    return this.pushStack( ret );
  };
});
var rnotwhite = (/\S+/g);



// String to Object options format cache
var optionsCache = {};

// Convert String-formatted options into Object-formatted ones and store in cache
function createOptions( options ) {
  var object = optionsCache[ options ] = {};
  jQuery.each( options.match( rnotwhite ) || [], function( _, flag ) {
    object[ flag ] = true;
  });
  return object;
}

/*
 * Create a callback list using the following parameters:
 *
 *  options: an optional list of space-separated options that will change how
 *      the callback list behaves or a more traditional option object
 *
 * By default a callback list will act like an event callback list and can be
 * "fired" multiple times.
 *
 * Possible options:
 *
 *  once:     will ensure the callback list can only be fired once (like a Deferred)
 *
 *  memory:     will keep track of previous values and will call any callback added
 *          after the list has been fired right away with the latest "memorized"
 *          values (like a Deferred)
 *
 *  unique:     will ensure a callback can only be added once (no duplicate in the list)
 *
 *  stopOnFalse:  interrupt callings when a callback returns false
 *
 */
jQuery.Callbacks = function( options ) {

  // Convert options from String-formatted to Object-formatted if needed
  // (we check in cache first)
  options = typeof options === "string" ?
    ( optionsCache[ options ] || createOptions( options ) ) :
    jQuery.extend( {}, options );

  var // Flag to know if list is currently firing
    firing,
    // Last fire value (for non-forgettable lists)
    memory,
    // Flag to know if list was already fired
    fired,
    // End of the loop when firing
    firingLength,
    // Index of currently firing callback (modified by remove if needed)
    firingIndex,
    // First callback to fire (used internally by add and fireWith)
    firingStart,
    // Actual callback list
    list = [],
    // Stack of fire calls for repeatable lists
    stack = !options.once && [],
    // Fire callbacks
    fire = function( data ) {
      memory = options.memory && data;
      fired = true;
      firingIndex = firingStart || 0;
      firingStart = 0;
      firingLength = list.length;
      firing = true;
      for ( ; list && firingIndex < firingLength; firingIndex++ ) {
        if ( list[ firingIndex ].apply( data[ 0 ], data[ 1 ] ) === false && options.stopOnFalse ) {
          memory = false; // To prevent further calls using add
          break;
        }
      }
      firing = false;
      if ( list ) {
        if ( stack ) {
          if ( stack.length ) {
            fire( stack.shift() );
          }
        } else if ( memory ) {
          list = [];
        } else {
          self.disable();
        }
      }
    },
    // Actual Callbacks object
    self = {
      // Add a callback or a collection of callbacks to the list
      add: function() {
        if ( list ) {
          // First, we save the current length
          var start = list.length;
          (function add( args ) {
            jQuery.each( args, function( _, arg ) {
              var type = jQuery.type( arg );
              if ( type === "function" ) {
                if ( !options.unique || !self.has( arg ) ) {
                  list.push( arg );
                }
              } else if ( arg && arg.length && type !== "string" ) {
                // Inspect recursively
                add( arg );
              }
            });
          })( arguments );
          // Do we need to add the callbacks to the
          // current firing batch?
          if ( firing ) {
            firingLength = list.length;
          // With memory, if we're not firing then
          // we should call right away
          } else if ( memory ) {
            firingStart = start;
            fire( memory );
          }
        }
        return this;
      },
      // Remove a callback from the list
      remove: function() {
        if ( list ) {
          jQuery.each( arguments, function( _, arg ) {
            var index;
            while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
              list.splice( index, 1 );
              // Handle firing indexes
              if ( firing ) {
                if ( index <= firingLength ) {
                  firingLength--;
                }
                if ( index <= firingIndex ) {
                  firingIndex--;
                }
              }
            }
          });
        }
        return this;
      },
      // Check if a given callback is in the list.
      // If no argument is given, return whether or not list has callbacks attached.
      has: function( fn ) {
        return fn ? jQuery.inArray( fn, list ) > -1 : !!( list && list.length );
      },
      // Remove all callbacks from the list
      empty: function() {
        list = [];
        firingLength = 0;
        return this;
      },
      // Have the list do nothing anymore
      disable: function() {
        list = stack = memory = undefined;
        return this;
      },
      // Is it disabled?
      disabled: function() {
        return !list;
      },
      // Lock the list in its current state
      lock: function() {
        stack = undefined;
        if ( !memory ) {
          self.disable();
        }
        return this;
      },
      // Is it locked?
      locked: function() {
        return !stack;
      },
      // Call all callbacks with the given context and arguments
      fireWith: function( context, args ) {
        if ( list && ( !fired || stack ) ) {
          args = args || [];
          args = [ context, args.slice ? args.slice() : args ];
          if ( firing ) {
            stack.push( args );
          } else {
            fire( args );
          }
        }
        return this;
      },
      // Call all the callbacks with the given arguments
      fire: function() {
        self.fireWith( this, arguments );
        return this;
      },
      // To know if the callbacks have already been called at least once
      fired: function() {
        return !!fired;
      }
    };

  return self;
};


jQuery.extend({

  Deferred: function( func ) {
    var tuples = [
        // action, add listener, listener list, final state
        [ "resolve", "done", jQuery.Callbacks("once memory"), "resolved" ],
        [ "reject", "fail", jQuery.Callbacks("once memory"), "rejected" ],
        [ "notify", "progress", jQuery.Callbacks("memory") ]
      ],
      state = "pending",
      promise = {
        state: function() {
          return state;
        },
        always: function() {
          deferred.done( arguments ).fail( arguments );
          return this;
        },
        then: function( /* fnDone, fnFail, fnProgress */ ) {
          var fns = arguments;
          return jQuery.Deferred(function( newDefer ) {
            jQuery.each( tuples, function( i, tuple ) {
              var fn = jQuery.isFunction( fns[ i ] ) && fns[ i ];
              // deferred[ done | fail | progress ] for forwarding actions to newDefer
              deferred[ tuple[1] ](function() {
                var returned = fn && fn.apply( this, arguments );
                if ( returned && jQuery.isFunction( returned.promise ) ) {
                  returned.promise()
                    .done( newDefer.resolve )
                    .fail( newDefer.reject )
                    .progress( newDefer.notify );
                } else {
                  newDefer[ tuple[ 0 ] + "With" ]( this === promise ? newDefer.promise() : this, fn ? [ returned ] : arguments );
                }
              });
            });
            fns = null;
          }).promise();
        },
        // Get a promise for this deferred
        // If obj is provided, the promise aspect is added to the object
        promise: function( obj ) {
          return obj != null ? jQuery.extend( obj, promise ) : promise;
        }
      },
      deferred = {};

    // Keep pipe for back-compat
    promise.pipe = promise.then;

    // Add list-specific methods
    jQuery.each( tuples, function( i, tuple ) {
      var list = tuple[ 2 ],
        stateString = tuple[ 3 ];

      // promise[ done | fail | progress ] = list.add
      promise[ tuple[1] ] = list.add;

      // Handle state
      if ( stateString ) {
        list.add(function() {
          // state = [ resolved | rejected ]
          state = stateString;

        // [ reject_list | resolve_list ].disable; progress_list.lock
        }, tuples[ i ^ 1 ][ 2 ].disable, tuples[ 2 ][ 2 ].lock );
      }

      // deferred[ resolve | reject | notify ]
      deferred[ tuple[0] ] = function() {
        deferred[ tuple[0] + "With" ]( this === deferred ? promise : this, arguments );
        return this;
      };
      deferred[ tuple[0] + "With" ] = list.fireWith;
    });

    // Make the deferred a promise
    promise.promise( deferred );

    // Call given func if any
    if ( func ) {
      func.call( deferred, deferred );
    }

    // All done!
    return deferred;
  },

  // Deferred helper
  when: function( subordinate /* , ..., subordinateN */ ) {
    var i = 0,
      resolveValues = slice.call( arguments ),
      length = resolveValues.length,

      // the count of uncompleted subordinates
      remaining = length !== 1 || ( subordinate && jQuery.isFunction( subordinate.promise ) ) ? length : 0,

      // the master Deferred. If resolveValues consist of only a single Deferred, just use that.
      deferred = remaining === 1 ? subordinate : jQuery.Deferred(),

      // Update function for both resolve and progress values
      updateFunc = function( i, contexts, values ) {
        return function( value ) {
          contexts[ i ] = this;
          values[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
          if ( values === progressValues ) {
            deferred.notifyWith( contexts, values );

          } else if ( !(--remaining) ) {
            deferred.resolveWith( contexts, values );
          }
        };
      },

      progressValues, progressContexts, resolveContexts;

    // add listeners to Deferred subordinates; treat others as resolved
    if ( length > 1 ) {
      progressValues = new Array( length );
      progressContexts = new Array( length );
      resolveContexts = new Array( length );
      for ( ; i < length; i++ ) {
        if ( resolveValues[ i ] && jQuery.isFunction( resolveValues[ i ].promise ) ) {
          resolveValues[ i ].promise()
            .done( updateFunc( i, resolveContexts, resolveValues ) )
            .fail( deferred.reject )
            .progress( updateFunc( i, progressContexts, progressValues ) );
        } else {
          --remaining;
        }
      }
    }

    // if we're not waiting on anything, resolve the master
    if ( !remaining ) {
      deferred.resolveWith( resolveContexts, resolveValues );
    }

    return deferred.promise();
  }
});


// The deferred used on DOM ready
var readyList;

jQuery.fn.ready = function( fn ) {
  // Add the callback
  jQuery.ready.promise().done( fn );

  return this;
};

jQuery.extend({
  // Is the DOM ready to be used? Set to true once it occurs.
  isReady: false,

  // A counter to track how many items to wait for before
  // the ready event fires. See #6781
  readyWait: 1,

  // Hold (or release) the ready event
  holdReady: function( hold ) {
    if ( hold ) {
      jQuery.readyWait++;
    } else {
      jQuery.ready( true );
    }
  },

  // Handle when the DOM is ready
  ready: function( wait ) {

    // Abort if there are pending holds or we're already ready
    if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
      return;
    }

    // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
    if ( !document.body ) {
      return setTimeout( jQuery.ready );
    }

    // Remember that the DOM is ready
    jQuery.isReady = true;

    // If a normal DOM Ready event fired, decrement, and wait if need be
    if ( wait !== true && --jQuery.readyWait > 0 ) {
      return;
    }

    // If there are functions bound, to execute
    readyList.resolveWith( document, [ jQuery ] );

    // Trigger any bound ready events
    if ( jQuery.fn.triggerHandler ) {
      jQuery( document ).triggerHandler( "ready" );
      jQuery( document ).off( "ready" );
    }
  }
});

/**
 * Clean-up method for dom ready events
 */
function detach() {
  if ( document.addEventListener ) {
    document.removeEventListener( "DOMContentLoaded", completed, false );
    window.removeEventListener( "load", completed, false );

  } else {
    document.detachEvent( "onreadystatechange", completed );
    window.detachEvent( "onload", completed );
  }
}

/**
 * The ready event handler and self cleanup method
 */
function completed() {
  // readyState === "complete" is good enough for us to call the dom ready in oldIE
  if ( document.addEventListener || event.type === "load" || document.readyState === "complete" ) {
    detach();
    jQuery.ready();
  }
}

jQuery.ready.promise = function( obj ) {
  if ( !readyList ) {

    readyList = jQuery.Deferred();

    // Catch cases where $(document).ready() is called after the browser event has already occurred.
    // we once tried to use readyState "interactive" here, but it caused issues like the one
    // discovered by ChrisS here: http://bugs.jquery.com/ticket/12282#comment:15
    if ( document.readyState === "complete" ) {
      // Handle it asynchronously to allow scripts the opportunity to delay ready
      setTimeout( jQuery.ready );

    // Standards-based browsers support DOMContentLoaded
    } else if ( document.addEventListener ) {
      // Use the handy event callback
      document.addEventListener( "DOMContentLoaded", completed, false );

      // A fallback to window.onload, that will always work
      window.addEventListener( "load", completed, false );

    // If IE event model is used
    } else {
      // Ensure firing before onload, maybe late but safe also for iframes
      document.attachEvent( "onreadystatechange", completed );

      // A fallback to window.onload, that will always work
      window.attachEvent( "onload", completed );

      // If IE and not a frame
      // continually check to see if the document is ready
      var top = false;

      try {
        top = window.frameElement == null && document.documentElement;
      } catch(e) {}

      if ( top && top.doScroll ) {
        (function doScrollCheck() {
          if ( !jQuery.isReady ) {

            try {
              // Use the trick by Diego Perini
              // http://javascript.nwbox.com/IEContentLoaded/
              top.doScroll("left");
            } catch(e) {
              return setTimeout( doScrollCheck, 50 );
            }

            // detach all dom ready events
            detach();

            // and execute any waiting functions
            jQuery.ready();
          }
        })();
      }
    }
  }
  return readyList.promise( obj );
};


var strundefined = typeof undefined;



// Support: IE<9
// Iteration over object's inherited properties before its own
var i;
for ( i in jQuery( support ) ) {
  break;
}
support.ownLast = i !== "0";

// Note: most support tests are defined in their respective modules.
// false until the test is run
support.inlineBlockNeedsLayout = false;

// Execute ASAP in case we need to set body.style.zoom
jQuery(function() {
  // Minified: var a,b,c,d
  var val, div, body, container;

  body = document.getElementsByTagName( "body" )[ 0 ];
  if ( !body || !body.style ) {
    // Return for frameset docs that don't have a body
    return;
  }

  // Setup
  div = document.createElement( "div" );
  container = document.createElement( "div" );
  container.style.cssText = "position:absolute;border:0;width:0;height:0;top:0;left:-9999px";
  body.appendChild( container ).appendChild( div );

  if ( typeof div.style.zoom !== strundefined ) {
    // Support: IE<8
    // Check if natively block-level elements act like inline-block
    // elements when setting their display to 'inline' and giving
    // them layout
    div.style.cssText = "display:inline;margin:0;border:0;padding:1px;width:1px;zoom:1";

    support.inlineBlockNeedsLayout = val = div.offsetWidth === 3;
    if ( val ) {
      // Prevent IE 6 from affecting layout for positioned elements #11048
      // Prevent IE from shrinking the body in IE 7 mode #12869
      // Support: IE<8
      body.style.zoom = 1;
    }
  }

  body.removeChild( container );
});




(function() {
  var div = document.createElement( "div" );

  // Execute the test only if not already executed in another module.
  if (support.deleteExpando == null) {
    // Support: IE<9
    support.deleteExpando = true;
    try {
      delete div.test;
    } catch( e ) {
      support.deleteExpando = false;
    }
  }

  // Null elements to avoid leaks in IE.
  div = null;
})();


/**
 * Determines whether an object can have data
 */
jQuery.acceptData = function( elem ) {
  var noData = jQuery.noData[ (elem.nodeName + " ").toLowerCase() ],
    nodeType = +elem.nodeType || 1;

  // Do not set data on non-element DOM nodes because it will not be cleared (#8335).
  return nodeType !== 1 && nodeType !== 9 ?
    false :

    // Nodes accept data unless otherwise specified; rejection can be conditional
    !noData || noData !== true && elem.getAttribute("classid") === noData;
};


var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
  rmultiDash = /([A-Z])/g;

function dataAttr( elem, key, data ) {
  // If nothing was found internally, try to fetch any
  // data from the HTML5 data-* attribute
  if ( data === undefined && elem.nodeType === 1 ) {

    var name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase();

    data = elem.getAttribute( name );

    if ( typeof data === "string" ) {
      try {
        data = data === "true" ? true :
          data === "false" ? false :
          data === "null" ? null :
          // Only convert to a number if it doesn't change the string
          +data + "" === data ? +data :
          rbrace.test( data ) ? jQuery.parseJSON( data ) :
          data;
      } catch( e ) {}

      // Make sure we set the data so it isn't changed later
      jQuery.data( elem, key, data );

    } else {
      data = undefined;
    }
  }

  return data;
}

// checks a cache object for emptiness
function isEmptyDataObject( obj ) {
  var name;
  for ( name in obj ) {

    // if the public data object is empty, the private is still empty
    if ( name === "data" && jQuery.isEmptyObject( obj[name] ) ) {
      continue;
    }
    if ( name !== "toJSON" ) {
      return false;
    }
  }

  return true;
}

function internalData( elem, name, data, pvt /* Internal Use Only */ ) {
  if ( !jQuery.acceptData( elem ) ) {
    return;
  }

  var ret, thisCache,
    internalKey = jQuery.expando,

    // We have to handle DOM nodes and JS objects differently because IE6-7
    // can't GC object references properly across the DOM-JS boundary
    isNode = elem.nodeType,

    // Only DOM nodes need the global jQuery cache; JS object data is
    // attached directly to the object so GC can occur automatically
    cache = isNode ? jQuery.cache : elem,

    // Only defining an ID for JS objects if its cache already exists allows
    // the code to shortcut on the same path as a DOM node with no cache
    id = isNode ? elem[ internalKey ] : elem[ internalKey ] && internalKey;

  // Avoid doing any more work than we need to when trying to get data on an
  // object that has no data at all
  if ( (!id || !cache[id] || (!pvt && !cache[id].data)) && data === undefined && typeof name === "string" ) {
    return;
  }

  if ( !id ) {
    // Only DOM nodes need a new unique ID for each element since their data
    // ends up in the global cache
    if ( isNode ) {
      id = elem[ internalKey ] = deletedIds.pop() || jQuery.guid++;
    } else {
      id = internalKey;
    }
  }

  if ( !cache[ id ] ) {
    // Avoid exposing jQuery metadata on plain JS objects when the object
    // is serialized using JSON.stringify
    cache[ id ] = isNode ? {} : { toJSON: jQuery.noop };
  }

  // An object can be passed to jQuery.data instead of a key/value pair; this gets
  // shallow copied over onto the existing cache
  if ( typeof name === "object" || typeof name === "function" ) {
    if ( pvt ) {
      cache[ id ] = jQuery.extend( cache[ id ], name );
    } else {
      cache[ id ].data = jQuery.extend( cache[ id ].data, name );
    }
  }

  thisCache = cache[ id ];

  // jQuery data() is stored in a separate object inside the object's internal data
  // cache in order to avoid key collisions between internal data and user-defined
  // data.
  if ( !pvt ) {
    if ( !thisCache.data ) {
      thisCache.data = {};
    }

    thisCache = thisCache.data;
  }

  if ( data !== undefined ) {
    thisCache[ jQuery.camelCase( name ) ] = data;
  }

  // Check for both converted-to-camel and non-converted data property names
  // If a data property was specified
  if ( typeof name === "string" ) {

    // First Try to find as-is property data
    ret = thisCache[ name ];

    // Test for null|undefined property data
    if ( ret == null ) {

      // Try to find the camelCased property
      ret = thisCache[ jQuery.camelCase( name ) ];
    }
  } else {
    ret = thisCache;
  }

  return ret;
}

function internalRemoveData( elem, name, pvt ) {
  if ( !jQuery.acceptData( elem ) ) {
    return;
  }

  var thisCache, i,
    isNode = elem.nodeType,

    // See jQuery.data for more information
    cache = isNode ? jQuery.cache : elem,
    id = isNode ? elem[ jQuery.expando ] : jQuery.expando;

  // If there is already no cache entry for this object, there is no
  // purpose in continuing
  if ( !cache[ id ] ) {
    return;
  }

  if ( name ) {

    thisCache = pvt ? cache[ id ] : cache[ id ].data;

    if ( thisCache ) {

      // Support array or space separated string names for data keys
      if ( !jQuery.isArray( name ) ) {

        // try the string as a key before any manipulation
        if ( name in thisCache ) {
          name = [ name ];
        } else {

          // split the camel cased version by spaces unless a key with the spaces exists
          name = jQuery.camelCase( name );
          if ( name in thisCache ) {
            name = [ name ];
          } else {
            name = name.split(" ");
          }
        }
      } else {
        // If "name" is an array of keys...
        // When data is initially created, via ("key", "val") signature,
        // keys will be converted to camelCase.
        // Since there is no way to tell _how_ a key was added, remove
        // both plain key and camelCase key. #12786
        // This will only penalize the array argument path.
        name = name.concat( jQuery.map( name, jQuery.camelCase ) );
      }

      i = name.length;
      while ( i-- ) {
        delete thisCache[ name[i] ];
      }

      // If there is no data left in the cache, we want to continue
      // and let the cache object itself get destroyed
      if ( pvt ? !isEmptyDataObject(thisCache) : !jQuery.isEmptyObject(thisCache) ) {
        return;
      }
    }
  }

  // See jQuery.data for more information
  if ( !pvt ) {
    delete cache[ id ].data;

    // Don't destroy the parent cache unless the internal data object
    // had been the only thing left in it
    if ( !isEmptyDataObject( cache[ id ] ) ) {
      return;
    }
  }

  // Destroy the cache
  if ( isNode ) {
    jQuery.cleanData( [ elem ], true );

  // Use delete when supported for expandos or `cache` is not a window per isWindow (#10080)
  /* jshint eqeqeq: false */
  } else if ( support.deleteExpando || cache != cache.window ) {
    /* jshint eqeqeq: true */
    delete cache[ id ];

  // When all else fails, null
  } else {
    cache[ id ] = null;
  }
}

jQuery.extend({
  cache: {},

  // The following elements (space-suffixed to avoid Object.prototype collisions)
  // throw uncatchable exceptions if you attempt to set expando properties
  noData: {
    "applet ": true,
    "embed ": true,
    // ...but Flash objects (which have this classid) *can* handle expandos
    "object ": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
  },

  hasData: function( elem ) {
    elem = elem.nodeType ? jQuery.cache[ elem[jQuery.expando] ] : elem[ jQuery.expando ];
    return !!elem && !isEmptyDataObject( elem );
  },

  data: function( elem, name, data ) {
    return internalData( elem, name, data );
  },

  removeData: function( elem, name ) {
    return internalRemoveData( elem, name );
  },

  // For internal use only.
  _data: function( elem, name, data ) {
    return internalData( elem, name, data, true );
  },

  _removeData: function( elem, name ) {
    return internalRemoveData( elem, name, true );
  }
});

jQuery.fn.extend({
  data: function( key, value ) {
    var i, name, data,
      elem = this[0],
      attrs = elem && elem.attributes;

    // Special expections of .data basically thwart jQuery.access,
    // so implement the relevant behavior ourselves

    // Gets all values
    if ( key === undefined ) {
      if ( this.length ) {
        data = jQuery.data( elem );

        if ( elem.nodeType === 1 && !jQuery._data( elem, "parsedAttrs" ) ) {
          i = attrs.length;
          while ( i-- ) {

            // Support: IE11+
            // The attrs elements can be null (#14894)
            if ( attrs[ i ] ) {
              name = attrs[ i ].name;
              if ( name.indexOf( "data-" ) === 0 ) {
                name = jQuery.camelCase( name.slice(5) );
                dataAttr( elem, name, data[ name ] );
              }
            }
          }
          jQuery._data( elem, "parsedAttrs", true );
        }
      }

      return data;
    }

    // Sets multiple values
    if ( typeof key === "object" ) {
      return this.each(function() {
        jQuery.data( this, key );
      });
    }

    return arguments.length > 1 ?

      // Sets one value
      this.each(function() {
        jQuery.data( this, key, value );
      }) :

      // Gets one value
      // Try to fetch any internally stored data first
      elem ? dataAttr( elem, key, jQuery.data( elem, key ) ) : undefined;
  },

  removeData: function( key ) {
    return this.each(function() {
      jQuery.removeData( this, key );
    });
  }
});


jQuery.extend({
  queue: function( elem, type, data ) {
    var queue;

    if ( elem ) {
      type = ( type || "fx" ) + "queue";
      queue = jQuery._data( elem, type );

      // Speed up dequeue by getting out quickly if this is just a lookup
      if ( data ) {
        if ( !queue || jQuery.isArray(data) ) {
          queue = jQuery._data( elem, type, jQuery.makeArray(data) );
        } else {
          queue.push( data );
        }
      }
      return queue || [];
    }
  },

  dequeue: function( elem, type ) {
    type = type || "fx";

    var queue = jQuery.queue( elem, type ),
      startLength = queue.length,
      fn = queue.shift(),
      hooks = jQuery._queueHooks( elem, type ),
      next = function() {
        jQuery.dequeue( elem, type );
      };

    // If the fx queue is dequeued, always remove the progress sentinel
    if ( fn === "inprogress" ) {
      fn = queue.shift();
      startLength--;
    }

    if ( fn ) {

      // Add a progress sentinel to prevent the fx queue from being
      // automatically dequeued
      if ( type === "fx" ) {
        queue.unshift( "inprogress" );
      }

      // clear up the last queue stop function
      delete hooks.stop;
      fn.call( elem, next, hooks );
    }

    if ( !startLength && hooks ) {
      hooks.empty.fire();
    }
  },

  // not intended for public consumption - generates a queueHooks object, or returns the current one
  _queueHooks: function( elem, type ) {
    var key = type + "queueHooks";
    return jQuery._data( elem, key ) || jQuery._data( elem, key, {
      empty: jQuery.Callbacks("once memory").add(function() {
        jQuery._removeData( elem, type + "queue" );
        jQuery._removeData( elem, key );
      })
    });
  }
});

jQuery.fn.extend({
  queue: function( type, data ) {
    var setter = 2;

    if ( typeof type !== "string" ) {
      data = type;
      type = "fx";
      setter--;
    }

    if ( arguments.length < setter ) {
      return jQuery.queue( this[0], type );
    }

    return data === undefined ?
      this :
      this.each(function() {
        var queue = jQuery.queue( this, type, data );

        // ensure a hooks for this queue
        jQuery._queueHooks( this, type );

        if ( type === "fx" && queue[0] !== "inprogress" ) {
          jQuery.dequeue( this, type );
        }
      });
  },
  dequeue: function( type ) {
    return this.each(function() {
      jQuery.dequeue( this, type );
    });
  },
  clearQueue: function( type ) {
    return this.queue( type || "fx", [] );
  },
  // Get a promise resolved when queues of a certain type
  // are emptied (fx is the type by default)
  promise: function( type, obj ) {
    var tmp,
      count = 1,
      defer = jQuery.Deferred(),
      elements = this,
      i = this.length,
      resolve = function() {
        if ( !( --count ) ) {
          defer.resolveWith( elements, [ elements ] );
        }
      };

    if ( typeof type !== "string" ) {
      obj = type;
      type = undefined;
    }
    type = type || "fx";

    while ( i-- ) {
      tmp = jQuery._data( elements[ i ], type + "queueHooks" );
      if ( tmp && tmp.empty ) {
        count++;
        tmp.empty.add( resolve );
      }
    }
    resolve();
    return defer.promise( obj );
  }
});
var pnum = (/[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/).source;

var cssExpand = [ "Top", "Right", "Bottom", "Left" ];

var isHidden = function( elem, el ) {
    // isHidden might be called from jQuery#filter function;
    // in that case, element will be second argument
    elem = el || elem;
    return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem );
  };



// Multifunctional method to get and set values of a collection
// The value/s can optionally be executed if it's a function
var access = jQuery.access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
  var i = 0,
    length = elems.length,
    bulk = key == null;

  // Sets many values
  if ( jQuery.type( key ) === "object" ) {
    chainable = true;
    for ( i in key ) {
      jQuery.access( elems, fn, i, key[i], true, emptyGet, raw );
    }

  // Sets one value
  } else if ( value !== undefined ) {
    chainable = true;

    if ( !jQuery.isFunction( value ) ) {
      raw = true;
    }

    if ( bulk ) {
      // Bulk operations run against the entire set
      if ( raw ) {
        fn.call( elems, value );
        fn = null;

      // ...except when executing function values
      } else {
        bulk = fn;
        fn = function( elem, key, value ) {
          return bulk.call( jQuery( elem ), value );
        };
      }
    }

    if ( fn ) {
      for ( ; i < length; i++ ) {
        fn( elems[i], key, raw ? value : value.call( elems[i], i, fn( elems[i], key ) ) );
      }
    }
  }

  return chainable ?
    elems :

    // Gets
    bulk ?
      fn.call( elems ) :
      length ? fn( elems[0], key ) : emptyGet;
};
var rcheckableType = (/^(?:checkbox|radio)$/i);



(function() {
  // Minified: var a,b,c
  var input = document.createElement( "input" ),
    div = document.createElement( "div" ),
    fragment = document.createDocumentFragment();

  // Setup
  div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";

  // IE strips leading whitespace when .innerHTML is used
  support.leadingWhitespace = div.firstChild.nodeType === 3;

  // Make sure that tbody elements aren't automatically inserted
  // IE will insert them into empty tables
  support.tbody = !div.getElementsByTagName( "tbody" ).length;

  // Make sure that link elements get serialized correctly by innerHTML
  // This requires a wrapper element in IE
  support.htmlSerialize = !!div.getElementsByTagName( "link" ).length;

  // Makes sure cloning an html5 element does not cause problems
  // Where outerHTML is undefined, this still works
  support.html5Clone =
    document.createElement( "nav" ).cloneNode( true ).outerHTML !== "<:nav></:nav>";

  // Check if a disconnected checkbox will retain its checked
  // value of true after appended to the DOM (IE6/7)
  input.type = "checkbox";
  input.checked = true;
  fragment.appendChild( input );
  support.appendChecked = input.checked;

  // Make sure textarea (and checkbox) defaultValue is properly cloned
  // Support: IE6-IE11+
  div.innerHTML = "<textarea>x</textarea>";
  support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;

  // #11217 - WebKit loses check when the name is after the checked attribute
  fragment.appendChild( div );
  div.innerHTML = "<input type='radio' checked='checked' name='t'/>";

  // Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3
  // old WebKit doesn't clone checked state correctly in fragments
  support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;

  // Support: IE<9
  // Opera does not clone events (and typeof div.attachEvent === undefined).
  // IE9-10 clones events bound via attachEvent, but they don't trigger with .click()
  support.noCloneEvent = true;
  if ( div.attachEvent ) {
    div.attachEvent( "onclick", function() {
      support.noCloneEvent = false;
    });

    div.cloneNode( true ).click();
  }

  // Execute the test only if not already executed in another module.
  if (support.deleteExpando == null) {
    // Support: IE<9
    support.deleteExpando = true;
    try {
      delete div.test;
    } catch( e ) {
      support.deleteExpando = false;
    }
  }
})();


(function() {
  var i, eventName,
    div = document.createElement( "div" );

  // Support: IE<9 (lack submit/change bubble), Firefox 23+ (lack focusin event)
  for ( i in { submit: true, change: true, focusin: true }) {
    eventName = "on" + i;

    if ( !(support[ i + "Bubbles" ] = eventName in window) ) {
      // Beware of CSP restrictions (https://developer.mozilla.org/en/Security/CSP)
      div.setAttribute( eventName, "t" );
      support[ i + "Bubbles" ] = div.attributes[ eventName ].expando === false;
    }
  }

  // Null elements to avoid leaks in IE.
  div = null;
})();


var rformElems = /^(?:input|select|textarea)$/i,
  rkeyEvent = /^key/,
  rmouseEvent = /^(?:mouse|pointer|contextmenu)|click/,
  rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
  rtypenamespace = /^([^.]*)(?:\.(.+)|)$/;

function returnTrue() {
  return true;
}

function returnFalse() {
  return false;
}

function safeActiveElement() {
  try {
    return document.activeElement;
  } catch ( err ) { }
}

/*
 * Helper functions for managing events -- not part of the public interface.
 * Props to Dean Edwards' addEvent library for many of the ideas.
 */
jQuery.event = {

  global: {},

  add: function( elem, types, handler, data, selector ) {
    var tmp, events, t, handleObjIn,
      special, eventHandle, handleObj,
      handlers, type, namespaces, origType,
      elemData = jQuery._data( elem );

    // Don't attach events to noData or text/comment nodes (but allow plain objects)
    if ( !elemData ) {
      return;
    }

    // Caller can pass in an object of custom data in lieu of the handler
    if ( handler.handler ) {
      handleObjIn = handler;
      handler = handleObjIn.handler;
      selector = handleObjIn.selector;
    }

    // Make sure that the handler has a unique ID, used to find/remove it later
    if ( !handler.guid ) {
      handler.guid = jQuery.guid++;
    }

    // Init the element's event structure and main handler, if this is the first
    if ( !(events = elemData.events) ) {
      events = elemData.events = {};
    }
    if ( !(eventHandle = elemData.handle) ) {
      eventHandle = elemData.handle = function( e ) {
        // Discard the second event of a jQuery.event.trigger() and
        // when an event is called after a page has unloaded
        return typeof jQuery !== strundefined && (!e || jQuery.event.triggered !== e.type) ?
          jQuery.event.dispatch.apply( eventHandle.elem, arguments ) :
          undefined;
      };
      // Add elem as a property of the handle fn to prevent a memory leak with IE non-native events
      eventHandle.elem = elem;
    }

    // Handle multiple events separated by a space
    types = ( types || "" ).match( rnotwhite ) || [ "" ];
    t = types.length;
    while ( t-- ) {
      tmp = rtypenamespace.exec( types[t] ) || [];
      type = origType = tmp[1];
      namespaces = ( tmp[2] || "" ).split( "." ).sort();

      // There *must* be a type, no attaching namespace-only handlers
      if ( !type ) {
        continue;
      }

      // If event changes its type, use the special event handlers for the changed type
      special = jQuery.event.special[ type ] || {};

      // If selector defined, determine special event api type, otherwise given type
      type = ( selector ? special.delegateType : special.bindType ) || type;

      // Update special based on newly reset type
      special = jQuery.event.special[ type ] || {};

      // handleObj is passed to all event handlers
      handleObj = jQuery.extend({
        type: type,
        origType: origType,
        data: data,
        handler: handler,
        guid: handler.guid,
        selector: selector,
        needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
        namespace: namespaces.join(".")
      }, handleObjIn );

      // Init the event handler queue if we're the first
      if ( !(handlers = events[ type ]) ) {
        handlers = events[ type ] = [];
        handlers.delegateCount = 0;

        // Only use addEventListener/attachEvent if the special events handler returns false
        if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
          // Bind the global event handler to the element
          if ( elem.addEventListener ) {
            elem.addEventListener( type, eventHandle, false );

          } else if ( elem.attachEvent ) {
            elem.attachEvent( "on" + type, eventHandle );
          }
        }
      }

      if ( special.add ) {
        special.add.call( elem, handleObj );

        if ( !handleObj.handler.guid ) {
          handleObj.handler.guid = handler.guid;
        }
      }

      // Add to the element's handler list, delegates in front
      if ( selector ) {
        handlers.splice( handlers.delegateCount++, 0, handleObj );
      } else {
        handlers.push( handleObj );
      }

      // Keep track of which events have ever been used, for event optimization
      jQuery.event.global[ type ] = true;
    }

    // Nullify elem to prevent memory leaks in IE
    elem = null;
  },

  // Detach an event or set of events from an element
  remove: function( elem, types, handler, selector, mappedTypes ) {
    var j, handleObj, tmp,
      origCount, t, events,
      special, handlers, type,
      namespaces, origType,
      elemData = jQuery.hasData( elem ) && jQuery._data( elem );

    if ( !elemData || !(events = elemData.events) ) {
      return;
    }

    // Once for each type.namespace in types; type may be omitted
    types = ( types || "" ).match( rnotwhite ) || [ "" ];
    t = types.length;
    while ( t-- ) {
      tmp = rtypenamespace.exec( types[t] ) || [];
      type = origType = tmp[1];
      namespaces = ( tmp[2] || "" ).split( "." ).sort();

      // Unbind all events (on this namespace, if provided) for the element
      if ( !type ) {
        for ( type in events ) {
          jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
        }
        continue;
      }

      special = jQuery.event.special[ type ] || {};
      type = ( selector ? special.delegateType : special.bindType ) || type;
      handlers = events[ type ] || [];
      tmp = tmp[2] && new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" );

      // Remove matching events
      origCount = j = handlers.length;
      while ( j-- ) {
        handleObj = handlers[ j ];

        if ( ( mappedTypes || origType === handleObj.origType ) &&
          ( !handler || handler.guid === handleObj.guid ) &&
          ( !tmp || tmp.test( handleObj.namespace ) ) &&
          ( !selector || selector === handleObj.selector || selector === "**" && handleObj.selector ) ) {
          handlers.splice( j, 1 );

          if ( handleObj.selector ) {
            handlers.delegateCount--;
          }
          if ( special.remove ) {
            special.remove.call( elem, handleObj );
          }
        }
      }

      // Remove generic event handler if we removed something and no more handlers exist
      // (avoids potential for endless recursion during removal of special event handlers)
      if ( origCount && !handlers.length ) {
        if ( !special.teardown || special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
          jQuery.removeEvent( elem, type, elemData.handle );
        }

        delete events[ type ];
      }
    }

    // Remove the expando if it's no longer used
    if ( jQuery.isEmptyObject( events ) ) {
      delete elemData.handle;

      // removeData also checks for emptiness and clears the expando if empty
      // so use it instead of delete
      jQuery._removeData( elem, "events" );
    }
  },

  trigger: function( event, data, elem, onlyHandlers ) {
    var handle, ontype, cur,
      bubbleType, special, tmp, i,
      eventPath = [ elem || document ],
      type = hasOwn.call( event, "type" ) ? event.type : event,
      namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split(".") : [];

    cur = tmp = elem = elem || document;

    // Don't do events on text and comment nodes
    if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
      return;
    }

    // focus/blur morphs to focusin/out; ensure we're not firing them right now
    if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
      return;
    }

    if ( type.indexOf(".") >= 0 ) {
      // Namespaced trigger; create a regexp to match event type in handle()
      namespaces = type.split(".");
      type = namespaces.shift();
      namespaces.sort();
    }
    ontype = type.indexOf(":") < 0 && "on" + type;

    // Caller can pass in a jQuery.Event object, Object, or just an event type string
    event = event[ jQuery.expando ] ?
      event :
      new jQuery.Event( type, typeof event === "object" && event );

    // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
    event.isTrigger = onlyHandlers ? 2 : 3;
    event.namespace = namespaces.join(".");
    event.namespace_re = event.namespace ?
      new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" ) :
      null;

    // Clean up the event in case it is being reused
    event.result = undefined;
    if ( !event.target ) {
      event.target = elem;
    }

    // Clone any incoming data and prepend the event, creating the handler arg list
    data = data == null ?
      [ event ] :
      jQuery.makeArray( data, [ event ] );

    // Allow special events to draw outside the lines
    special = jQuery.event.special[ type ] || {};
    if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
      return;
    }

    // Determine event propagation path in advance, per W3C events spec (#9951)
    // Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
    if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {

      bubbleType = special.delegateType || type;
      if ( !rfocusMorph.test( bubbleType + type ) ) {
        cur = cur.parentNode;
      }
      for ( ; cur; cur = cur.parentNode ) {
        eventPath.push( cur );
        tmp = cur;
      }

      // Only add window if we got to document (e.g., not plain obj or detached DOM)
      if ( tmp === (elem.ownerDocument || document) ) {
        eventPath.push( tmp.defaultView || tmp.parentWindow || window );
      }
    }

    // Fire handlers on the event path
    i = 0;
    while ( (cur = eventPath[i++]) && !event.isPropagationStopped() ) {

      event.type = i > 1 ?
        bubbleType :
        special.bindType || type;

      // jQuery handler
      handle = ( jQuery._data( cur, "events" ) || {} )[ event.type ] && jQuery._data( cur, "handle" );
      if ( handle ) {
        handle.apply( cur, data );
      }

      // Native handler
      handle = ontype && cur[ ontype ];
      if ( handle && handle.apply && jQuery.acceptData( cur ) ) {
        event.result = handle.apply( cur, data );
        if ( event.result === false ) {
          event.preventDefault();
        }
      }
    }
    event.type = type;

    // If nobody prevented the default action, do it now
    if ( !onlyHandlers && !event.isDefaultPrevented() ) {

      if ( (!special._default || special._default.apply( eventPath.pop(), data ) === false) &&
        jQuery.acceptData( elem ) ) {

        // Call a native DOM method on the target with the same name name as the event.
        // Can't use an .isFunction() check here because IE6/7 fails that test.
        // Don't do default actions on window, that's where global variables be (#6170)
        if ( ontype && elem[ type ] && !jQuery.isWindow( elem ) ) {

          // Don't re-trigger an onFOO event when we call its FOO() method
          tmp = elem[ ontype ];

          if ( tmp ) {
            elem[ ontype ] = null;
          }

          // Prevent re-triggering of the same event, since we already bubbled it above
          jQuery.event.triggered = type;
          try {
            elem[ type ]();
          } catch ( e ) {
            // IE<9 dies on focus/blur to hidden element (#1486,#12518)
            // only reproducible on winXP IE8 native, not IE9 in IE8 mode
          }
          jQuery.event.triggered = undefined;

          if ( tmp ) {
            elem[ ontype ] = tmp;
          }
        }
      }
    }

    return event.result;
  },

  dispatch: function( event ) {

    // Make a writable jQuery.Event from the native event object
    event = jQuery.event.fix( event );

    var i, ret, handleObj, matched, j,
      handlerQueue = [],
      args = slice.call( arguments ),
      handlers = ( jQuery._data( this, "events" ) || {} )[ event.type ] || [],
      special = jQuery.event.special[ event.type ] || {};

    // Use the fix-ed jQuery.Event rather than the (read-only) native event
    args[0] = event;
    event.delegateTarget = this;

    // Call the preDispatch hook for the mapped type, and let it bail if desired
    if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
      return;
    }

    // Determine handlers
    handlerQueue = jQuery.event.handlers.call( this, event, handlers );

    // Run delegates first; they may want to stop propagation beneath us
    i = 0;
    while ( (matched = handlerQueue[ i++ ]) && !event.isPropagationStopped() ) {
      event.currentTarget = matched.elem;

      j = 0;
      while ( (handleObj = matched.handlers[ j++ ]) && !event.isImmediatePropagationStopped() ) {

        // Triggered event must either 1) have no namespace, or
        // 2) have namespace(s) a subset or equal to those in the bound event (both can have no namespace).
        if ( !event.namespace_re || event.namespace_re.test( handleObj.namespace ) ) {

          event.handleObj = handleObj;
          event.data = handleObj.data;

          ret = ( (jQuery.event.special[ handleObj.origType ] || {}).handle || handleObj.handler )
              .apply( matched.elem, args );

          if ( ret !== undefined ) {
            if ( (event.result = ret) === false ) {
              event.preventDefault();
              event.stopPropagation();
            }
          }
        }
      }
    }

    // Call the postDispatch hook for the mapped type
    if ( special.postDispatch ) {
      special.postDispatch.call( this, event );
    }

    return event.result;
  },

  handlers: function( event, handlers ) {
    var sel, handleObj, matches, i,
      handlerQueue = [],
      delegateCount = handlers.delegateCount,
      cur = event.target;

    // Find delegate handlers
    // Black-hole SVG <use> instance trees (#13180)
    // Avoid non-left-click bubbling in Firefox (#3861)
    if ( delegateCount && cur.nodeType && (!event.button || event.type !== "click") ) {

      /* jshint eqeqeq: false */
      for ( ; cur != this; cur = cur.parentNode || this ) {
        /* jshint eqeqeq: true */

        // Don't check non-elements (#13208)
        // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
        if ( cur.nodeType === 1 && (cur.disabled !== true || event.type !== "click") ) {
          matches = [];
          for ( i = 0; i < delegateCount; i++ ) {
            handleObj = handlers[ i ];

            // Don't conflict with Object.prototype properties (#13203)
            sel = handleObj.selector + " ";

            if ( matches[ sel ] === undefined ) {
              matches[ sel ] = handleObj.needsContext ?
                jQuery( sel, this ).index( cur ) >= 0 :
                jQuery.find( sel, this, null, [ cur ] ).length;
            }
            if ( matches[ sel ] ) {
              matches.push( handleObj );
            }
          }
          if ( matches.length ) {
            handlerQueue.push({ elem: cur, handlers: matches });
          }
        }
      }
    }

    // Add the remaining (directly-bound) handlers
    if ( delegateCount < handlers.length ) {
      handlerQueue.push({ elem: this, handlers: handlers.slice( delegateCount ) });
    }

    return handlerQueue;
  },

  fix: function( event ) {
    if ( event[ jQuery.expando ] ) {
      return event;
    }

    // Create a writable copy of the event object and normalize some properties
    var i, prop, copy,
      type = event.type,
      originalEvent = event,
      fixHook = this.fixHooks[ type ];

    if ( !fixHook ) {
      this.fixHooks[ type ] = fixHook =
        rmouseEvent.test( type ) ? this.mouseHooks :
        rkeyEvent.test( type ) ? this.keyHooks :
        {};
    }
    copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props;

    event = new jQuery.Event( originalEvent );

    i = copy.length;
    while ( i-- ) {
      prop = copy[ i ];
      event[ prop ] = originalEvent[ prop ];
    }

    // Support: IE<9
    // Fix target property (#1925)
    if ( !event.target ) {
      event.target = originalEvent.srcElement || document;
    }

    // Support: Chrome 23+, Safari?
    // Target should not be a text node (#504, #13143)
    if ( event.target.nodeType === 3 ) {
      event.target = event.target.parentNode;
    }

    // Support: IE<9
    // For mouse/key events, metaKey==false if it's undefined (#3368, #11328)
    event.metaKey = !!event.metaKey;

    return fixHook.filter ? fixHook.filter( event, originalEvent ) : event;
  },

  // Includes some event props shared by KeyEvent and MouseEvent
  props: "altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),

  fixHooks: {},

  keyHooks: {
    props: "char charCode key keyCode".split(" "),
    filter: function( event, original ) {

      // Add which for key events
      if ( event.which == null ) {
        event.which = original.charCode != null ? original.charCode : original.keyCode;
      }

      return event;
    }
  },

  mouseHooks: {
    props: "button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "),
    filter: function( event, original ) {
      var body, eventDoc, doc,
        button = original.button,
        fromElement = original.fromElement;

      // Calculate pageX/Y if missing and clientX/Y available
      if ( event.pageX == null && original.clientX != null ) {
        eventDoc = event.target.ownerDocument || document;
        doc = eventDoc.documentElement;
        body = eventDoc.body;

        event.pageX = original.clientX + ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - ( doc && doc.clientLeft || body && body.clientLeft || 0 );
        event.pageY = original.clientY + ( doc && doc.scrollTop  || body && body.scrollTop  || 0 ) - ( doc && doc.clientTop  || body && body.clientTop  || 0 );
      }

      // Add relatedTarget, if necessary
      if ( !event.relatedTarget && fromElement ) {
        event.relatedTarget = fromElement === event.target ? original.toElement : fromElement;
      }

      // Add which for click: 1 === left; 2 === middle; 3 === right
      // Note: button is not normalized, so don't use it
      if ( !event.which && button !== undefined ) {
        event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) );
      }

      return event;
    }
  },

  special: {
    load: {
      // Prevent triggered image.load events from bubbling to window.load
      noBubble: true
    },
    focus: {
      // Fire native event if possible so blur/focus sequence is correct
      trigger: function() {
        if ( this !== safeActiveElement() && this.focus ) {
          try {
            this.focus();
            return false;
          } catch ( e ) {
            // Support: IE<9
            // If we error on focus to hidden element (#1486, #12518),
            // let .trigger() run the handlers
          }
        }
      },
      delegateType: "focusin"
    },
    blur: {
      trigger: function() {
        if ( this === safeActiveElement() && this.blur ) {
          this.blur();
          return false;
        }
      },
      delegateType: "focusout"
    },
    click: {
      // For checkbox, fire native event so checked state will be right
      trigger: function() {
        if ( jQuery.nodeName( this, "input" ) && this.type === "checkbox" && this.click ) {
          this.click();
          return false;
        }
      },

      // For cross-browser consistency, don't fire native .click() on links
      _default: function( event ) {
        return jQuery.nodeName( event.target, "a" );
      }
    },

    beforeunload: {
      postDispatch: function( event ) {

        // Support: Firefox 20+
        // Firefox doesn't alert if the returnValue field is not set.
        if ( event.result !== undefined && event.originalEvent ) {
          event.originalEvent.returnValue = event.result;
        }
      }
    }
  },

  simulate: function( type, elem, event, bubble ) {
    // Piggyback on a donor event to simulate a different one.
    // Fake originalEvent to avoid donor's stopPropagation, but if the
    // simulated event prevents default then we do the same on the donor.
    var e = jQuery.extend(
      new jQuery.Event(),
      event,
      {
        type: type,
        isSimulated: true,
        originalEvent: {}
      }
    );
    if ( bubble ) {
      jQuery.event.trigger( e, null, elem );
    } else {
      jQuery.event.dispatch.call( elem, e );
    }
    if ( e.isDefaultPrevented() ) {
      event.preventDefault();
    }
  }
};

jQuery.removeEvent = document.removeEventListener ?
  function( elem, type, handle ) {
    if ( elem.removeEventListener ) {
      elem.removeEventListener( type, handle, false );
    }
  } :
  function( elem, type, handle ) {
    var name = "on" + type;

    if ( elem.detachEvent ) {

      // #8545, #7054, preventing memory leaks for custom events in IE6-8
      // detachEvent needed property on element, by name of that event, to properly expose it to GC
      if ( typeof elem[ name ] === strundefined ) {
        elem[ name ] = null;
      }

      elem.detachEvent( name, handle );
    }
  };

jQuery.Event = function( src, props ) {
  // Allow instantiation without the 'new' keyword
  if ( !(this instanceof jQuery.Event) ) {
    return new jQuery.Event( src, props );
  }

  // Event object
  if ( src && src.type ) {
    this.originalEvent = src;
    this.type = src.type;

    // Events bubbling up the document may have been marked as prevented
    // by a handler lower down the tree; reflect the correct value.
    this.isDefaultPrevented = src.defaultPrevented ||
        src.defaultPrevented === undefined &&
        // Support: IE < 9, Android < 4.0
        src.returnValue === false ?
      returnTrue :
      returnFalse;

  // Event type
  } else {
    this.type = src;
  }

  // Put explicitly provided properties onto the event object
  if ( props ) {
    jQuery.extend( this, props );
  }

  // Create a timestamp if incoming event doesn't have one
  this.timeStamp = src && src.timeStamp || jQuery.now();

  // Mark it as fixed
  this[ jQuery.expando ] = true;
};

// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
jQuery.Event.prototype = {
  isDefaultPrevented: returnFalse,
  isPropagationStopped: returnFalse,
  isImmediatePropagationStopped: returnFalse,

  preventDefault: function() {
    var e = this.originalEvent;

    this.isDefaultPrevented = returnTrue;
    if ( !e ) {
      return;
    }

    // If preventDefault exists, run it on the original event
    if ( e.preventDefault ) {
      e.preventDefault();

    // Support: IE
    // Otherwise set the returnValue property of the original event to false
    } else {
      e.returnValue = false;
    }
  },
  stopPropagation: function() {
    var e = this.originalEvent;

    this.isPropagationStopped = returnTrue;
    if ( !e ) {
      return;
    }
    // If stopPropagation exists, run it on the original event
    if ( e.stopPropagation ) {
      e.stopPropagation();
    }

    // Support: IE
    // Set the cancelBubble property of the original event to true
    e.cancelBubble = true;
  },
  stopImmediatePropagation: function() {
    var e = this.originalEvent;

    this.isImmediatePropagationStopped = returnTrue;

    if ( e && e.stopImmediatePropagation ) {
      e.stopImmediatePropagation();
    }

    this.stopPropagation();
  }
};

// Create mouseenter/leave events using mouseover/out and event-time checks
jQuery.each({
  mouseenter: "mouseover",
  mouseleave: "mouseout",
  pointerenter: "pointerover",
  pointerleave: "pointerout"
}, function( orig, fix ) {
  jQuery.event.special[ orig ] = {
    delegateType: fix,
    bindType: fix,

    handle: function( event ) {
      var ret,
        target = this,
        related = event.relatedTarget,
        handleObj = event.handleObj;

      // For mousenter/leave call the handler if related is outside the target.
      // NB: No relatedTarget if the mouse left/entered the browser window
      if ( !related || (related !== target && !jQuery.contains( target, related )) ) {
        event.type = handleObj.origType;
        ret = handleObj.handler.apply( this, arguments );
        event.type = fix;
      }
      return ret;
    }
  };
});

// IE submit delegation
if ( !support.submitBubbles ) {

  jQuery.event.special.submit = {
    setup: function() {
      // Only need this for delegated form submit events
      if ( jQuery.nodeName( this, "form" ) ) {
        return false;
      }

      // Lazy-add a submit handler when a descendant form may potentially be submitted
      jQuery.event.add( this, "click._submit keypress._submit", function( e ) {
        // Node name check avoids a VML-related crash in IE (#9807)
        var elem = e.target,
          form = jQuery.nodeName( elem, "input" ) || jQuery.nodeName( elem, "button" ) ? elem.form : undefined;
        if ( form && !jQuery._data( form, "submitBubbles" ) ) {
          jQuery.event.add( form, "submit._submit", function( event ) {
            event._submit_bubble = true;
          });
          jQuery._data( form, "submitBubbles", true );
        }
      });
      // return undefined since we don't need an event listener
    },

    postDispatch: function( event ) {
      // If form was submitted by the user, bubble the event up the tree
      if ( event._submit_bubble ) {
        delete event._submit_bubble;
        if ( this.parentNode && !event.isTrigger ) {
          jQuery.event.simulate( "submit", this.parentNode, event, true );
        }
      }
    },

    teardown: function() {
      // Only need this for delegated form submit events
      if ( jQuery.nodeName( this, "form" ) ) {
        return false;
      }

      // Remove delegated handlers; cleanData eventually reaps submit handlers attached above
      jQuery.event.remove( this, "._submit" );
    }
  };
}

// IE change delegation and checkbox/radio fix
if ( !support.changeBubbles ) {

  jQuery.event.special.change = {

    setup: function() {

      if ( rformElems.test( this.nodeName ) ) {
        // IE doesn't fire change on a check/radio until blur; trigger it on click
        // after a propertychange. Eat the blur-change in special.change.handle.
        // This still fires onchange a second time for check/radio after blur.
        if ( this.type === "checkbox" || this.type === "radio" ) {
          jQuery.event.add( this, "propertychange._change", function( event ) {
            if ( event.originalEvent.propertyName === "checked" ) {
              this._just_changed = true;
            }
          });
          jQuery.event.add( this, "click._change", function( event ) {
            if ( this._just_changed && !event.isTrigger ) {
              this._just_changed = false;
            }
            // Allow triggered, simulated change events (#11500)
            jQuery.event.simulate( "change", this, event, true );
          });
        }
        return false;
      }
      // Delegated event; lazy-add a change handler on descendant inputs
      jQuery.event.add( this, "beforeactivate._change", function( e ) {
        var elem = e.target;

        if ( rformElems.test( elem.nodeName ) && !jQuery._data( elem, "changeBubbles" ) ) {
          jQuery.event.add( elem, "change._change", function( event ) {
            if ( this.parentNode && !event.isSimulated && !event.isTrigger ) {
              jQuery.event.simulate( "change", this.parentNode, event, true );
            }
          });
          jQuery._data( elem, "changeBubbles", true );
        }
      });
    },

    handle: function( event ) {
      var elem = event.target;

      // Swallow native change events from checkbox/radio, we already triggered them above
      if ( this !== elem || event.isSimulated || event.isTrigger || (elem.type !== "radio" && elem.type !== "checkbox") ) {
        return event.handleObj.handler.apply( this, arguments );
      }
    },

    teardown: function() {
      jQuery.event.remove( this, "._change" );

      return !rformElems.test( this.nodeName );
    }
  };
}

// Create "bubbling" focus and blur events
if ( !support.focusinBubbles ) {
  jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) {

    // Attach a single capturing handler on the document while someone wants focusin/focusout
    var handler = function( event ) {
        jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ), true );
      };

    jQuery.event.special[ fix ] = {
      setup: function() {
        var doc = this.ownerDocument || this,
          attaches = jQuery._data( doc, fix );

        if ( !attaches ) {
          doc.addEventListener( orig, handler, true );
        }
        jQuery._data( doc, fix, ( attaches || 0 ) + 1 );
      },
      teardown: function() {
        var doc = this.ownerDocument || this,
          attaches = jQuery._data( doc, fix ) - 1;

        if ( !attaches ) {
          doc.removeEventListener( orig, handler, true );
          jQuery._removeData( doc, fix );
        } else {
          jQuery._data( doc, fix, attaches );
        }
      }
    };
  });
}

jQuery.fn.extend({

  on: function( types, selector, data, fn, /*INTERNAL*/ one ) {
    var type, origFn;

    // Types can be a map of types/handlers
    if ( typeof types === "object" ) {
      // ( types-Object, selector, data )
      if ( typeof selector !== "string" ) {
        // ( types-Object, data )
        data = data || selector;
        selector = undefined;
      }
      for ( type in types ) {
        this.on( type, selector, data, types[ type ], one );
      }
      return this;
    }

    if ( data == null && fn == null ) {
      // ( types, fn )
      fn = selector;
      data = selector = undefined;
    } else if ( fn == null ) {
      if ( typeof selector === "string" ) {
        // ( types, selector, fn )
        fn = data;
        data = undefined;
      } else {
        // ( types, data, fn )
        fn = data;
        data = selector;
        selector = undefined;
      }
    }
    if ( fn === false ) {
      fn = returnFalse;
    } else if ( !fn ) {
      return this;
    }

    if ( one === 1 ) {
      origFn = fn;
      fn = function( event ) {
        // Can use an empty set, since event contains the info
        jQuery().off( event );
        return origFn.apply( this, arguments );
      };
      // Use same guid so caller can remove using origFn
      fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
    }
    return this.each( function() {
      jQuery.event.add( this, types, fn, data, selector );
    });
  },
  one: function( types, selector, data, fn ) {
    return this.on( types, selector, data, fn, 1 );
  },
  off: function( types, selector, fn ) {
    var handleObj, type;
    if ( types && types.preventDefault && types.handleObj ) {
      // ( event )  dispatched jQuery.Event
      handleObj = types.handleObj;
      jQuery( types.delegateTarget ).off(
        handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType,
        handleObj.selector,
        handleObj.handler
      );
      return this;
    }
    if ( typeof types === "object" ) {
      // ( types-object [, selector] )
      for ( type in types ) {
        this.off( type, selector, types[ type ] );
      }
      return this;
    }
    if ( selector === false || typeof selector === "function" ) {
      // ( types [, fn] )
      fn = selector;
      selector = undefined;
    }
    if ( fn === false ) {
      fn = returnFalse;
    }
    return this.each(function() {
      jQuery.event.remove( this, types, fn, selector );
    });
  },

  trigger: function( type, data ) {
    return this.each(function() {
      jQuery.event.trigger( type, data, this );
    });
  },
  triggerHandler: function( type, data ) {
    var elem = this[0];
    if ( elem ) {
      return jQuery.event.trigger( type, data, elem, true );
    }
  }
});


function createSafeFragment( document ) {
  var list = nodeNames.split( "|" ),
    safeFrag = document.createDocumentFragment();

  if ( safeFrag.createElement ) {
    while ( list.length ) {
      safeFrag.createElement(
        list.pop()
      );
    }
  }
  return safeFrag;
}

var nodeNames = "abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|" +
    "header|hgroup|mark|meter|nav|output|progress|section|summary|time|video",
  rinlinejQuery = / jQuery\d+="(?:null|\d+)"/g,
  rnoshimcache = new RegExp("<(?:" + nodeNames + ")[\\s/>]", "i"),
  rleadingWhitespace = /^\s+/,
  rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi,
  rtagName = /<([\w:]+)/,
  rtbody = /<tbody/i,
  rhtml = /<|&#?\w+;/,
  rnoInnerhtml = /<(?:script|style|link)/i,
  // checked="checked" or checked
  rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
  rscriptType = /^$|\/(?:java|ecma)script/i,
  rscriptTypeMasked = /^true\/(.*)/,
  rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g,

  // We have to close these tags to support XHTML (#13200)
  wrapMap = {
    option: [ 1, "<select multiple='multiple'>", "</select>" ],
    legend: [ 1, "<fieldset>", "</fieldset>" ],
    area: [ 1, "<map>", "</map>" ],
    param: [ 1, "<object>", "</object>" ],
    thead: [ 1, "<table>", "</table>" ],
    tr: [ 2, "<table><tbody>", "</tbody></table>" ],
    col: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ],
    td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],

    // IE6-8 can't serialize link, script, style, or any html5 (NoScope) tags,
    // unless wrapped in a div with non-breaking characters in front of it.
    _default: support.htmlSerialize ? [ 0, "", "" ] : [ 1, "X<div>", "</div>"  ]
  },
  safeFragment = createSafeFragment( document ),
  fragmentDiv = safeFragment.appendChild( document.createElement("div") );

wrapMap.optgroup = wrapMap.option;
wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
wrapMap.th = wrapMap.td;

function getAll( context, tag ) {
  var elems, elem,
    i = 0,
    found = typeof context.getElementsByTagName !== strundefined ? context.getElementsByTagName( tag || "*" ) :
      typeof context.querySelectorAll !== strundefined ? context.querySelectorAll( tag || "*" ) :
      undefined;

  if ( !found ) {
    for ( found = [], elems = context.childNodes || context; (elem = elems[i]) != null; i++ ) {
      if ( !tag || jQuery.nodeName( elem, tag ) ) {
        found.push( elem );
      } else {
        jQuery.merge( found, getAll( elem, tag ) );
      }
    }
  }

  return tag === undefined || tag && jQuery.nodeName( context, tag ) ?
    jQuery.merge( [ context ], found ) :
    found;
}

// Used in buildFragment, fixes the defaultChecked property
function fixDefaultChecked( elem ) {
  if ( rcheckableType.test( elem.type ) ) {
    elem.defaultChecked = elem.checked;
  }
}

// Support: IE<8
// Manipulating tables requires a tbody
function manipulationTarget( elem, content ) {
  return jQuery.nodeName( elem, "table" ) &&
    jQuery.nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ?

    elem.getElementsByTagName("tbody")[0] ||
      elem.appendChild( elem.ownerDocument.createElement("tbody") ) :
    elem;
}

// Replace/restore the type attribute of script elements for safe DOM manipulation
function disableScript( elem ) {
  elem.type = (jQuery.find.attr( elem, "type" ) !== null) + "/" + elem.type;
  return elem;
}
function restoreScript( elem ) {
  var match = rscriptTypeMasked.exec( elem.type );
  if ( match ) {
    elem.type = match[1];
  } else {
    elem.removeAttribute("type");
  }
  return elem;
}

// Mark scripts as having already been evaluated
function setGlobalEval( elems, refElements ) {
  var elem,
    i = 0;
  for ( ; (elem = elems[i]) != null; i++ ) {
    jQuery._data( elem, "globalEval", !refElements || jQuery._data( refElements[i], "globalEval" ) );
  }
}

function cloneCopyEvent( src, dest ) {

  if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) {
    return;
  }

  var type, i, l,
    oldData = jQuery._data( src ),
    curData = jQuery._data( dest, oldData ),
    events = oldData.events;

  if ( events ) {
    delete curData.handle;
    curData.events = {};

    for ( type in events ) {
      for ( i = 0, l = events[ type ].length; i < l; i++ ) {
        jQuery.event.add( dest, type, events[ type ][ i ] );
      }
    }
  }

  // make the cloned public data object a copy from the original
  if ( curData.data ) {
    curData.data = jQuery.extend( {}, curData.data );
  }
}

function fixCloneNodeIssues( src, dest ) {
  var nodeName, e, data;

  // We do not need to do anything for non-Elements
  if ( dest.nodeType !== 1 ) {
    return;
  }

  nodeName = dest.nodeName.toLowerCase();

  // IE6-8 copies events bound via attachEvent when using cloneNode.
  if ( !support.noCloneEvent && dest[ jQuery.expando ] ) {
    data = jQuery._data( dest );

    for ( e in data.events ) {
      jQuery.removeEvent( dest, e, data.handle );
    }

    // Event data gets referenced instead of copied if the expando gets copied too
    dest.removeAttribute( jQuery.expando );
  }

  // IE blanks contents when cloning scripts, and tries to evaluate newly-set text
  if ( nodeName === "script" && dest.text !== src.text ) {
    disableScript( dest ).text = src.text;
    restoreScript( dest );

  // IE6-10 improperly clones children of object elements using classid.
  // IE10 throws NoModificationAllowedError if parent is null, #12132.
  } else if ( nodeName === "object" ) {
    if ( dest.parentNode ) {
      dest.outerHTML = src.outerHTML;
    }

    // This path appears unavoidable for IE9. When cloning an object
    // element in IE9, the outerHTML strategy above is not sufficient.
    // If the src has innerHTML and the destination does not,
    // copy the src.innerHTML into the dest.innerHTML. #10324
    if ( support.html5Clone && ( src.innerHTML && !jQuery.trim(dest.innerHTML) ) ) {
      dest.innerHTML = src.innerHTML;
    }

  } else if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
    // IE6-8 fails to persist the checked state of a cloned checkbox
    // or radio button. Worse, IE6-7 fail to give the cloned element
    // a checked appearance if the defaultChecked value isn't also set

    dest.defaultChecked = dest.checked = src.checked;

    // IE6-7 get confused and end up setting the value of a cloned
    // checkbox/radio button to an empty string instead of "on"
    if ( dest.value !== src.value ) {
      dest.value = src.value;
    }

  // IE6-8 fails to return the selected option to the default selected
  // state when cloning options
  } else if ( nodeName === "option" ) {
    dest.defaultSelected = dest.selected = src.defaultSelected;

  // IE6-8 fails to set the defaultValue to the correct value when
  // cloning other types of input fields
  } else if ( nodeName === "input" || nodeName === "textarea" ) {
    dest.defaultValue = src.defaultValue;
  }
}

jQuery.extend({
  clone: function( elem, dataAndEvents, deepDataAndEvents ) {
    var destElements, node, clone, i, srcElements,
      inPage = jQuery.contains( elem.ownerDocument, elem );

    if ( support.html5Clone || jQuery.isXMLDoc(elem) || !rnoshimcache.test( "<" + elem.nodeName + ">" ) ) {
      clone = elem.cloneNode( true );

    // IE<=8 does not properly clone detached, unknown element nodes
    } else {
      fragmentDiv.innerHTML = elem.outerHTML;
      fragmentDiv.removeChild( clone = fragmentDiv.firstChild );
    }

    if ( (!support.noCloneEvent || !support.noCloneChecked) &&
        (elem.nodeType === 1 || elem.nodeType === 11) && !jQuery.isXMLDoc(elem) ) {

      // We eschew Sizzle here for performance reasons: http://jsperf.com/getall-vs-sizzle/2
      destElements = getAll( clone );
      srcElements = getAll( elem );

      // Fix all IE cloning issues
      for ( i = 0; (node = srcElements[i]) != null; ++i ) {
        // Ensure that the destination node is not null; Fixes #9587
        if ( destElements[i] ) {
          fixCloneNodeIssues( node, destElements[i] );
        }
      }
    }

    // Copy the events from the original to the clone
    if ( dataAndEvents ) {
      if ( deepDataAndEvents ) {
        srcElements = srcElements || getAll( elem );
        destElements = destElements || getAll( clone );

        for ( i = 0; (node = srcElements[i]) != null; i++ ) {
          cloneCopyEvent( node, destElements[i] );
        }
      } else {
        cloneCopyEvent( elem, clone );
      }
    }

    // Preserve script evaluation history
    destElements = getAll( clone, "script" );
    if ( destElements.length > 0 ) {
      setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
    }

    destElements = srcElements = node = null;

    // Return the cloned set
    return clone;
  },

  buildFragment: function( elems, context, scripts, selection ) {
    var j, elem, contains,
      tmp, tag, tbody, wrap,
      l = elems.length,

      // Ensure a safe fragment
      safe = createSafeFragment( context ),

      nodes = [],
      i = 0;

    for ( ; i < l; i++ ) {
      elem = elems[ i ];

      if ( elem || elem === 0 ) {

        // Add nodes directly
        if ( jQuery.type( elem ) === "object" ) {
          jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );

        // Convert non-html into a text node
        } else if ( !rhtml.test( elem ) ) {
          nodes.push( context.createTextNode( elem ) );

        // Convert html into DOM nodes
        } else {
          tmp = tmp || safe.appendChild( context.createElement("div") );

          // Deserialize a standard representation
          tag = (rtagName.exec( elem ) || [ "", "" ])[ 1 ].toLowerCase();
          wrap = wrapMap[ tag ] || wrapMap._default;

          tmp.innerHTML = wrap[1] + elem.replace( rxhtmlTag, "<$1></$2>" ) + wrap[2];

          // Descend through wrappers to the right content
          j = wrap[0];
          while ( j-- ) {
            tmp = tmp.lastChild;
          }

          // Manually add leading whitespace removed by IE
          if ( !support.leadingWhitespace && rleadingWhitespace.test( elem ) ) {
            nodes.push( context.createTextNode( rleadingWhitespace.exec( elem )[0] ) );
          }

          // Remove IE's autoinserted <tbody> from table fragments
          if ( !support.tbody ) {

            // String was a <table>, *may* have spurious <tbody>
            elem = tag === "table" && !rtbody.test( elem ) ?
              tmp.firstChild :

              // String was a bare <thead> or <tfoot>
              wrap[1] === "<table>" && !rtbody.test( elem ) ?
                tmp :
                0;

            j = elem && elem.childNodes.length;
            while ( j-- ) {
              if ( jQuery.nodeName( (tbody = elem.childNodes[j]), "tbody" ) && !tbody.childNodes.length ) {
                elem.removeChild( tbody );
              }
            }
          }

          jQuery.merge( nodes, tmp.childNodes );

          // Fix #12392 for WebKit and IE > 9
          tmp.textContent = "";

          // Fix #12392 for oldIE
          while ( tmp.firstChild ) {
            tmp.removeChild( tmp.firstChild );
          }

          // Remember the top-level container for proper cleanup
          tmp = safe.lastChild;
        }
      }
    }

    // Fix #11356: Clear elements from fragment
    if ( tmp ) {
      safe.removeChild( tmp );
    }

    // Reset defaultChecked for any radios and checkboxes
    // about to be appended to the DOM in IE 6/7 (#8060)
    if ( !support.appendChecked ) {
      jQuery.grep( getAll( nodes, "input" ), fixDefaultChecked );
    }

    i = 0;
    while ( (elem = nodes[ i++ ]) ) {

      // #4087 - If origin and destination elements are the same, and this is
      // that element, do not do anything
      if ( selection && jQuery.inArray( elem, selection ) !== -1 ) {
        continue;
      }

      contains = jQuery.contains( elem.ownerDocument, elem );

      // Append to fragment
      tmp = getAll( safe.appendChild( elem ), "script" );

      // Preserve script evaluation history
      if ( contains ) {
        setGlobalEval( tmp );
      }

      // Capture executables
      if ( scripts ) {
        j = 0;
        while ( (elem = tmp[ j++ ]) ) {
          if ( rscriptType.test( elem.type || "" ) ) {
            scripts.push( elem );
          }
        }
      }
    }

    tmp = null;

    return safe;
  },

  cleanData: function( elems, /* internal */ acceptData ) {
    var elem, type, id, data,
      i = 0,
      internalKey = jQuery.expando,
      cache = jQuery.cache,
      deleteExpando = support.deleteExpando,
      special = jQuery.event.special;

    for ( ; (elem = elems[i]) != null; i++ ) {
      if ( acceptData || jQuery.acceptData( elem ) ) {

        id = elem[ internalKey ];
        data = id && cache[ id ];

        if ( data ) {
          if ( data.events ) {
            for ( type in data.events ) {
              if ( special[ type ] ) {
                jQuery.event.remove( elem, type );

              // This is a shortcut to avoid jQuery.event.remove's overhead
              } else {
                jQuery.removeEvent( elem, type, data.handle );
              }
            }
          }

          // Remove cache only if it was not already removed by jQuery.event.remove
          if ( cache[ id ] ) {

            delete cache[ id ];

            // IE does not allow us to delete expando properties from nodes,
            // nor does it have a removeAttribute function on Document nodes;
            // we must handle all of these cases
            if ( deleteExpando ) {
              delete elem[ internalKey ];

            } else if ( typeof elem.removeAttribute !== strundefined ) {
              elem.removeAttribute( internalKey );

            } else {
              elem[ internalKey ] = null;
            }

            deletedIds.push( id );
          }
        }
      }
    }
  }
});

jQuery.fn.extend({
  text: function( value ) {
    return access( this, function( value ) {
      return value === undefined ?
        jQuery.text( this ) :
        this.empty().append( ( this[0] && this[0].ownerDocument || document ).createTextNode( value ) );
    }, null, value, arguments.length );
  },

  append: function() {
    return this.domManip( arguments, function( elem ) {
      if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
        var target = manipulationTarget( this, elem );
        target.appendChild( elem );
      }
    });
  },

  prepend: function() {
    return this.domManip( arguments, function( elem ) {
      if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
        var target = manipulationTarget( this, elem );
        target.insertBefore( elem, target.firstChild );
      }
    });
  },

  before: function() {
    return this.domManip( arguments, function( elem ) {
      if ( this.parentNode ) {
        this.parentNode.insertBefore( elem, this );
      }
    });
  },

  after: function() {
    return this.domManip( arguments, function( elem ) {
      if ( this.parentNode ) {
        this.parentNode.insertBefore( elem, this.nextSibling );
      }
    });
  },

  remove: function( selector, keepData /* Internal Use Only */ ) {
    var elem,
      elems = selector ? jQuery.filter( selector, this ) : this,
      i = 0;

    for ( ; (elem = elems[i]) != null; i++ ) {

      if ( !keepData && elem.nodeType === 1 ) {
        jQuery.cleanData( getAll( elem ) );
      }

      if ( elem.parentNode ) {
        if ( keepData && jQuery.contains( elem.ownerDocument, elem ) ) {
          setGlobalEval( getAll( elem, "script" ) );
        }
        elem.parentNode.removeChild( elem );
      }
    }

    return this;
  },

  empty: function() {
    var elem,
      i = 0;

    for ( ; (elem = this[i]) != null; i++ ) {
      // Remove element nodes and prevent memory leaks
      if ( elem.nodeType === 1 ) {
        jQuery.cleanData( getAll( elem, false ) );
      }

      // Remove any remaining nodes
      while ( elem.firstChild ) {
        elem.removeChild( elem.firstChild );
      }

      // If this is a select, ensure that it displays empty (#12336)
      // Support: IE<9
      if ( elem.options && jQuery.nodeName( elem, "select" ) ) {
        elem.options.length = 0;
      }
    }

    return this;
  },

  clone: function( dataAndEvents, deepDataAndEvents ) {
    dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
    deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;

    return this.map(function() {
      return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
    });
  },

  html: function( value ) {
    return access( this, function( value ) {
      var elem = this[ 0 ] || {},
        i = 0,
        l = this.length;

      if ( value === undefined ) {
        return elem.nodeType === 1 ?
          elem.innerHTML.replace( rinlinejQuery, "" ) :
          undefined;
      }

      // See if we can take a shortcut and just use innerHTML
      if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
        ( support.htmlSerialize || !rnoshimcache.test( value )  ) &&
        ( support.leadingWhitespace || !rleadingWhitespace.test( value ) ) &&
        !wrapMap[ (rtagName.exec( value ) || [ "", "" ])[ 1 ].toLowerCase() ] ) {

        value = value.replace( rxhtmlTag, "<$1></$2>" );

        try {
          for (; i < l; i++ ) {
            // Remove element nodes and prevent memory leaks
            elem = this[i] || {};
            if ( elem.nodeType === 1 ) {
              jQuery.cleanData( getAll( elem, false ) );
              elem.innerHTML = value;
            }
          }

          elem = 0;

        // If using innerHTML throws an exception, use the fallback method
        } catch(e) {}
      }

      if ( elem ) {
        this.empty().append( value );
      }
    }, null, value, arguments.length );
  },

  replaceWith: function() {
    var arg = arguments[ 0 ];

    // Make the changes, replacing each context element with the new content
    this.domManip( arguments, function( elem ) {
      arg = this.parentNode;

      jQuery.cleanData( getAll( this ) );

      if ( arg ) {
        arg.replaceChild( elem, this );
      }
    });

    // Force removal if there was no new content (e.g., from empty arguments)
    return arg && (arg.length || arg.nodeType) ? this : this.remove();
  },

  detach: function( selector ) {
    return this.remove( selector, true );
  },

  domManip: function( args, callback ) {

    // Flatten any nested arrays
    args = concat.apply( [], args );

    var first, node, hasScripts,
      scripts, doc, fragment,
      i = 0,
      l = this.length,
      set = this,
      iNoClone = l - 1,
      value = args[0],
      isFunction = jQuery.isFunction( value );

    // We can't cloneNode fragments that contain checked, in WebKit
    if ( isFunction ||
        ( l > 1 && typeof value === "string" &&
          !support.checkClone && rchecked.test( value ) ) ) {
      return this.each(function( index ) {
        var self = set.eq( index );
        if ( isFunction ) {
          args[0] = value.call( this, index, self.html() );
        }
        self.domManip( args, callback );
      });
    }

    if ( l ) {
      fragment = jQuery.buildFragment( args, this[ 0 ].ownerDocument, false, this );
      first = fragment.firstChild;

      if ( fragment.childNodes.length === 1 ) {
        fragment = first;
      }

      if ( first ) {
        scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
        hasScripts = scripts.length;

        // Use the original fragment for the last item instead of the first because it can end up
        // being emptied incorrectly in certain situations (#8070).
        for ( ; i < l; i++ ) {
          node = fragment;

          if ( i !== iNoClone ) {
            node = jQuery.clone( node, true, true );

            // Keep references to cloned scripts for later restoration
            if ( hasScripts ) {
              jQuery.merge( scripts, getAll( node, "script" ) );
            }
          }

          callback.call( this[i], node, i );
        }

        if ( hasScripts ) {
          doc = scripts[ scripts.length - 1 ].ownerDocument;

          // Reenable scripts
          jQuery.map( scripts, restoreScript );

          // Evaluate executable scripts on first document insertion
          for ( i = 0; i < hasScripts; i++ ) {
            node = scripts[ i ];
            if ( rscriptType.test( node.type || "" ) &&
              !jQuery._data( node, "globalEval" ) && jQuery.contains( doc, node ) ) {

              if ( node.src ) {
                // Optional AJAX dependency, but won't run scripts if not present
                if ( jQuery._evalUrl ) {
                  jQuery._evalUrl( node.src );
                }
              } else {
                jQuery.globalEval( ( node.text || node.textContent || node.innerHTML || "" ).replace( rcleanScript, "" ) );
              }
            }
          }
        }

        // Fix #11809: Avoid leaking memory
        fragment = first = null;
      }
    }

    return this;
  }
});

jQuery.each({
  appendTo: "append",
  prependTo: "prepend",
  insertBefore: "before",
  insertAfter: "after",
  replaceAll: "replaceWith"
}, function( name, original ) {
  jQuery.fn[ name ] = function( selector ) {
    var elems,
      i = 0,
      ret = [],
      insert = jQuery( selector ),
      last = insert.length - 1;

    for ( ; i <= last; i++ ) {
      elems = i === last ? this : this.clone(true);
      jQuery( insert[i] )[ original ]( elems );

      // Modern browsers can apply jQuery collections as arrays, but oldIE needs a .get()
      push.apply( ret, elems.get() );
    }

    return this.pushStack( ret );
  };
});


var iframe,
  elemdisplay = {};

/**
 * Retrieve the actual display of a element
 * @param {String} name nodeName of the element
 * @param {Object} doc Document object
 */
// Called only from within defaultDisplay
function actualDisplay( name, doc ) {
  var style,
    elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ),

    // getDefaultComputedStyle might be reliably used only on attached element
    display = window.getDefaultComputedStyle && ( style = window.getDefaultComputedStyle( elem[ 0 ] ) ) ?

      // Use of this method is a temporary fix (more like optmization) until something better comes along,
      // since it was removed from specification and supported only in FF
      style.display : jQuery.css( elem[ 0 ], "display" );

  // We don't have any data stored on the element,
  // so use "detach" method as fast way to get rid of the element
  elem.detach();

  return display;
}

/**
 * Try to determine the default display value of an element
 * @param {String} nodeName
 */
function defaultDisplay( nodeName ) {
  var doc = document,
    display = elemdisplay[ nodeName ];

  if ( !display ) {
    display = actualDisplay( nodeName, doc );

    // If the simple way fails, read from inside an iframe
    if ( display === "none" || !display ) {

      // Use the already-created iframe if possible
      iframe = (iframe || jQuery( "<iframe frameborder='0' width='0' height='0'/>" )).appendTo( doc.documentElement );

      // Always write a new HTML skeleton so Webkit and Firefox don't choke on reuse
      doc = ( iframe[ 0 ].contentWindow || iframe[ 0 ].contentDocument ).document;

      // Support: IE
      doc.write();
      doc.close();

      display = actualDisplay( nodeName, doc );
      iframe.detach();
    }

    // Store the correct default display
    elemdisplay[ nodeName ] = display;
  }

  return display;
}


(function() {
  var shrinkWrapBlocksVal;

  support.shrinkWrapBlocks = function() {
    if ( shrinkWrapBlocksVal != null ) {
      return shrinkWrapBlocksVal;
    }

    // Will be changed later if needed.
    shrinkWrapBlocksVal = false;

    // Minified: var b,c,d
    var div, body, container;

    body = document.getElementsByTagName( "body" )[ 0 ];
    if ( !body || !body.style ) {
      // Test fired too early or in an unsupported environment, exit.
      return;
    }

    // Setup
    div = document.createElement( "div" );
    container = document.createElement( "div" );
    container.style.cssText = "position:absolute;border:0;width:0;height:0;top:0;left:-9999px";
    body.appendChild( container ).appendChild( div );

    // Support: IE6
    // Check if elements with layout shrink-wrap their children
    if ( typeof div.style.zoom !== strundefined ) {
      // Reset CSS: box-sizing; display; margin; border
      div.style.cssText =
        // Support: Firefox<29, Android 2.3
        // Vendor-prefix box-sizing
        "-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
        "box-sizing:content-box;display:block;margin:0;border:0;" +
        "padding:1px;width:1px;zoom:1";
      div.appendChild( document.createElement( "div" ) ).style.width = "5px";
      shrinkWrapBlocksVal = div.offsetWidth !== 3;
    }

    body.removeChild( container );

    return shrinkWrapBlocksVal;
  };

})();
var rmargin = (/^margin/);

var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );



var getStyles, curCSS,
  rposition = /^(top|right|bottom|left)$/;

if ( window.getComputedStyle ) {
  getStyles = function( elem ) {
    return elem.ownerDocument.defaultView.getComputedStyle( elem, null );
  };

  curCSS = function( elem, name, computed ) {
    var width, minWidth, maxWidth, ret,
      style = elem.style;

    computed = computed || getStyles( elem );

    // getPropertyValue is only needed for .css('filter') in IE9, see #12537
    ret = computed ? computed.getPropertyValue( name ) || computed[ name ] : undefined;

    if ( computed ) {

      if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
        ret = jQuery.style( elem, name );
      }

      // A tribute to the "awesome hack by Dean Edwards"
      // Chrome < 17 and Safari 5.0 uses "computed value" instead of "used value" for margin-right
      // Safari 5.1.7 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels
      // this is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values
      if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) {

        // Remember the original values
        width = style.width;
        minWidth = style.minWidth;
        maxWidth = style.maxWidth;

        // Put in the new values to get a computed value out
        style.minWidth = style.maxWidth = style.width = ret;
        ret = computed.width;

        // Revert the changed values
        style.width = width;
        style.minWidth = minWidth;
        style.maxWidth = maxWidth;
      }
    }

    // Support: IE
    // IE returns zIndex value as an integer.
    return ret === undefined ?
      ret :
      ret + "";
  };
} else if ( document.documentElement.currentStyle ) {
  getStyles = function( elem ) {
    return elem.currentStyle;
  };

  curCSS = function( elem, name, computed ) {
    var left, rs, rsLeft, ret,
      style = elem.style;

    computed = computed || getStyles( elem );
    ret = computed ? computed[ name ] : undefined;

    // Avoid setting ret to empty string here
    // so we don't default to auto
    if ( ret == null && style && style[ name ] ) {
      ret = style[ name ];
    }

    // From the awesome hack by Dean Edwards
    // http://erik.eae.net/archives/2007/07/27/18.54.15/#comment-102291

    // If we're not dealing with a regular pixel number
    // but a number that has a weird ending, we need to convert it to pixels
    // but not position css attributes, as those are proportional to the parent element instead
    // and we can't measure the parent instead because it might trigger a "stacking dolls" problem
    if ( rnumnonpx.test( ret ) && !rposition.test( name ) ) {

      // Remember the original values
      left = style.left;
      rs = elem.runtimeStyle;
      rsLeft = rs && rs.left;

      // Put in the new values to get a computed value out
      if ( rsLeft ) {
        rs.left = elem.currentStyle.left;
      }
      style.left = name === "fontSize" ? "1em" : ret;
      ret = style.pixelLeft + "px";

      // Revert the changed values
      style.left = left;
      if ( rsLeft ) {
        rs.left = rsLeft;
      }
    }

    // Support: IE
    // IE returns zIndex value as an integer.
    return ret === undefined ?
      ret :
      ret + "" || "auto";
  };
}




function addGetHookIf( conditionFn, hookFn ) {
  // Define the hook, we'll check on the first run if it's really needed.
  return {
    get: function() {
      var condition = conditionFn();

      if ( condition == null ) {
        // The test was not ready at this point; screw the hook this time
        // but check again when needed next time.
        return;
      }

      if ( condition ) {
        // Hook not needed (or it's not possible to use it due to missing dependency),
        // remove it.
        // Since there are no other hooks for marginRight, remove the whole object.
        delete this.get;
        return;
      }

      // Hook needed; redefine it so that the support test is not executed again.

      return (this.get = hookFn).apply( this, arguments );
    }
  };
}


(function() {
  // Minified: var b,c,d,e,f,g, h,i
  var div, style, a, pixelPositionVal, boxSizingReliableVal,
    reliableHiddenOffsetsVal, reliableMarginRightVal;

  // Setup
  div = document.createElement( "div" );
  div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
  a = div.getElementsByTagName( "a" )[ 0 ];
  style = a && a.style;

  // Finish early in limited (non-browser) environments
  if ( !style ) {
    return;
  }

  style.cssText = "float:left;opacity:.5";

  // Support: IE<9
  // Make sure that element opacity exists (as opposed to filter)
  support.opacity = style.opacity === "0.5";

  // Verify style float existence
  // (IE uses styleFloat instead of cssFloat)
  support.cssFloat = !!style.cssFloat;

  div.style.backgroundClip = "content-box";
  div.cloneNode( true ).style.backgroundClip = "";
  support.clearCloneStyle = div.style.backgroundClip === "content-box";

  // Support: Firefox<29, Android 2.3
  // Vendor-prefix box-sizing
  support.boxSizing = style.boxSizing === "" || style.MozBoxSizing === "" ||
    style.WebkitBoxSizing === "";

  jQuery.extend(support, {
    reliableHiddenOffsets: function() {
      if ( reliableHiddenOffsetsVal == null ) {
        computeStyleTests();
      }
      return reliableHiddenOffsetsVal;
    },

    boxSizingReliable: function() {
      if ( boxSizingReliableVal == null ) {
        computeStyleTests();
      }
      return boxSizingReliableVal;
    },

    pixelPosition: function() {
      if ( pixelPositionVal == null ) {
        computeStyleTests();
      }
      return pixelPositionVal;
    },

    // Support: Android 2.3
    reliableMarginRight: function() {
      if ( reliableMarginRightVal == null ) {
        computeStyleTests();
      }
      return reliableMarginRightVal;
    }
  });

  function computeStyleTests() {
    // Minified: var b,c,d,j
    var div, body, container, contents;

    body = document.getElementsByTagName( "body" )[ 0 ];
    if ( !body || !body.style ) {
      // Test fired too early or in an unsupported environment, exit.
      return;
    }

    // Setup
    div = document.createElement( "div" );
    container = document.createElement( "div" );
    container.style.cssText = "position:absolute;border:0;width:0;height:0;top:0;left:-9999px";
    body.appendChild( container ).appendChild( div );

    div.style.cssText =
      // Support: Firefox<29, Android 2.3
      // Vendor-prefix box-sizing
      "-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" +
      "box-sizing:border-box;display:block;margin-top:1%;top:1%;" +
      "border:1px;padding:1px;width:4px;position:absolute";

    // Support: IE<9
    // Assume reasonable values in the absence of getComputedStyle
    pixelPositionVal = boxSizingReliableVal = false;
    reliableMarginRightVal = true;

    // Check for getComputedStyle so that this code is not run in IE<9.
    if ( window.getComputedStyle ) {
      pixelPositionVal = ( window.getComputedStyle( div, null ) || {} ).top !== "1%";
      boxSizingReliableVal =
        ( window.getComputedStyle( div, null ) || { width: "4px" } ).width === "4px";

      // Support: Android 2.3
      // Div with explicit width and no margin-right incorrectly
      // gets computed margin-right based on width of container (#3333)
      // WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
      contents = div.appendChild( document.createElement( "div" ) );

      // Reset CSS: box-sizing; display; margin; border; padding
      contents.style.cssText = div.style.cssText =
        // Support: Firefox<29, Android 2.3
        // Vendor-prefix box-sizing
        "-webkit-box-sizing:content-box;-moz-box-sizing:content-box;" +
        "box-sizing:content-box;display:block;margin:0;border:0;padding:0";
      contents.style.marginRight = contents.style.width = "0";
      div.style.width = "1px";

      reliableMarginRightVal =
        !parseFloat( ( window.getComputedStyle( contents, null ) || {} ).marginRight );
    }

    // Support: IE8
    // Check if table cells still have offsetWidth/Height when they are set
    // to display:none and there are still other visible table cells in a
    // table row; if so, offsetWidth/Height are not reliable for use when
    // determining if an element has been hidden directly using
    // display:none (it is still safe to use offsets if a parent element is
    // hidden; don safety goggles and see bug #4512 for more information).
    div.innerHTML = "<table><tr><td></td><td>t</td></tr></table>";
    contents = div.getElementsByTagName( "td" );
    contents[ 0 ].style.cssText = "margin:0;border:0;padding:0;display:none";
    reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
    if ( reliableHiddenOffsetsVal ) {
      contents[ 0 ].style.display = "";
      contents[ 1 ].style.display = "none";
      reliableHiddenOffsetsVal = contents[ 0 ].offsetHeight === 0;
    }

    body.removeChild( container );
  }

})();


// A method for quickly swapping in/out CSS properties to get correct calculations.
jQuery.swap = function( elem, options, callback, args ) {
  var ret, name,
    old = {};

  // Remember the old values, and insert the new ones
  for ( name in options ) {
    old[ name ] = elem.style[ name ];
    elem.style[ name ] = options[ name ];
  }

  ret = callback.apply( elem, args || [] );

  // Revert the old values
  for ( name in options ) {
    elem.style[ name ] = old[ name ];
  }

  return ret;
};


var
    ralpha = /alpha\([^)]*\)/i,
  ropacity = /opacity\s*=\s*([^)]*)/,

  // swappable if display is none or starts with table except "table", "table-cell", or "table-caption"
  // see here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
  rdisplayswap = /^(none|table(?!-c[ea]).+)/,
  rnumsplit = new RegExp( "^(" + pnum + ")(.*)$", "i" ),
  rrelNum = new RegExp( "^([+-])=(" + pnum + ")", "i" ),

  cssShow = { position: "absolute", visibility: "hidden", display: "block" },
  cssNormalTransform = {
    letterSpacing: "0",
    fontWeight: "400"
  },

  cssPrefixes = [ "Webkit", "O", "Moz", "ms" ];


// return a css property mapped to a potentially vendor prefixed property
function vendorPropName( style, name ) {

  // shortcut for names that are not vendor prefixed
  if ( name in style ) {
    return name;
  }

  // check for vendor prefixed names
  var capName = name.charAt(0).toUpperCase() + name.slice(1),
    origName = name,
    i = cssPrefixes.length;

  while ( i-- ) {
    name = cssPrefixes[ i ] + capName;
    if ( name in style ) {
      return name;
    }
  }

  return origName;
}

function showHide( elements, show ) {
  var display, elem, hidden,
    values = [],
    index = 0,
    length = elements.length;

  for ( ; index < length; index++ ) {
    elem = elements[ index ];
    if ( !elem.style ) {
      continue;
    }

    values[ index ] = jQuery._data( elem, "olddisplay" );
    display = elem.style.display;
    if ( show ) {
      // Reset the inline display of this element to learn if it is
      // being hidden by cascaded rules or not
      if ( !values[ index ] && display === "none" ) {
        elem.style.display = "";
      }

      // Set elements which have been overridden with display: none
      // in a stylesheet to whatever the default browser style is
      // for such an element
      if ( elem.style.display === "" && isHidden( elem ) ) {
        values[ index ] = jQuery._data( elem, "olddisplay", defaultDisplay(elem.nodeName) );
      }
    } else {
      hidden = isHidden( elem );

      if ( display && display !== "none" || !hidden ) {
        jQuery._data( elem, "olddisplay", hidden ? display : jQuery.css( elem, "display" ) );
      }
    }
  }

  // Set the display of most of the elements in a second loop
  // to avoid the constant reflow
  for ( index = 0; index < length; index++ ) {
    elem = elements[ index ];
    if ( !elem.style ) {
      continue;
    }
    if ( !show || elem.style.display === "none" || elem.style.display === "" ) {
      elem.style.display = show ? values[ index ] || "" : "none";
    }
  }

  return elements;
}

function setPositiveNumber( elem, value, subtract ) {
  var matches = rnumsplit.exec( value );
  return matches ?
    // Guard against undefined "subtract", e.g., when used as in cssHooks
    Math.max( 0, matches[ 1 ] - ( subtract || 0 ) ) + ( matches[ 2 ] || "px" ) :
    value;
}

function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
  var i = extra === ( isBorderBox ? "border" : "content" ) ?
    // If we already have the right measurement, avoid augmentation
    4 :
    // Otherwise initialize for horizontal or vertical properties
    name === "width" ? 1 : 0,

    val = 0;

  for ( ; i < 4; i += 2 ) {
    // both box models exclude margin, so add it if we want it
    if ( extra === "margin" ) {
      val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
    }

    if ( isBorderBox ) {
      // border-box includes padding, so remove it if we want content
      if ( extra === "content" ) {
        val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
      }

      // at this point, extra isn't border nor margin, so remove border
      if ( extra !== "margin" ) {
        val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
      }
    } else {
      // at this point, extra isn't content, so add padding
      val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );

      // at this point, extra isn't content nor padding, so add border
      if ( extra !== "padding" ) {
        val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
      }
    }
  }

  return val;
}

function getWidthOrHeight( elem, name, extra ) {

  // Start with offset property, which is equivalent to the border-box value
  var valueIsBorderBox = true,
    val = name === "width" ? elem.offsetWidth : elem.offsetHeight,
    styles = getStyles( elem ),
    isBorderBox = support.boxSizing && jQuery.css( elem, "boxSizing", false, styles ) === "border-box";

  // some non-html elements return undefined for offsetWidth, so check for null/undefined
  // svg - https://bugzilla.mozilla.org/show_bug.cgi?id=649285
  // MathML - https://bugzilla.mozilla.org/show_bug.cgi?id=491668
  if ( val <= 0 || val == null ) {
    // Fall back to computed then uncomputed css if necessary
    val = curCSS( elem, name, styles );
    if ( val < 0 || val == null ) {
      val = elem.style[ name ];
    }

    // Computed unit is not pixels. Stop here and return.
    if ( rnumnonpx.test(val) ) {
      return val;
    }

    // we need the check for style in case a browser which returns unreliable values
    // for getComputedStyle silently falls back to the reliable elem.style
    valueIsBorderBox = isBorderBox && ( support.boxSizingReliable() || val === elem.style[ name ] );

    // Normalize "", auto, and prepare for extra
    val = parseFloat( val ) || 0;
  }

  // use the active box-sizing model to add/subtract irrelevant styles
  return ( val +
    augmentWidthOrHeight(
      elem,
      name,
      extra || ( isBorderBox ? "border" : "content" ),
      valueIsBorderBox,
      styles
    )
  ) + "px";
}

jQuery.extend({
  // Add in style property hooks for overriding the default
  // behavior of getting and setting a style property
  cssHooks: {
    opacity: {
      get: function( elem, computed ) {
        if ( computed ) {
          // We should always get a number back from opacity
          var ret = curCSS( elem, "opacity" );
          return ret === "" ? "1" : ret;
        }
      }
    }
  },

  // Don't automatically add "px" to these possibly-unitless properties
  cssNumber: {
    "columnCount": true,
    "fillOpacity": true,
    "flexGrow": true,
    "flexShrink": true,
    "fontWeight": true,
    "lineHeight": true,
    "opacity": true,
    "order": true,
    "orphans": true,
    "widows": true,
    "zIndex": true,
    "zoom": true
  },

  // Add in properties whose names you wish to fix before
  // setting or getting the value
  cssProps: {
    // normalize float css property
    "float": support.cssFloat ? "cssFloat" : "styleFloat"
  },

  // Get and set the style property on a DOM Node
  style: function( elem, name, value, extra ) {
    // Don't set styles on text and comment nodes
    if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
      return;
    }

    // Make sure that we're working with the right name
    var ret, type, hooks,
      origName = jQuery.camelCase( name ),
      style = elem.style;

    name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( style, origName ) );

    // gets hook for the prefixed version
    // followed by the unprefixed version
    hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

    // Check if we're setting a value
    if ( value !== undefined ) {
      type = typeof value;

      // convert relative number strings (+= or -=) to relative numbers. #7345
      if ( type === "string" && (ret = rrelNum.exec( value )) ) {
        value = ( ret[1] + 1 ) * ret[2] + parseFloat( jQuery.css( elem, name ) );
        // Fixes bug #9237
        type = "number";
      }

      // Make sure that null and NaN values aren't set. See: #7116
      if ( value == null || value !== value ) {
        return;
      }

      // If a number was passed in, add 'px' to the (except for certain CSS properties)
      if ( type === "number" && !jQuery.cssNumber[ origName ] ) {
        value += "px";
      }

      // Fixes #8908, it can be done more correctly by specifing setters in cssHooks,
      // but it would mean to define eight (for every problematic property) identical functions
      if ( !support.clearCloneStyle && value === "" && name.indexOf("background") === 0 ) {
        style[ name ] = "inherit";
      }

      // If a hook was provided, use that value, otherwise just set the specified value
      if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value, extra )) !== undefined ) {

        // Support: IE
        // Swallow errors from 'invalid' CSS values (#5509)
        try {
          style[ name ] = value;
        } catch(e) {}
      }

    } else {
      // If a hook was provided get the non-computed value from there
      if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) {
        return ret;
      }

      // Otherwise just get the value from the style object
      return style[ name ];
    }
  },

  css: function( elem, name, extra, styles ) {
    var num, val, hooks,
      origName = jQuery.camelCase( name );

    // Make sure that we're working with the right name
    name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( elem.style, origName ) );

    // gets hook for the prefixed version
    // followed by the unprefixed version
    hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];

    // If a hook was provided get the computed value from there
    if ( hooks && "get" in hooks ) {
      val = hooks.get( elem, true, extra );
    }

    // Otherwise, if a way to get the computed value exists, use that
    if ( val === undefined ) {
      val = curCSS( elem, name, styles );
    }

    //convert "normal" to computed value
    if ( val === "normal" && name in cssNormalTransform ) {
      val = cssNormalTransform[ name ];
    }

    // Return, converting to number if forced or a qualifier was provided and val looks numeric
    if ( extra === "" || extra ) {
      num = parseFloat( val );
      return extra === true || jQuery.isNumeric( num ) ? num || 0 : val;
    }
    return val;
  }
});

jQuery.each([ "height", "width" ], function( i, name ) {
  jQuery.cssHooks[ name ] = {
    get: function( elem, computed, extra ) {
      if ( computed ) {
        // certain elements can have dimension info if we invisibly show them
        // however, it must have a current display style that would benefit from this
        return rdisplayswap.test( jQuery.css( elem, "display" ) ) && elem.offsetWidth === 0 ?
          jQuery.swap( elem, cssShow, function() {
            return getWidthOrHeight( elem, name, extra );
          }) :
          getWidthOrHeight( elem, name, extra );
      }
    },

    set: function( elem, value, extra ) {
      var styles = extra && getStyles( elem );
      return setPositiveNumber( elem, value, extra ?
        augmentWidthOrHeight(
          elem,
          name,
          extra,
          support.boxSizing && jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
          styles
        ) : 0
      );
    }
  };
});

if ( !support.opacity ) {
  jQuery.cssHooks.opacity = {
    get: function( elem, computed ) {
      // IE uses filters for opacity
      return ropacity.test( (computed && elem.currentStyle ? elem.currentStyle.filter : elem.style.filter) || "" ) ?
        ( 0.01 * parseFloat( RegExp.$1 ) ) + "" :
        computed ? "1" : "";
    },

    set: function( elem, value ) {
      var style = elem.style,
        currentStyle = elem.currentStyle,
        opacity = jQuery.isNumeric( value ) ? "alpha(opacity=" + value * 100 + ")" : "",
        filter = currentStyle && currentStyle.filter || style.filter || "";

      // IE has trouble with opacity if it does not have layout
      // Force it by setting the zoom level
      style.zoom = 1;

      // if setting opacity to 1, and no other filters exist - attempt to remove filter attribute #6652
      // if value === "", then remove inline opacity #12685
      if ( ( value >= 1 || value === "" ) &&
          jQuery.trim( filter.replace( ralpha, "" ) ) === "" &&
          style.removeAttribute ) {

        // Setting style.filter to null, "" & " " still leave "filter:" in the cssText
        // if "filter:" is present at all, clearType is disabled, we want to avoid this
        // style.removeAttribute is IE Only, but so apparently is this code path...
        style.removeAttribute( "filter" );

        // if there is no filter style applied in a css rule or unset inline opacity, we are done
        if ( value === "" || currentStyle && !currentStyle.filter ) {
          return;
        }
      }

      // otherwise, set new filter values
      style.filter = ralpha.test( filter ) ?
        filter.replace( ralpha, opacity ) :
        filter + " " + opacity;
    }
  };
}

jQuery.cssHooks.marginRight = addGetHookIf( support.reliableMarginRight,
  function( elem, computed ) {
    if ( computed ) {
      // WebKit Bug 13343 - getComputedStyle returns wrong value for margin-right
      // Work around by temporarily setting element display to inline-block
      return jQuery.swap( elem, { "display": "inline-block" },
        curCSS, [ elem, "marginRight" ] );
    }
  }
);

// These hooks are used by animate to expand properties
jQuery.each({
  margin: "",
  padding: "",
  border: "Width"
}, function( prefix, suffix ) {
  jQuery.cssHooks[ prefix + suffix ] = {
    expand: function( value ) {
      var i = 0,
        expanded = {},

        // assumes a single number if not a string
        parts = typeof value === "string" ? value.split(" ") : [ value ];

      for ( ; i < 4; i++ ) {
        expanded[ prefix + cssExpand[ i ] + suffix ] =
          parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
      }

      return expanded;
    }
  };

  if ( !rmargin.test( prefix ) ) {
    jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
  }
});

jQuery.fn.extend({
  css: function( name, value ) {
    return access( this, function( elem, name, value ) {
      var styles, len,
        map = {},
        i = 0;

      if ( jQuery.isArray( name ) ) {
        styles = getStyles( elem );
        len = name.length;

        for ( ; i < len; i++ ) {
          map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
        }

        return map;
      }

      return value !== undefined ?
        jQuery.style( elem, name, value ) :
        jQuery.css( elem, name );
    }, name, value, arguments.length > 1 );
  },
  show: function() {
    return showHide( this, true );
  },
  hide: function() {
    return showHide( this );
  },
  toggle: function( state ) {
    if ( typeof state === "boolean" ) {
      return state ? this.show() : this.hide();
    }

    return this.each(function() {
      if ( isHidden( this ) ) {
        jQuery( this ).show();
      } else {
        jQuery( this ).hide();
      }
    });
  }
});


function Tween( elem, options, prop, end, easing ) {
  return new Tween.prototype.init( elem, options, prop, end, easing );
}
jQuery.Tween = Tween;

Tween.prototype = {
  constructor: Tween,
  init: function( elem, options, prop, end, easing, unit ) {
    this.elem = elem;
    this.prop = prop;
    this.easing = easing || "swing";
    this.options = options;
    this.start = this.now = this.cur();
    this.end = end;
    this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
  },
  cur: function() {
    var hooks = Tween.propHooks[ this.prop ];

    return hooks && hooks.get ?
      hooks.get( this ) :
      Tween.propHooks._default.get( this );
  },
  run: function( percent ) {
    var eased,
      hooks = Tween.propHooks[ this.prop ];

    if ( this.options.duration ) {
      this.pos = eased = jQuery.easing[ this.easing ](
        percent, this.options.duration * percent, 0, 1, this.options.duration
      );
    } else {
      this.pos = eased = percent;
    }
    this.now = ( this.end - this.start ) * eased + this.start;

    if ( this.options.step ) {
      this.options.step.call( this.elem, this.now, this );
    }

    if ( hooks && hooks.set ) {
      hooks.set( this );
    } else {
      Tween.propHooks._default.set( this );
    }
    return this;
  }
};

Tween.prototype.init.prototype = Tween.prototype;

Tween.propHooks = {
  _default: {
    get: function( tween ) {
      var result;

      if ( tween.elem[ tween.prop ] != null &&
        (!tween.elem.style || tween.elem.style[ tween.prop ] == null) ) {
        return tween.elem[ tween.prop ];
      }

      // passing an empty string as a 3rd parameter to .css will automatically
      // attempt a parseFloat and fallback to a string if the parse fails
      // so, simple values such as "10px" are parsed to Float.
      // complex values such as "rotate(1rad)" are returned as is.
      result = jQuery.css( tween.elem, tween.prop, "" );
      // Empty strings, null, undefined and "auto" are converted to 0.
      return !result || result === "auto" ? 0 : result;
    },
    set: function( tween ) {
      // use step hook for back compat - use cssHook if its there - use .style if its
      // available and use plain properties where available
      if ( jQuery.fx.step[ tween.prop ] ) {
        jQuery.fx.step[ tween.prop ]( tween );
      } else if ( tween.elem.style && ( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null || jQuery.cssHooks[ tween.prop ] ) ) {
        jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
      } else {
        tween.elem[ tween.prop ] = tween.now;
      }
    }
  }
};

// Support: IE <=9
// Panic based approach to setting things on disconnected nodes

Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
  set: function( tween ) {
    if ( tween.elem.nodeType && tween.elem.parentNode ) {
      tween.elem[ tween.prop ] = tween.now;
    }
  }
};

jQuery.easing = {
  linear: function( p ) {
    return p;
  },
  swing: function( p ) {
    return 0.5 - Math.cos( p * Math.PI ) / 2;
  }
};

jQuery.fx = Tween.prototype.init;

// Back Compat <1.8 extension point
jQuery.fx.step = {};




var
  fxNow, timerId,
  rfxtypes = /^(?:toggle|show|hide)$/,
  rfxnum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ),
  rrun = /queueHooks$/,
  animationPrefilters = [ defaultPrefilter ],
  tweeners = {
    "*": [ function( prop, value ) {
      var tween = this.createTween( prop, value ),
        target = tween.cur(),
        parts = rfxnum.exec( value ),
        unit = parts && parts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),

        // Starting value computation is required for potential unit mismatches
        start = ( jQuery.cssNumber[ prop ] || unit !== "px" && +target ) &&
          rfxnum.exec( jQuery.css( tween.elem, prop ) ),
        scale = 1,
        maxIterations = 20;

      if ( start && start[ 3 ] !== unit ) {
        // Trust units reported by jQuery.css
        unit = unit || start[ 3 ];

        // Make sure we update the tween properties later on
        parts = parts || [];

        // Iteratively approximate from a nonzero starting point
        start = +target || 1;

        do {
          // If previous iteration zeroed out, double until we get *something*
          // Use a string for doubling factor so we don't accidentally see scale as unchanged below
          scale = scale || ".5";

          // Adjust and apply
          start = start / scale;
          jQuery.style( tween.elem, prop, start + unit );

        // Update scale, tolerating zero or NaN from tween.cur()
        // And breaking the loop if scale is unchanged or perfect, or if we've just had enough
        } while ( scale !== (scale = tween.cur() / target) && scale !== 1 && --maxIterations );
      }

      // Update tween properties
      if ( parts ) {
        start = tween.start = +start || +target || 0;
        tween.unit = unit;
        // If a +=/-= token was provided, we're doing a relative animation
        tween.end = parts[ 1 ] ?
          start + ( parts[ 1 ] + 1 ) * parts[ 2 ] :
          +parts[ 2 ];
      }

      return tween;
    } ]
  };

// Animations created synchronously will run synchronously
function createFxNow() {
  setTimeout(function() {
    fxNow = undefined;
  });
  return ( fxNow = jQuery.now() );
}

// Generate parameters to create a standard animation
function genFx( type, includeWidth ) {
  var which,
    attrs = { height: type },
    i = 0;

  // if we include width, step value is 1 to do all cssExpand values,
  // if we don't include width, step value is 2 to skip over Left and Right
  includeWidth = includeWidth ? 1 : 0;
  for ( ; i < 4 ; i += 2 - includeWidth ) {
    which = cssExpand[ i ];
    attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
  }

  if ( includeWidth ) {
    attrs.opacity = attrs.width = type;
  }

  return attrs;
}

function createTween( value, prop, animation ) {
  var tween,
    collection = ( tweeners[ prop ] || [] ).concat( tweeners[ "*" ] ),
    index = 0,
    length = collection.length;
  for ( ; index < length; index++ ) {
    if ( (tween = collection[ index ].call( animation, prop, value )) ) {

      // we're done with this property
      return tween;
    }
  }
}

function defaultPrefilter( elem, props, opts ) {
  /* jshint validthis: true */
  var prop, value, toggle, tween, hooks, oldfire, display, checkDisplay,
    anim = this,
    orig = {},
    style = elem.style,
    hidden = elem.nodeType && isHidden( elem ),
    dataShow = jQuery._data( elem, "fxshow" );

  // handle queue: false promises
  if ( !opts.queue ) {
    hooks = jQuery._queueHooks( elem, "fx" );
    if ( hooks.unqueued == null ) {
      hooks.unqueued = 0;
      oldfire = hooks.empty.fire;
      hooks.empty.fire = function() {
        if ( !hooks.unqueued ) {
          oldfire();
        }
      };
    }
    hooks.unqueued++;

    anim.always(function() {
      // doing this makes sure that the complete handler will be called
      // before this completes
      anim.always(function() {
        hooks.unqueued--;
        if ( !jQuery.queue( elem, "fx" ).length ) {
          hooks.empty.fire();
        }
      });
    });
  }

  // height/width overflow pass
  if ( elem.nodeType === 1 && ( "height" in props || "width" in props ) ) {
    // Make sure that nothing sneaks out
    // Record all 3 overflow attributes because IE does not
    // change the overflow attribute when overflowX and
    // overflowY are set to the same value
    opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];

    // Set display property to inline-block for height/width
    // animations on inline elements that are having width/height animated
    display = jQuery.css( elem, "display" );

    // Test default display if display is currently "none"
    checkDisplay = display === "none" ?
      jQuery._data( elem, "olddisplay" ) || defaultDisplay( elem.nodeName ) : display;

    if ( checkDisplay === "inline" && jQuery.css( elem, "float" ) === "none" ) {

      // inline-level elements accept inline-block;
      // block-level elements need to be inline with layout
      if ( !support.inlineBlockNeedsLayout || defaultDisplay( elem.nodeName ) === "inline" ) {
        style.display = "inline-block";
      } else {
        style.zoom = 1;
      }
    }
  }

  if ( opts.overflow ) {
    style.overflow = "hidden";
    if ( !support.shrinkWrapBlocks() ) {
      anim.always(function() {
        style.overflow = opts.overflow[ 0 ];
        style.overflowX = opts.overflow[ 1 ];
        style.overflowY = opts.overflow[ 2 ];
      });
    }
  }

  // show/hide pass
  for ( prop in props ) {
    value = props[ prop ];
    if ( rfxtypes.exec( value ) ) {
      delete props[ prop ];
      toggle = toggle || value === "toggle";
      if ( value === ( hidden ? "hide" : "show" ) ) {

        // If there is dataShow left over from a stopped hide or show and we are going to proceed with show, we should pretend to be hidden
        if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
          hidden = true;
        } else {
          continue;
        }
      }
      orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );

    // Any non-fx value stops us from restoring the original display value
    } else {
      display = undefined;
    }
  }

  if ( !jQuery.isEmptyObject( orig ) ) {
    if ( dataShow ) {
      if ( "hidden" in dataShow ) {
        hidden = dataShow.hidden;
      }
    } else {
      dataShow = jQuery._data( elem, "fxshow", {} );
    }

    // store state if its toggle - enables .stop().toggle() to "reverse"
    if ( toggle ) {
      dataShow.hidden = !hidden;
    }
    if ( hidden ) {
      jQuery( elem ).show();
    } else {
      anim.done(function() {
        jQuery( elem ).hide();
      });
    }
    anim.done(function() {
      var prop;
      jQuery._removeData( elem, "fxshow" );
      for ( prop in orig ) {
        jQuery.style( elem, prop, orig[ prop ] );
      }
    });
    for ( prop in orig ) {
      tween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );

      if ( !( prop in dataShow ) ) {
        dataShow[ prop ] = tween.start;
        if ( hidden ) {
          tween.end = tween.start;
          tween.start = prop === "width" || prop === "height" ? 1 : 0;
        }
      }
    }

  // If this is a noop like .hide().hide(), restore an overwritten display value
  } else if ( (display === "none" ? defaultDisplay( elem.nodeName ) : display) === "inline" ) {
    style.display = display;
  }
}

function propFilter( props, specialEasing ) {
  var index, name, easing, value, hooks;

  // camelCase, specialEasing and expand cssHook pass
  for ( index in props ) {
    name = jQuery.camelCase( index );
    easing = specialEasing[ name ];
    value = props[ index ];
    if ( jQuery.isArray( value ) ) {
      easing = value[ 1 ];
      value = props[ index ] = value[ 0 ];
    }

    if ( index !== name ) {
      props[ name ] = value;
      delete props[ index ];
    }

    hooks = jQuery.cssHooks[ name ];
    if ( hooks && "expand" in hooks ) {
      value = hooks.expand( value );
      delete props[ name ];

      // not quite $.extend, this wont overwrite keys already present.
      // also - reusing 'index' from above because we have the correct "name"
      for ( index in value ) {
        if ( !( index in props ) ) {
          props[ index ] = value[ index ];
          specialEasing[ index ] = easing;
        }
      }
    } else {
      specialEasing[ name ] = easing;
    }
  }
}

function Animation( elem, properties, options ) {
  var result,
    stopped,
    index = 0,
    length = animationPrefilters.length,
    deferred = jQuery.Deferred().always( function() {
      // don't match elem in the :animated selector
      delete tick.elem;
    }),
    tick = function() {
      if ( stopped ) {
        return false;
      }
      var currentTime = fxNow || createFxNow(),
        remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
        // archaic crash bug won't allow us to use 1 - ( 0.5 || 0 ) (#12497)
        temp = remaining / animation.duration || 0,
        percent = 1 - temp,
        index = 0,
        length = animation.tweens.length;

      for ( ; index < length ; index++ ) {
        animation.tweens[ index ].run( percent );
      }

      deferred.notifyWith( elem, [ animation, percent, remaining ]);

      if ( percent < 1 && length ) {
        return remaining;
      } else {
        deferred.resolveWith( elem, [ animation ] );
        return false;
      }
    },
    animation = deferred.promise({
      elem: elem,
      props: jQuery.extend( {}, properties ),
      opts: jQuery.extend( true, { specialEasing: {} }, options ),
      originalProperties: properties,
      originalOptions: options,
      startTime: fxNow || createFxNow(),
      duration: options.duration,
      tweens: [],
      createTween: function( prop, end ) {
        var tween = jQuery.Tween( elem, animation.opts, prop, end,
            animation.opts.specialEasing[ prop ] || animation.opts.easing );
        animation.tweens.push( tween );
        return tween;
      },
      stop: function( gotoEnd ) {
        var index = 0,
          // if we are going to the end, we want to run all the tweens
          // otherwise we skip this part
          length = gotoEnd ? animation.tweens.length : 0;
        if ( stopped ) {
          return this;
        }
        stopped = true;
        for ( ; index < length ; index++ ) {
          animation.tweens[ index ].run( 1 );
        }

        // resolve when we played the last frame
        // otherwise, reject
        if ( gotoEnd ) {
          deferred.resolveWith( elem, [ animation, gotoEnd ] );
        } else {
          deferred.rejectWith( elem, [ animation, gotoEnd ] );
        }
        return this;
      }
    }),
    props = animation.props;

  propFilter( props, animation.opts.specialEasing );

  for ( ; index < length ; index++ ) {
    result = animationPrefilters[ index ].call( animation, elem, props, animation.opts );
    if ( result ) {
      return result;
    }
  }

  jQuery.map( props, createTween, animation );

  if ( jQuery.isFunction( animation.opts.start ) ) {
    animation.opts.start.call( elem, animation );
  }

  jQuery.fx.timer(
    jQuery.extend( tick, {
      elem: elem,
      anim: animation,
      queue: animation.opts.queue
    })
  );

  // attach callbacks from options
  return animation.progress( animation.opts.progress )
    .done( animation.opts.done, animation.opts.complete )
    .fail( animation.opts.fail )
    .always( animation.opts.always );
}

jQuery.Animation = jQuery.extend( Animation, {
  tweener: function( props, callback ) {
    if ( jQuery.isFunction( props ) ) {
      callback = props;
      props = [ "*" ];
    } else {
      props = props.split(" ");
    }

    var prop,
      index = 0,
      length = props.length;

    for ( ; index < length ; index++ ) {
      prop = props[ index ];
      tweeners[ prop ] = tweeners[ prop ] || [];
      tweeners[ prop ].unshift( callback );
    }
  },

  prefilter: function( callback, prepend ) {
    if ( prepend ) {
      animationPrefilters.unshift( callback );
    } else {
      animationPrefilters.push( callback );
    }
  }
});

jQuery.speed = function( speed, easing, fn ) {
  var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
    complete: fn || !fn && easing ||
      jQuery.isFunction( speed ) && speed,
    duration: speed,
    easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
  };

  opt.duration = jQuery.fx.off ? 0 : typeof opt.duration === "number" ? opt.duration :
    opt.duration in jQuery.fx.speeds ? jQuery.fx.speeds[ opt.duration ] : jQuery.fx.speeds._default;

  // normalize opt.queue - true/undefined/null -> "fx"
  if ( opt.queue == null || opt.queue === true ) {
    opt.queue = "fx";
  }

  // Queueing
  opt.old = opt.complete;

  opt.complete = function() {
    if ( jQuery.isFunction( opt.old ) ) {
      opt.old.call( this );
    }

    if ( opt.queue ) {
      jQuery.dequeue( this, opt.queue );
    }
  };

  return opt;
};

jQuery.fn.extend({
  fadeTo: function( speed, to, easing, callback ) {

    // show any hidden elements after setting opacity to 0
    return this.filter( isHidden ).css( "opacity", 0 ).show()

      // animate to the value specified
      .end().animate({ opacity: to }, speed, easing, callback );
  },
  animate: function( prop, speed, easing, callback ) {
    var empty = jQuery.isEmptyObject( prop ),
      optall = jQuery.speed( speed, easing, callback ),
      doAnimation = function() {
        // Operate on a copy of prop so per-property easing won't be lost
        var anim = Animation( this, jQuery.extend( {}, prop ), optall );

        // Empty animations, or finishing resolves immediately
        if ( empty || jQuery._data( this, "finish" ) ) {
          anim.stop( true );
        }
      };
      doAnimation.finish = doAnimation;

    return empty || optall.queue === false ?
      this.each( doAnimation ) :
      this.queue( optall.queue, doAnimation );
  },
  stop: function( type, clearQueue, gotoEnd ) {
    var stopQueue = function( hooks ) {
      var stop = hooks.stop;
      delete hooks.stop;
      stop( gotoEnd );
    };

    if ( typeof type !== "string" ) {
      gotoEnd = clearQueue;
      clearQueue = type;
      type = undefined;
    }
    if ( clearQueue && type !== false ) {
      this.queue( type || "fx", [] );
    }

    return this.each(function() {
      var dequeue = true,
        index = type != null && type + "queueHooks",
        timers = jQuery.timers,
        data = jQuery._data( this );

      if ( index ) {
        if ( data[ index ] && data[ index ].stop ) {
          stopQueue( data[ index ] );
        }
      } else {
        for ( index in data ) {
          if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
            stopQueue( data[ index ] );
          }
        }
      }

      for ( index = timers.length; index--; ) {
        if ( timers[ index ].elem === this && (type == null || timers[ index ].queue === type) ) {
          timers[ index ].anim.stop( gotoEnd );
          dequeue = false;
          timers.splice( index, 1 );
        }
      }

      // start the next in the queue if the last step wasn't forced
      // timers currently will call their complete callbacks, which will dequeue
      // but only if they were gotoEnd
      if ( dequeue || !gotoEnd ) {
        jQuery.dequeue( this, type );
      }
    });
  },
  finish: function( type ) {
    if ( type !== false ) {
      type = type || "fx";
    }
    return this.each(function() {
      var index,
        data = jQuery._data( this ),
        queue = data[ type + "queue" ],
        hooks = data[ type + "queueHooks" ],
        timers = jQuery.timers,
        length = queue ? queue.length : 0;

      // enable finishing flag on private data
      data.finish = true;

      // empty the queue first
      jQuery.queue( this, type, [] );

      if ( hooks && hooks.stop ) {
        hooks.stop.call( this, true );
      }

      // look for any active animations, and finish them
      for ( index = timers.length; index--; ) {
        if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
          timers[ index ].anim.stop( true );
          timers.splice( index, 1 );
        }
      }

      // look for any animations in the old queue and finish them
      for ( index = 0; index < length; index++ ) {
        if ( queue[ index ] && queue[ index ].finish ) {
          queue[ index ].finish.call( this );
        }
      }

      // turn off finishing flag
      delete data.finish;
    });
  }
});

jQuery.each([ "toggle", "show", "hide" ], function( i, name ) {
  var cssFn = jQuery.fn[ name ];
  jQuery.fn[ name ] = function( speed, easing, callback ) {
    return speed == null || typeof speed === "boolean" ?
      cssFn.apply( this, arguments ) :
      this.animate( genFx( name, true ), speed, easing, callback );
  };
});

// Generate shortcuts for custom animations
jQuery.each({
  slideDown: genFx("show"),
  slideUp: genFx("hide"),
  slideToggle: genFx("toggle"),
  fadeIn: { opacity: "show" },
  fadeOut: { opacity: "hide" },
  fadeToggle: { opacity: "toggle" }
}, function( name, props ) {
  jQuery.fn[ name ] = function( speed, easing, callback ) {
    return this.animate( props, speed, easing, callback );
  };
});

jQuery.timers = [];
jQuery.fx.tick = function() {
  var timer,
    timers = jQuery.timers,
    i = 0;

  fxNow = jQuery.now();

  for ( ; i < timers.length; i++ ) {
    timer = timers[ i ];
    // Checks the timer has not already been removed
    if ( !timer() && timers[ i ] === timer ) {
      timers.splice( i--, 1 );
    }
  }

  if ( !timers.length ) {
    jQuery.fx.stop();
  }
  fxNow = undefined;
};

jQuery.fx.timer = function( timer ) {
  jQuery.timers.push( timer );
  if ( timer() ) {
    jQuery.fx.start();
  } else {
    jQuery.timers.pop();
  }
};

jQuery.fx.interval = 13;

jQuery.fx.start = function() {
  if ( !timerId ) {
    timerId = setInterval( jQuery.fx.tick, jQuery.fx.interval );
  }
};

jQuery.fx.stop = function() {
  clearInterval( timerId );
  timerId = null;
};

jQuery.fx.speeds = {
  slow: 600,
  fast: 200,
  // Default speed
  _default: 400
};


// Based off of the plugin by Clint Helfers, with permission.
// http://blindsignals.com/index.php/2009/07/jquery-delay/
jQuery.fn.delay = function( time, type ) {
  time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
  type = type || "fx";

  return this.queue( type, function( next, hooks ) {
    var timeout = setTimeout( next, time );
    hooks.stop = function() {
      clearTimeout( timeout );
    };
  });
};


(function() {
  // Minified: var a,b,c,d,e
  var input, div, select, a, opt;

  // Setup
  div = document.createElement( "div" );
  div.setAttribute( "className", "t" );
  div.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>";
  a = div.getElementsByTagName("a")[ 0 ];

  // First batch of tests.
  select = document.createElement("select");
  opt = select.appendChild( document.createElement("option") );
  input = div.getElementsByTagName("input")[ 0 ];

  a.style.cssText = "top:1px";

  // Test setAttribute on camelCase class. If it works, we need attrFixes when doing get/setAttribute (ie6/7)
  support.getSetAttribute = div.className !== "t";

  // Get the style information from getAttribute
  // (IE uses .cssText instead)
  support.style = /top/.test( a.getAttribute("style") );

  // Make sure that URLs aren't manipulated
  // (IE normalizes it by default)
  support.hrefNormalized = a.getAttribute("href") === "/a";

  // Check the default checkbox/radio value ("" on WebKit; "on" elsewhere)
  support.checkOn = !!input.value;

  // Make sure that a selected-by-default option has a working selected property.
  // (WebKit defaults to false instead of true, IE too, if it's in an optgroup)
  support.optSelected = opt.selected;

  // Tests for enctype support on a form (#6743)
  support.enctype = !!document.createElement("form").enctype;

  // Make sure that the options inside disabled selects aren't marked as disabled
  // (WebKit marks them as disabled)
  select.disabled = true;
  support.optDisabled = !opt.disabled;

  // Support: IE8 only
  // Check if we can trust getAttribute("value")
  input = document.createElement( "input" );
  input.setAttribute( "value", "" );
  support.input = input.getAttribute( "value" ) === "";

  // Check if an input maintains its value after becoming a radio
  input.value = "t";
  input.setAttribute( "type", "radio" );
  support.radioValue = input.value === "t";
})();


var rreturn = /\r/g;

jQuery.fn.extend({
  val: function( value ) {
    var hooks, ret, isFunction,
      elem = this[0];

    if ( !arguments.length ) {
      if ( elem ) {
        hooks = jQuery.valHooks[ elem.type ] || jQuery.valHooks[ elem.nodeName.toLowerCase() ];

        if ( hooks && "get" in hooks && (ret = hooks.get( elem, "value" )) !== undefined ) {
          return ret;
        }

        ret = elem.value;

        return typeof ret === "string" ?
          // handle most common string cases
          ret.replace(rreturn, "") :
          // handle cases where value is null/undef or number
          ret == null ? "" : ret;
      }

      return;
    }

    isFunction = jQuery.isFunction( value );

    return this.each(function( i ) {
      var val;

      if ( this.nodeType !== 1 ) {
        return;
      }

      if ( isFunction ) {
        val = value.call( this, i, jQuery( this ).val() );
      } else {
        val = value;
      }

      // Treat null/undefined as ""; convert numbers to string
      if ( val == null ) {
        val = "";
      } else if ( typeof val === "number" ) {
        val += "";
      } else if ( jQuery.isArray( val ) ) {
        val = jQuery.map( val, function( value ) {
          return value == null ? "" : value + "";
        });
      }

      hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];

      // If set returns undefined, fall back to normal setting
      if ( !hooks || !("set" in hooks) || hooks.set( this, val, "value" ) === undefined ) {
        this.value = val;
      }
    });
  }
});

jQuery.extend({
  valHooks: {
    option: {
      get: function( elem ) {
        var val = jQuery.find.attr( elem, "value" );
        return val != null ?
          val :
          // Support: IE10-11+
          // option.text throws exceptions (#14686, #14858)
          jQuery.trim( jQuery.text( elem ) );
      }
    },
    select: {
      get: function( elem ) {
        var value, option,
          options = elem.options,
          index = elem.selectedIndex,
          one = elem.type === "select-one" || index < 0,
          values = one ? null : [],
          max = one ? index + 1 : options.length,
          i = index < 0 ?
            max :
            one ? index : 0;

        // Loop through all the selected options
        for ( ; i < max; i++ ) {
          option = options[ i ];

          // oldIE doesn't update selected after form reset (#2551)
          if ( ( option.selected || i === index ) &&
              // Don't return options that are disabled or in a disabled optgroup
              ( support.optDisabled ? !option.disabled : option.getAttribute("disabled") === null ) &&
              ( !option.parentNode.disabled || !jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {

            // Get the specific value for the option
            value = jQuery( option ).val();

            // We don't need an array for one selects
            if ( one ) {
              return value;
            }

            // Multi-Selects return an array
            values.push( value );
          }
        }

        return values;
      },

      set: function( elem, value ) {
        var optionSet, option,
          options = elem.options,
          values = jQuery.makeArray( value ),
          i = options.length;

        while ( i-- ) {
          option = options[ i ];

          if ( jQuery.inArray( jQuery.valHooks.option.get( option ), values ) >= 0 ) {

            // Support: IE6
            // When new option element is added to select box we need to
            // force reflow of newly added node in order to workaround delay
            // of initialization properties
            try {
              option.selected = optionSet = true;

            } catch ( _ ) {

              // Will be executed only in IE6
              option.scrollHeight;
            }

          } else {
            option.selected = false;
          }
        }

        // Force browsers to behave consistently when non-matching value is set
        if ( !optionSet ) {
          elem.selectedIndex = -1;
        }

        return options;
      }
    }
  }
});

// Radios and checkboxes getter/setter
jQuery.each([ "radio", "checkbox" ], function() {
  jQuery.valHooks[ this ] = {
    set: function( elem, value ) {
      if ( jQuery.isArray( value ) ) {
        return ( elem.checked = jQuery.inArray( jQuery(elem).val(), value ) >= 0 );
      }
    }
  };
  if ( !support.checkOn ) {
    jQuery.valHooks[ this ].get = function( elem ) {
      // Support: Webkit
      // "" is returned instead of "on" if a value isn't specified
      return elem.getAttribute("value") === null ? "on" : elem.value;
    };
  }
});




var nodeHook, boolHook,
  attrHandle = jQuery.expr.attrHandle,
  ruseDefault = /^(?:checked|selected)$/i,
  getSetAttribute = support.getSetAttribute,
  getSetInput = support.input;

jQuery.fn.extend({
  attr: function( name, value ) {
    return access( this, jQuery.attr, name, value, arguments.length > 1 );
  },

  removeAttr: function( name ) {
    return this.each(function() {
      jQuery.removeAttr( this, name );
    });
  }
});

jQuery.extend({
  attr: function( elem, name, value ) {
    var hooks, ret,
      nType = elem.nodeType;

    // don't get/set attributes on text, comment and attribute nodes
    if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
      return;
    }

    // Fallback to prop when attributes are not supported
    if ( typeof elem.getAttribute === strundefined ) {
      return jQuery.prop( elem, name, value );
    }

    // All attributes are lowercase
    // Grab necessary hook if one is defined
    if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
      name = name.toLowerCase();
      hooks = jQuery.attrHooks[ name ] ||
        ( jQuery.expr.match.bool.test( name ) ? boolHook : nodeHook );
    }

    if ( value !== undefined ) {

      if ( value === null ) {
        jQuery.removeAttr( elem, name );

      } else if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) {
        return ret;

      } else {
        elem.setAttribute( name, value + "" );
        return value;
      }

    } else if ( hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ) {
      return ret;

    } else {
      ret = jQuery.find.attr( elem, name );

      // Non-existent attributes return null, we normalize to undefined
      return ret == null ?
        undefined :
        ret;
    }
  },

  removeAttr: function( elem, value ) {
    var name, propName,
      i = 0,
      attrNames = value && value.match( rnotwhite );

    if ( attrNames && elem.nodeType === 1 ) {
      while ( (name = attrNames[i++]) ) {
        propName = jQuery.propFix[ name ] || name;

        // Boolean attributes get special treatment (#10870)
        if ( jQuery.expr.match.bool.test( name ) ) {
          // Set corresponding property to false
          if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {
            elem[ propName ] = false;
          // Support: IE<9
          // Also clear defaultChecked/defaultSelected (if appropriate)
          } else {
            elem[ jQuery.camelCase( "default-" + name ) ] =
              elem[ propName ] = false;
          }

        // See #9699 for explanation of this approach (setting first, then removal)
        } else {
          jQuery.attr( elem, name, "" );
        }

        elem.removeAttribute( getSetAttribute ? name : propName );
      }
    }
  },

  attrHooks: {
    type: {
      set: function( elem, value ) {
        if ( !support.radioValue && value === "radio" && jQuery.nodeName(elem, "input") ) {
          // Setting the type on a radio button after the value resets the value in IE6-9
          // Reset value to default in case type is set after value during creation
          var val = elem.value;
          elem.setAttribute( "type", value );
          if ( val ) {
            elem.value = val;
          }
          return value;
        }
      }
    }
  }
});

// Hook for boolean attributes
boolHook = {
  set: function( elem, value, name ) {
    if ( value === false ) {
      // Remove boolean attributes when set to false
      jQuery.removeAttr( elem, name );
    } else if ( getSetInput && getSetAttribute || !ruseDefault.test( name ) ) {
      // IE<8 needs the *property* name
      elem.setAttribute( !getSetAttribute && jQuery.propFix[ name ] || name, name );

    // Use defaultChecked and defaultSelected for oldIE
    } else {
      elem[ jQuery.camelCase( "default-" + name ) ] = elem[ name ] = true;
    }

    return name;
  }
};

// Retrieve booleans specially
jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {

  var getter = attrHandle[ name ] || jQuery.find.attr;

  attrHandle[ name ] = getSetInput && getSetAttribute || !ruseDefault.test( name ) ?
    function( elem, name, isXML ) {
      var ret, handle;
      if ( !isXML ) {
        // Avoid an infinite loop by temporarily removing this function from the getter
        handle = attrHandle[ name ];
        attrHandle[ name ] = ret;
        ret = getter( elem, name, isXML ) != null ?
          name.toLowerCase() :
          null;
        attrHandle[ name ] = handle;
      }
      return ret;
    } :
    function( elem, name, isXML ) {
      if ( !isXML ) {
        return elem[ jQuery.camelCase( "default-" + name ) ] ?
          name.toLowerCase() :
          null;
      }
    };
});

// fix oldIE attroperties
if ( !getSetInput || !getSetAttribute ) {
  jQuery.attrHooks.value = {
    set: function( elem, value, name ) {
      if ( jQuery.nodeName( elem, "input" ) ) {
        // Does not return so that setAttribute is also used
        elem.defaultValue = value;
      } else {
        // Use nodeHook if defined (#1954); otherwise setAttribute is fine
        return nodeHook && nodeHook.set( elem, value, name );
      }
    }
  };
}

// IE6/7 do not support getting/setting some attributes with get/setAttribute
if ( !getSetAttribute ) {

  // Use this for any attribute in IE6/7
  // This fixes almost every IE6/7 issue
  nodeHook = {
    set: function( elem, value, name ) {
      // Set the existing or create a new attribute node
      var ret = elem.getAttributeNode( name );
      if ( !ret ) {
        elem.setAttributeNode(
          (ret = elem.ownerDocument.createAttribute( name ))
        );
      }

      ret.value = value += "";

      // Break association with cloned elements by also using setAttribute (#9646)
      if ( name === "value" || value === elem.getAttribute( name ) ) {
        return value;
      }
    }
  };

  // Some attributes are constructed with empty-string values when not defined
  attrHandle.id = attrHandle.name = attrHandle.coords =
    function( elem, name, isXML ) {
      var ret;
      if ( !isXML ) {
        return (ret = elem.getAttributeNode( name )) && ret.value !== "" ?
          ret.value :
          null;
      }
    };

  // Fixing value retrieval on a button requires this module
  jQuery.valHooks.button = {
    get: function( elem, name ) {
      var ret = elem.getAttributeNode( name );
      if ( ret && ret.specified ) {
        return ret.value;
      }
    },
    set: nodeHook.set
  };

  // Set contenteditable to false on removals(#10429)
  // Setting to empty string throws an error as an invalid value
  jQuery.attrHooks.contenteditable = {
    set: function( elem, value, name ) {
      nodeHook.set( elem, value === "" ? false : value, name );
    }
  };

  // Set width and height to auto instead of 0 on empty string( Bug #8150 )
  // This is for removals
  jQuery.each([ "width", "height" ], function( i, name ) {
    jQuery.attrHooks[ name ] = {
      set: function( elem, value ) {
        if ( value === "" ) {
          elem.setAttribute( name, "auto" );
          return value;
        }
      }
    };
  });
}

if ( !support.style ) {
  jQuery.attrHooks.style = {
    get: function( elem ) {
      // Return undefined in the case of empty string
      // Note: IE uppercases css property names, but if we were to .toLowerCase()
      // .cssText, that would destroy case senstitivity in URL's, like in "background"
      return elem.style.cssText || undefined;
    },
    set: function( elem, value ) {
      return ( elem.style.cssText = value + "" );
    }
  };
}




var rfocusable = /^(?:input|select|textarea|button|object)$/i,
  rclickable = /^(?:a|area)$/i;

jQuery.fn.extend({
  prop: function( name, value ) {
    return access( this, jQuery.prop, name, value, arguments.length > 1 );
  },

  removeProp: function( name ) {
    name = jQuery.propFix[ name ] || name;
    return this.each(function() {
      // try/catch handles cases where IE balks (such as removing a property on window)
      try {
        this[ name ] = undefined;
        delete this[ name ];
      } catch( e ) {}
    });
  }
});

jQuery.extend({
  propFix: {
    "for": "htmlFor",
    "class": "className"
  },

  prop: function( elem, name, value ) {
    var ret, hooks, notxml,
      nType = elem.nodeType;

    // don't get/set properties on text, comment and attribute nodes
    if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
      return;
    }

    notxml = nType !== 1 || !jQuery.isXMLDoc( elem );

    if ( notxml ) {
      // Fix name and attach hooks
      name = jQuery.propFix[ name ] || name;
      hooks = jQuery.propHooks[ name ];
    }

    if ( value !== undefined ) {
      return hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ?
        ret :
        ( elem[ name ] = value );

    } else {
      return hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ?
        ret :
        elem[ name ];
    }
  },

  propHooks: {
    tabIndex: {
      get: function( elem ) {
        // elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
        // http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
        // Use proper attribute retrieval(#12072)
        var tabindex = jQuery.find.attr( elem, "tabindex" );

        return tabindex ?
          parseInt( tabindex, 10 ) :
          rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ?
            0 :
            -1;
      }
    }
  }
});

// Some attributes require a special call on IE
// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
if ( !support.hrefNormalized ) {
  // href/src property should get the full normalized URL (#10299/#12915)
  jQuery.each([ "href", "src" ], function( i, name ) {
    jQuery.propHooks[ name ] = {
      get: function( elem ) {
        return elem.getAttribute( name, 4 );
      }
    };
  });
}

// Support: Safari, IE9+
// mis-reports the default selected property of an option
// Accessing the parent's selectedIndex property fixes it
if ( !support.optSelected ) {
  jQuery.propHooks.selected = {
    get: function( elem ) {
      var parent = elem.parentNode;

      if ( parent ) {
        parent.selectedIndex;

        // Make sure that it also works with optgroups, see #5701
        if ( parent.parentNode ) {
          parent.parentNode.selectedIndex;
        }
      }
      return null;
    }
  };
}

jQuery.each([
  "tabIndex",
  "readOnly",
  "maxLength",
  "cellSpacing",
  "cellPadding",
  "rowSpan",
  "colSpan",
  "useMap",
  "frameBorder",
  "contentEditable"
], function() {
  jQuery.propFix[ this.toLowerCase() ] = this;
});

// IE6/7 call enctype encoding
if ( !support.enctype ) {
  jQuery.propFix.enctype = "encoding";
}




var rclass = /[\t\r\n\f]/g;

jQuery.fn.extend({
  addClass: function( value ) {
    var classes, elem, cur, clazz, j, finalValue,
      i = 0,
      len = this.length,
      proceed = typeof value === "string" && value;

    if ( jQuery.isFunction( value ) ) {
      return this.each(function( j ) {
        jQuery( this ).addClass( value.call( this, j, this.className ) );
      });
    }

    if ( proceed ) {
      // The disjunction here is for better compressibility (see removeClass)
      classes = ( value || "" ).match( rnotwhite ) || [];

      for ( ; i < len; i++ ) {
        elem = this[ i ];
        cur = elem.nodeType === 1 && ( elem.className ?
          ( " " + elem.className + " " ).replace( rclass, " " ) :
          " "
        );

        if ( cur ) {
          j = 0;
          while ( (clazz = classes[j++]) ) {
            if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
              cur += clazz + " ";
            }
          }

          // only assign if different to avoid unneeded rendering.
          finalValue = jQuery.trim( cur );
          if ( elem.className !== finalValue ) {
            elem.className = finalValue;
          }
        }
      }
    }

    return this;
  },

  removeClass: function( value ) {
    var classes, elem, cur, clazz, j, finalValue,
      i = 0,
      len = this.length,
      proceed = arguments.length === 0 || typeof value === "string" && value;

    if ( jQuery.isFunction( value ) ) {
      return this.each(function( j ) {
        jQuery( this ).removeClass( value.call( this, j, this.className ) );
      });
    }
    if ( proceed ) {
      classes = ( value || "" ).match( rnotwhite ) || [];

      for ( ; i < len; i++ ) {
        elem = this[ i ];
        // This expression is here for better compressibility (see addClass)
        cur = elem.nodeType === 1 && ( elem.className ?
          ( " " + elem.className + " " ).replace( rclass, " " ) :
          ""
        );

        if ( cur ) {
          j = 0;
          while ( (clazz = classes[j++]) ) {
            // Remove *all* instances
            while ( cur.indexOf( " " + clazz + " " ) >= 0 ) {
              cur = cur.replace( " " + clazz + " ", " " );
            }
          }

          // only assign if different to avoid unneeded rendering.
          finalValue = value ? jQuery.trim( cur ) : "";
          if ( elem.className !== finalValue ) {
            elem.className = finalValue;
          }
        }
      }
    }

    return this;
  },

  toggleClass: function( value, stateVal ) {
    var type = typeof value;

    if ( typeof stateVal === "boolean" && type === "string" ) {
      return stateVal ? this.addClass( value ) : this.removeClass( value );
    }

    if ( jQuery.isFunction( value ) ) {
      return this.each(function( i ) {
        jQuery( this ).toggleClass( value.call(this, i, this.className, stateVal), stateVal );
      });
    }

    return this.each(function() {
      if ( type === "string" ) {
        // toggle individual class names
        var className,
          i = 0,
          self = jQuery( this ),
          classNames = value.match( rnotwhite ) || [];

        while ( (className = classNames[ i++ ]) ) {
          // check each className given, space separated list
          if ( self.hasClass( className ) ) {
            self.removeClass( className );
          } else {
            self.addClass( className );
          }
        }

      // Toggle whole class name
      } else if ( type === strundefined || type === "boolean" ) {
        if ( this.className ) {
          // store className if set
          jQuery._data( this, "__className__", this.className );
        }

        // If the element has a class name or if we're passed "false",
        // then remove the whole classname (if there was one, the above saved it).
        // Otherwise bring back whatever was previously saved (if anything),
        // falling back to the empty string if nothing was stored.
        this.className = this.className || value === false ? "" : jQuery._data( this, "__className__" ) || "";
      }
    });
  },

  hasClass: function( selector ) {
    var className = " " + selector + " ",
      i = 0,
      l = this.length;
    for ( ; i < l; i++ ) {
      if ( this[i].nodeType === 1 && (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) >= 0 ) {
        return true;
      }
    }

    return false;
  }
});




// Return jQuery for attributes-only inclusion


jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " +
  "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
  "change select submit keydown keypress keyup error contextmenu").split(" "), function( i, name ) {

  // Handle event binding
  jQuery.fn[ name ] = function( data, fn ) {
    return arguments.length > 0 ?
      this.on( name, null, data, fn ) :
      this.trigger( name );
  };
});

jQuery.fn.extend({
  hover: function( fnOver, fnOut ) {
    return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
  },

  bind: function( types, data, fn ) {
    return this.on( types, null, data, fn );
  },
  unbind: function( types, fn ) {
    return this.off( types, null, fn );
  },

  delegate: function( selector, types, data, fn ) {
    return this.on( types, selector, data, fn );
  },
  undelegate: function( selector, types, fn ) {
    // ( namespace ) or ( selector, types [, fn] )
    return arguments.length === 1 ? this.off( selector, "**" ) : this.off( types, selector || "**", fn );
  }
});


var nonce = jQuery.now();

var rquery = (/\?/);



var rvalidtokens = /(,)|(\[|{)|(}|])|"(?:[^"\\\r\n]|\\["\\\/bfnrt]|\\u[\da-fA-F]{4})*"\s*:?|true|false|null|-?(?!0\d)\d+(?:\.\d+|)(?:[eE][+-]?\d+|)/g;

jQuery.parseJSON = function( data ) {
  // Attempt to parse using the native JSON parser first
  if ( window.JSON && window.JSON.parse ) {
    // Support: Android 2.3
    // Workaround failure to string-cast null input
    return window.JSON.parse( data + "" );
  }

  var requireNonComma,
    depth = null,
    str = jQuery.trim( data + "" );

  // Guard against invalid (and possibly dangerous) input by ensuring that nothing remains
  // after removing valid tokens
  return str && !jQuery.trim( str.replace( rvalidtokens, function( token, comma, open, close ) {

    // Force termination if we see a misplaced comma
    if ( requireNonComma && comma ) {
      depth = 0;
    }

    // Perform no more replacements after returning to outermost depth
    if ( depth === 0 ) {
      return token;
    }

    // Commas must not follow "[", "{", or ","
    requireNonComma = open || comma;

    // Determine new depth
    // array/object open ("[" or "{"): depth += true - false (increment)
    // array/object close ("]" or "}"): depth += false - true (decrement)
    // other cases ("," or primitive): depth += true - true (numeric cast)
    depth += !close - !open;

    // Remove this token
    return "";
  }) ) ?
    ( Function( "return " + str ) )() :
    jQuery.error( "Invalid JSON: " + data );
};


// Cross-browser xml parsing
jQuery.parseXML = function( data ) {
  var xml, tmp;
  if ( !data || typeof data !== "string" ) {
    return null;
  }
  try {
    if ( window.DOMParser ) { // Standard
      tmp = new DOMParser();
      xml = tmp.parseFromString( data, "text/xml" );
    } else { // IE
      xml = new ActiveXObject( "Microsoft.XMLDOM" );
      xml.async = "false";
      xml.loadXML( data );
    }
  } catch( e ) {
    xml = undefined;
  }
  if ( !xml || !xml.documentElement || xml.getElementsByTagName( "parsererror" ).length ) {
    jQuery.error( "Invalid XML: " + data );
  }
  return xml;
};


var
  // Document location
  ajaxLocParts,
  ajaxLocation,

  rhash = /#.*$/,
  rts = /([?&])_=[^&]*/,
  rheaders = /^(.*?):[ \t]*([^\r\n]*)\r?$/mg, // IE leaves an \r character at EOL
  // #7653, #8125, #8152: local protocol detection
  rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
  rnoContent = /^(?:GET|HEAD)$/,
  rprotocol = /^\/\//,
  rurl = /^([\w.+-]+:)(?:\/\/(?:[^\/?#]*@|)([^\/?#:]*)(?::(\d+)|)|)/,

  /* Prefilters
   * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
   * 2) These are called:
   *    - BEFORE asking for a transport
   *    - AFTER param serialization (s.data is a string if s.processData is true)
   * 3) key is the dataType
   * 4) the catchall symbol "*" can be used
   * 5) execution will start with transport dataType and THEN continue down to "*" if needed
   */
  prefilters = {},

  /* Transports bindings
   * 1) key is the dataType
   * 2) the catchall symbol "*" can be used
   * 3) selection will start with transport dataType and THEN go to "*" if needed
   */
  transports = {},

  // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
  allTypes = "*/".concat("*");

// #8138, IE may throw an exception when accessing
// a field from window.location if document.domain has been set
try {
  ajaxLocation = location.href;
} catch( e ) {
  // Use the href attribute of an A element
  // since IE will modify it given document.location
  ajaxLocation = document.createElement( "a" );
  ajaxLocation.href = "";
  ajaxLocation = ajaxLocation.href;
}

// Segment location into parts
ajaxLocParts = rurl.exec( ajaxLocation.toLowerCase() ) || [];

// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
function addToPrefiltersOrTransports( structure ) {

  // dataTypeExpression is optional and defaults to "*"
  return function( dataTypeExpression, func ) {

    if ( typeof dataTypeExpression !== "string" ) {
      func = dataTypeExpression;
      dataTypeExpression = "*";
    }

    var dataType,
      i = 0,
      dataTypes = dataTypeExpression.toLowerCase().match( rnotwhite ) || [];

    if ( jQuery.isFunction( func ) ) {
      // For each dataType in the dataTypeExpression
      while ( (dataType = dataTypes[i++]) ) {
        // Prepend if requested
        if ( dataType.charAt( 0 ) === "+" ) {
          dataType = dataType.slice( 1 ) || "*";
          (structure[ dataType ] = structure[ dataType ] || []).unshift( func );

        // Otherwise append
        } else {
          (structure[ dataType ] = structure[ dataType ] || []).push( func );
        }
      }
    }
  };
}

// Base inspection function for prefilters and transports
function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {

  var inspected = {},
    seekingTransport = ( structure === transports );

  function inspect( dataType ) {
    var selected;
    inspected[ dataType ] = true;
    jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
      var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
      if ( typeof dataTypeOrTransport === "string" && !seekingTransport && !inspected[ dataTypeOrTransport ] ) {
        options.dataTypes.unshift( dataTypeOrTransport );
        inspect( dataTypeOrTransport );
        return false;
      } else if ( seekingTransport ) {
        return !( selected = dataTypeOrTransport );
      }
    });
    return selected;
  }

  return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
}

// A special extend for ajax options
// that takes "flat" options (not to be deep extended)
// Fixes #9887
function ajaxExtend( target, src ) {
  var deep, key,
    flatOptions = jQuery.ajaxSettings.flatOptions || {};

  for ( key in src ) {
    if ( src[ key ] !== undefined ) {
      ( flatOptions[ key ] ? target : ( deep || (deep = {}) ) )[ key ] = src[ key ];
    }
  }
  if ( deep ) {
    jQuery.extend( true, target, deep );
  }

  return target;
}

/* Handles responses to an ajax request:
 * - finds the right dataType (mediates between content-type and expected dataType)
 * - returns the corresponding response
 */
function ajaxHandleResponses( s, jqXHR, responses ) {
  var firstDataType, ct, finalDataType, type,
    contents = s.contents,
    dataTypes = s.dataTypes;

  // Remove auto dataType and get content-type in the process
  while ( dataTypes[ 0 ] === "*" ) {
    dataTypes.shift();
    if ( ct === undefined ) {
      ct = s.mimeType || jqXHR.getResponseHeader("Content-Type");
    }
  }

  // Check if we're dealing with a known content-type
  if ( ct ) {
    for ( type in contents ) {
      if ( contents[ type ] && contents[ type ].test( ct ) ) {
        dataTypes.unshift( type );
        break;
      }
    }
  }

  // Check to see if we have a response for the expected dataType
  if ( dataTypes[ 0 ] in responses ) {
    finalDataType = dataTypes[ 0 ];
  } else {
    // Try convertible dataTypes
    for ( type in responses ) {
      if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[0] ] ) {
        finalDataType = type;
        break;
      }
      if ( !firstDataType ) {
        firstDataType = type;
      }
    }
    // Or just use first one
    finalDataType = finalDataType || firstDataType;
  }

  // If we found a dataType
  // We add the dataType to the list if needed
  // and return the corresponding response
  if ( finalDataType ) {
    if ( finalDataType !== dataTypes[ 0 ] ) {
      dataTypes.unshift( finalDataType );
    }
    return responses[ finalDataType ];
  }
}

/* Chain conversions given the request and the original response
 * Also sets the responseXXX fields on the jqXHR instance
 */
function ajaxConvert( s, response, jqXHR, isSuccess ) {
  var conv2, current, conv, tmp, prev,
    converters = {},
    // Work with a copy of dataTypes in case we need to modify it for conversion
    dataTypes = s.dataTypes.slice();

  // Create converters map with lowercased keys
  if ( dataTypes[ 1 ] ) {
    for ( conv in s.converters ) {
      converters[ conv.toLowerCase() ] = s.converters[ conv ];
    }
  }

  current = dataTypes.shift();

  // Convert to each sequential dataType
  while ( current ) {

    if ( s.responseFields[ current ] ) {
      jqXHR[ s.responseFields[ current ] ] = response;
    }

    // Apply the dataFilter if provided
    if ( !prev && isSuccess && s.dataFilter ) {
      response = s.dataFilter( response, s.dataType );
    }

    prev = current;
    current = dataTypes.shift();

    if ( current ) {

      // There's only work to do if current dataType is non-auto
      if ( current === "*" ) {

        current = prev;

      // Convert response if prev dataType is non-auto and differs from current
      } else if ( prev !== "*" && prev !== current ) {

        // Seek a direct converter
        conv = converters[ prev + " " + current ] || converters[ "* " + current ];

        // If none found, seek a pair
        if ( !conv ) {
          for ( conv2 in converters ) {

            // If conv2 outputs current
            tmp = conv2.split( " " );
            if ( tmp[ 1 ] === current ) {

              // If prev can be converted to accepted input
              conv = converters[ prev + " " + tmp[ 0 ] ] ||
                converters[ "* " + tmp[ 0 ] ];
              if ( conv ) {
                // Condense equivalence converters
                if ( conv === true ) {
                  conv = converters[ conv2 ];

                // Otherwise, insert the intermediate dataType
                } else if ( converters[ conv2 ] !== true ) {
                  current = tmp[ 0 ];
                  dataTypes.unshift( tmp[ 1 ] );
                }
                break;
              }
            }
          }
        }

        // Apply converter (if not an equivalence)
        if ( conv !== true ) {

          // Unless errors are allowed to bubble, catch and return them
          if ( conv && s[ "throws" ] ) {
            response = conv( response );
          } else {
            try {
              response = conv( response );
            } catch ( e ) {
              return { state: "parsererror", error: conv ? e : "No conversion from " + prev + " to " + current };
            }
          }
        }
      }
    }
  }

  return { state: "success", data: response };
}

jQuery.extend({

  // Counter for holding the number of active queries
  active: 0,

  // Last-Modified header cache for next request
  lastModified: {},
  etag: {},

  ajaxSettings: {
    url: ajaxLocation,
    type: "GET",
    isLocal: rlocalProtocol.test( ajaxLocParts[ 1 ] ),
    global: true,
    processData: true,
    async: true,
    contentType: "application/x-www-form-urlencoded; charset=UTF-8",
    /*
    timeout: 0,
    data: null,
    dataType: null,
    username: null,
    password: null,
    cache: null,
    throws: false,
    traditional: false,
    headers: {},
    */

    accepts: {
      "*": allTypes,
      text: "text/plain",
      html: "text/html",
      xml: "application/xml, text/xml",
      json: "application/json, text/javascript"
    },

    contents: {
      xml: /xml/,
      html: /html/,
      json: /json/
    },

    responseFields: {
      xml: "responseXML",
      text: "responseText",
      json: "responseJSON"
    },

    // Data converters
    // Keys separate source (or catchall "*") and destination types with a single space
    converters: {

      // Convert anything to text
      "* text": String,

      // Text to html (true = no transformation)
      "text html": true,

      // Evaluate text as a json expression
      "text json": jQuery.parseJSON,

      // Parse text as xml
      "text xml": jQuery.parseXML
    },

    // For options that shouldn't be deep extended:
    // you can add your own custom options here if
    // and when you create one that shouldn't be
    // deep extended (see ajaxExtend)
    flatOptions: {
      url: true,
      context: true
    }
  },

  // Creates a full fledged settings object into target
  // with both ajaxSettings and settings fields.
  // If target is omitted, writes into ajaxSettings.
  ajaxSetup: function( target, settings ) {
    return settings ?

      // Building a settings object
      ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :

      // Extending ajaxSettings
      ajaxExtend( jQuery.ajaxSettings, target );
  },

  ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
  ajaxTransport: addToPrefiltersOrTransports( transports ),

  // Main method
  ajax: function( url, options ) {

    // If url is an object, simulate pre-1.5 signature
    if ( typeof url === "object" ) {
      options = url;
      url = undefined;
    }

    // Force options to be an object
    options = options || {};

    var // Cross-domain detection vars
      parts,
      // Loop variable
      i,
      // URL without anti-cache param
      cacheURL,
      // Response headers as string
      responseHeadersString,
      // timeout handle
      timeoutTimer,

      // To know if global events are to be dispatched
      fireGlobals,

      transport,
      // Response headers
      responseHeaders,
      // Create the final options object
      s = jQuery.ajaxSetup( {}, options ),
      // Callbacks context
      callbackContext = s.context || s,
      // Context for global events is callbackContext if it is a DOM node or jQuery collection
      globalEventContext = s.context && ( callbackContext.nodeType || callbackContext.jquery ) ?
        jQuery( callbackContext ) :
        jQuery.event,
      // Deferreds
      deferred = jQuery.Deferred(),
      completeDeferred = jQuery.Callbacks("once memory"),
      // Status-dependent callbacks
      statusCode = s.statusCode || {},
      // Headers (they are sent all at once)
      requestHeaders = {},
      requestHeadersNames = {},
      // The jqXHR state
      state = 0,
      // Default abort message
      strAbort = "canceled",
      // Fake xhr
      jqXHR = {
        readyState: 0,

        // Builds headers hashtable if needed
        getResponseHeader: function( key ) {
          var match;
          if ( state === 2 ) {
            if ( !responseHeaders ) {
              responseHeaders = {};
              while ( (match = rheaders.exec( responseHeadersString )) ) {
                responseHeaders[ match[1].toLowerCase() ] = match[ 2 ];
              }
            }
            match = responseHeaders[ key.toLowerCase() ];
          }
          return match == null ? null : match;
        },

        // Raw string
        getAllResponseHeaders: function() {
          return state === 2 ? responseHeadersString : null;
        },

        // Caches the header
        setRequestHeader: function( name, value ) {
          var lname = name.toLowerCase();
          if ( !state ) {
            name = requestHeadersNames[ lname ] = requestHeadersNames[ lname ] || name;
            requestHeaders[ name ] = value;
          }
          return this;
        },

        // Overrides response content-type header
        overrideMimeType: function( type ) {
          if ( !state ) {
            s.mimeType = type;
          }
          return this;
        },

        // Status-dependent callbacks
        statusCode: function( map ) {
          var code;
          if ( map ) {
            if ( state < 2 ) {
              for ( code in map ) {
                // Lazy-add the new callback in a way that preserves old ones
                statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
              }
            } else {
              // Execute the appropriate callbacks
              jqXHR.always( map[ jqXHR.status ] );
            }
          }
          return this;
        },

        // Cancel the request
        abort: function( statusText ) {
          var finalText = statusText || strAbort;
          if ( transport ) {
            transport.abort( finalText );
          }
          done( 0, finalText );
          return this;
        }
      };

    // Attach deferreds
    deferred.promise( jqXHR ).complete = completeDeferred.add;
    jqXHR.success = jqXHR.done;
    jqXHR.error = jqXHR.fail;

    // Remove hash character (#7531: and string promotion)
    // Add protocol if not provided (#5866: IE7 issue with protocol-less urls)
    // Handle falsy url in the settings object (#10093: consistency with old signature)
    // We also use the url parameter if available
    s.url = ( ( url || s.url || ajaxLocation ) + "" ).replace( rhash, "" ).replace( rprotocol, ajaxLocParts[ 1 ] + "//" );

    // Alias method option to type as per ticket #12004
    s.type = options.method || options.type || s.method || s.type;

    // Extract dataTypes list
    s.dataTypes = jQuery.trim( s.dataType || "*" ).toLowerCase().match( rnotwhite ) || [ "" ];

    // A cross-domain request is in order when we have a protocol:host:port mismatch
    if ( s.crossDomain == null ) {
      parts = rurl.exec( s.url.toLowerCase() );
      s.crossDomain = !!( parts &&
        ( parts[ 1 ] !== ajaxLocParts[ 1 ] || parts[ 2 ] !== ajaxLocParts[ 2 ] ||
          ( parts[ 3 ] || ( parts[ 1 ] === "http:" ? "80" : "443" ) ) !==
            ( ajaxLocParts[ 3 ] || ( ajaxLocParts[ 1 ] === "http:" ? "80" : "443" ) ) )
      );
    }

    // Convert data if not already a string
    if ( s.data && s.processData && typeof s.data !== "string" ) {
      s.data = jQuery.param( s.data, s.traditional );
    }

    // Apply prefilters
    inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );

    // If request was aborted inside a prefilter, stop there
    if ( state === 2 ) {
      return jqXHR;
    }

    // We can fire global events as of now if asked to
    fireGlobals = s.global;

    // Watch for a new set of requests
    if ( fireGlobals && jQuery.active++ === 0 ) {
      jQuery.event.trigger("ajaxStart");
    }

    // Uppercase the type
    s.type = s.type.toUpperCase();

    // Determine if request has content
    s.hasContent = !rnoContent.test( s.type );

    // Save the URL in case we're toying with the If-Modified-Since
    // and/or If-None-Match header later on
    cacheURL = s.url;

    // More options handling for requests with no content
    if ( !s.hasContent ) {

      // If data is available, append data to url
      if ( s.data ) {
        cacheURL = ( s.url += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data );
        // #9682: remove data so that it's not used in an eventual retry
        delete s.data;
      }

      // Add anti-cache in url if needed
      if ( s.cache === false ) {
        s.url = rts.test( cacheURL ) ?

          // If there is already a '_' parameter, set its value
          cacheURL.replace( rts, "$1_=" + nonce++ ) :

          // Otherwise add one to the end
          cacheURL + ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + nonce++;
      }
    }

    // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
    if ( s.ifModified ) {
      if ( jQuery.lastModified[ cacheURL ] ) {
        jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
      }
      if ( jQuery.etag[ cacheURL ] ) {
        jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
      }
    }

    // Set the correct header, if data is being sent
    if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
      jqXHR.setRequestHeader( "Content-Type", s.contentType );
    }

    // Set the Accepts header for the server, depending on the dataType
    jqXHR.setRequestHeader(
      "Accept",
      s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[0] ] ?
        s.accepts[ s.dataTypes[0] ] + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
        s.accepts[ "*" ]
    );

    // Check for headers option
    for ( i in s.headers ) {
      jqXHR.setRequestHeader( i, s.headers[ i ] );
    }

    // Allow custom headers/mimetypes and early abort
    if ( s.beforeSend && ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || state === 2 ) ) {
      // Abort if not done already and return
      return jqXHR.abort();
    }

    // aborting is no longer a cancellation
    strAbort = "abort";

    // Install callbacks on deferreds
    for ( i in { success: 1, error: 1, complete: 1 } ) {
      jqXHR[ i ]( s[ i ] );
    }

    // Get transport
    transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );

    // If no transport, we auto-abort
    if ( !transport ) {
      done( -1, "No Transport" );
    } else {
      jqXHR.readyState = 1;

      // Send global event
      if ( fireGlobals ) {
        globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
      }
      // Timeout
      if ( s.async && s.timeout > 0 ) {
        timeoutTimer = setTimeout(function() {
          jqXHR.abort("timeout");
        }, s.timeout );
      }

      try {
        state = 1;
        transport.send( requestHeaders, done );
      } catch ( e ) {
        // Propagate exception as error if not done
        if ( state < 2 ) {
          done( -1, e );
        // Simply rethrow otherwise
        } else {
          throw e;
        }
      }
    }

    // Callback for when everything is done
    function done( status, nativeStatusText, responses, headers ) {
      var isSuccess, success, error, response, modified,
        statusText = nativeStatusText;

      // Called once
      if ( state === 2 ) {
        return;
      }

      // State is "done" now
      state = 2;

      // Clear timeout if it exists
      if ( timeoutTimer ) {
        clearTimeout( timeoutTimer );
      }

      // Dereference transport for early garbage collection
      // (no matter how long the jqXHR object will be used)
      transport = undefined;

      // Cache response headers
      responseHeadersString = headers || "";

      // Set readyState
      jqXHR.readyState = status > 0 ? 4 : 0;

      // Determine if successful
      isSuccess = status >= 200 && status < 300 || status === 304;

      // Get response data
      if ( responses ) {
        response = ajaxHandleResponses( s, jqXHR, responses );
      }

      // Convert no matter what (that way responseXXX fields are always set)
      response = ajaxConvert( s, response, jqXHR, isSuccess );

      // If successful, handle type chaining
      if ( isSuccess ) {

        // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
        if ( s.ifModified ) {
          modified = jqXHR.getResponseHeader("Last-Modified");
          if ( modified ) {
            jQuery.lastModified[ cacheURL ] = modified;
          }
          modified = jqXHR.getResponseHeader("etag");
          if ( modified ) {
            jQuery.etag[ cacheURL ] = modified;
          }
        }

        // if no content
        if ( status === 204 || s.type === "HEAD" ) {
          statusText = "nocontent";

        // if not modified
        } else if ( status === 304 ) {
          statusText = "notmodified";

        // If we have data, let's convert it
        } else {
          statusText = response.state;
          success = response.data;
          error = response.error;
          isSuccess = !error;
        }
      } else {
        // We extract error from statusText
        // then normalize statusText and status for non-aborts
        error = statusText;
        if ( status || !statusText ) {
          statusText = "error";
          if ( status < 0 ) {
            status = 0;
          }
        }
      }

      // Set data for the fake xhr object
      jqXHR.status = status;
      jqXHR.statusText = ( nativeStatusText || statusText ) + "";

      // Success/Error
      if ( isSuccess ) {
        deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
      } else {
        deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
      }

      // Status-dependent callbacks
      jqXHR.statusCode( statusCode );
      statusCode = undefined;

      if ( fireGlobals ) {
        globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
          [ jqXHR, s, isSuccess ? success : error ] );
      }

      // Complete
      completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );

      if ( fireGlobals ) {
        globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );
        // Handle the global AJAX counter
        if ( !( --jQuery.active ) ) {
          jQuery.event.trigger("ajaxStop");
        }
      }
    }

    return jqXHR;
  },

  getJSON: function( url, data, callback ) {
    return jQuery.get( url, data, callback, "json" );
  },

  getScript: function( url, callback ) {
    return jQuery.get( url, undefined, callback, "script" );
  }
});

jQuery.each( [ "get", "post" ], function( i, method ) {
  jQuery[ method ] = function( url, data, callback, type ) {
    // shift arguments if data argument was omitted
    if ( jQuery.isFunction( data ) ) {
      type = type || callback;
      callback = data;
      data = undefined;
    }

    return jQuery.ajax({
      url: url,
      type: method,
      dataType: type,
      data: data,
      success: callback
    });
  };
});

// Attach a bunch of functions for handling common AJAX events
jQuery.each( [ "ajaxStart", "ajaxStop", "ajaxComplete", "ajaxError", "ajaxSuccess", "ajaxSend" ], function( i, type ) {
  jQuery.fn[ type ] = function( fn ) {
    return this.on( type, fn );
  };
});


jQuery._evalUrl = function( url ) {
  return jQuery.ajax({
    url: url,
    type: "GET",
    dataType: "script",
    async: false,
    global: false,
    "throws": true
  });
};


jQuery.fn.extend({
  wrapAll: function( html ) {
    if ( jQuery.isFunction( html ) ) {
      return this.each(function(i) {
        jQuery(this).wrapAll( html.call(this, i) );
      });
    }

    if ( this[0] ) {
      // The elements to wrap the target around
      var wrap = jQuery( html, this[0].ownerDocument ).eq(0).clone(true);

      if ( this[0].parentNode ) {
        wrap.insertBefore( this[0] );
      }

      wrap.map(function() {
        var elem = this;

        while ( elem.firstChild && elem.firstChild.nodeType === 1 ) {
          elem = elem.firstChild;
        }

        return elem;
      }).append( this );
    }

    return this;
  },

  wrapInner: function( html ) {
    if ( jQuery.isFunction( html ) ) {
      return this.each(function(i) {
        jQuery(this).wrapInner( html.call(this, i) );
      });
    }

    return this.each(function() {
      var self = jQuery( this ),
        contents = self.contents();

      if ( contents.length ) {
        contents.wrapAll( html );

      } else {
        self.append( html );
      }
    });
  },

  wrap: function( html ) {
    var isFunction = jQuery.isFunction( html );

    return this.each(function(i) {
      jQuery( this ).wrapAll( isFunction ? html.call(this, i) : html );
    });
  },

  unwrap: function() {
    return this.parent().each(function() {
      if ( !jQuery.nodeName( this, "body" ) ) {
        jQuery( this ).replaceWith( this.childNodes );
      }
    }).end();
  }
});


jQuery.expr.filters.hidden = function( elem ) {
  // Support: Opera <= 12.12
  // Opera reports offsetWidths and offsetHeights less than zero on some elements
  return elem.offsetWidth <= 0 && elem.offsetHeight <= 0 ||
    (!support.reliableHiddenOffsets() &&
      ((elem.style && elem.style.display) || jQuery.css( elem, "display" )) === "none");
};

jQuery.expr.filters.visible = function( elem ) {
  return !jQuery.expr.filters.hidden( elem );
};




var r20 = /%20/g,
  rbracket = /\[\]$/,
  rCRLF = /\r?\n/g,
  rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
  rsubmittable = /^(?:input|select|textarea|keygen)/i;

function buildParams( prefix, obj, traditional, add ) {
  var name;

  if ( jQuery.isArray( obj ) ) {
    // Serialize array item.
    jQuery.each( obj, function( i, v ) {
      if ( traditional || rbracket.test( prefix ) ) {
        // Treat each array item as a scalar.
        add( prefix, v );

      } else {
        // Item is non-scalar (array or object), encode its numeric index.
        buildParams( prefix + "[" + ( typeof v === "object" ? i : "" ) + "]", v, traditional, add );
      }
    });

  } else if ( !traditional && jQuery.type( obj ) === "object" ) {
    // Serialize object item.
    for ( name in obj ) {
      buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
    }

  } else {
    // Serialize scalar item.
    add( prefix, obj );
  }
}

// Serialize an array of form elements or a set of
// key/values into a query string
jQuery.param = function( a, traditional ) {
  var prefix,
    s = [],
    add = function( key, value ) {
      // If value is a function, invoke it and return its value
      value = jQuery.isFunction( value ) ? value() : ( value == null ? "" : value );
      s[ s.length ] = encodeURIComponent( key ) + "=" + encodeURIComponent( value );
    };

  // Set traditional to true for jQuery <= 1.3.2 behavior.
  if ( traditional === undefined ) {
    traditional = jQuery.ajaxSettings && jQuery.ajaxSettings.traditional;
  }

  // If an array was passed in, assume that it is an array of form elements.
  if ( jQuery.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
    // Serialize the form elements
    jQuery.each( a, function() {
      add( this.name, this.value );
    });

  } else {
    // If traditional, encode the "old" way (the way 1.3.2 or older
    // did it), otherwise encode params recursively.
    for ( prefix in a ) {
      buildParams( prefix, a[ prefix ], traditional, add );
    }
  }

  // Return the resulting serialization
  return s.join( "&" ).replace( r20, "+" );
};

jQuery.fn.extend({
  serialize: function() {
    return jQuery.param( this.serializeArray() );
  },
  serializeArray: function() {
    return this.map(function() {
      // Can add propHook for "elements" to filter or add form elements
      var elements = jQuery.prop( this, "elements" );
      return elements ? jQuery.makeArray( elements ) : this;
    })
    .filter(function() {
      var type = this.type;
      // Use .is(":disabled") so that fieldset[disabled] works
      return this.name && !jQuery( this ).is( ":disabled" ) &&
        rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
        ( this.checked || !rcheckableType.test( type ) );
    })
    .map(function( i, elem ) {
      var val = jQuery( this ).val();

      return val == null ?
        null :
        jQuery.isArray( val ) ?
          jQuery.map( val, function( val ) {
            return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
          }) :
          { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
    }).get();
  }
});


// Create the request object
// (This is still attached to ajaxSettings for backward compatibility)
jQuery.ajaxSettings.xhr = window.ActiveXObject !== undefined ?
  // Support: IE6+
  function() {

    // XHR cannot access local files, always use ActiveX for that case
    return !this.isLocal &&

      // Support: IE7-8
      // oldIE XHR does not support non-RFC2616 methods (#13240)
      // See http://msdn.microsoft.com/en-us/library/ie/ms536648(v=vs.85).aspx
      // and http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9
      // Although this check for six methods instead of eight
      // since IE also does not support "trace" and "connect"
      /^(get|post|head|put|delete|options)$/i.test( this.type ) &&

      createStandardXHR() || createActiveXHR();
  } :
  // For all other browsers, use the standard XMLHttpRequest object
  createStandardXHR;

var xhrId = 0,
  xhrCallbacks = {},
  xhrSupported = jQuery.ajaxSettings.xhr();

// Support: IE<10
// Open requests must be manually aborted on unload (#5280)
if ( window.ActiveXObject ) {
  jQuery( window ).on( "unload", function() {
    for ( var key in xhrCallbacks ) {
      xhrCallbacks[ key ]( undefined, true );
    }
  });
}

// Determine support properties
support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
xhrSupported = support.ajax = !!xhrSupported;

// Create transport if the browser can provide an xhr
if ( xhrSupported ) {

  jQuery.ajaxTransport(function( options ) {
    // Cross domain only allowed if supported through XMLHttpRequest
    if ( !options.crossDomain || support.cors ) {

      var callback;

      return {
        send: function( headers, complete ) {
          var i,
            xhr = options.xhr(),
            id = ++xhrId;

          // Open the socket
          xhr.open( options.type, options.url, options.async, options.username, options.password );

          // Apply custom fields if provided
          if ( options.xhrFields ) {
            for ( i in options.xhrFields ) {
              xhr[ i ] = options.xhrFields[ i ];
            }
          }

          // Override mime type if needed
          if ( options.mimeType && xhr.overrideMimeType ) {
            xhr.overrideMimeType( options.mimeType );
          }

          // X-Requested-With header
          // For cross-domain requests, seeing as conditions for a preflight are
          // akin to a jigsaw puzzle, we simply never set it to be sure.
          // (it can always be set on a per-request basis or even using ajaxSetup)
          // For same-domain requests, won't change header if already provided.
          if ( !options.crossDomain && !headers["X-Requested-With"] ) {
            headers["X-Requested-With"] = "XMLHttpRequest";
          }

          // Set headers
          for ( i in headers ) {
            // Support: IE<9
            // IE's ActiveXObject throws a 'Type Mismatch' exception when setting
            // request header to a null-value.
            //
            // To keep consistent with other XHR implementations, cast the value
            // to string and ignore `undefined`.
            if ( headers[ i ] !== undefined ) {
              xhr.setRequestHeader( i, headers[ i ] + "" );
            }
          }

          // Do send the request
          // This may raise an exception which is actually
          // handled in jQuery.ajax (so no try/catch here)
          xhr.send( ( options.hasContent && options.data ) || null );

          // Listener
          callback = function( _, isAbort ) {
            var status, statusText, responses;

            // Was never called and is aborted or complete
            if ( callback && ( isAbort || xhr.readyState === 4 ) ) {
              // Clean up
              delete xhrCallbacks[ id ];
              callback = undefined;
              xhr.onreadystatechange = jQuery.noop;

              // Abort manually if needed
              if ( isAbort ) {
                if ( xhr.readyState !== 4 ) {
                  xhr.abort();
                }
              } else {
                responses = {};
                status = xhr.status;

                // Support: IE<10
                // Accessing binary-data responseText throws an exception
                // (#11426)
                if ( typeof xhr.responseText === "string" ) {
                  responses.text = xhr.responseText;
                }

                // Firefox throws an exception when accessing
                // statusText for faulty cross-domain requests
                try {
                  statusText = xhr.statusText;
                } catch( e ) {
                  // We normalize with Webkit giving an empty statusText
                  statusText = "";
                }

                // Filter status for non standard behaviors

                // If the request is local and we have data: assume a success
                // (success with no data won't get notified, that's the best we
                // can do given current implementations)
                if ( !status && options.isLocal && !options.crossDomain ) {
                  status = responses.text ? 200 : 404;
                // IE - #1450: sometimes returns 1223 when it should be 204
                } else if ( status === 1223 ) {
                  status = 204;
                }
              }
            }

            // Call complete if needed
            if ( responses ) {
              complete( status, statusText, responses, xhr.getAllResponseHeaders() );
            }
          };

          if ( !options.async ) {
            // if we're in sync mode we fire the callback
            callback();
          } else if ( xhr.readyState === 4 ) {
            // (IE6 & IE7) if it's in cache and has been
            // retrieved directly we need to fire the callback
            setTimeout( callback );
          } else {
            // Add to the list of active xhr callbacks
            xhr.onreadystatechange = xhrCallbacks[ id ] = callback;
          }
        },

        abort: function() {
          if ( callback ) {
            callback( undefined, true );
          }
        }
      };
    }
  });
}

// Functions to create xhrs
function createStandardXHR() {
  try {
    return new window.XMLHttpRequest();
  } catch( e ) {}
}

function createActiveXHR() {
  try {
    return new window.ActiveXObject( "Microsoft.XMLHTTP" );
  } catch( e ) {}
}




// Install script dataType
jQuery.ajaxSetup({
  accepts: {
    script: "text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"
  },
  contents: {
    script: /(?:java|ecma)script/
  },
  converters: {
    "text script": function( text ) {
      jQuery.globalEval( text );
      return text;
    }
  }
});

// Handle cache's special case and global
jQuery.ajaxPrefilter( "script", function( s ) {
  if ( s.cache === undefined ) {
    s.cache = false;
  }
  if ( s.crossDomain ) {
    s.type = "GET";
    s.global = false;
  }
});

// Bind script tag hack transport
jQuery.ajaxTransport( "script", function(s) {

  // This transport only deals with cross domain requests
  if ( s.crossDomain ) {

    var script,
      head = document.head || jQuery("head")[0] || document.documentElement;

    return {

      send: function( _, callback ) {

        script = document.createElement("script");

        script.async = true;

        if ( s.scriptCharset ) {
          script.charset = s.scriptCharset;
        }

        script.src = s.url;

        // Attach handlers for all browsers
        script.onload = script.onreadystatechange = function( _, isAbort ) {

          if ( isAbort || !script.readyState || /loaded|complete/.test( script.readyState ) ) {

            // Handle memory leak in IE
            script.onload = script.onreadystatechange = null;

            // Remove the script
            if ( script.parentNode ) {
              script.parentNode.removeChild( script );
            }

            // Dereference the script
            script = null;

            // Callback if not abort
            if ( !isAbort ) {
              callback( 200, "success" );
            }
          }
        };

        // Circumvent IE6 bugs with base elements (#2709 and #4378) by prepending
        // Use native DOM manipulation to avoid our domManip AJAX trickery
        head.insertBefore( script, head.firstChild );
      },

      abort: function() {
        if ( script ) {
          script.onload( undefined, true );
        }
      }
    };
  }
});




var oldCallbacks = [],
  rjsonp = /(=)\?(?=&|$)|\?\?/;

// Default jsonp settings
jQuery.ajaxSetup({
  jsonp: "callback",
  jsonpCallback: function() {
    var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
    this[ callback ] = true;
    return callback;
  }
});

// Detect, normalize options and install callbacks for jsonp requests
jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {

  var callbackName, overwritten, responseContainer,
    jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
      "url" :
      typeof s.data === "string" && !( s.contentType || "" ).indexOf("application/x-www-form-urlencoded") && rjsonp.test( s.data ) && "data"
    );

  // Handle iff the expected data type is "jsonp" or we have a parameter to set
  if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {

    // Get callback name, remembering preexisting value associated with it
    callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
      s.jsonpCallback() :
      s.jsonpCallback;

    // Insert callback into url or form data
    if ( jsonProp ) {
      s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
    } else if ( s.jsonp !== false ) {
      s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
    }

    // Use data converter to retrieve json after script execution
    s.converters["script json"] = function() {
      if ( !responseContainer ) {
        jQuery.error( callbackName + " was not called" );
      }
      return responseContainer[ 0 ];
    };

    // force json dataType
    s.dataTypes[ 0 ] = "json";

    // Install callback
    overwritten = window[ callbackName ];
    window[ callbackName ] = function() {
      responseContainer = arguments;
    };

    // Clean-up function (fires after converters)
    jqXHR.always(function() {
      // Restore preexisting value
      window[ callbackName ] = overwritten;

      // Save back as free
      if ( s[ callbackName ] ) {
        // make sure that re-using the options doesn't screw things around
        s.jsonpCallback = originalSettings.jsonpCallback;

        // save the callback name for future use
        oldCallbacks.push( callbackName );
      }

      // Call if it was a function and we have a response
      if ( responseContainer && jQuery.isFunction( overwritten ) ) {
        overwritten( responseContainer[ 0 ] );
      }

      responseContainer = overwritten = undefined;
    });

    // Delegate to script
    return "script";
  }
});




// data: string of html
// context (optional): If specified, the fragment will be created in this context, defaults to document
// keepScripts (optional): If true, will include scripts passed in the html string
jQuery.parseHTML = function( data, context, keepScripts ) {
  if ( !data || typeof data !== "string" ) {
    return null;
  }
  if ( typeof context === "boolean" ) {
    keepScripts = context;
    context = false;
  }
  context = context || document;

  var parsed = rsingleTag.exec( data ),
    scripts = !keepScripts && [];

  // Single tag
  if ( parsed ) {
    return [ context.createElement( parsed[1] ) ];
  }

  parsed = jQuery.buildFragment( [ data ], context, scripts );

  if ( scripts && scripts.length ) {
    jQuery( scripts ).remove();
  }

  return jQuery.merge( [], parsed.childNodes );
};


// Keep a copy of the old load method
var _load = jQuery.fn.load;

/**
 * Load a url into a page
 */
jQuery.fn.load = function( url, params, callback ) {
  if ( typeof url !== "string" && _load ) {
    return _load.apply( this, arguments );
  }

  var selector, response, type,
    self = this,
    off = url.indexOf(" ");

  if ( off >= 0 ) {
    selector = jQuery.trim( url.slice( off, url.length ) );
    url = url.slice( 0, off );
  }

  // If it's a function
  if ( jQuery.isFunction( params ) ) {

    // We assume that it's the callback
    callback = params;
    params = undefined;

  // Otherwise, build a param string
  } else if ( params && typeof params === "object" ) {
    type = "POST";
  }

  // If we have elements to modify, make the request
  if ( self.length > 0 ) {
    jQuery.ajax({
      url: url,

      // if "type" variable is undefined, then "GET" method will be used
      type: type,
      dataType: "html",
      data: params
    }).done(function( responseText ) {

      // Save response for use in complete callback
      response = arguments;

      self.html( selector ?

        // If a selector was specified, locate the right elements in a dummy div
        // Exclude scripts to avoid IE 'Permission Denied' errors
        jQuery("<div>").append( jQuery.parseHTML( responseText ) ).find( selector ) :

        // Otherwise use the full result
        responseText );

    }).complete( callback && function( jqXHR, status ) {
      self.each( callback, response || [ jqXHR.responseText, status, jqXHR ] );
    });
  }

  return this;
};




jQuery.expr.filters.animated = function( elem ) {
  return jQuery.grep(jQuery.timers, function( fn ) {
    return elem === fn.elem;
  }).length;
};





var docElem = window.document.documentElement;

/**
 * Gets a window from an element
 */
function getWindow( elem ) {
  return jQuery.isWindow( elem ) ?
    elem :
    elem.nodeType === 9 ?
      elem.defaultView || elem.parentWindow :
      false;
}

jQuery.offset = {
  setOffset: function( elem, options, i ) {
    var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
      position = jQuery.css( elem, "position" ),
      curElem = jQuery( elem ),
      props = {};

    // set position first, in-case top/left are set even on static elem
    if ( position === "static" ) {
      elem.style.position = "relative";
    }

    curOffset = curElem.offset();
    curCSSTop = jQuery.css( elem, "top" );
    curCSSLeft = jQuery.css( elem, "left" );
    calculatePosition = ( position === "absolute" || position === "fixed" ) &&
      jQuery.inArray("auto", [ curCSSTop, curCSSLeft ] ) > -1;

    // need to be able to calculate position if either top or left is auto and position is either absolute or fixed
    if ( calculatePosition ) {
      curPosition = curElem.position();
      curTop = curPosition.top;
      curLeft = curPosition.left;
    } else {
      curTop = parseFloat( curCSSTop ) || 0;
      curLeft = parseFloat( curCSSLeft ) || 0;
    }

    if ( jQuery.isFunction( options ) ) {
      options = options.call( elem, i, curOffset );
    }

    if ( options.top != null ) {
      props.top = ( options.top - curOffset.top ) + curTop;
    }
    if ( options.left != null ) {
      props.left = ( options.left - curOffset.left ) + curLeft;
    }

    if ( "using" in options ) {
      options.using.call( elem, props );
    } else {
      curElem.css( props );
    }
  }
};

jQuery.fn.extend({
  offset: function( options ) {
    if ( arguments.length ) {
      return options === undefined ?
        this :
        this.each(function( i ) {
          jQuery.offset.setOffset( this, options, i );
        });
    }

    var docElem, win,
      box = { top: 0, left: 0 },
      elem = this[ 0 ],
      doc = elem && elem.ownerDocument;

    if ( !doc ) {
      return;
    }

    docElem = doc.documentElement;

    // Make sure it's not a disconnected DOM node
    if ( !jQuery.contains( docElem, elem ) ) {
      return box;
    }

    // If we don't have gBCR, just use 0,0 rather than error
    // BlackBerry 5, iOS 3 (original iPhone)
    if ( typeof elem.getBoundingClientRect !== strundefined ) {
      box = elem.getBoundingClientRect();
    }
    win = getWindow( doc );
    return {
      top: box.top  + ( win.pageYOffset || docElem.scrollTop )  - ( docElem.clientTop  || 0 ),
      left: box.left + ( win.pageXOffset || docElem.scrollLeft ) - ( docElem.clientLeft || 0 )
    };
  },

  position: function() {
    if ( !this[ 0 ] ) {
      return;
    }

    var offsetParent, offset,
      parentOffset = { top: 0, left: 0 },
      elem = this[ 0 ];

    // fixed elements are offset from window (parentOffset = {top:0, left: 0}, because it is its only offset parent
    if ( jQuery.css( elem, "position" ) === "fixed" ) {
      // we assume that getBoundingClientRect is available when computed position is fixed
      offset = elem.getBoundingClientRect();
    } else {
      // Get *real* offsetParent
      offsetParent = this.offsetParent();

      // Get correct offsets
      offset = this.offset();
      if ( !jQuery.nodeName( offsetParent[ 0 ], "html" ) ) {
        parentOffset = offsetParent.offset();
      }

      // Add offsetParent borders
      parentOffset.top  += jQuery.css( offsetParent[ 0 ], "borderTopWidth", true );
      parentOffset.left += jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true );
    }

    // Subtract parent offsets and element margins
    // note: when an element has margin: auto the offsetLeft and marginLeft
    // are the same in Safari causing offset.left to incorrectly be 0
    return {
      top:  offset.top  - parentOffset.top - jQuery.css( elem, "marginTop", true ),
      left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true)
    };
  },

  offsetParent: function() {
    return this.map(function() {
      var offsetParent = this.offsetParent || docElem;

      while ( offsetParent && ( !jQuery.nodeName( offsetParent, "html" ) && jQuery.css( offsetParent, "position" ) === "static" ) ) {
        offsetParent = offsetParent.offsetParent;
      }
      return offsetParent || docElem;
    });
  }
});

// Create scrollLeft and scrollTop methods
jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
  var top = /Y/.test( prop );

  jQuery.fn[ method ] = function( val ) {
    return access( this, function( elem, method, val ) {
      var win = getWindow( elem );

      if ( val === undefined ) {
        return win ? (prop in win) ? win[ prop ] :
          win.document.documentElement[ method ] :
          elem[ method ];
      }

      if ( win ) {
        win.scrollTo(
          !top ? val : jQuery( win ).scrollLeft(),
          top ? val : jQuery( win ).scrollTop()
        );

      } else {
        elem[ method ] = val;
      }
    }, method, val, arguments.length, null );
  };
});

// Add the top/left cssHooks using jQuery.fn.position
// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
// getComputedStyle returns percent when specified for top/left/bottom/right
// rather than make the css module depend on the offset module, we just check for it here
jQuery.each( [ "top", "left" ], function( i, prop ) {
  jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
    function( elem, computed ) {
      if ( computed ) {
        computed = curCSS( elem, prop );
        // if curCSS returns percentage, fallback to offset
        return rnumnonpx.test( computed ) ?
          jQuery( elem ).position()[ prop ] + "px" :
          computed;
      }
    }
  );
});


// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
  jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name }, function( defaultExtra, funcName ) {
    // margin is only for outerHeight, outerWidth
    jQuery.fn[ funcName ] = function( margin, value ) {
      var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
        extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );

      return access( this, function( elem, type, value ) {
        var doc;

        if ( jQuery.isWindow( elem ) ) {
          // As of 5/8/2012 this will yield incorrect results for Mobile Safari, but there
          // isn't a whole lot we can do. See pull request at this URL for discussion:
          // https://github.com/jquery/jquery/pull/764
          return elem.document.documentElement[ "client" + name ];
        }

        // Get document width or height
        if ( elem.nodeType === 9 ) {
          doc = elem.documentElement;

          // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height], whichever is greatest
          // unfortunately, this causes bug #3838 in IE6/8 only, but there is currently no good, small way to fix it.
          return Math.max(
            elem.body[ "scroll" + name ], doc[ "scroll" + name ],
            elem.body[ "offset" + name ], doc[ "offset" + name ],
            doc[ "client" + name ]
          );
        }

        return value === undefined ?
          // Get width or height on the element, requesting but not forcing parseFloat
          jQuery.css( elem, type, extra ) :

          // Set width or height on the element
          jQuery.style( elem, type, value, extra );
      }, type, chainable ? margin : undefined, chainable, null );
    };
  });
});


// The number of elements contained in the matched element set
jQuery.fn.size = function() {
  return this.length;
};

jQuery.fn.andSelf = jQuery.fn.addBack;




// Register as a named AMD module, since jQuery can be concatenated with other
// files that may use define, but not via a proper concatenation script that
// understands anonymous AMD modules. A named AMD is safest and most robust
// way to register. Lowercase jquery is used because AMD module names are
// derived from file names, and jQuery is normally delivered in a lowercase
// file name. Do this after creating the global so that if an AMD module wants
// to call noConflict to hide this version of jQuery, it will work.

// Note that for maximum portability, libraries that are not jQuery should
// declare themselves as anonymous modules, and avoid setting a global if an
// AMD loader is present. jQuery is a special case. For more information, see
// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon

if ( typeof define === "function" && define.amd ) {
  define( "jquery", [], function() {
    return jQuery;
  });
}




var
  // Map over jQuery in case of overwrite
  _jQuery = window.jQuery,

  // Map over the $ in case of overwrite
  _$ = window.$;

jQuery.noConflict = function( deep ) {
  if ( window.$ === jQuery ) {
    window.$ = _$;
  }

  if ( deep && window.jQuery === jQuery ) {
    window.jQuery = _jQuery;
  }

  return jQuery;
};

// Expose jQuery and $ identifiers, even in
// AMD (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
// and CommonJS for browser emulators (#13566)
if ( typeof noGlobal === strundefined ) {
  window.jQuery = window.$ = jQuery;
}




return jQuery;

}));

//     Underscore.js 1.6.0
//     http://underscorejs.org
//     (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
//     Underscore may be freely distributed under the MIT license.

(function() {

  // Baseline setup
  // --------------

  // Establish the root object, `window` in the browser, or `exports` on the server.
  var root = this;

  // Save the previous value of the `_` variable.
  var previousUnderscore = root._;

  // Establish the object that gets returned to break out of a loop iteration.
  var breaker = {};

  // Save bytes in the minified (but not gzipped) version:
  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;

  // Create quick reference variables for speed access to core prototypes.
  var
    push             = ArrayProto.push,
    slice            = ArrayProto.slice,
    concat           = ArrayProto.concat,
    toString         = ObjProto.toString,
    hasOwnProperty   = ObjProto.hasOwnProperty;

  // All **ECMAScript 5** native function implementations that we hope to use
  // are declared here.
  var
    nativeForEach      = ArrayProto.forEach,
    nativeMap          = ArrayProto.map,
    nativeReduce       = ArrayProto.reduce,
    nativeReduceRight  = ArrayProto.reduceRight,
    nativeFilter       = ArrayProto.filter,
    nativeEvery        = ArrayProto.every,
    nativeSome         = ArrayProto.some,
    nativeIndexOf      = ArrayProto.indexOf,
    nativeLastIndexOf  = ArrayProto.lastIndexOf,
    nativeIsArray      = Array.isArray,
    nativeKeys         = Object.keys,
    nativeBind         = FuncProto.bind;

  // Create a safe reference to the Underscore object for use below.
  var _ = function(obj) {
    if (obj instanceof _) return obj;
    if (!(this instanceof _)) return new _(obj);
    this._wrapped = obj;
  };

  // Export the Underscore object for **Node.js**, with
  // backwards-compatibility for the old `require()` API. If we're in
  // the browser, add `_` as a global object via a string identifier,
  // for Closure Compiler "advanced" mode.
  if (typeof exports !== 'undefined') {
    if (typeof module !== 'undefined' && module.exports) {
      exports = module.exports = _;
    }
    exports._ = _;
  } else {
    root._ = _;
  }

  // Current version.
  _.VERSION = '1.6.0';

  // Collection Functions
  // --------------------

  // The cornerstone, an `each` implementation, aka `forEach`.
  // Handles objects with the built-in `forEach`, arrays, and raw objects.
  // Delegates to **ECMAScript 5**'s native `forEach` if available.
  var each = _.each = _.forEach = function(obj, iterator, context) {
    if (obj == null) return obj;
    if (nativeForEach && obj.forEach === nativeForEach) {
      obj.forEach(iterator, context);
    } else if (obj.length === +obj.length) {
      for (var i = 0, length = obj.length; i < length; i++) {
        if (iterator.call(context, obj[i], i, obj) === breaker) return;
      }
    } else {
      var keys = _.keys(obj);
      for (var i = 0, length = keys.length; i < length; i++) {
        if (iterator.call(context, obj[keys[i]], keys[i], obj) === breaker) return;
      }
    }
    return obj;
  };

  // Return the results of applying the iterator to each element.
  // Delegates to **ECMAScript 5**'s native `map` if available.
  _.map = _.collect = function(obj, iterator, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
    each(obj, function(value, index, list) {
      results.push(iterator.call(context, value, index, list));
    });
    return results;
  };

  var reduceError = 'Reduce of empty array with no initial value';

  // **Reduce** builds up a single result from a list of values, aka `inject`,
  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
    var initial = arguments.length > 2;
    if (obj == null) obj = [];
    if (nativeReduce && obj.reduce === nativeReduce) {
      if (context) iterator = _.bind(iterator, context);
      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
    }
    each(obj, function(value, index, list) {
      if (!initial) {
        memo = value;
        initial = true;
      } else {
        memo = iterator.call(context, memo, value, index, list);
      }
    });
    if (!initial) throw new TypeError(reduceError);
    return memo;
  };

  // The right-associative version of reduce, also known as `foldr`.
  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
    var initial = arguments.length > 2;
    if (obj == null) obj = [];
    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
      if (context) iterator = _.bind(iterator, context);
      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
    }
    var length = obj.length;
    if (length !== +length) {
      var keys = _.keys(obj);
      length = keys.length;
    }
    each(obj, function(value, index, list) {
      index = keys ? keys[--length] : --length;
      if (!initial) {
        memo = obj[index];
        initial = true;
      } else {
        memo = iterator.call(context, memo, obj[index], index, list);
      }
    });
    if (!initial) throw new TypeError(reduceError);
    return memo;
  };

  // Return the first value which passes a truth test. Aliased as `detect`.
  _.find = _.detect = function(obj, predicate, context) {
    var result;
    any(obj, function(value, index, list) {
      if (predicate.call(context, value, index, list)) {
        result = value;
        return true;
      }
    });
    return result;
  };

  // Return all the elements that pass a truth test.
  // Delegates to **ECMAScript 5**'s native `filter` if available.
  // Aliased as `select`.
  _.filter = _.select = function(obj, predicate, context) {
    var results = [];
    if (obj == null) return results;
    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(predicate, context);
    each(obj, function(value, index, list) {
      if (predicate.call(context, value, index, list)) results.push(value);
    });
    return results;
  };

  // Return all the elements for which a truth test fails.
  _.reject = function(obj, predicate, context) {
    return _.filter(obj, function(value, index, list) {
      return !predicate.call(context, value, index, list);
    }, context);
  };

  // Determine whether all of the elements match a truth test.
  // Delegates to **ECMAScript 5**'s native `every` if available.
  // Aliased as `all`.
  _.every = _.all = function(obj, predicate, context) {
    predicate || (predicate = _.identity);
    var result = true;
    if (obj == null) return result;
    if (nativeEvery && obj.every === nativeEvery) return obj.every(predicate, context);
    each(obj, function(value, index, list) {
      if (!(result = result && predicate.call(context, value, index, list))) return breaker;
    });
    return !!result;
  };

  // Determine if at least one element in the object matches a truth test.
  // Delegates to **ECMAScript 5**'s native `some` if available.
  // Aliased as `any`.
  var any = _.some = _.any = function(obj, predicate, context) {
    predicate || (predicate = _.identity);
    var result = false;
    if (obj == null) return result;
    if (nativeSome && obj.some === nativeSome) return obj.some(predicate, context);
    each(obj, function(value, index, list) {
      if (result || (result = predicate.call(context, value, index, list))) return breaker;
    });
    return !!result;
  };

  // Determine if the array or object contains a given value (using `===`).
  // Aliased as `include`.
  _.contains = _.include = function(obj, target) {
    if (obj == null) return false;
    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
    return any(obj, function(value) {
      return value === target;
    });
  };

  // Invoke a method (with arguments) on every item in a collection.
  _.invoke = function(obj, method) {
    var args = slice.call(arguments, 2);
    var isFunc = _.isFunction(method);
    return _.map(obj, function(value) {
      return (isFunc ? method : value[method]).apply(value, args);
    });
  };

  // Convenience version of a common use case of `map`: fetching a property.
  _.pluck = function(obj, key) {
    return _.map(obj, _.property(key));
  };

  // Convenience version of a common use case of `filter`: selecting only objects
  // containing specific `key:value` pairs.
  _.where = function(obj, attrs) {
    return _.filter(obj, _.matches(attrs));
  };

  // Convenience version of a common use case of `find`: getting the first object
  // containing specific `key:value` pairs.
  _.findWhere = function(obj, attrs) {
    return _.find(obj, _.matches(attrs));
  };

  // Return the maximum element or (element-based computation).
  // Can't optimize arrays of integers longer than 65,535 elements.
  // See [WebKit Bug 80797](https://bugs.webkit.org/show_bug.cgi?id=80797)
  _.max = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
      return Math.max.apply(Math, obj);
    }
    var result = -Infinity, lastComputed = -Infinity;
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      if (computed > lastComputed) {
        result = value;
        lastComputed = computed;
      }
    });
    return result;
  };

  // Return the minimum element (or element-based computation).
  _.min = function(obj, iterator, context) {
    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
      return Math.min.apply(Math, obj);
    }
    var result = Infinity, lastComputed = Infinity;
    each(obj, function(value, index, list) {
      var computed = iterator ? iterator.call(context, value, index, list) : value;
      if (computed < lastComputed) {
        result = value;
        lastComputed = computed;
      }
    });
    return result;
  };

  // Shuffle an array, using the modern version of the
  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
  _.shuffle = function(obj) {
    var rand;
    var index = 0;
    var shuffled = [];
    each(obj, function(value) {
      rand = _.random(index++);
      shuffled[index - 1] = shuffled[rand];
      shuffled[rand] = value;
    });
    return shuffled;
  };

  // Sample **n** random values from a collection.
  // If **n** is not specified, returns a single random element.
  // The internal `guard` argument allows it to work with `map`.
  _.sample = function(obj, n, guard) {
    if (n == null || guard) {
      if (obj.length !== +obj.length) obj = _.values(obj);
      return obj[_.random(obj.length - 1)];
    }
    return _.shuffle(obj).slice(0, Math.max(0, n));
  };

  // An internal function to generate lookup iterators.
  var lookupIterator = function(value) {
    if (value == null) return _.identity;
    if (_.isFunction(value)) return value;
    return _.property(value);
  };

  // Sort the object's values by a criterion produced by an iterator.
  _.sortBy = function(obj, iterator, context) {
    iterator = lookupIterator(iterator);
    return _.pluck(_.map(obj, function(value, index, list) {
      return {
        value: value,
        index: index,
        criteria: iterator.call(context, value, index, list)
      };
    }).sort(function(left, right) {
      var a = left.criteria;
      var b = right.criteria;
      if (a !== b) {
        if (a > b || a === void 0) return 1;
        if (a < b || b === void 0) return -1;
      }
      return left.index - right.index;
    }), 'value');
  };

  // An internal function used for aggregate "group by" operations.
  var group = function(behavior) {
    return function(obj, iterator, context) {
      var result = {};
      iterator = lookupIterator(iterator);
      each(obj, function(value, index) {
        var key = iterator.call(context, value, index, obj);
        behavior(result, key, value);
      });
      return result;
    };
  };

  // Groups the object's values by a criterion. Pass either a string attribute
  // to group by, or a function that returns the criterion.
  _.groupBy = group(function(result, key, value) {
    _.has(result, key) ? result[key].push(value) : result[key] = [value];
  });

  // Indexes the object's values by a criterion, similar to `groupBy`, but for
  // when you know that your index values will be unique.
  _.indexBy = group(function(result, key, value) {
    result[key] = value;
  });

  // Counts instances of an object that group by a certain criterion. Pass
  // either a string attribute to count by, or a function that returns the
  // criterion.
  _.countBy = group(function(result, key) {
    _.has(result, key) ? result[key]++ : result[key] = 1;
  });

  // Use a comparator function to figure out the smallest index at which
  // an object should be inserted so as to maintain order. Uses binary search.
  _.sortedIndex = function(array, obj, iterator, context) {
    iterator = lookupIterator(iterator);
    var value = iterator.call(context, obj);
    var low = 0, high = array.length;
    while (low < high) {
      var mid = (low + high) >>> 1;
      iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
    }
    return low;
  };

  // Safely create a real, live array from anything iterable.
  _.toArray = function(obj) {
    if (!obj) return [];
    if (_.isArray(obj)) return slice.call(obj);
    if (obj.length === +obj.length) return _.map(obj, _.identity);
    return _.values(obj);
  };

  // Return the number of elements in an object.
  _.size = function(obj) {
    if (obj == null) return 0;
    return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
  };

  // Array Functions
  // ---------------

  // Get the first element of an array. Passing **n** will return the first N
  // values in the array. Aliased as `head` and `take`. The **guard** check
  // allows it to work with `_.map`.
  _.first = _.head = _.take = function(array, n, guard) {
    if (array == null) return void 0;
    if ((n == null) || guard) return array[0];
    if (n < 0) return [];
    return slice.call(array, 0, n);
  };

  // Returns everything but the last entry of the array. Especially useful on
  // the arguments object. Passing **n** will return all the values in
  // the array, excluding the last N. The **guard** check allows it to work with
  // `_.map`.
  _.initial = function(array, n, guard) {
    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
  };

  // Get the last element of an array. Passing **n** will return the last N
  // values in the array. The **guard** check allows it to work with `_.map`.
  _.last = function(array, n, guard) {
    if (array == null) return void 0;
    if ((n == null) || guard) return array[array.length - 1];
    return slice.call(array, Math.max(array.length - n, 0));
  };

  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
  // Especially useful on the arguments object. Passing an **n** will return
  // the rest N values in the array. The **guard**
  // check allows it to work with `_.map`.
  _.rest = _.tail = _.drop = function(array, n, guard) {
    return slice.call(array, (n == null) || guard ? 1 : n);
  };

  // Trim out all falsy values from an array.
  _.compact = function(array) {
    return _.filter(array, _.identity);
  };

  // Internal implementation of a recursive `flatten` function.
  var flatten = function(input, shallow, strict, output) {
    if (shallow && _.every(input, _.isArray)) {
      return concat.apply(output, input);
    }
    for (var i = 0, length = input.length; i < length; i++) {
      var value = input[i];
      if (!_.isArray(value) && !_.isArguments(value)) {
        if (!strict) output.push(value);
      } else if (shallow) {
        push.apply(output, value);
      } else {
        flatten(value, shallow, strict, output);
      }
    }
    return output;
  };

  // Flatten out an array, either recursively (by default), or just one level.
  _.flatten = function(array, shallow) {
    return flatten(array, shallow, false, []);
  };

  // Return a version of the array that does not contain the specified value(s).
  _.without = function(array) {
    return _.difference(array, slice.call(arguments, 1));
  };

  // Split an array into two arrays: one whose elements all satisfy the given
  // predicate, and one whose elements all do not satisfy the predicate.
  _.partition = function(obj, predicate, context) {
    predicate = lookupIterator(predicate);
    var pass = [], fail = [];
    each(obj, function(elem) {
      (predicate.call(context, elem) ? pass : fail).push(elem);
    });
    return [pass, fail];
  };

  // Produce a duplicate-free version of the array. If the array has already
  // been sorted, you have the option of using a faster algorithm.
  // Aliased as `unique`.
  _.uniq = _.unique = function(array, isSorted, iterator, context) {
    if (array == null) return [];
    if (_.isFunction(isSorted)) {
      context = iterator;
      iterator = isSorted;
      isSorted = false;
    }
    var result = [];
    var seen = [];
    for (var i = 0, length = array.length; i < length; i++) {
      var value = array[i];
      if (iterator) value = iterator.call(context, value, i, array);
      if (isSorted ? (!i || seen !== value) : !_.contains(seen, value)) {
        if (isSorted) seen = value;
        else seen.push(value);
        result.push(array[i]);
      }
    }
    return result;
  };

  // Produce an array that contains the union: each distinct element from all of
  // the passed-in arrays.
  _.union = function() {
    return _.uniq(flatten(arguments, true, true, []));
  };

  // Produce an array that contains every item shared between all the
  // passed-in arrays.
  _.intersection = function(array) {
    var rest = slice.call(arguments, 1);
    return _.filter(_.uniq(array), function(item) {
      return _.every(rest, function(other) {
        return _.contains(other, item);
      });
    });
  };

  // Take the difference between one array and a number of other arrays.
  // Only the elements present in just the first array will remain.
  _.difference = function(array) {
    var rest = flatten(slice.call(arguments, 1), true, true, []);
    return _.filter(array, function(value){ return !_.contains(rest, value); });
  };

  // Zip together multiple lists into a single array -- elements that share
  // an index go together.
  _.zip = function() {
    var length = _.max(_.pluck(arguments, 'length').concat(0));
    var results = new Array(length);
    for (var i = 0; i < length; i++) {
      results[i] = _.pluck(arguments, '' + i);
    }
    return results;
  };

  // Converts lists into objects. Pass either a single array of `[key, value]`
  // pairs, or two parallel arrays of the same length -- one of keys, and one of
  // the corresponding values.
  _.object = function(list, values) {
    if (list == null) return {};
    var result = {};
    for (var i = 0, length = list.length; i < length; i++) {
      if (values) {
        result[list[i]] = values[i];
      } else {
        result[list[i][0]] = list[i][1];
      }
    }
    return result;
  };

  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
  // we need this function. Return the position of the first occurrence of an
  // item in an array, or -1 if the item is not included in the array.
  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
  // If the array is large and already in sort order, pass `true`
  // for **isSorted** to use binary search.
  _.indexOf = function(array, item, isSorted) {
    if (array == null) return -1;
    var i = 0, length = array.length;
    if (isSorted) {
      if (typeof isSorted == 'number') {
        i = (isSorted < 0 ? Math.max(0, length + isSorted) : isSorted);
      } else {
        i = _.sortedIndex(array, item);
        return array[i] === item ? i : -1;
      }
    }
    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
    for (; i < length; i++) if (array[i] === item) return i;
    return -1;
  };

  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
  _.lastIndexOf = function(array, item, from) {
    if (array == null) return -1;
    var hasIndex = from != null;
    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
      return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
    }
    var i = (hasIndex ? from : array.length);
    while (i--) if (array[i] === item) return i;
    return -1;
  };

  // Generate an integer Array containing an arithmetic progression. A port of
  // the native Python `range()` function. See
  // [the Python documentation](http://docs.python.org/library/functions.html#range).
  _.range = function(start, stop, step) {
    if (arguments.length <= 1) {
      stop = start || 0;
      start = 0;
    }
    step = arguments[2] || 1;

    var length = Math.max(Math.ceil((stop - start) / step), 0);
    var idx = 0;
    var range = new Array(length);

    while(idx < length) {
      range[idx++] = start;
      start += step;
    }

    return range;
  };

  // Function (ahem) Functions
  // ------------------

  // Reusable constructor function for prototype setting.
  var ctor = function(){};

  // Create a function bound to a given object (assigning `this`, and arguments,
  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
  // available.
  _.bind = function(func, context) {
    var args, bound;
    if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
    if (!_.isFunction(func)) throw new TypeError;
    args = slice.call(arguments, 2);
    return bound = function() {
      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
      ctor.prototype = func.prototype;
      var self = new ctor;
      ctor.prototype = null;
      var result = func.apply(self, args.concat(slice.call(arguments)));
      if (Object(result) === result) return result;
      return self;
    };
  };

  // Partially apply a function by creating a version that has had some of its
  // arguments pre-filled, without changing its dynamic `this` context. _ acts
  // as a placeholder, allowing any combination of arguments to be pre-filled.
  _.partial = function(func) {
    var boundArgs = slice.call(arguments, 1);
    return function() {
      var position = 0;
      var args = boundArgs.slice();
      for (var i = 0, length = args.length; i < length; i++) {
        if (args[i] === _) args[i] = arguments[position++];
      }
      while (position < arguments.length) args.push(arguments[position++]);
      return func.apply(this, args);
    };
  };

  // Bind a number of an object's methods to that object. Remaining arguments
  // are the method names to be bound. Useful for ensuring that all callbacks
  // defined on an object belong to it.
  _.bindAll = function(obj) {
    var funcs = slice.call(arguments, 1);
    if (funcs.length === 0) throw new Error('bindAll must be passed function names');
    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
    return obj;
  };

  // Memoize an expensive function by storing its results.
  _.memoize = function(func, hasher) {
    var memo = {};
    hasher || (hasher = _.identity);
    return function() {
      var key = hasher.apply(this, arguments);
      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
    };
  };

  // Delays a function for the given number of milliseconds, and then calls
  // it with the arguments supplied.
  _.delay = function(func, wait) {
    var args = slice.call(arguments, 2);
    return setTimeout(function(){ return func.apply(null, args); }, wait);
  };

  // Defers a function, scheduling it to run after the current call stack has
  // cleared.
  _.defer = function(func) {
    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
  };

  // Returns a function, that, when invoked, will only be triggered at most once
  // during a given window of time. Normally, the throttled function will run
  // as much as it can, without ever going more than once per `wait` duration;
  // but if you'd like to disable the execution on the leading edge, pass
  // `{leading: false}`. To disable execution on the trailing edge, ditto.
  _.throttle = function(func, wait, options) {
    var context, args, result;
    var timeout = null;
    var previous = 0;
    options || (options = {});
    var later = function() {
      previous = options.leading === false ? 0 : _.now();
      timeout = null;
      result = func.apply(context, args);
      context = args = null;
    };
    return function() {
      var now = _.now();
      if (!previous && options.leading === false) previous = now;
      var remaining = wait - (now - previous);
      context = this;
      args = arguments;
      if (remaining <= 0) {
        clearTimeout(timeout);
        timeout = null;
        previous = now;
        result = func.apply(context, args);
        context = args = null;
      } else if (!timeout && options.trailing !== false) {
        timeout = setTimeout(later, remaining);
      }
      return result;
    };
  };

  // Returns a function, that, as long as it continues to be invoked, will not
  // be triggered. The function will be called after it stops being called for
  // N milliseconds. If `immediate` is passed, trigger the function on the
  // leading edge, instead of the trailing.
  _.debounce = function(func, wait, immediate) {
    var timeout, args, context, timestamp, result;

    var later = function() {
      var last = _.now() - timestamp;
      if (last < wait) {
        timeout = setTimeout(later, wait - last);
      } else {
        timeout = null;
        if (!immediate) {
          result = func.apply(context, args);
          context = args = null;
        }
      }
    };

    return function() {
      context = this;
      args = arguments;
      timestamp = _.now();
      var callNow = immediate && !timeout;
      if (!timeout) {
        timeout = setTimeout(later, wait);
      }
      if (callNow) {
        result = func.apply(context, args);
        context = args = null;
      }

      return result;
    };
  };

  // Returns a function that will be executed at most one time, no matter how
  // often you call it. Useful for lazy initialization.
  _.once = function(func) {
    var ran = false, memo;
    return function() {
      if (ran) return memo;
      ran = true;
      memo = func.apply(this, arguments);
      func = null;
      return memo;
    };
  };

  // Returns the first function passed as an argument to the second,
  // allowing you to adjust arguments, run code before and after, and
  // conditionally execute the original function.
  _.wrap = function(func, wrapper) {
    return _.partial(wrapper, func);
  };

  // Returns a function that is the composition of a list of functions, each
  // consuming the return value of the function that follows.
  _.compose = function() {
    var funcs = arguments;
    return function() {
      var args = arguments;
      for (var i = funcs.length - 1; i >= 0; i--) {
        args = [funcs[i].apply(this, args)];
      }
      return args[0];
    };
  };

  // Returns a function that will only be executed after being called N times.
  _.after = function(times, func) {
    return function() {
      if (--times < 1) {
        return func.apply(this, arguments);
      }
    };
  };

  // Object Functions
  // ----------------

  // Retrieve the names of an object's properties.
  // Delegates to **ECMAScript 5**'s native `Object.keys`
  _.keys = function(obj) {
    if (!_.isObject(obj)) return [];
    if (nativeKeys) return nativeKeys(obj);
    var keys = [];
    for (var key in obj) if (_.has(obj, key)) keys.push(key);
    return keys;
  };

  // Retrieve the values of an object's properties.
  _.values = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var values = new Array(length);
    for (var i = 0; i < length; i++) {
      values[i] = obj[keys[i]];
    }
    return values;
  };

  // Convert an object into a list of `[key, value]` pairs.
  _.pairs = function(obj) {
    var keys = _.keys(obj);
    var length = keys.length;
    var pairs = new Array(length);
    for (var i = 0; i < length; i++) {
      pairs[i] = [keys[i], obj[keys[i]]];
    }
    return pairs;
  };

  // Invert the keys and values of an object. The values must be serializable.
  _.invert = function(obj) {
    var result = {};
    var keys = _.keys(obj);
    for (var i = 0, length = keys.length; i < length; i++) {
      result[obj[keys[i]]] = keys[i];
    }
    return result;
  };

  // Return a sorted list of the function names available on the object.
  // Aliased as `methods`
  _.functions = _.methods = function(obj) {
    var names = [];
    for (var key in obj) {
      if (_.isFunction(obj[key])) names.push(key);
    }
    return names.sort();
  };

  // Extend a given object with all the properties in passed-in object(s).
  _.extend = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      if (source) {
        for (var prop in source) {
          obj[prop] = source[prop];
        }
      }
    });
    return obj;
  };

  // Return a copy of the object only containing the whitelisted properties.
  _.pick = function(obj) {
    var copy = {};
    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
    each(keys, function(key) {
      if (key in obj) copy[key] = obj[key];
    });
    return copy;
  };

   // Return a copy of the object without the blacklisted properties.
  _.omit = function(obj) {
    var copy = {};
    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
    for (var key in obj) {
      if (!_.contains(keys, key)) copy[key] = obj[key];
    }
    return copy;
  };

  // Fill in a given object with default properties.
  _.defaults = function(obj) {
    each(slice.call(arguments, 1), function(source) {
      if (source) {
        for (var prop in source) {
          if (obj[prop] === void 0) obj[prop] = source[prop];
        }
      }
    });
    return obj;
  };

  // Create a (shallow-cloned) duplicate of an object.
  _.clone = function(obj) {
    if (!_.isObject(obj)) return obj;
    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
  };

  // Invokes interceptor with the obj, and then returns obj.
  // The primary purpose of this method is to "tap into" a method chain, in
  // order to perform operations on intermediate results within the chain.
  _.tap = function(obj, interceptor) {
    interceptor(obj);
    return obj;
  };

  // Internal recursive comparison function for `isEqual`.
  var eq = function(a, b, aStack, bStack) {
    // Identical objects are equal. `0 === -0`, but they aren't identical.
    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
    if (a === b) return a !== 0 || 1 / a == 1 / b;
    // A strict comparison is necessary because `null == undefined`.
    if (a == null || b == null) return a === b;
    // Unwrap any wrapped objects.
    if (a instanceof _) a = a._wrapped;
    if (b instanceof _) b = b._wrapped;
    // Compare `[[Class]]` names.
    var className = toString.call(a);
    if (className != toString.call(b)) return false;
    switch (className) {
      // Strings, numbers, dates, and booleans are compared by value.
      case '[object String]':
        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
        // equivalent to `new String("5")`.
        return a == String(b);
      case '[object Number]':
        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
        // other numeric values.
        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
      case '[object Date]':
      case '[object Boolean]':
        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
        // millisecond representations. Note that invalid dates with millisecond representations
        // of `NaN` are not equivalent.
        return +a == +b;
      // RegExps are compared by their source patterns and flags.
      case '[object RegExp]':
        return a.source == b.source &&
               a.global == b.global &&
               a.multiline == b.multiline &&
               a.ignoreCase == b.ignoreCase;
    }
    if (typeof a != 'object' || typeof b != 'object') return false;
    // Assume equality for cyclic structures. The algorithm for detecting cyclic
    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
    var length = aStack.length;
    while (length--) {
      // Linear search. Performance is inversely proportional to the number of
      // unique nested structures.
      if (aStack[length] == a) return bStack[length] == b;
    }
    // Objects with different constructors are not equivalent, but `Object`s
    // from different frames are.
    var aCtor = a.constructor, bCtor = b.constructor;
    if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
                             _.isFunction(bCtor) && (bCtor instanceof bCtor))
                        && ('constructor' in a && 'constructor' in b)) {
      return false;
    }
    // Add the first object to the stack of traversed objects.
    aStack.push(a);
    bStack.push(b);
    var size = 0, result = true;
    // Recursively compare objects and arrays.
    if (className == '[object Array]') {
      // Compare array lengths to determine if a deep comparison is necessary.
      size = a.length;
      result = size == b.length;
      if (result) {
        // Deep compare the contents, ignoring non-numeric properties.
        while (size--) {
          if (!(result = eq(a[size], b[size], aStack, bStack))) break;
        }
      }
    } else {
      // Deep compare objects.
      for (var key in a) {
        if (_.has(a, key)) {
          // Count the expected number of properties.
          size++;
          // Deep compare each member.
          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
        }
      }
      // Ensure that both objects contain the same number of properties.
      if (result) {
        for (key in b) {
          if (_.has(b, key) && !(size--)) break;
        }
        result = !size;
      }
    }
    // Remove the first object from the stack of traversed objects.
    aStack.pop();
    bStack.pop();
    return result;
  };

  // Perform a deep comparison to check if two objects are equal.
  _.isEqual = function(a, b) {
    return eq(a, b, [], []);
  };

  // Is a given array, string, or object empty?
  // An "empty" object has no enumerable own-properties.
  _.isEmpty = function(obj) {
    if (obj == null) return true;
    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
    for (var key in obj) if (_.has(obj, key)) return false;
    return true;
  };

  // Is a given value a DOM element?
  _.isElement = function(obj) {
    return !!(obj && obj.nodeType === 1);
  };

  // Is a given value an array?
  // Delegates to ECMA5's native Array.isArray
  _.isArray = nativeIsArray || function(obj) {
    return toString.call(obj) == '[object Array]';
  };

  // Is a given variable an object?
  _.isObject = function(obj) {
    return obj === Object(obj);
  };

  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
  each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
    _['is' + name] = function(obj) {
      return toString.call(obj) == '[object ' + name + ']';
    };
  });

  // Define a fallback version of the method in browsers (ahem, IE), where
  // there isn't any inspectable "Arguments" type.
  if (!_.isArguments(arguments)) {
    _.isArguments = function(obj) {
      return !!(obj && _.has(obj, 'callee'));
    };
  }

  // Optimize `isFunction` if appropriate.
  if (typeof (/./) !== 'function') {
    _.isFunction = function(obj) {
      return typeof obj === 'function';
    };
  }

  // Is a given object a finite number?
  _.isFinite = function(obj) {
    return isFinite(obj) && !isNaN(parseFloat(obj));
  };

  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
  _.isNaN = function(obj) {
    return _.isNumber(obj) && obj != +obj;
  };

  // Is a given value a boolean?
  _.isBoolean = function(obj) {
    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
  };

  // Is a given value equal to null?
  _.isNull = function(obj) {
    return obj === null;
  };

  // Is a given variable undefined?
  _.isUndefined = function(obj) {
    return obj === void 0;
  };

  // Shortcut function for checking if an object has a given property directly
  // on itself (in other words, not on a prototype).
  _.has = function(obj, key) {
    return hasOwnProperty.call(obj, key);
  };

  // Utility Functions
  // -----------------

  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
  // previous owner. Returns a reference to the Underscore object.
  _.noConflict = function() {
    root._ = previousUnderscore;
    return this;
  };

  // Keep the identity function around for default iterators.
  _.identity = function(value) {
    return value;
  };

  _.constant = function(value) {
    return function () {
      return value;
    };
  };

  _.property = function(key) {
    return function(obj) {
      return obj[key];
    };
  };

  // Returns a predicate for checking whether an object has a given set of `key:value` pairs.
  _.matches = function(attrs) {
    return function(obj) {
      if (obj === attrs) return true; //avoid comparing an object to itself.
      for (var key in attrs) {
        if (attrs[key] !== obj[key])
          return false;
      }
      return true;
    }
  };

  // Run a function **n** times.
  _.times = function(n, iterator, context) {
    var accum = Array(Math.max(0, n));
    for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
    return accum;
  };

  // Return a random integer between min and max (inclusive).
  _.random = function(min, max) {
    if (max == null) {
      max = min;
      min = 0;
    }
    return min + Math.floor(Math.random() * (max - min + 1));
  };

  // A (possibly faster) way to get the current timestamp as an integer.
  _.now = Date.now || function() { return new Date().getTime(); };

  // List of HTML entities for escaping.
  var entityMap = {
    escape: {
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      '"': '&quot;',
      "'": '&#x27;'
    }
  };
  entityMap.unescape = _.invert(entityMap.escape);

  // Regexes containing the keys and values listed immediately above.
  var entityRegexes = {
    escape:   new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
    unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
  };

  // Functions for escaping and unescaping strings to/from HTML interpolation.
  _.each(['escape', 'unescape'], function(method) {
    _[method] = function(string) {
      if (string == null) return '';
      return ('' + string).replace(entityRegexes[method], function(match) {
        return entityMap[method][match];
      });
    };
  });

  // If the value of the named `property` is a function then invoke it with the
  // `object` as context; otherwise, return it.
  _.result = function(object, property) {
    if (object == null) return void 0;
    var value = object[property];
    return _.isFunction(value) ? value.call(object) : value;
  };

  // Add your own custom functions to the Underscore object.
  _.mixin = function(obj) {
    each(_.functions(obj), function(name) {
      var func = _[name] = obj[name];
      _.prototype[name] = function() {
        var args = [this._wrapped];
        push.apply(args, arguments);
        return result.call(this, func.apply(_, args));
      };
    });
  };

  // Generate a unique integer id (unique within the entire client session).
  // Useful for temporary DOM ids.
  var idCounter = 0;
  _.uniqueId = function(prefix) {
    var id = ++idCounter + '';
    return prefix ? prefix + id : id;
  };

  // By default, Underscore uses ERB-style template delimiters, change the
  // following template settings to use alternative delimiters.
  _.templateSettings = {
    evaluate    : /<%([\s\S]+?)%>/g,
    interpolate : /<%=([\s\S]+?)%>/g,
    escape      : /<%-([\s\S]+?)%>/g
  };

  // When customizing `templateSettings`, if you don't want to define an
  // interpolation, evaluation or escaping regex, we need one that is
  // guaranteed not to match.
  var noMatch = /(.)^/;

  // Certain characters need to be escaped so that they can be put into a
  // string literal.
  var escapes = {
    "'":      "'",
    '\\':     '\\',
    '\r':     'r',
    '\n':     'n',
    '\t':     't',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;

  // JavaScript micro-templating, similar to John Resig's implementation.
  // Underscore templating handles arbitrary delimiters, preserves whitespace,
  // and correctly escapes quotes within interpolated code.
  _.template = function(text, data, settings) {
    var render;
    settings = _.defaults({}, settings, _.templateSettings);

    // Combine delimiters into one regular expression via alternation.
    var matcher = new RegExp([
      (settings.escape || noMatch).source,
      (settings.interpolate || noMatch).source,
      (settings.evaluate || noMatch).source
    ].join('|') + '|$', 'g');

    // Compile the template source, escaping string literals appropriately.
    var index = 0;
    var source = "__p+='";
    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
      source += text.slice(index, offset)
        .replace(escaper, function(match) { return '\\' + escapes[match]; });

      if (escape) {
        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
      }
      if (interpolate) {
        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
      }
      if (evaluate) {
        source += "';\n" + evaluate + "\n__p+='";
      }
      index = offset + match.length;
      return match;
    });
    source += "';\n";

    // If a variable is not specified, place data values in local scope.
    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';

    source = "var __t,__p='',__j=Array.prototype.join," +
      "print=function(){__p+=__j.call(arguments,'');};\n" +
      source + "return __p;\n";

    try {
      render = new Function(settings.variable || 'obj', '_', source);
    } catch (e) {
      e.source = source;
      throw e;
    }

    if (data) return render(data, _);
    var template = function(data) {
      return render.call(this, data, _);
    };

    // Provide the compiled function source as a convenience for precompilation.
    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';

    return template;
  };

  // Add a "chain" function, which will delegate to the wrapper.
  _.chain = function(obj) {
    return _(obj).chain();
  };

  // OOP
  // ---------------
  // If Underscore is called as a function, it returns a wrapped object that
  // can be used OO-style. This wrapper holds altered versions of all the
  // underscore functions. Wrapped objects may be chained.

  // Helper function to continue chaining intermediate results.
  var result = function(obj) {
    return this._chain ? _(obj).chain() : obj;
  };

  // Add all of the Underscore functions to the wrapper object.
  _.mixin(_);

  // Add all mutator Array functions to the wrapper.
  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      var obj = this._wrapped;
      method.apply(obj, arguments);
      if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
      return result.call(this, obj);
    };
  });

  // Add all accessor Array functions to the wrapper.
  each(['concat', 'join', 'slice'], function(name) {
    var method = ArrayProto[name];
    _.prototype[name] = function() {
      return result.call(this, method.apply(this._wrapped, arguments));
    };
  });

  _.extend(_.prototype, {

    // Start chaining a wrapped Underscore object.
    chain: function() {
      this._chain = true;
      return this;
    },

    // Extracts the result from a wrapped and chained object.
    value: function() {
      return this._wrapped;
    }

  });

  // AMD registration happens at the end for compatibility with AMD loaders
  // that may not enforce next-turn semantics on modules. Even though general
  // practice for AMD registration is to be anonymous, underscore registers
  // as a named module because, like jQuery, it is a base library that is
  // popular enough to be bundled in a third party lib, but not be part of
  // an AMD load request. Those cases could generate an error when an
  // anonymous define() is called outside of a loader request.
  if (typeof define === 'function' && define.amd) {
    define('underscore', [], function() {
      return _;
    });
  }
}).call(this);
//     Backbone.js 1.1.2

//     (c) 2010-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
//     Backbone may be freely distributed under the MIT license.
//     For all details and documentation:
//     http://backbonejs.org

(function(root, factory) {

  // Set up Backbone appropriately for the environment. Start with AMD.
  if (typeof define === 'function' && define.amd) {
    define(['underscore', 'jquery', 'exports'], function(_, $, exports) {
      // Export global even in AMD case in case this script is loaded with
      // others that may still expect a global Backbone.
      root.Backbone = factory(root, exports, _, $);
    });

  // Next for Node.js or CommonJS. jQuery may not be needed as a module.
  } else if (typeof exports !== 'undefined') {
    var _ = require('underscore');
    factory(root, exports, _);

  // Finally, as a browser global.
  } else {
    root.Backbone = factory(root, {}, root._, (root.jQuery || root.Zepto || root.ender || root.$));
  }

}(this, function(root, Backbone, _, $) {

  // Initial Setup
  // -------------

  // Save the previous value of the `Backbone` variable, so that it can be
  // restored later on, if `noConflict` is used.
  var previousBackbone = root.Backbone;

  // Create local references to array methods we'll want to use later.
  var array = [];
  var push = array.push;
  var slice = array.slice;
  var splice = array.splice;

  // Current version of the library. Keep in sync with `package.json`.
  Backbone.VERSION = '1.1.2';

  // For Backbone's purposes, jQuery, Zepto, Ender, or My Library (kidding) owns
  // the `$` variable.
  Backbone.$ = $;

  // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
  // to its previous owner. Returns a reference to this Backbone object.
  Backbone.noConflict = function() {
    root.Backbone = previousBackbone;
    return this;
  };

  // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
  // will fake `"PATCH"`, `"PUT"` and `"DELETE"` requests via the `_method` parameter and
  // set a `X-Http-Method-Override` header.
  Backbone.emulateHTTP = false;

  // Turn on `emulateJSON` to support legacy servers that can't deal with direct
  // `application/json` requests ... will encode the body as
  // `application/x-www-form-urlencoded` instead and will send the model in a
  // form param named `model`.
  Backbone.emulateJSON = false;

  // Backbone.Events
  // ---------------

  // A module that can be mixed in to *any object* in order to provide it with
  // custom events. You may bind with `on` or remove with `off` callback
  // functions to an event; `trigger`-ing an event fires all callbacks in
  // succession.
  //
  //     var object = {};
  //     _.extend(object, Backbone.Events);
  //     object.on('expand', function(){ alert('expanded'); });
  //     object.trigger('expand');
  //
  var Events = Backbone.Events = {

    // Bind an event to a `callback` function. Passing `"all"` will bind
    // the callback to all events fired.
    on: function(name, callback, context) {
      if (!eventsApi(this, 'on', name, [callback, context]) || !callback) return this;
      this._events || (this._events = {});
      var events = this._events[name] || (this._events[name] = []);
      events.push({callback: callback, context: context, ctx: context || this});
      return this;
    },

    // Bind an event to only be triggered a single time. After the first time
    // the callback is invoked, it will be removed.
    once: function(name, callback, context) {
      if (!eventsApi(this, 'once', name, [callback, context]) || !callback) return this;
      var self = this;
      var once = _.once(function() {
        self.off(name, once);
        callback.apply(this, arguments);
      });
      once._callback = callback;
      return this.on(name, once, context);
    },

    // Remove one or many callbacks. If `context` is null, removes all
    // callbacks with that function. If `callback` is null, removes all
    // callbacks for the event. If `name` is null, removes all bound
    // callbacks for all events.
    off: function(name, callback, context) {
      var retain, ev, events, names, i, l, j, k;
      if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
      if (!name && !callback && !context) {
        this._events = void 0;
        return this;
      }
      names = name ? [name] : _.keys(this._events);
      for (i = 0, l = names.length; i < l; i++) {
        name = names[i];
        if (events = this._events[name]) {
          this._events[name] = retain = [];
          if (callback || context) {
            for (j = 0, k = events.length; j < k; j++) {
              ev = events[j];
              if ((callback && callback !== ev.callback && callback !== ev.callback._callback) ||
                  (context && context !== ev.context)) {
                retain.push(ev);
              }
            }
          }
          if (!retain.length) delete this._events[name];
        }
      }

      return this;
    },

    // Trigger one or many events, firing all bound callbacks. Callbacks are
    // passed the same arguments as `trigger` is, apart from the event name
    // (unless you're listening on `"all"`, which will cause your callback to
    // receive the true name of the event as the first argument).
    trigger: function(name) {
      if (!this._events) return this;
      var args = slice.call(arguments, 1);
      if (!eventsApi(this, 'trigger', name, args)) return this;
      var events = this._events[name];
      var allEvents = this._events.all;
      if (events) triggerEvents(events, args);
      if (allEvents) triggerEvents(allEvents, arguments);
      return this;
    },

    // Tell this object to stop listening to either specific events ... or
    // to every object it's currently listening to.
    stopListening: function(obj, name, callback) {
      var listeningTo = this._listeningTo;
      if (!listeningTo) return this;
      var remove = !name && !callback;
      if (!callback && typeof name === 'object') callback = this;
      if (obj) (listeningTo = {})[obj._listenId] = obj;
      for (var id in listeningTo) {
        obj = listeningTo[id];
        obj.off(name, callback, this);
        if (remove || _.isEmpty(obj._events)) delete this._listeningTo[id];
      }
      return this;
    }

  };

  // Regular expression used to split event strings.
  var eventSplitter = /\s+/;

  // Implement fancy features of the Events API such as multiple event
  // names `"change blur"` and jQuery-style event maps `{change: action}`
  // in terms of the existing API.
  var eventsApi = function(obj, action, name, rest) {
    if (!name) return true;

    // Handle event maps.
    if (typeof name === 'object') {
      for (var key in name) {
        obj[action].apply(obj, [key, name[key]].concat(rest));
      }
      return false;
    }

    // Handle space separated event names.
    if (eventSplitter.test(name)) {
      var names = name.split(eventSplitter);
      for (var i = 0, l = names.length; i < l; i++) {
        obj[action].apply(obj, [names[i]].concat(rest));
      }
      return false;
    }

    return true;
  };

  // A difficult-to-believe, but optimized internal dispatch function for
  // triggering events. Tries to keep the usual cases speedy (most internal
  // Backbone events have 3 arguments).
  var triggerEvents = function(events, args) {
    var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2];
    switch (args.length) {
      case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return;
      case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return;
      case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return;
      case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return;
      default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args); return;
    }
  };

  var listenMethods = {listenTo: 'on', listenToOnce: 'once'};

  // Inversion-of-control versions of `on` and `once`. Tell *this* object to
  // listen to an event in another object ... keeping track of what it's
  // listening to.
  _.each(listenMethods, function(implementation, method) {
    Events[method] = function(obj, name, callback) {
      var listeningTo = this._listeningTo || (this._listeningTo = {});
      var id = obj._listenId || (obj._listenId = _.uniqueId('l'));
      listeningTo[id] = obj;
      if (!callback && typeof name === 'object') callback = this;
      obj[implementation](name, callback, this);
      return this;
    };
  });

  // Aliases for backwards compatibility.
  Events.bind   = Events.on;
  Events.unbind = Events.off;

  // Allow the `Backbone` object to serve as a global event bus, for folks who
  // want global "pubsub" in a convenient place.
  _.extend(Backbone, Events);

  // Backbone.Model
  // --------------

  // Backbone **Models** are the basic data object in the framework --
  // frequently representing a row in a table in a database on your server.
  // A discrete chunk of data and a bunch of useful, related methods for
  // performing computations and transformations on that data.

  // Create a new model with the specified attributes. A client id (`cid`)
  // is automatically generated and assigned for you.
  var Model = Backbone.Model = function(attributes, options) {
    var attrs = attributes || {};
    options || (options = {});
    this.cid = _.uniqueId('c');
    this.attributes = {};
    if (options.collection) this.collection = options.collection;
    if (options.parse) attrs = this.parse(attrs, options) || {};
    attrs = _.defaults({}, attrs, _.result(this, 'defaults'));
    this.set(attrs, options);
    this.changed = {};
    this.initialize.apply(this, arguments);
  };

  // Attach all inheritable methods to the Model prototype.
  _.extend(Model.prototype, Events, {

    // A hash of attributes whose current and previous value differ.
    changed: null,

    // The value returned during the last failed validation.
    validationError: null,

    // The default name for the JSON `id` attribute is `"id"`. MongoDB and
    // CouchDB users may want to set this to `"_id"`.
    idAttribute: 'id',

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // Return a copy of the model's `attributes` object.
    toJSON: function(options) {
      return _.clone(this.attributes);
    },

    // Proxy `Backbone.sync` by default -- but override this if you need
    // custom syncing semantics for *this* particular model.
    sync: function() {
      return Backbone.sync.apply(this, arguments);
    },

    // Get the value of an attribute.
    get: function(attr) {
      return this.attributes[attr];
    },

    // Get the HTML-escaped value of an attribute.
    escape: function(attr) {
      return _.escape(this.get(attr));
    },

    // Returns `true` if the attribute contains a value that is not null
    // or undefined.
    has: function(attr) {
      return this.get(attr) != null;
    },

    // Set a hash of model attributes on the object, firing `"change"`. This is
    // the core primitive operation of a model, updating the data and notifying
    // anyone who needs to know about the change in state. The heart of the beast.
    set: function(key, val, options) {
      var attr, attrs, unset, changes, silent, changing, prev, current;
      if (key == null) return this;

      // Handle both `"key", value` and `{key: value}` -style arguments.
      if (typeof key === 'object') {
        attrs = key;
        options = val;
      } else {
        (attrs = {})[key] = val;
      }

      options || (options = {});

      // Run validation.
      if (!this._validate(attrs, options)) return false;

      // Extract attributes and options.
      unset           = options.unset;
      silent          = options.silent;
      changes         = [];
      changing        = this._changing;
      this._changing  = true;

      if (!changing) {
        this._previousAttributes = _.clone(this.attributes);
        this.changed = {};
      }
      current = this.attributes, prev = this._previousAttributes;

      // Check for changes of `id`.
      if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];

      // For each `set` attribute, update or delete the current value.
      for (attr in attrs) {
        val = attrs[attr];
        if (!_.isEqual(current[attr], val)) changes.push(attr);
        if (!_.isEqual(prev[attr], val)) {
          this.changed[attr] = val;
        } else {
          delete this.changed[attr];
        }
        unset ? delete current[attr] : current[attr] = val;
      }

      // Trigger all relevant attribute changes.
      if (!silent) {
        if (changes.length) this._pending = options;
        for (var i = 0, l = changes.length; i < l; i++) {
          this.trigger('change:' + changes[i], this, current[changes[i]], options);
        }
      }

      // You might be wondering why there's a `while` loop here. Changes can
      // be recursively nested within `"change"` events.
      if (changing) return this;
      if (!silent) {
        while (this._pending) {
          options = this._pending;
          this._pending = false;
          this.trigger('change', this, options);
        }
      }
      this._pending = false;
      this._changing = false;
      return this;
    },

    // Remove an attribute from the model, firing `"change"`. `unset` is a noop
    // if the attribute doesn't exist.
    unset: function(attr, options) {
      return this.set(attr, void 0, _.extend({}, options, {unset: true}));
    },

    // Clear all attributes on the model, firing `"change"`.
    clear: function(options) {
      var attrs = {};
      for (var key in this.attributes) attrs[key] = void 0;
      return this.set(attrs, _.extend({}, options, {unset: true}));
    },

    // Determine if the model has changed since the last `"change"` event.
    // If you specify an attribute name, determine if that attribute has changed.
    hasChanged: function(attr) {
      if (attr == null) return !_.isEmpty(this.changed);
      return _.has(this.changed, attr);
    },

    // Return an object containing all the attributes that have changed, or
    // false if there are no changed attributes. Useful for determining what
    // parts of a view need to be updated and/or what attributes need to be
    // persisted to the server. Unset attributes will be set to undefined.
    // You can also pass an attributes object to diff against the model,
    // determining if there *would be* a change.
    changedAttributes: function(diff) {
      if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
      var val, changed = false;
      var old = this._changing ? this._previousAttributes : this.attributes;
      for (var attr in diff) {
        if (_.isEqual(old[attr], (val = diff[attr]))) continue;
        (changed || (changed = {}))[attr] = val;
      }
      return changed;
    },

    // Get the previous value of an attribute, recorded at the time the last
    // `"change"` event was fired.
    previous: function(attr) {
      if (attr == null || !this._previousAttributes) return null;
      return this._previousAttributes[attr];
    },

    // Get all of the attributes of the model at the time of the previous
    // `"change"` event.
    previousAttributes: function() {
      return _.clone(this._previousAttributes);
    },

    // Fetch the model from the server. If the server's representation of the
    // model differs from its current attributes, they will be overridden,
    // triggering a `"change"` event.
    fetch: function(options) {
      options = options ? _.clone(options) : {};
      if (options.parse === void 0) options.parse = true;
      var model = this;
      var success = options.success;
      options.success = function(resp) {
        if (!model.set(model.parse(resp, options), options)) return false;
        if (success) success(model, resp, options);
        model.trigger('sync', model, resp, options);
      };
      wrapError(this, options);
      return this.sync('read', this, options);
    },

    // Set a hash of model attributes, and sync the model to the server.
    // If the server returns an attributes hash that differs, the model's
    // state will be `set` again.
    save: function(key, val, options) {
      var attrs, method, xhr, attributes = this.attributes;

      // Handle both `"key", value` and `{key: value}` -style arguments.
      if (key == null || typeof key === 'object') {
        attrs = key;
        options = val;
      } else {
        (attrs = {})[key] = val;
      }

      options = _.extend({validate: true}, options);

      // If we're not waiting and attributes exist, save acts as
      // `set(attr).save(null, opts)` with validation. Otherwise, check if
      // the model will be valid when the attributes, if any, are set.
      if (attrs && !options.wait) {
        if (!this.set(attrs, options)) return false;
      } else {
        if (!this._validate(attrs, options)) return false;
      }

      // Set temporary attributes if `{wait: true}`.
      if (attrs && options.wait) {
        this.attributes = _.extend({}, attributes, attrs);
      }

      // After a successful server-side save, the client is (optionally)
      // updated with the server-side state.
      if (options.parse === void 0) options.parse = true;
      var model = this;
      var success = options.success;
      options.success = function(resp) {
        // Ensure attributes are restored during synchronous saves.
        model.attributes = attributes;
        var serverAttrs = model.parse(resp, options);
        if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs);
        if (_.isObject(serverAttrs) && !model.set(serverAttrs, options)) {
          return false;
        }
        if (success) success(model, resp, options);
        model.trigger('sync', model, resp, options);
      };
      wrapError(this, options);

      method = this.isNew() ? 'create' : (options.patch ? 'patch' : 'update');
      if (method === 'patch') options.attrs = attrs;
      xhr = this.sync(method, this, options);

      // Restore attributes.
      if (attrs && options.wait) this.attributes = attributes;

      return xhr;
    },

    // Destroy this model on the server if it was already persisted.
    // Optimistically removes the model from its collection, if it has one.
    // If `wait: true` is passed, waits for the server to respond before removal.
    destroy: function(options) {
      options = options ? _.clone(options) : {};
      var model = this;
      var success = options.success;

      var destroy = function() {
        model.trigger('destroy', model, model.collection, options);
      };

      options.success = function(resp) {
        if (options.wait || model.isNew()) destroy();
        if (success) success(model, resp, options);
        if (!model.isNew()) model.trigger('sync', model, resp, options);
      };

      if (this.isNew()) {
        options.success();
        return false;
      }
      wrapError(this, options);

      var xhr = this.sync('delete', this, options);
      if (!options.wait) destroy();
      return xhr;
    },

    // Default URL for the model's representation on the server -- if you're
    // using Backbone's restful methods, override this to change the endpoint
    // that will be called.
    url: function() {
      var base =
        _.result(this, 'urlRoot') ||
        _.result(this.collection, 'url') ||
        urlError();
      if (this.isNew()) return base;
      return base.replace(/([^\/])$/, '$1/') + encodeURIComponent(this.id);
    },

    // **parse** converts a response into the hash of attributes to be `set` on
    // the model. The default implementation is just to pass the response along.
    parse: function(resp, options) {
      return resp;
    },

    // Create a new model with identical attributes to this one.
    clone: function() {
      return new this.constructor(this.attributes);
    },

    // A model is new if it has never been saved to the server, and lacks an id.
    isNew: function() {
      return !this.has(this.idAttribute);
    },

    // Check if the model is currently in a valid state.
    isValid: function(options) {
      return this._validate({}, _.extend(options || {}, { validate: true }));
    },

    // Run validation against the next complete set of model attributes,
    // returning `true` if all is well. Otherwise, fire an `"invalid"` event.
    _validate: function(attrs, options) {
      if (!options.validate || !this.validate) return true;
      attrs = _.extend({}, this.attributes, attrs);
      var error = this.validationError = this.validate(attrs, options) || null;
      if (!error) return true;
      this.trigger('invalid', this, error, _.extend(options, {validationError: error}));
      return false;
    }

  });

  // Underscore methods that we want to implement on the Model.
  var modelMethods = ['keys', 'values', 'pairs', 'invert', 'pick', 'omit'];

  // Mix in each Underscore method as a proxy to `Model#attributes`.
  _.each(modelMethods, function(method) {
    Model.prototype[method] = function() {
      var args = slice.call(arguments);
      args.unshift(this.attributes);
      return _[method].apply(_, args);
    };
  });

  // Backbone.Collection
  // -------------------

  // If models tend to represent a single row of data, a Backbone Collection is
  // more analagous to a table full of data ... or a small slice or page of that
  // table, or a collection of rows that belong together for a particular reason
  // -- all of the messages in this particular folder, all of the documents
  // belonging to this particular author, and so on. Collections maintain
  // indexes of their models, both in order, and for lookup by `id`.

  // Create a new **Collection**, perhaps to contain a specific type of `model`.
  // If a `comparator` is specified, the Collection will maintain
  // its models in sort order, as they're added and removed.
  var Collection = Backbone.Collection = function(models, options) {
    options || (options = {});
    if (options.model) this.model = options.model;
    if (options.comparator !== void 0) this.comparator = options.comparator;
    this._reset();
    this.initialize.apply(this, arguments);
    if (models) this.reset(models, _.extend({silent: true}, options));
  };

  // Default options for `Collection#set`.
  var setOptions = {add: true, remove: true, merge: true};
  var addOptions = {add: true, remove: false};

  // Define the Collection's inheritable methods.
  _.extend(Collection.prototype, Events, {

    // The default model for a collection is just a **Backbone.Model**.
    // This should be overridden in most cases.
    model: Model,

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // The JSON representation of a Collection is an array of the
    // models' attributes.
    toJSON: function(options) {
      return this.map(function(model){ return model.toJSON(options); });
    },

    // Proxy `Backbone.sync` by default.
    sync: function() {
      return Backbone.sync.apply(this, arguments);
    },

    // Add a model, or list of models to the set.
    add: function(models, options) {
      return this.set(models, _.extend({merge: false}, options, addOptions));
    },

    // Remove a model, or a list of models from the set.
    remove: function(models, options) {
      var singular = !_.isArray(models);
      models = singular ? [models] : _.clone(models);
      options || (options = {});
      var i, l, index, model;
      for (i = 0, l = models.length; i < l; i++) {
        model = models[i] = this.get(models[i]);
        if (!model) continue;
        delete this._byId[model.id];
        delete this._byId[model.cid];
        index = this.indexOf(model);
        this.models.splice(index, 1);
        this.length--;
        if (!options.silent) {
          options.index = index;
          model.trigger('remove', model, this, options);
        }
        this._removeReference(model, options);
      }
      return singular ? models[0] : models;
    },

    // Update a collection by `set`-ing a new list of models, adding new ones,
    // removing models that are no longer present, and merging models that
    // already exist in the collection, as necessary. Similar to **Model#set**,
    // the core operation for updating the data contained by the collection.
    set: function(models, options) {
      options = _.defaults({}, options, setOptions);
      if (options.parse) models = this.parse(models, options);
      var singular = !_.isArray(models);
      models = singular ? (models ? [models] : []) : _.clone(models);
      var i, l, id, model, attrs, existing, sort;
      var at = options.at;
      var targetModel = this.model;
      var sortable = this.comparator && (at == null) && options.sort !== false;
      var sortAttr = _.isString(this.comparator) ? this.comparator : null;
      var toAdd = [], toRemove = [], modelMap = {};
      var add = options.add, merge = options.merge, remove = options.remove;
      var order = !sortable && add && remove ? [] : false;

      // Turn bare objects into model references, and prevent invalid models
      // from being added.
      for (i = 0, l = models.length; i < l; i++) {
        attrs = models[i] || {};
        if (attrs instanceof Model) {
          id = model = attrs;
        } else {
          id = attrs[targetModel.prototype.idAttribute || 'id'];
        }

        // If a duplicate is found, prevent it from being added and
        // optionally merge it into the existing model.
        if (existing = this.get(id)) {
          if (remove) modelMap[existing.cid] = true;
          if (merge) {
            attrs = attrs === model ? model.attributes : attrs;
            if (options.parse) attrs = existing.parse(attrs, options);
            existing.set(attrs, options);
            if (sortable && !sort && existing.hasChanged(sortAttr)) sort = true;
          }
          models[i] = existing;

        // If this is a new, valid model, push it to the `toAdd` list.
        } else if (add) {
          model = models[i] = this._prepareModel(attrs, options);
          if (!model) continue;
          toAdd.push(model);
          this._addReference(model, options);
        }

        // Do not add multiple models with the same `id`.
        model = existing || model;
        if (order && (model.isNew() || !modelMap[model.id])) order.push(model);
        modelMap[model.id] = true;
      }

      // Remove nonexistent models if appropriate.
      if (remove) {
        for (i = 0, l = this.length; i < l; ++i) {
          if (!modelMap[(model = this.models[i]).cid]) toRemove.push(model);
        }
        if (toRemove.length) this.remove(toRemove, options);
      }

      // See if sorting is needed, update `length` and splice in new models.
      if (toAdd.length || (order && order.length)) {
        if (sortable) sort = true;
        this.length += toAdd.length;
        if (at != null) {
          for (i = 0, l = toAdd.length; i < l; i++) {
            this.models.splice(at + i, 0, toAdd[i]);
          }
        } else {
          if (order) this.models.length = 0;
          var orderedModels = order || toAdd;
          for (i = 0, l = orderedModels.length; i < l; i++) {
            this.models.push(orderedModels[i]);
          }
        }
      }

      // Silently sort the collection if appropriate.
      if (sort) this.sort({silent: true});

      // Unless silenced, it's time to fire all appropriate add/sort events.
      if (!options.silent) {
        for (i = 0, l = toAdd.length; i < l; i++) {
          (model = toAdd[i]).trigger('add', model, this, options);
        }
        if (sort || (order && order.length)) this.trigger('sort', this, options);
      }

      // Return the added (or merged) model (or models).
      return singular ? models[0] : models;
    },

    // When you have more items than you want to add or remove individually,
    // you can reset the entire set with a new list of models, without firing
    // any granular `add` or `remove` events. Fires `reset` when finished.
    // Useful for bulk operations and optimizations.
    reset: function(models, options) {
      options || (options = {});
      for (var i = 0, l = this.models.length; i < l; i++) {
        this._removeReference(this.models[i], options);
      }
      options.previousModels = this.models;
      this._reset();
      models = this.add(models, _.extend({silent: true}, options));
      if (!options.silent) this.trigger('reset', this, options);
      return models;
    },

    // Add a model to the end of the collection.
    push: function(model, options) {
      return this.add(model, _.extend({at: this.length}, options));
    },

    // Remove a model from the end of the collection.
    pop: function(options) {
      var model = this.at(this.length - 1);
      this.remove(model, options);
      return model;
    },

    // Add a model to the beginning of the collection.
    unshift: function(model, options) {
      return this.add(model, _.extend({at: 0}, options));
    },

    // Remove a model from the beginning of the collection.
    shift: function(options) {
      var model = this.at(0);
      this.remove(model, options);
      return model;
    },

    // Slice out a sub-array of models from the collection.
    slice: function() {
      return slice.apply(this.models, arguments);
    },

    // Get a model from the set by id.
    get: function(obj) {
      if (obj == null) return void 0;
      return this._byId[obj] || this._byId[obj.id] || this._byId[obj.cid];
    },

    // Get the model at the given index.
    at: function(index) {
      return this.models[index];
    },

    // Return models with matching attributes. Useful for simple cases of
    // `filter`.
    where: function(attrs, first) {
      if (_.isEmpty(attrs)) return first ? void 0 : [];
      return this[first ? 'find' : 'filter'](function(model) {
        for (var key in attrs) {
          if (attrs[key] !== model.get(key)) return false;
        }
        return true;
      });
    },

    // Return the first model with matching attributes. Useful for simple cases
    // of `find`.
    findWhere: function(attrs) {
      return this.where(attrs, true);
    },

    // Force the collection to re-sort itself. You don't need to call this under
    // normal circumstances, as the set will maintain sort order as each item
    // is added.
    sort: function(options) {
      if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
      options || (options = {});

      // Run sort based on type of `comparator`.
      if (_.isString(this.comparator) || this.comparator.length === 1) {
        this.models = this.sortBy(this.comparator, this);
      } else {
        this.models.sort(_.bind(this.comparator, this));
      }

      if (!options.silent) this.trigger('sort', this, options);
      return this;
    },

    // Pluck an attribute from each model in the collection.
    pluck: function(attr) {
      return _.invoke(this.models, 'get', attr);
    },

    // Fetch the default set of models for this collection, resetting the
    // collection when they arrive. If `reset: true` is passed, the response
    // data will be passed through the `reset` method instead of `set`.
    fetch: function(options) {
      options = options ? _.clone(options) : {};
      if (options.parse === void 0) options.parse = true;
      var success = options.success;
      var collection = this;
      options.success = function(resp) {
        var method = options.reset ? 'reset' : 'set';
        collection[method](resp, options);
        if (success) success(collection, resp, options);
        collection.trigger('sync', collection, resp, options);
      };
      wrapError(this, options);
      return this.sync('read', this, options);
    },

    // Create a new instance of a model in this collection. Add the model to the
    // collection immediately, unless `wait: true` is passed, in which case we
    // wait for the server to agree.
    create: function(model, options) {
      options = options ? _.clone(options) : {};
      if (!(model = this._prepareModel(model, options))) return false;
      if (!options.wait) this.add(model, options);
      var collection = this;
      var success = options.success;
      options.success = function(model, resp) {
        if (options.wait) collection.add(model, options);
        if (success) success(model, resp, options);
      };
      model.save(null, options);
      return model;
    },

    // **parse** converts a response into a list of models to be added to the
    // collection. The default implementation is just to pass it through.
    parse: function(resp, options) {
      return resp;
    },

    // Create a new collection with an identical list of models as this one.
    clone: function() {
      return new this.constructor(this.models);
    },

    // Private method to reset all internal state. Called when the collection
    // is first initialized or reset.
    _reset: function() {
      this.length = 0;
      this.models = [];
      this._byId  = {};
    },

    // Prepare a hash of attributes (or other model) to be added to this
    // collection.
    _prepareModel: function(attrs, options) {
      if (attrs instanceof Model) return attrs;
      options = options ? _.clone(options) : {};
      options.collection = this;
      var model = new this.model(attrs, options);
      if (!model.validationError) return model;
      this.trigger('invalid', this, model.validationError, options);
      return false;
    },

    // Internal method to create a model's ties to a collection.
    _addReference: function(model, options) {
      this._byId[model.cid] = model;
      if (model.id != null) this._byId[model.id] = model;
      if (!model.collection) model.collection = this;
      model.on('all', this._onModelEvent, this);
    },

    // Internal method to sever a model's ties to a collection.
    _removeReference: function(model, options) {
      if (this === model.collection) delete model.collection;
      model.off('all', this._onModelEvent, this);
    },

    // Internal method called every time a model in the set fires an event.
    // Sets need to update their indexes when models change ids. All other
    // events simply proxy through. "add" and "remove" events that originate
    // in other collections are ignored.
    _onModelEvent: function(event, model, collection, options) {
      if ((event === 'add' || event === 'remove') && collection !== this) return;
      if (event === 'destroy') this.remove(model, options);
      if (model && event === 'change:' + model.idAttribute) {
        delete this._byId[model.previous(model.idAttribute)];
        if (model.id != null) this._byId[model.id] = model;
      }
      this.trigger.apply(this, arguments);
    }

  });

  // Underscore methods that we want to implement on the Collection.
  // 90% of the core usefulness of Backbone Collections is actually implemented
  // right here:
  var methods = ['forEach', 'each', 'map', 'collect', 'reduce', 'foldl',
    'inject', 'reduceRight', 'foldr', 'find', 'detect', 'filter', 'select',
    'reject', 'every', 'all', 'some', 'any', 'include', 'contains', 'invoke',
    'max', 'min', 'toArray', 'size', 'first', 'head', 'take', 'initial', 'rest',
    'tail', 'drop', 'last', 'without', 'difference', 'indexOf', 'shuffle',
    'lastIndexOf', 'isEmpty', 'chain', 'sample'];

  // Mix in each Underscore method as a proxy to `Collection#models`.
  _.each(methods, function(method) {
    Collection.prototype[method] = function() {
      var args = slice.call(arguments);
      args.unshift(this.models);
      return _[method].apply(_, args);
    };
  });

  // Underscore methods that take a property name as an argument.
  var attributeMethods = ['groupBy', 'countBy', 'sortBy', 'indexBy'];

  // Use attributes instead of properties.
  _.each(attributeMethods, function(method) {
    Collection.prototype[method] = function(value, context) {
      var iterator = _.isFunction(value) ? value : function(model) {
        return model.get(value);
      };
      return _[method](this.models, iterator, context);
    };
  });

  // Backbone.View
  // -------------

  // Backbone Views are almost more convention than they are actual code. A View
  // is simply a JavaScript object that represents a logical chunk of UI in the
  // DOM. This might be a single item, an entire list, a sidebar or panel, or
  // even the surrounding frame which wraps your whole app. Defining a chunk of
  // UI as a **View** allows you to define your DOM events declaratively, without
  // having to worry about render order ... and makes it easy for the view to
  // react to specific changes in the state of your models.

  // Creating a Backbone.View creates its initial element outside of the DOM,
  // if an existing element is not provided...
  var View = Backbone.View = function(options) {
    this.cid = _.uniqueId('view');
    options || (options = {});
    _.extend(this, _.pick(options, viewOptions));
    this._ensureElement();
    this.initialize.apply(this, arguments);
    this.delegateEvents();
  };

  // Cached regex to split keys for `delegate`.
  var delegateEventSplitter = /^(\S+)\s*(.*)$/;

  // List of view options to be merged as properties.
  var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events'];

  // Set up all inheritable **Backbone.View** properties and methods.
  _.extend(View.prototype, Events, {

    // The default `tagName` of a View's element is `"div"`.
    tagName: 'div',

    // jQuery delegate for element lookup, scoped to DOM elements within the
    // current view. This should be preferred to global lookups where possible.
    $: function(selector) {
      return this.$el.find(selector);
    },

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // **render** is the core function that your view should override, in order
    // to populate its element (`this.el`), with the appropriate HTML. The
    // convention is for **render** to always return `this`.
    render: function() {
      return this;
    },

    // Remove this view by taking the element out of the DOM, and removing any
    // applicable Backbone.Events listeners.
    remove: function() {
      this.$el.remove();
      this.stopListening();
      return this;
    },

    // Change the view's element (`this.el` property), including event
    // re-delegation.
    setElement: function(element, delegate) {
      if (this.$el) this.undelegateEvents();
      this.$el = element instanceof Backbone.$ ? element : Backbone.$(element);
      this.el = this.$el[0];
      if (delegate !== false) this.delegateEvents();
      return this;
    },

    // Set callbacks, where `this.events` is a hash of
    //
    // *{"event selector": "callback"}*
    //
    //     {
    //       'mousedown .title':  'edit',
    //       'click .button':     'save',
    //       'click .open':       function(e) { ... }
    //     }
    //
    // pairs. Callbacks will be bound to the view, with `this` set properly.
    // Uses event delegation for efficiency.
    // Omitting the selector binds the event to `this.el`.
    // This only works for delegate-able events: not `focus`, `blur`, and
    // not `change`, `submit`, and `reset` in Internet Explorer.
    delegateEvents: function(events) {
      if (!(events || (events = _.result(this, 'events')))) return this;
      this.undelegateEvents();
      for (var key in events) {
        var method = events[key];
        if (!_.isFunction(method)) method = this[events[key]];
        if (!method) continue;

        var match = key.match(delegateEventSplitter);
        var eventName = match[1], selector = match[2];
        method = _.bind(method, this);
        eventName += '.delegateEvents' + this.cid;
        if (selector === '') {
          this.$el.on(eventName, method);
        } else {
          this.$el.on(eventName, selector, method);
        }
      }
      return this;
    },

    // Clears all callbacks previously bound to the view with `delegateEvents`.
    // You usually don't need to use this, but may wish to if you have multiple
    // Backbone views attached to the same DOM element.
    undelegateEvents: function() {
      this.$el.off('.delegateEvents' + this.cid);
      return this;
    },

    // Ensure that the View has a DOM element to render into.
    // If `this.el` is a string, pass it through `$()`, take the first
    // matching element, and re-assign it to `el`. Otherwise, create
    // an element from the `id`, `className` and `tagName` properties.
    _ensureElement: function() {
      if (!this.el) {
        var attrs = _.extend({}, _.result(this, 'attributes'));
        if (this.id) attrs.id = _.result(this, 'id');
        if (this.className) attrs['class'] = _.result(this, 'className');
        var $el = Backbone.$('<' + _.result(this, 'tagName') + '>').attr(attrs);
        this.setElement($el, false);
      } else {
        this.setElement(_.result(this, 'el'), false);
      }
    }

  });

  // Backbone.sync
  // -------------

  // Override this function to change the manner in which Backbone persists
  // models to the server. You will be passed the type of request, and the
  // model in question. By default, makes a RESTful Ajax request
  // to the model's `url()`. Some possible customizations could be:
  //
  // * Use `setTimeout` to batch rapid-fire updates into a single request.
  // * Send up the models as XML instead of JSON.
  // * Persist models via WebSockets instead of Ajax.
  //
  // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
  // as `POST`, with a `_method` parameter containing the true HTTP method,
  // as well as all requests with the body as `application/x-www-form-urlencoded`
  // instead of `application/json` with the model in a param named `model`.
  // Useful when interfacing with server-side languages like **PHP** that make
  // it difficult to read the body of `PUT` requests.
  Backbone.sync = function(method, model, options) {
    var type = methodMap[method];

    // Default options, unless specified.
    _.defaults(options || (options = {}), {
      emulateHTTP: Backbone.emulateHTTP,
      emulateJSON: Backbone.emulateJSON
    });

    // Default JSON-request options.
    var params = {type: type, dataType: 'json'};

    // Ensure that we have a URL.
    if (!options.url) {
      params.url = _.result(model, 'url') || urlError();
    }

    // Ensure that we have the appropriate request data.
    if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) {
      params.contentType = 'application/json';
      params.data = JSON.stringify(options.attrs || model.toJSON(options));
    }

    // For older servers, emulate JSON by encoding the request into an HTML-form.
    if (options.emulateJSON) {
      params.contentType = 'application/x-www-form-urlencoded';
      params.data = params.data ? {model: params.data} : {};
    }

    // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
    // And an `X-HTTP-Method-Override` header.
    if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) {
      params.type = 'POST';
      if (options.emulateJSON) params.data._method = type;
      var beforeSend = options.beforeSend;
      options.beforeSend = function(xhr) {
        xhr.setRequestHeader('X-HTTP-Method-Override', type);
        if (beforeSend) return beforeSend.apply(this, arguments);
      };
    }

    // Don't process data on a non-GET request.
    if (params.type !== 'GET' && !options.emulateJSON) {
      params.processData = false;
    }

    // If we're sending a `PATCH` request, and we're in an old Internet Explorer
    // that still has ActiveX enabled by default, override jQuery to use that
    // for XHR instead. Remove this line when jQuery supports `PATCH` on IE8.
    if (params.type === 'PATCH' && noXhrPatch) {
      params.xhr = function() {
        return new ActiveXObject("Microsoft.XMLHTTP");
      };
    }

    // Make the request, allowing the user to override any Ajax options.
    var xhr = options.xhr = Backbone.ajax(_.extend(params, options));
    model.trigger('request', model, xhr, options);
    return xhr;
  };

  var noXhrPatch =
    typeof window !== 'undefined' && !!window.ActiveXObject &&
      !(window.XMLHttpRequest && (new XMLHttpRequest).dispatchEvent);

  // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
  var methodMap = {
    'create': 'POST',
    'update': 'PUT',
    'patch':  'PATCH',
    'delete': 'DELETE',
    'read':   'GET'
  };

  // Set the default implementation of `Backbone.ajax` to proxy through to `$`.
  // Override this if you'd like to use a different library.
  Backbone.ajax = function() {
    return Backbone.$.ajax.apply(Backbone.$, arguments);
  };

  // Backbone.Router
  // ---------------

  // Routers map faux-URLs to actions, and fire events when routes are
  // matched. Creating a new one sets its `routes` hash, if not set statically.
  var Router = Backbone.Router = function(options) {
    options || (options = {});
    if (options.routes) this.routes = options.routes;
    this._bindRoutes();
    this.initialize.apply(this, arguments);
  };

  // Cached regular expressions for matching named param parts and splatted
  // parts of route strings.
  var optionalParam = /\((.*?)\)/g;
  var namedParam    = /(\(\?)?:\w+/g;
  var splatParam    = /\*\w+/g;
  var escapeRegExp  = /[\-{}\[\]+?.,\\\^$|#\s]/g;

  // Set up all inheritable **Backbone.Router** properties and methods.
  _.extend(Router.prototype, Events, {

    // Initialize is an empty function by default. Override it with your own
    // initialization logic.
    initialize: function(){},

    // Manually bind a single named route to a callback. For example:
    //
    //     this.route('search/:query/p:num', 'search', function(query, num) {
    //       ...
    //     });
    //
    route: function(route, name, callback) {
      if (!_.isRegExp(route)) route = this._routeToRegExp(route);
      if (_.isFunction(name)) {
        callback = name;
        name = '';
      }
      if (!callback) callback = this[name];
      var router = this;
      Backbone.history.route(route, function(fragment) {
        var args = router._extractParameters(route, fragment);
        router.execute(callback, args);
        router.trigger.apply(router, ['route:' + name].concat(args));
        router.trigger('route', name, args);
        Backbone.history.trigger('route', router, name, args);
      });
      return this;
    },

    // Execute a route handler with the provided parameters.  This is an
    // excellent place to do pre-route setup or post-route cleanup.
    execute: function(callback, args) {
      if (callback) callback.apply(this, args);
    },

    // Simple proxy to `Backbone.history` to save a fragment into the history.
    navigate: function(fragment, options) {
      Backbone.history.navigate(fragment, options);
      return this;
    },

    // Bind all defined routes to `Backbone.history`. We have to reverse the
    // order of the routes here to support behavior where the most general
    // routes can be defined at the bottom of the route map.
    _bindRoutes: function() {
      if (!this.routes) return;
      this.routes = _.result(this, 'routes');
      var route, routes = _.keys(this.routes);
      while ((route = routes.pop()) != null) {
        this.route(route, this.routes[route]);
      }
    },

    // Convert a route string into a regular expression, suitable for matching
    // against the current location hash.
    _routeToRegExp: function(route) {
      route = route.replace(escapeRegExp, '\\$&')
                   .replace(optionalParam, '(?:$1)?')
                   .replace(namedParam, function(match, optional) {
                     return optional ? match : '([^/?]+)';
                   })
                   .replace(splatParam, '([^?]*?)');
      return new RegExp('^' + route + '(?:\\?([\\s\\S]*))?$');
    },

    // Given a route, and a URL fragment that it matches, return the array of
    // extracted decoded parameters. Empty or unmatched parameters will be
    // treated as `null` to normalize cross-browser behavior.
    _extractParameters: function(route, fragment) {
      var params = route.exec(fragment).slice(1);
      return _.map(params, function(param, i) {
        // Don't decode the search params.
        if (i === params.length - 1) return param || null;
        return param ? decodeURIComponent(param) : null;
      });
    }

  });

  // Backbone.History
  // ----------------

  // Handles cross-browser history management, based on either
  // [pushState](http://diveintohtml5.info/history.html) and real URLs, or
  // [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange)
  // and URL fragments. If the browser supports neither (old IE, natch),
  // falls back to polling.
  var History = Backbone.History = function() {
    this.handlers = [];
    _.bindAll(this, 'checkUrl');

    // Ensure that `History` can be used outside of the browser.
    if (typeof window !== 'undefined') {
      this.location = window.location;
      this.history = window.history;
    }
  };

  // Cached regex for stripping a leading hash/slash and trailing space.
  var routeStripper = /^[#\/]|\s+$/g;

  // Cached regex for stripping leading and trailing slashes.
  var rootStripper = /^\/+|\/+$/g;

  // Cached regex for detecting MSIE.
  var isExplorer = /msie [\w.]+/;

  // Cached regex for removing a trailing slash.
  var trailingSlash = /\/$/;

  // Cached regex for stripping urls of hash.
  var pathStripper = /#.*$/;

  // Has the history handling already been started?
  History.started = false;

  // Set up all inheritable **Backbone.History** properties and methods.
  _.extend(History.prototype, Events, {

    // The default interval to poll for hash changes, if necessary, is
    // twenty times a second.
    interval: 50,

    // Are we at the app root?
    atRoot: function() {
      return this.location.pathname.replace(/[^\/]$/, '$&/') === this.root;
    },

    // Gets the true hash value. Cannot use location.hash directly due to bug
    // in Firefox where location.hash will always be decoded.
    getHash: function(window) {
      var match = (window || this).location.href.match(/#(.*)$/);
      return match ? match[1] : '';
    },

    // Get the cross-browser normalized URL fragment, either from the URL,
    // the hash, or the override.
    getFragment: function(fragment, forcePushState) {
      if (fragment == null) {
        if (this._hasPushState || !this._wantsHashChange || forcePushState) {
          fragment = decodeURI(this.location.pathname + this.location.search);
          var root = this.root.replace(trailingSlash, '');
          if (!fragment.indexOf(root)) fragment = fragment.slice(root.length);
        } else {
          fragment = this.getHash();
        }
      }
      return fragment.replace(routeStripper, '');
    },

    // Start the hash change handling, returning `true` if the current URL matches
    // an existing route, and `false` otherwise.
    start: function(options) {
      if (History.started) throw new Error("Backbone.history has already been started");
      History.started = true;

      // Figure out the initial configuration. Do we need an iframe?
      // Is pushState desired ... is it available?
      this.options          = _.extend({root: '/'}, this.options, options);
      this.root             = this.options.root;
      this._wantsHashChange = this.options.hashChange !== false;
      this._wantsPushState  = !!this.options.pushState;
      this._hasPushState    = !!(this.options.pushState && this.history && this.history.pushState);
      var fragment          = this.getFragment();
      var docMode           = document.documentMode;
      var oldIE             = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7));

      // Normalize root to always include a leading and trailing slash.
      this.root = ('/' + this.root + '/').replace(rootStripper, '/');

      if (oldIE && this._wantsHashChange) {
        var frame = Backbone.$('<iframe src="javascript:0" tabindex="-1">');
        this.iframe = frame.hide().appendTo('body')[0].contentWindow;
        this.navigate(fragment);
      }

      // Depending on whether we're using pushState or hashes, and whether
      // 'onhashchange' is supported, determine how we check the URL state.
      if (this._hasPushState) {
        Backbone.$(window).on('popstate', this.checkUrl);
      } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
        Backbone.$(window).on('hashchange', this.checkUrl);
      } else if (this._wantsHashChange) {
        this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
      }

      // Determine if we need to change the base url, for a pushState link
      // opened by a non-pushState browser.
      this.fragment = fragment;
      var loc = this.location;

      // Transition from hashChange to pushState or vice versa if both are
      // requested.
      if (this._wantsHashChange && this._wantsPushState) {

        // If we've started off with a route from a `pushState`-enabled
        // browser, but we're currently in a browser that doesn't support it...
        if (!this._hasPushState && !this.atRoot()) {
          this.fragment = this.getFragment(null, true);
          this.location.replace(this.root + '#' + this.fragment);
          // Return immediately as browser will do redirect to new url
          return true;

        // Or if we've started out with a hash-based route, but we're currently
        // in a browser where it could be `pushState`-based instead...
        } else if (this._hasPushState && this.atRoot() && loc.hash) {
          this.fragment = this.getHash().replace(routeStripper, '');
          this.history.replaceState({}, document.title, this.root + this.fragment);
        }

      }

      if (!this.options.silent) return this.loadUrl();
    },

    // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
    // but possibly useful for unit testing Routers.
    stop: function() {
      Backbone.$(window).off('popstate', this.checkUrl).off('hashchange', this.checkUrl);
      if (this._checkUrlInterval) clearInterval(this._checkUrlInterval);
      History.started = false;
    },

    // Add a route to be tested when the fragment changes. Routes added later
    // may override previous routes.
    route: function(route, callback) {
      this.handlers.unshift({route: route, callback: callback});
    },

    // Checks the current URL to see if it has changed, and if it has,
    // calls `loadUrl`, normalizing across the hidden iframe.
    checkUrl: function(e) {
      var current = this.getFragment();
      if (current === this.fragment && this.iframe) {
        current = this.getFragment(this.getHash(this.iframe));
      }
      if (current === this.fragment) return false;
      if (this.iframe) this.navigate(current);
      this.loadUrl();
    },

    // Attempt to load the current URL fragment. If a route succeeds with a
    // match, returns `true`. If no defined routes matches the fragment,
    // returns `false`.
    loadUrl: function(fragment) {
      fragment = this.fragment = this.getFragment(fragment);
      return _.any(this.handlers, function(handler) {
        if (handler.route.test(fragment)) {
          handler.callback(fragment);
          return true;
        }
      });
    },

    // Save a fragment into the hash history, or replace the URL state if the
    // 'replace' option is passed. You are responsible for properly URL-encoding
    // the fragment in advance.
    //
    // The options object can contain `trigger: true` if you wish to have the
    // route callback be fired (not usually desirable), or `replace: true`, if
    // you wish to modify the current URL without adding an entry to the history.
    navigate: function(fragment, options) {
      if (!History.started) return false;
      if (!options || options === true) options = {trigger: !!options};

      var url = this.root + (fragment = this.getFragment(fragment || ''));

      // Strip the hash for matching.
      fragment = fragment.replace(pathStripper, '');

      if (this.fragment === fragment) return;
      this.fragment = fragment;

      // Don't include a trailing slash on the root.
      if (fragment === '' && url !== '/') url = url.slice(0, -1);

      // If pushState is available, we use it to set the fragment as a real URL.
      if (this._hasPushState) {
        this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url);

      // If hash changes haven't been explicitly disabled, update the hash
      // fragment to store history.
      } else if (this._wantsHashChange) {
        this._updateHash(this.location, fragment, options.replace);
        if (this.iframe && (fragment !== this.getFragment(this.getHash(this.iframe)))) {
          // Opening and closing the iframe tricks IE7 and earlier to push a
          // history entry on hash-tag change.  When replace is true, we don't
          // want this.
          if(!options.replace) this.iframe.document.open().close();
          this._updateHash(this.iframe.location, fragment, options.replace);
        }

      // If you've told us that you explicitly don't want fallback hashchange-
      // based history, then `navigate` becomes a page refresh.
      } else {
        return this.location.assign(url);
      }
      if (options.trigger) return this.loadUrl(fragment);
    },

    // Update the hash location, either replacing the current entry, or adding
    // a new one to the browser history.
    _updateHash: function(location, fragment, replace) {
      if (replace) {
        var href = location.href.replace(/(javascript:|#).*$/, '');
        location.replace(href + '#' + fragment);
      } else {
        // Some browsers require that `hash` contains a leading #.
        location.hash = '#' + fragment;
      }
    }

  });

  // Create the default Backbone.history.
  Backbone.history = new History;

  // Helpers
  // -------

  // Helper function to correctly set up the prototype chain, for subclasses.
  // Similar to `goog.inherits`, but uses a hash of prototype properties and
  // class properties to be extended.
  var extend = function(protoProps, staticProps) {
    var parent = this;
    var child;

    // The constructor function for the new subclass is either defined by you
    // (the "constructor" property in your `extend` definition), or defaulted
    // by us to simply call the parent's constructor.
    if (protoProps && _.has(protoProps, 'constructor')) {
      child = protoProps.constructor;
    } else {
      child = function(){ return parent.apply(this, arguments); };
    }

    // Add static properties to the constructor function, if supplied.
    _.extend(child, parent, staticProps);

    // Set the prototype chain to inherit from `parent`, without calling
    // `parent`'s constructor function.
    var Surrogate = function(){ this.constructor = child; };
    Surrogate.prototype = parent.prototype;
    child.prototype = new Surrogate;

    // Add prototype properties (instance properties) to the subclass,
    // if supplied.
    if (protoProps) _.extend(child.prototype, protoProps);

    // Set a convenience property in case the parent's prototype is needed
    // later.
    child.__super__ = parent.prototype;

    return child;
  };

  // Set up inheritance for the model, collection, router, view and history.
  Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend;

  // Throw an error when a URL is needed, and none is supplied.
  var urlError = function() {
    throw new Error('A "url" property or function must be specified');
  };

  // Wrap an optional error callback with a fallback error event.
  var wrapError = function(model, options) {
    var error = options.error;
    options.error = function(resp) {
      if (error) error(model, resp, options);
      model.trigger('error', model, resp, options);
    };
  };

  return Backbone;

}));

/* Blob.js
 * A Blob implementation.
 * 2013-06-20
 * 
 * By Eli Grey, http://eligrey.com
 * By Devin Samarin, https://github.com/eboyjr
 * License: X11/MIT
 *   See LICENSE.md
 */

/*global self, unescape */
/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,
  plusplus: true */

/*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */

if (!(typeof Blob === "function" || typeof Blob === "object") || typeof URL === "undefined")
if ((typeof Blob === "function" || typeof Blob === "object") && typeof webkitURL !== "undefined") self.URL = webkitURL;
else var Blob = (function (view) {
  "use strict";

  var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || view.MSBlobBuilder || (function(view) {
    var
        get_class = function(object) {
        return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1];
      }
      , FakeBlobBuilder = function BlobBuilder() {
        this.data = [];
      }
      , FakeBlob = function Blob(data, type, encoding) {
        this.data = data;
        this.size = data.length;
        this.type = type;
        this.encoding = encoding;
      }
      , FBB_proto = FakeBlobBuilder.prototype
      , FB_proto = FakeBlob.prototype
      , FileReaderSync = view.FileReaderSync
      , FileException = function(type) {
        this.code = this[this.name = type];
      }
      , file_ex_codes = (
          "NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR "
        + "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR"
      ).split(" ")
      , file_ex_code = file_ex_codes.length
      , real_URL = view.URL || view.webkitURL || view
      , real_create_object_URL = real_URL.createObjectURL
      , real_revoke_object_URL = real_URL.revokeObjectURL
      , URL = real_URL
      , btoa = view.btoa
      , atob = view.atob
      
      , ArrayBuffer = view.ArrayBuffer
      , Uint8Array = view.Uint8Array
    ;
    FakeBlob.fake = FB_proto.fake = true;
    while (file_ex_code--) {
      FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;
    }
    if (!real_URL.createObjectURL) {
      URL = view.URL = {};
    }
    URL.createObjectURL = function(blob) {
      var
          type = blob.type
        , data_URI_header
      ;
      if (type === null) {
        type = "application/octet-stream";
      }
      if (blob instanceof FakeBlob) {
        data_URI_header = "data:" + type;
        if (blob.encoding === "base64") {
          return data_URI_header + ";base64," + blob.data;
        } else if (blob.encoding === "URI") {
          return data_URI_header + "," + decodeURIComponent(blob.data);
        } if (btoa) {
          return data_URI_header + ";base64," + btoa(blob.data);
        } else {
          return data_URI_header + "," + encodeURIComponent(blob.data);
        }
      } else if (real_create_object_URL) {
        return real_create_object_URL.call(real_URL, blob);
      }
    };
    URL.revokeObjectURL = function(object_URL) {
      if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) {
        real_revoke_object_URL.call(real_URL, object_URL);
      }
    };
    FBB_proto.append = function(data/*, endings*/) {
      var bb = this.data;
      // decode data to a binary string
      if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {
        var
            str = ""
          , buf = new Uint8Array(data)
          , i = 0
          , buf_len = buf.length
        ;
        for (; i < buf_len; i++) {
          str += String.fromCharCode(buf[i]);
        }
        bb.push(str);
      } else if (get_class(data) === "Blob" || get_class(data) === "File") {
        if (FileReaderSync) {
          var fr = new FileReaderSync;
          bb.push(fr.readAsBinaryString(data));
        } else {
          // async FileReader won't work as BlobBuilder is sync
          throw new FileException("NOT_READABLE_ERR");
        }
      } else if (data instanceof FakeBlob) {
        if (data.encoding === "base64" && atob) {
          bb.push(atob(data.data));
        } else if (data.encoding === "URI") {
          bb.push(decodeURIComponent(data.data));
        } else if (data.encoding === "raw") {
          bb.push(data.data);
        }
      } else {
        if (typeof data !== "string") {
          data += ""; // convert unsupported types to strings
        }
        // decode UTF-16 to binary string
        bb.push(unescape(encodeURIComponent(data)));
      }
    };
    FBB_proto.getBlob = function(type) {
      if (!arguments.length) {
        type = null;
      }
      return new FakeBlob(this.data.join(""), type, "raw");
    };
    FBB_proto.toString = function() {
      return "[object BlobBuilder]";
    };
    FB_proto.slice = function(start, end, type) {
      var args = arguments.length;
      if (args < 3) {
        type = null;
      }
      return new FakeBlob(
          this.data.slice(start, args > 1 ? end : this.data.length)
        , type
        , this.encoding
      );
    };
    FB_proto.toString = function() {
      return "[object Blob]";
    };
    return FakeBlobBuilder;
  }(view));

  return function Blob(blobParts, options) {
    var type = options ? (options.type || "") : "";
    var builder = new BlobBuilder();
    if (blobParts) {
      for (var i = 0, len = blobParts.length; i < len; i++) {
        builder.append(blobParts[i]);
      }
    }
    return builder.getBlob(type);
  };
}(self));

/* FileSaver.js
 * A saveAs() FileSaver implementation.
 * 2013-01-23
 *
 * By Eli Grey, http://eligrey.com
 * License: X11/MIT
 *   See LICENSE.md
 */

/*global self */
/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,
  plusplus: true */

/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */

var saveAs = saveAs
  || (navigator.msSaveOrOpenBlob && navigator.msSaveOrOpenBlob.bind(navigator))
  || (function(view) {
  "use strict";
  var
      doc = view.document
      // only get URL when necessary in case BlobBuilder.js hasn't overridden it yet
    , get_URL = function() {
      return view.URL || view.webkitURL || view;
    }
    , URL = view.URL || view.webkitURL || view
    , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
    , can_use_save_link =  !view.externalHost && "download" in save_link
    , click = function(node) {
      var event = doc.createEvent("MouseEvents");
      event.initMouseEvent(
        "click", true, false, view, 0, 0, 0, 0, 0
        , false, false, false, false, 0, null
      );
      node.dispatchEvent(event);
    }
    , webkit_req_fs = view.webkitRequestFileSystem
    , req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem
    , throw_outside = function (ex) {
      (view.setImmediate || view.setTimeout)(function() {
        throw ex;
      }, 0);
    }
    , force_saveable_type = "application/octet-stream"
    , fs_min_size = 0
    , deletion_queue = []
    , process_deletion_queue = function() {
      var i = deletion_queue.length;
      while (i--) {
        var file = deletion_queue[i];
        if (typeof file === "string") { // file is an object URL
          URL.revokeObjectURL(file);
        } else { // file is a File
          file.remove();
        }
      }
      deletion_queue.length = 0; // clear queue
    }
    , dispatch = function(filesaver, event_types, event) {
      event_types = [].concat(event_types);
      var i = event_types.length;
      while (i--) {
        var listener = filesaver["on" + event_types[i]];
        if (typeof listener === "function") {
          try {
            listener.call(filesaver, event || filesaver);
          } catch (ex) {
            throw_outside(ex);
          }
        }
      }
    }
    , FileSaver = function(blob, name) {
      // First try a.download, then web filesystem, then object URLs
      var
          filesaver = this
        , type = blob.type
        , blob_changed = false
        , object_url
        , target_view
        , get_object_url = function() {
          var object_url = get_URL().createObjectURL(blob);
          deletion_queue.push(object_url);
          return object_url;
        }
        , dispatch_all = function() {
          dispatch(filesaver, "writestart progress write writeend".split(" "));
        }
        // on any filesys errors revert to saving with object URLs
        , fs_error = function() {
          // don't create more object URLs than needed
          if (blob_changed || !object_url) {
            object_url = get_object_url(blob);
          }
          if (target_view) {
            target_view.location.href = object_url;
          } else {
                        window.open(object_url, "_blank");
                    }
          filesaver.readyState = filesaver.DONE;
          dispatch_all();
        }
        , abortable = function(func) {
          return function() {
            if (filesaver.readyState !== filesaver.DONE) {
              return func.apply(this, arguments);
            }
          };
        }
        , create_if_not_found = {create: true, exclusive: false}
        , slice
      ;
      filesaver.readyState = filesaver.INIT;
      if (!name) {
        name = "download";
      }
      if (can_use_save_link) {
        object_url = get_object_url(blob);
        save_link.href = object_url;
        save_link.download = name;
        click(save_link);
        filesaver.readyState = filesaver.DONE;
        dispatch_all();
        return;
      }
      // Object and web filesystem URLs have a problem saving in Google Chrome when
      // viewed in a tab, so I force save with application/octet-stream
      // http://code.google.com/p/chromium/issues/detail?id=91158
      if (view.chrome && type && type !== force_saveable_type) {
        slice = blob.slice || blob.webkitSlice;
        blob = slice.call(blob, 0, blob.size, force_saveable_type);
        blob_changed = true;
      }
      // Since I can't be sure that the guessed media type will trigger a download
      // in WebKit, I append .download to the filename.
      // https://bugs.webkit.org/show_bug.cgi?id=65440
      if (webkit_req_fs && name !== "download") {
        name += ".download";
      }
      if (type === force_saveable_type || webkit_req_fs) {
        target_view = view;
      }
      if (!req_fs) {
        fs_error();
        return;
      }
      fs_min_size += blob.size;
      req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) {
        fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) {
          var save = function() {
            dir.getFile(name, create_if_not_found, abortable(function(file) {
              file.createWriter(abortable(function(writer) {
                writer.onwriteend = function(event) {
                  target_view.location.href = file.toURL();
                  deletion_queue.push(file);
                  filesaver.readyState = filesaver.DONE;
                  dispatch(filesaver, "writeend", event);
                };
                writer.onerror = function() {
                  var error = writer.error;
                  if (error.code !== error.ABORT_ERR) {
                    fs_error();
                  }
                };
                "writestart progress write abort".split(" ").forEach(function(event) {
                  writer["on" + event] = filesaver["on" + event];
                });
                writer.write(blob);
                filesaver.abort = function() {
                  writer.abort();
                  filesaver.readyState = filesaver.DONE;
                };
                filesaver.readyState = filesaver.WRITING;
              }), fs_error);
            }), fs_error);
          };
          dir.getFile(name, {create: false}, abortable(function(file) {
            // delete file if it already exists
            file.remove();
            save();
          }), abortable(function(ex) {
            if (ex.code === ex.NOT_FOUND_ERR) {
              save();
            } else {
              fs_error();
            }
          }));
        }), fs_error);
      }), fs_error);
    }
    , FS_proto = FileSaver.prototype
    , saveAs = function(blob, name) {
      return new FileSaver(blob, name);
    }
  ;
  FS_proto.abort = function() {
    var filesaver = this;
    filesaver.readyState = filesaver.DONE;
    dispatch(filesaver, "abort");
  };
  FS_proto.readyState = FS_proto.INIT = 0;
  FS_proto.WRITING = 1;
  FS_proto.DONE = 2;

  FS_proto.error =
  FS_proto.onwritestart =
  FS_proto.onprogress =
  FS_proto.onwrite =
  FS_proto.onabort =
  FS_proto.onerror =
  FS_proto.onwriteend =
    null;

  view.addEventListener("unload", process_deletion_queue, false);
  return saveAs;
}(self));

if (typeof module !== 'undefined') module.exports = saveAs;

//
//  Backbone-associations.js 0.6.1
//
//  (c) 2013 Dhruva Ray, Jaynti Kanani, Persistent Systems Ltd.
//  Backbone-associations may be freely distributed under the MIT license.
//  For all details and documentation:
//  https://github.com/dhruvaray/backbone-associations/
//

(function(root, factory) {
    // Set up Backbone-associations appropriately for the environment. Start with AMD.
    if (typeof define === 'function' && define.amd) {
        define(['underscore', 'backbone'], function(_, Backbone) {
            // Export global even in AMD case in case this script is loaded with
            // others that may still expect a global Backbone.
            return factory(root, Backbone, _);
        });

    // Next for Node.js or CommonJS.
    } else if (typeof exports !== 'undefined') {
        var _ = require('underscore'),
            Backbone = require('backbone');
        factory(root, Backbone, _);
        if (typeof module !== 'undefined' && module.exports) {
            module.exports = Backbone;
        }
        exports = Backbone;

    // Finally, as a browser global.
    } else {
        factory(root, root.Backbone, root._);
    }

}(this, function(root, Backbone, _) {
    "use strict";

    // Initial Setup
    // --------------

    // The top-level namespace. All public Backbone classes and modules will be attached to this.
    // Exported for the browser and CommonJS.
    var BackboneModel, BackboneCollection, ModelProto, BackboneEvent,
        CollectionProto, AssociatedModel, pathChecker,
        delimiters, pathSeparator, sourceModel, sourceKey, endPoints = {};

    // Create local reference `Model` prototype.
    BackboneModel = Backbone.Model;
    BackboneCollection = Backbone.Collection;
    ModelProto = BackboneModel.prototype;
    CollectionProto = BackboneCollection.prototype;
    BackboneEvent = Backbone.Events;

    Backbone.Associations = {
        VERSION: "0.6.1"
    };

    // Alternative scopes other than root
    Backbone.Associations.scopes = [];

    // Define `getter` and `setter` for `separator`
    var getSeparator = function() {
        return pathSeparator;
    };
    // Define `setSeperator`
    var setSeparator = function(value) {
        if (!_.isString(value) || _.size(value) < 1) {
            value = ".";
        }
        // set private properties
        pathSeparator = value;
        pathChecker = new RegExp("[\\" + pathSeparator + "\\[\\]]+", "g");
        delimiters = new RegExp("[^\\" + pathSeparator + "\\[\\]]+", "g");
    };

    try {
        // Define `SEPERATOR` property to Backbone.Associations
        Object.defineProperty(Backbone.Associations, 'SEPARATOR', {
            enumerable: true,
            get: getSeparator,
            set: setSeparator
        });
    } catch (e) {}

    // Backbone.AssociatedModel
    // --------------

    //Add `Many` and `One` relations to Backbone Object.
    Backbone.Associations.Many = Backbone.Many = "Many";
    Backbone.Associations.One = Backbone.One = "One";
    Backbone.Associations.Self = Backbone.Self = "Self";
    // Set default separator
    Backbone.Associations.SEPARATOR = ".";
    Backbone.Associations.getSeparator = getSeparator;
    Backbone.Associations.setSeparator = setSeparator;

    Backbone.Associations.EVENTS_BUBBLE = true;
    Backbone.Associations.EVENTS_WILDCARD = true;
    Backbone.Associations.EVENTS_NC = false;


    setSeparator();

    // Define `AssociatedModel` (Extends Backbone.Model).
    AssociatedModel = Backbone.AssociatedModel = Backbone.Associations.AssociatedModel = BackboneModel.extend({
        // Define relations with Associated Model.
        relations:undefined,
        // Define `Model` property which can keep track of already fired `events`,
        // and prevent redundant event to be triggered in case of cyclic model graphs.
        _proxyCalls:undefined,

        // Override constructor to set parents
        constructor: function (attributes, options) {
            // Set parent's opportunistically.
            options && options.__parents__ && (this.parents = [options.__parents__]);
            BackboneModel.apply(this, arguments);
        },

        on: function (name, callback, context) {

            var result = BackboneEvent.on.apply(this, arguments);

            // No optimization possible if nested-events is wanted by the application
            if (Backbone.Associations.EVENTS_NC) return result;

            // Regular expression used to split event strings.
            var eventSplitter = /\s+/;

            // Handle atomic event names only
            if (_.isString(name) && name && (!eventSplitter.test(name)) && callback) {
                var endPoint = getPathEndPoint(name);
                if (endPoint) {
                    //Increment end point counter. Represents # of nodes which listen to this end point
                    endPoints[endPoint] = (typeof endPoints[endPoint] === 'undefined') ? 1 : (endPoints[endPoint] + 1);
                }
            }
            return result;
        },

        off: function (name, callback, context) {

            // No optimization possible if nested-events is wanted by the application
            if (Backbone.Associations.EVENTS_NC) return BackboneEvent.off.apply(this, arguments);

            var eventSplitter = /\s+/,
                events = this._events,
                listeners = {},
                names = events ? _.keys(events) : [],
                all = (!name && !callback && !context),
                atomic_event = (_.isString(name) && (!eventSplitter.test(name)));

            if (all || atomic_event) {
                for (var i = 0, l = names.length; i < l; i++) {
                    // Store the # of callbacks listening to the event name prior to the `off` call
                    listeners[names[i]] = events[names[i]] ? events[names[i]].length : 0;
                }
            }
            // Call Backbone off implementation
            var result = BackboneEvent.off.apply(this, arguments);

            if (all || atomic_event) {
                for (i = 0, l = names.length; i < l; i++) {
                    var endPoint = getPathEndPoint(names[i]);
                    if (endPoint) {
                        if (events[names[i]]) {
                            // Some listeners wiped out for this name for this object
                            endPoints[endPoint] -= (listeners[names[i]] - events[names[i]].length);
                        } else {
                            // All listeners wiped out for this name for this object
                            endPoints[endPoint] -= listeners[names[i]];
                        }
                    }
                }
            }
            return result;
        },

        // Get the value of an attribute.
        get:function (attr) {
            var cache = this.__attributes__,
                val = ModelProto.get.call(this, attr),
                obj = cache ? val || cache[attr] : val;
            return obj ? obj : this._getAttr.apply(this, arguments);
        },

        // Set a hash of model attributes on the Backbone Model.
        set:function (key, value, options) {
            var attributes, result;
            // Duplicate backbone's behavior to allow separate key/value parameters,
            // instead of a single 'attributes' object.
            if (_.isObject(key) || key == null) {
                attributes = key;
                options = value;
            } else {
                attributes = {};
                attributes[key] = value;
            }
            result = this._set(attributes, options);
            // Trigger events which have been blocked until the entire object graph is updated.
            this._processPendingEvents();
            return result;

        },

        // Works with an attribute hash and options + fully qualified paths
        _set:function (attributes, options) {
            var attr, modelMap, modelId, obj, result = this;
            if (!attributes) return this;

            // temp cache of attributes
            this.__attributes__ = attributes;

            for (attr in attributes) {
                //Create a map for each unique object whose attributes we want to set
                modelMap || (modelMap = {});
                if (attr.match(pathChecker)) {
                    var pathTokens = getPathArray(attr), initials = _.initial(pathTokens),
                        last = pathTokens[pathTokens.length - 1],
                        parentModel = this.get(initials);
                    if (parentModel instanceof BackboneModel) {
                        obj = modelMap[parentModel.cid] ||
                            (modelMap[parentModel.cid] = {'model': parentModel, 'data': {}});
                        obj.data[last] = attributes[attr];
                    }
                } else {
                    obj = modelMap[this.cid] || (modelMap[this.cid] = {'model':this, 'data':{}});
                    obj.data[attr] = attributes[attr];
                }
            }

            if (modelMap) {
                for (modelId in modelMap) {
                    obj = modelMap[modelId];
                    this._setAttr.call(obj.model, obj.data, options) || (result = false);

                }
            } else {
                result = this._setAttr.call(this, attributes, options);
            }
            delete this.__attributes__;

            return result;

        },

        // Set a hash of model attributes on the object,
        // fire Backbone `event` with options.
        // It maintains relations between models during the set operation.
        // It also bubbles up child events to the parent.
        _setAttr:function (attributes, options) {
            var attr;
            // Extract attributes and options.
            options || (options = {});
            if (options.unset) for (attr in attributes) attributes[attr] = void 0;
            this.parents = this.parents || [];

            if (this.relations) {
                // Iterate over `this.relations` and `set` model and collection values
                // if `relations` are available.
                _.each(this.relations, function (relation) {
                    var relationKey = relation.key,
                        activationContext = relation.scope || root,
                        relatedModel = this._transformRelatedModel(relation, attributes),
                        collectionType = this._transformCollectionType(relation, relatedModel, attributes),
                        map = _.isString(relation.map) ? map2Scope(relation.map, activationContext) : relation.map,
                        currVal = this.attributes[relationKey],
                        idKey = currVal && currVal.idAttribute,
                        val, relationOptions, data, relationValue, newCtx = false;

                    // Merge in `options` specific to this relation.
                    relationOptions = relation.options ? _.extend({}, relation.options, options) : options;

                    if (attributes[relationKey]) {

                        // Get value of attribute with relation key in `val`.
                        val = _.result(attributes, relationKey);

                        // Map `val` if a transformation function is provided.
                        val = map ? map.call(this, val, collectionType ? collectionType : relatedModel) : val;
                        if(!val) {
                            attributes[relationKey] = val;
                            return;
                        }

                        // If `relation.type` is `Backbone.Many`,
                        // Create `Backbone.Collection` with passed data and perform Backbone `set`.
                        if (relation.type === Backbone.Many) {

                            if (currVal) {
                                // Setting this flag will prevent events from firing immediately. That way clients
                                // will not get events until the entire object graph is updated.
                                currVal._deferEvents = true;

                                // Use Backbone.Collection's `reset` or smart `set` method
                                currVal[relationOptions.reset ? 'reset' : 'set'](
                                    val instanceof BackboneCollection ? val.models : val, relationOptions);

                                data = currVal;

                            } else {
                                newCtx = true;

                                if (val instanceof BackboneCollection) {
                                    data = val;
                                } else {
                                    data = this._createCollection(
                                        collectionType || BackboneCollection,
                                        relation.collectionOptions || (relatedModel ? {model: relatedModel} : {})
                                    );
                                    data[relationOptions.reset ? 'reset' : 'set'](val, relationOptions);
                                }
                            }

                        } else if (relation.type === Backbone.One) {

                            var hasOwnProperty = (val instanceof BackboneModel) ?
                                val.attributes.hasOwnProperty(idKey) :
                                val.hasOwnProperty(idKey);
                            var newIdKey = (val instanceof BackboneModel) ?
                                val.attributes[idKey] :
                                val[idKey];

                            //Is the passed in data for the same key?
                            if (currVal && hasOwnProperty &&
                                currVal.attributes[idKey] === newIdKey) {
                                // Setting this flag will prevent events from firing immediately. That way clients
                                // will not get events until the entire object graph is updated.
                                currVal._deferEvents = true;
                                // Perform the traditional `set` operation
                                currVal._set(val instanceof BackboneModel ? val.attributes : val, relationOptions);
                                data = currVal;
                            } else {
                                newCtx = true;

                                if (val instanceof BackboneModel) {
                                    data = val;
                                } else {
                                    relationOptions.__parents__ = this;
                                    data = new relatedModel(val, relationOptions);
                                    delete relationOptions.__parents__;
                                }

                            }
                        } else {
                            throw new Error('type attribute must be specified and ' +
                                'have the values Backbone.One or Backbone.Many');
                        }


                        attributes[relationKey] = data;
                        relationValue = data;

                        // Add proxy events to respective parents.
                        // Only add callback if not defined or new Ctx has been identified.
                        if (newCtx || (relationValue && !relationValue._proxyCallback)) {
                            if(!relationValue._proxyCallback) {
                              relationValue._proxyCallback = function () {
                                  return Backbone.Associations.EVENTS_BUBBLE &&
                                      this._bubbleEvent.call(this, relationKey, relationValue, arguments);
                              };
                            }
                            relationValue.on("all", relationValue._proxyCallback, this);
                        }

                    }
                    //Distinguish between the value of undefined versus a set no-op
                    if (attributes.hasOwnProperty(relationKey))
                        this._setupParents(attributes[relationKey], this.attributes[relationKey]);
                }, this);
            }
            // Return results for `BackboneModel.set`.
            return  ModelProto.set.call(this, attributes, options);
        },


        // Bubble-up event to `parent` Model
        _bubbleEvent:function (relationKey, relationValue, eventArguments) {
            var args = eventArguments,
                opt = args[0].split(":"),
                eventType = opt[0],
                catch_all = args[0] == "nested-change",
                isChangeEvent = eventType === "change",
                eventObject = args[1],
                indexEventObject = -1,
                _proxyCalls = relationValue._proxyCalls,
                cargs,
                eventPath = opt[1],
                eSrc = !eventPath || (eventPath.indexOf(pathSeparator) == -1),
                basecolEventPath;


            // Short circuit the listen in to the nested-graph event
            if (catch_all) return;

            // Record the source of the event
            if (eSrc) sourceKey = (getPathEndPoint(args[0]) || relationKey);

            // Short circuit the event bubbling as there are no listeners for this end point
            if (!Backbone.Associations.EVENTS_NC && !endPoints[sourceKey]) return;

            // Short circuit the listen in to the wild-card event
            if (Backbone.Associations.EVENTS_WILDCARD) {
                if (/\[\*\]/g.test(eventPath)) return this;
            }

            if (relationValue instanceof BackboneCollection && (isChangeEvent || eventPath)) {
                // O(n) search :(
                indexEventObject = relationValue.indexOf(sourceModel || eventObject);
            }

            if (this instanceof BackboneModel) {
                // A quicker way to identify the model which caused an update inside the collection (while bubbling up)
                sourceModel = this;
            }
            // Manipulate `eventPath`.
            eventPath = relationKey + ((indexEventObject !== -1 && (isChangeEvent || eventPath)) ?
                "[" + indexEventObject + "]" : "") + (eventPath ? pathSeparator + eventPath : "");

            // Short circuit collection * events

            if (Backbone.Associations.EVENTS_WILDCARD) {
                basecolEventPath = eventPath.replace(/\[\d+\]/g, '[*]');
            }

            cargs = [];
            cargs.push.apply(cargs, args);
            cargs[0] = eventType + ":" + eventPath;

            // Create a collection modified event with wild-card
            if (Backbone.Associations.EVENTS_WILDCARD && eventPath !== basecolEventPath) {
                cargs[0] = cargs[0] + " " + eventType + ":" + basecolEventPath;
            }

            // If event has been already triggered as result of same source `eventPath`,
            // no need to re-trigger event to prevent cycle.
            _proxyCalls = relationValue._proxyCalls = (_proxyCalls || {});
            if (this._isEventAvailable.call(this, _proxyCalls, eventPath)) return this;

            // Add `eventPath` in `_proxyCalls` to keep track of already triggered `event`.
            _proxyCalls[eventPath] = true;


            // Set up previous attributes correctly.
            if (isChangeEvent) {
                this._previousAttributes[relationKey] = relationValue._previousAttributes;
                this.changed[relationKey] = relationValue;
            }


            // Bubble up event to parent `model` with new changed arguments.

            this.trigger.apply(this, cargs);

            //Only fire for change. Not change:attribute
            if (Backbone.Associations.EVENTS_NC && isChangeEvent && this.get(eventPath) != args[2]) {
                var ncargs = ["nested-change", eventPath, args[1]];
                args[2] && ncargs.push(args[2]); //args[2] will be options if present
                this.trigger.apply(this, ncargs);
            }

            // Remove `eventPath` from `_proxyCalls`,
            // if `eventPath` and `_proxyCalls` are available,
            // which allow event to be triggered on for next operation of `set`.
            if (_proxyCalls && eventPath) delete _proxyCalls[eventPath];

            sourceModel = undefined;

            return this;
        },

        // Has event been fired from this source. Used to prevent event recursion in cyclic graphs
        _isEventAvailable:function (_proxyCalls, path) {
            return _.find(_proxyCalls, function (value, eventKey) {
                return path.indexOf(eventKey, path.length - eventKey.length) !== -1;
            });
        },

        //Maintain reverse pointers - a.k.a parents
        _setupParents: function (updated, original) {
            // Set new parent for updated
            if (updated) {
                updated.parents = updated.parents || [];
                (_.indexOf(updated.parents, this) == -1) && updated.parents.push(this);
            }
            // Remove `this` from the earlier set value's parents (if the new value is different).
            if (original && original.parents.length > 0 && original != updated) {
                original.parents = _.difference(original.parents, [this]);
                // Don't bubble to this parent anymore
                original._proxyCallback && original.off("all", original._proxyCallback, this);
            }
        },

        // Returns new `collection` (or derivatives) of type `options.model`.
        _createCollection: function (type, options) {
            options = _.defaults(options, {model: type.model});
            var c = new type([], _.isFunction(options) ? options.call(this) : options);
            c.parents = [this];
            return c;
        },

        // Process all pending events after the entire object graph has been updated
        _processPendingEvents:function () {
            if (!this._processedEvents) {
                this._processedEvents = true;

                this._deferEvents = false;

                // Trigger all pending events
                _.each(this._pendingEvents, function (e) {
                    e.c.trigger.apply(e.c, e.a);
                });

                this._pendingEvents = [];

                // Traverse down the object graph and call process pending events on sub-trees
                _.each(this.relations, function (relation) {
                    var val = this.attributes[relation.key];
                    val && val._processPendingEvents && val._processPendingEvents();
                }, this);

                delete this._processedEvents;
            }
        },

        // Process the raw `relatedModel` value set in a relation
        _transformRelatedModel: function (relation, attributes) {

            var relatedModel = relation.relatedModel;
            var activationContext = relation.scope || root;

            // Call function if relatedModel is implemented as a function
            if (relatedModel && !(relatedModel.prototype instanceof BackboneModel))
                relatedModel = _.isFunction(relatedModel) ?
                    relatedModel.call(this, relation, attributes) :
                    relatedModel;

            // Get class if relation and map is stored as a string.
            if (relatedModel && _.isString(relatedModel)) {
                relatedModel = (relatedModel === Backbone.Self) ?
                    this.constructor :
                    map2Scope(relatedModel, activationContext);
            }

            // Error checking
            if (relation.type === Backbone.One) {

                if (!relatedModel)
                    throw new Error('specify a relatedModel for Backbone.One type');

                if (!(relatedModel.prototype instanceof Backbone.Model))
                    throw new Error('specify an AssociatedModel or Backbone.Model for Backbone.One type');
            }

            return relatedModel;
        },

        // Process the raw `collectionType` value set in a relation
        _transformCollectionType: function (relation, relatedModel, attributes) {

            var collectionType = relation.collectionType;
            var activationContext = relation.scope || root;

            if (collectionType && _.isFunction(collectionType) &&
                (collectionType.prototype instanceof BackboneModel))
                throw new Error('type is of Backbone.Model. Specify derivatives of Backbone.Collection');

            // Call function if collectionType is implemented as a function
            if (collectionType && !(collectionType.prototype instanceof BackboneCollection))
                collectionType = _.isFunction(collectionType) ?
                    collectionType.call(this, relation, attributes) : collectionType;

            collectionType && _.isString(collectionType) &&
            (collectionType = map2Scope(collectionType, activationContext));

            // `collectionType` of defined `relation` should be instance of `Backbone.Collection`.
            if (collectionType && !collectionType.prototype instanceof BackboneCollection) {
                throw new Error('collectionType must inherit from Backbone.Collection');
            }

            // Error checking
            if (relation.type === Backbone.Many) {
                if ((!relatedModel) && (!collectionType))
                    throw new Error('specify either a relatedModel or collectionType');
            }

            return collectionType;

        },

        // Override trigger to defer events in the object graph.
        trigger:function (name) {
            // Defer event processing
            if (this._deferEvents) {
                this._pendingEvents = this._pendingEvents || [];
                // Maintain a queue of pending events to trigger after the entire object graph is updated.
                this._pendingEvents.push({c:this, a:arguments});
            } else {
                ModelProto.trigger.apply(this, arguments);
            }
        },

        // The JSON representation of the model.
        toJSON:function (options) {
            var json = {}, aJson;
            json[this.idAttribute] = this.id;
            if (!this.visited) {
                this.visited = true;
                // Get json representation from `BackboneModel.toJSON`.
                json = ModelProto.toJSON.apply(this, arguments);

                // Pick up only the keys you want to serialize
                if (options && options.serialize_keys) {
                    json = _.pick(json, options.serialize_keys);
                }
                // If `this.relations` is defined, iterate through each `relation`
                // and added it's json representation to parents' json representation.
                if (this.relations) {
                    _.each(this.relations, function (relation) {
                        var key = relation.key,
                            remoteKey = relation.remoteKey,
                            attr = this.attributes[key],
                            serialize = !relation.isTransient,
                            serialize_keys = relation.serialize || [],
                            _options = _.clone(options);

                        // Remove default Backbone serialization for associations.
                        delete json[key];

                        //Assign to remoteKey if specified. Otherwise use the default key.
                        //Only for non-transient relationships
                        if (serialize) {

                            // Pass the keys to serialize as options to the toJSON method.
                            if (serialize_keys.length) {
                                _options ?
                                    (_options.serialize_keys = serialize_keys) :
                                    (_options = {serialize_keys: serialize_keys})
                            }

                            aJson = attr && attr.toJSON ? attr.toJSON(_options) : attr;
                            json[remoteKey || key] = _.isArray(aJson) ? _.compact(aJson) : aJson;
                        }

                    }, this);
                }

                delete this.visited;
            }
            return json;
        },

        // Create a new model with identical attributes to this one.
        clone: function (options) {
            return new this.constructor(this.toJSON(options));
        },

        // Call this if you want to set an `AssociatedModel` to a falsy value like undefined/null directly.
        // Not calling this will leak memory and have wrong parents.
        // See test case "parent relations"
        cleanup:function (options) {
            options = options || {};

            _.each(this.relations, function (relation) {
                var val = this.attributes[relation.key];
                if(val) {
                    val._proxyCallback && val.off("all", val._proxyCallback, this);
                    val.parents = _.difference(val.parents, [this]);
                }
            }, this);
            
            (!options.listen) && this.off();
        },

        // Override destroy to perform house-keeping on `parents` collection
        destroy: function(options) {
            options = options ? _.clone(options) : {};
            options = _.defaults(options, {remove_references: true, listen: true});
            var model = this;

            if(options.remove_references && options.wait) {
                // Proxy success implementation
                var success = options.success;

                // Substitute with an implementation which will remove references to `model`
                options.success = function (resp) {
                    if (success) success(model, resp, options);
                    model.cleanup(options);
                }
            }
            // Call the base implementation
            var xhr =  ModelProto.destroy.apply(this, [options]);

            if(options.remove_references && !options.wait) {
                model.cleanup(options);
            }

            return xhr;
        },

        // Navigate the path to the leaf object in the path to query for the attribute value
        _getAttr:function (path) {

            var result = this,
                cache = this.__attributes__,
            //Tokenize the path
                attrs = getPathArray(path),
                key,
                i;
            if (_.size(attrs) < 1) return;
            for (i = 0; i < attrs.length; i++) {
                key = attrs[i];
                if (!result) break;
                //Navigate the path to get to the result
                result = result instanceof BackboneCollection
                    ? (isNaN(key) ? undefined : result.at(key))
                    : (cache ? result.attributes[key] || cache[key] : result.attributes[key]);
            }
            return result;
        }
    });

    // Tokenize the fully qualified event path
    var getPathArray = function (path) {
        if (path === '') return [''];
        return _.isString(path) ? (path.match(delimiters)) : path || [];
    };

    // Get the end point of the path.
    var getPathEndPoint = function (path) {

        if (!path) return path;

        // event_type:<path>
        var tokens = path.split(":");

        if (tokens.length > 1) {
            path = tokens[tokens.length - 1];
            tokens = path.split(pathSeparator);
            return tokens.length > 1 ? tokens[tokens.length - 1].split('[')[0] : tokens[0].split('[')[0];
        } else {
            //path of 0 depth
            return "";
        }

    };

    var map2Scope = function (path, context) {
        var target,
            scopes = [context];

        // Check global scopes after passed-in context
        scopes.push.apply(scopes, Backbone.Associations.scopes);

        for (var ctx, i = 0, l = scopes.length; i < l; ++i) {
            if (ctx = scopes[i]) {
                target = _.reduce(path.split(pathSeparator), function (memo, elem) {
                    return memo[elem];
                }, ctx);
                if (target) break;
            }
        }
        return target;
    };


    // Infer the relation from the collection's parents and find the appropriate map for the passed in `models`
    var map2models = function (parents, target, models) {
        var relation, surrogate;
        //Iterate over collection's parents
        _.find(parents, function (parent) {
            //Iterate over relations
            relation = _.find(parent.relations, function (rel) {
                return parent.get(rel.key) === target;
            }, this);
            if (relation) {
                surrogate = parent;//surrogate for transformation
                return true;//break;
            }
        }, this);

        //If we found a relation and it has a mapping function
        if (relation && relation.map) {
            return relation.map.call(surrogate, models, target);
        }
        return models;
    };

    var proxies = {};
    // Proxy Backbone collection methods
    _.each(['set', 'remove', 'reset'], function (method) {
        proxies[method] = BackboneCollection.prototype[method];

        CollectionProto[method] = function (models, options) {
            //Short-circuit if this collection doesn't hold `AssociatedModels`
            if (this.model.prototype instanceof AssociatedModel && this.parents) {
                //Find a map function if available and perform a transformation
                arguments[0] = map2models(this.parents, this, models);
            }
            return proxies[method].apply(this, arguments);
        }
    });

    // Override trigger to defer events in the object graph.
    proxies['trigger'] = CollectionProto['trigger'];
    CollectionProto['trigger'] = function (name) {
        if (this._deferEvents) {
            this._pendingEvents = this._pendingEvents || [];
            // Maintain a queue of pending events to trigger after the entire object graph is updated.
            this._pendingEvents.push({c:this, a:arguments});
        } else {
            proxies['trigger'].apply(this, arguments);
        }
    };

    // Attach process pending event functionality on collections as well. Re-use from `AssociatedModel`
    CollectionProto._processPendingEvents = AssociatedModel.prototype._processPendingEvents;
    CollectionProto.on = AssociatedModel.prototype.on;
    CollectionProto.off = AssociatedModel.prototype.off;

    return Backbone;
}));

/* ===================================================
 * bootstrap-transition.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#transitions
 * ===================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ========================================================== */


!function ($) {

  "use strict"; // jshint ;_;


  /* CSS TRANSITION SUPPORT (http://www.modernizr.com/)
   * ======================================================= */

  $(function () {

    $.support.transition = (function () {

      var transitionEnd = (function () {

        var el = document.createElement('bootstrap')
          , transEndEventNames = {
               'WebkitTransition' : 'webkitTransitionEnd'
            ,  'MozTransition'    : 'transitionend'
            ,  'OTransition'      : 'oTransitionEnd otransitionend'
            ,  'transition'       : 'transitionend'
            }
          , name

        for (name in transEndEventNames){
          if (el.style[name] !== undefined) {
            return transEndEventNames[name]
          }
        }

      }())

      return transitionEnd && {
        end: transitionEnd
      }

    })()

  })

}(window.jQuery);
/* =========================================================
 * bootstrap-modal.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#modals
 * =========================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ========================================================= */


!function ($) {

  "use strict"; // jshint ;_;


 /* MODAL CLASS DEFINITION
  * ====================== */

  var Modal = function (element, options) {
    this.options = options
    this.$element = $(element)
      .delegate('[data-dismiss="modal"]', 'click.dismiss.modal', $.proxy(this.hide, this))
    this.options.remote && this.$element.find('.modal-body').load(this.options.remote)
  }

  Modal.prototype = {

      constructor: Modal

    , toggle: function () {
        return this[!this.isShown ? 'show' : 'hide']()
      }

    , show: function () {
        var that = this
          , e = $.Event('show')

        this.$element.trigger(e)

        if (this.isShown || e.isDefaultPrevented()) return

        this.isShown = true

        this.escape()

        this.backdrop(function () {
          var transition = $.support.transition && that.$element.hasClass('fade')

          if (!that.$element.parent().length) {
            that.$element.appendTo(document.body) //don't move modals dom position
          }

          that.$element.show()

          if (transition) {
            that.$element[0].offsetWidth // force reflow
          }

          that.$element
            .addClass('in')
            .attr('aria-hidden', false)

          that.enforceFocus()

          transition ?
            that.$element.one($.support.transition.end, function () { that.$element.focus().trigger('shown') }) :
            that.$element.focus().trigger('shown')

        })
      }

    , hide: function (e) {
        e && e.preventDefault()

        var that = this

        e = $.Event('hide')

        this.$element.trigger(e)

        if (!this.isShown || e.isDefaultPrevented()) return

        this.isShown = false

        this.escape()

        $(document).off('focusin.modal')

        this.$element
          .removeClass('in')
          .attr('aria-hidden', true)

        $.support.transition && this.$element.hasClass('fade') ?
          this.hideWithTransition() :
          this.hideModal()
      }

    , enforceFocus: function () {
        var that = this
        $(document).on('focusin.modal', function (e) {
          if (that.$element[0] !== e.target && !that.$element.has(e.target).length) {
            that.$element.focus()
          }
        })
      }

    , escape: function () {
        var that = this
        if (this.isShown && this.options.keyboard) {
          this.$element.on('keyup.dismiss.modal', function ( e ) {
            e.which == 27 && that.hide()
          })
        } else if (!this.isShown) {
          this.$element.off('keyup.dismiss.modal')
        }
      }

    , hideWithTransition: function () {
        var that = this
          , timeout = setTimeout(function () {
              that.$element.off($.support.transition.end)
              that.hideModal()
            }, 500)

        this.$element.one($.support.transition.end, function () {
          clearTimeout(timeout)
          that.hideModal()
        })
      }

    , hideModal: function () {
        var that = this
        this.$element.hide()
        this.backdrop(function () {
          that.removeBackdrop()
          that.$element.trigger('hidden')
        })
      }

    , removeBackdrop: function () {
        this.$backdrop && this.$backdrop.remove()
        this.$backdrop = null
      }

    , backdrop: function (callback) {
        var that = this
          , animate = this.$element.hasClass('fade') ? 'fade' : ''

        if (this.isShown && this.options.backdrop) {
          var doAnimate = $.support.transition && animate

          this.$backdrop = $('<div class="modal-backdrop ' + animate + '" />')
            .appendTo(document.body)

          this.$backdrop.click(
            this.options.backdrop == 'static' ?
              $.proxy(this.$element[0].focus, this.$element[0])
            : $.proxy(this.hide, this)
          )

          if (doAnimate) this.$backdrop[0].offsetWidth // force reflow

          this.$backdrop.addClass('in')

          if (!callback) return

          doAnimate ?
            this.$backdrop.one($.support.transition.end, callback) :
            callback()

        } else if (!this.isShown && this.$backdrop) {
          this.$backdrop.removeClass('in')

          $.support.transition && this.$element.hasClass('fade')?
            this.$backdrop.one($.support.transition.end, callback) :
            callback()

        } else if (callback) {
          callback()
        }
      }
  }


 /* MODAL PLUGIN DEFINITION
  * ======================= */

  var old = $.fn.modal

  $.fn.modal = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('modal')
        , options = $.extend({}, $.fn.modal.defaults, $this.data(), typeof option == 'object' && option)
      if (!data) $this.data('modal', (data = new Modal(this, options)))
      if (typeof option == 'string') data[option]()
      else if (options.show) data.show()
    })
  }

  $.fn.modal.defaults = {
      backdrop: true
    , keyboard: true
    , show: true
  }

  $.fn.modal.Constructor = Modal


 /* MODAL NO CONFLICT
  * ================= */

  $.fn.modal.noConflict = function () {
    $.fn.modal = old
    return this
  }


 /* MODAL DATA-API
  * ============== */

  $(document).on('click.modal.data-api', '[data-toggle="modal"]', function (e) {
    var $this = $(this)
      , href = $this.attr('href')
      , $target = $($this.attr('data-target') || (href && href.replace(/.*(?=#[^\s]+$)/, ''))) //strip for ie7
      , option = $target.data('modal') ? 'toggle' : $.extend({ remote:!/#/.test(href) && href }, $target.data(), $this.data())

    e.preventDefault()

    $target
      .modal(option)
      .one('hide', function () {
        $this.focus()
      })
  })

}(window.jQuery);

/* ============================================================
 * bootstrap-dropdown.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#dropdowns
 * ============================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============================================================ */


!function ($) {

  "use strict"; // jshint ;_;


 /* DROPDOWN CLASS DEFINITION
  * ========================= */

  var toggle = '[data-toggle=dropdown]'
    , Dropdown = function (element) {
        var $el = $(element).on('click.dropdown.data-api', this.toggle)
        $('html').on('click.dropdown.data-api', function () {
          $el.parent().removeClass('open')
        })
      }

  Dropdown.prototype = {

    constructor: Dropdown

  , toggle: function (e) {
      var $this = $(this)
        , $parent
        , isActive

      if ($this.is('.disabled, :disabled')) return

      $parent = getParent($this)

      isActive = $parent.hasClass('open')

      clearMenus()

      if (!isActive) {
        if ('ontouchstart' in document.documentElement) {
          // if mobile we we use a backdrop because click events don't delegate
          $('<div class="dropdown-backdrop"/>').insertBefore($(this)).on('click', clearMenus)
        }
        $parent.toggleClass('open')
      }

      $this.focus()

      return false
    }

  , keydown: function (e) {
      var $this
        , $items
        , $active
        , $parent
        , isActive
        , index

      if (!/(38|40|27)/.test(e.keyCode)) return

      $this = $(this)

      e.preventDefault()
      e.stopPropagation()

      if ($this.is('.disabled, :disabled')) return

      $parent = getParent($this)

      isActive = $parent.hasClass('open')

      if (!isActive || (isActive && e.keyCode == 27)) {
        if (e.which == 27) $parent.find(toggle).focus()
        return $this.click()
      }

      $items = $('[role=menu] li:not(.divider):visible a', $parent)

      if (!$items.length) return

      index = $items.index($items.filter(':focus'))

      if (e.keyCode == 38 && index > 0) index--                                        // up
      if (e.keyCode == 40 && index < $items.length - 1) index++                        // down
      if (!~index) index = 0

      $items
        .eq(index)
        .focus()
    }

  }

  function clearMenus() {
    $('.dropdown-backdrop').remove()
    $(toggle).each(function () {
      getParent($(this)).removeClass('open')
    })
  }

  function getParent($this) {
    var selector = $this.attr('data-target')
      , $parent

    if (!selector) {
      selector = $this.attr('href')
      selector = selector && /#/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
    }

    $parent = selector && $(selector)

    if (!$parent || !$parent.length) $parent = $this.parent()

    return $parent
  }


  /* DROPDOWN PLUGIN DEFINITION
   * ========================== */

  var old = $.fn.dropdown

  $.fn.dropdown = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('dropdown')
      if (!data) $this.data('dropdown', (data = new Dropdown(this)))
      if (typeof option == 'string') data[option].call($this)
    })
  }

  $.fn.dropdown.Constructor = Dropdown


 /* DROPDOWN NO CONFLICT
  * ==================== */

  $.fn.dropdown.noConflict = function () {
    $.fn.dropdown = old
    return this
  }


  /* APPLY TO STANDARD DROPDOWN ELEMENTS
   * =================================== */

  $(document)
    .on('click.dropdown.data-api', clearMenus)
    .on('click.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
    .on('click.dropdown.data-api'  , toggle, Dropdown.prototype.toggle)
    .on('keydown.dropdown.data-api', toggle + ', [role=menu]' , Dropdown.prototype.keydown)

}(window.jQuery);

/* =============================================================
 * bootstrap-scrollspy.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#scrollspy
 * =============================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============================================================== */


!function ($) {

  "use strict"; // jshint ;_;


 /* SCROLLSPY CLASS DEFINITION
  * ========================== */

  function ScrollSpy(element, options) {
    var process = $.proxy(this.process, this)
      , $element = $(element).is('body') ? $(window) : $(element)
      , href
    this.options = $.extend({}, $.fn.scrollspy.defaults, options)
    this.$scrollElement = $element.on('scroll.scroll-spy.data-api', process)
    this.selector = (this.options.target
      || ((href = $(element).attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '')) //strip for ie7
      || '') + ' .nav li > a'
    this.$body = $('body')
    this.refresh()
    this.process()
  }

  ScrollSpy.prototype = {

      constructor: ScrollSpy

    , refresh: function () {
        var self = this
          , $targets

        this.offsets = $([])
        this.targets = $([])

        $targets = this.$body
          .find(this.selector)
          .map(function () {
            var $el = $(this)
              , href = $el.data('target') || $el.attr('href')
              , $href = /^#\w/.test(href) && $(href)
            return ( $href
              && $href.length
              && [[ $href.position().top + (!$.isWindow(self.$scrollElement.get(0)) && self.$scrollElement.scrollTop()), href ]] ) || null
          })
          .sort(function (a, b) { return a[0] - b[0] })
          .each(function () {
            self.offsets.push(this[0])
            self.targets.push(this[1])
          })
      }

    , process: function () {
        var scrollTop = this.$scrollElement.scrollTop() + this.options.offset
          , scrollHeight = this.$scrollElement[0].scrollHeight || this.$body[0].scrollHeight
          , maxScroll = scrollHeight - this.$scrollElement.height()
          , offsets = this.offsets
          , targets = this.targets
          , activeTarget = this.activeTarget
          , i

        if (scrollTop >= maxScroll) {
          return activeTarget != (i = targets.last()[0])
            && this.activate ( i )
        }

        for (i = offsets.length; i--;) {
          activeTarget != targets[i]
            && scrollTop >= offsets[i]
            && (!offsets[i + 1] || scrollTop <= offsets[i + 1])
            && this.activate( targets[i] )
        }
      }

    , activate: function (target) {
        var active
          , selector

        this.activeTarget = target

        $(this.selector)
          .parent('.active')
          .removeClass('active')

        selector = this.selector
          + '[data-target="' + target + '"],'
          + this.selector + '[href="' + target + '"]'

        active = $(selector)
          .parent('li')
          .addClass('active')

        if (active.parent('.dropdown-menu').length)  {
          active = active.closest('li.dropdown').addClass('active')
        }

        active.trigger('activate')
      }

  }


 /* SCROLLSPY PLUGIN DEFINITION
  * =========================== */

  var old = $.fn.scrollspy

  $.fn.scrollspy = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('scrollspy')
        , options = typeof option == 'object' && option
      if (!data) $this.data('scrollspy', (data = new ScrollSpy(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  $.fn.scrollspy.Constructor = ScrollSpy

  $.fn.scrollspy.defaults = {
    offset: 10
  }


 /* SCROLLSPY NO CONFLICT
  * ===================== */

  $.fn.scrollspy.noConflict = function () {
    $.fn.scrollspy = old
    return this
  }


 /* SCROLLSPY DATA-API
  * ================== */

  $(window).on('load', function () {
    $('[data-spy="scroll"]').each(function () {
      var $spy = $(this)
      $spy.scrollspy($spy.data())
    })
  })

}(window.jQuery);
/* ========================================================
 * bootstrap-tab.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#tabs
 * ========================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ======================================================== */


!function ($) {

  "use strict"; // jshint ;_;


 /* TAB CLASS DEFINITION
  * ==================== */

  var Tab = function (element) {
    this.element = $(element)
  }

  Tab.prototype = {

    constructor: Tab

  , show: function () {
      var $this = this.element
        , $ul = $this.closest('ul:not(.dropdown-menu)')
        , selector = $this.attr('data-target')
        , previous
        , $target
        , e

      if (!selector) {
        selector = $this.attr('href')
        selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
      }

      if ( $this.parent('li').hasClass('active') ) return

      previous = $ul.find('.active:last a')[0]

      e = $.Event('show', {
        relatedTarget: previous
      })

      $this.trigger(e)

      if (e.isDefaultPrevented()) return

      $target = $(selector)

      this.activate($this.parent('li'), $ul)
      this.activate($target, $target.parent(), function () {
        $this.trigger({
          type: 'shown'
        , relatedTarget: previous
        })
      })
    }

  , activate: function ( element, container, callback) {
      var $active = container.find('> .active')
        , transition = callback
            && $.support.transition
            && $active.hasClass('fade')

      function next() {
        $active
          .removeClass('active')
          .find('> .dropdown-menu > .active')
          .removeClass('active')

        element.addClass('active')

        if (transition) {
          element[0].offsetWidth // reflow for transition
          element.addClass('in')
        } else {
          element.removeClass('fade')
        }

        if ( element.parent('.dropdown-menu') ) {
          element.closest('li.dropdown').addClass('active')
        }

        callback && callback()
      }

      transition ?
        $active.one($.support.transition.end, next) :
        next()

      $active.removeClass('in')
    }
  }


 /* TAB PLUGIN DEFINITION
  * ===================== */

  var old = $.fn.tab

  $.fn.tab = function ( option ) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('tab')
      if (!data) $this.data('tab', (data = new Tab(this)))
      if (typeof option == 'string') data[option]()
    })
  }

  $.fn.tab.Constructor = Tab


 /* TAB NO CONFLICT
  * =============== */

  $.fn.tab.noConflict = function () {
    $.fn.tab = old
    return this
  }


 /* TAB DATA-API
  * ============ */

  $(document).on('click.tab.data-api', '[data-toggle="tab"], [data-toggle="pill"]', function (e) {
    e.preventDefault()
    $(this).tab('show')
  })

}(window.jQuery);
/* ===========================================================
 * bootstrap-tooltip.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#tooltips
 * Inspired by the original jQuery.tipsy by Jason Frame
 * ===========================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ========================================================== */


!function ($) {

  "use strict"; // jshint ;_;


 /* TOOLTIP PUBLIC CLASS DEFINITION
  * =============================== */

  var Tooltip = function (element, options) {
    this.init('tooltip', element, options)
  }

  Tooltip.prototype = {

    constructor: Tooltip

  , init: function (type, element, options) {
      var eventIn
        , eventOut
        , triggers
        , trigger
        , i

      this.type = type
      this.$element = $(element)
      this.options = this.getOptions(options)
      this.enabled = true

      triggers = this.options.trigger.split(' ')

      for (i = triggers.length; i--;) {
        trigger = triggers[i]
        if (trigger == 'click') {
          this.$element.on('click.' + this.type, this.options.selector, $.proxy(this.toggle, this))
        } else if (trigger != 'manual') {
          eventIn = trigger == 'hover' ? 'mouseenter' : 'focus'
          eventOut = trigger == 'hover' ? 'mouseleave' : 'blur'
          this.$element.on(eventIn + '.' + this.type, this.options.selector, $.proxy(this.enter, this))
          this.$element.on(eventOut + '.' + this.type, this.options.selector, $.proxy(this.leave, this))
        }
      }

      this.options.selector ?
        (this._options = $.extend({}, this.options, { trigger: 'manual', selector: '' })) :
        this.fixTitle()
    }

  , getOptions: function (options) {
      options = $.extend({}, $.fn[this.type].defaults, this.$element.data(), options)

      if (options.delay && typeof options.delay == 'number') {
        options.delay = {
          show: options.delay
        , hide: options.delay
        }
      }

      return options
    }

  , enter: function (e) {
      var defaults = $.fn[this.type].defaults
        , options = {}
        , self

      this._options && $.each(this._options, function (key, value) {
        if (defaults[key] != value) options[key] = value
      }, this)

      self = $(e.currentTarget)[this.type](options).data(this.type)

      if (!self.options.delay || !self.options.delay.show) return self.show()

      clearTimeout(this.timeout)
      self.hoverState = 'in'
      this.timeout = setTimeout(function() {
        if (self.hoverState == 'in') self.show()
      }, self.options.delay.show)
    }

  , leave: function (e) {
      var self = $(e.currentTarget)[this.type](this._options).data(this.type)

      if (this.timeout) clearTimeout(this.timeout)
      if (!self.options.delay || !self.options.delay.hide) return self.hide()

      self.hoverState = 'out'
      this.timeout = setTimeout(function() {
        if (self.hoverState == 'out') self.hide()
      }, self.options.delay.hide)
    }

  , show: function () {
      var $tip
        , pos
        , actualWidth
        , actualHeight
        , placement
        , tp
        , e = $.Event('show')

      if (this.hasContent() && this.enabled) {
        this.$element.trigger(e)
        if (e.isDefaultPrevented()) return
        $tip = this.tip()
        this.setContent()

        if (this.options.animation) {
          $tip.addClass('fade')
        }

        placement = typeof this.options.placement == 'function' ?
          this.options.placement.call(this, $tip[0], this.$element[0]) :
          this.options.placement

        $tip
          .detach()
          .css({ top: 0, left: 0, display: 'block' })

        this.options.container ? $tip.appendTo(this.options.container) : $tip.insertAfter(this.$element)

        pos = this.getPosition()

        actualWidth = $tip[0].offsetWidth
        actualHeight = $tip[0].offsetHeight

        switch (placement) {
          case 'bottom':
            tp = {top: pos.top + pos.height, left: pos.left + pos.width / 2 - actualWidth / 2}
            break
          case 'top':
            tp = {top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2}
            break
          case 'left':
            tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth}
            break
          case 'right':
            tp = {top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width}
            break
        }

        this.applyPlacement(tp, placement)
        this.$element.trigger('shown')
      }
    }

  , applyPlacement: function(offset, placement){
      var $tip = this.tip()
        , width = $tip[0].offsetWidth
        , height = $tip[0].offsetHeight
        , actualWidth
        , actualHeight
        , delta
        , replace

      $tip
        .offset(offset)
        .addClass(placement)
        .addClass('in')

      actualWidth = $tip[0].offsetWidth
      actualHeight = $tip[0].offsetHeight

      if (placement == 'top' && actualHeight != height) {
        offset.top = offset.top + height - actualHeight
        replace = true
      }

      if (placement == 'bottom' || placement == 'top') {
        delta = 0

        if (offset.left < 0){
          delta = offset.left * -2
          offset.left = 0
          $tip.offset(offset)
          actualWidth = $tip[0].offsetWidth
          actualHeight = $tip[0].offsetHeight
        }

        this.replaceArrow(delta - width + actualWidth, actualWidth, 'left')
      } else {
        this.replaceArrow(actualHeight - height, actualHeight, 'top')
      }

      if (replace) $tip.offset(offset)
    }

  , replaceArrow: function(delta, dimension, position){
      this
        .arrow()
        .css(position, delta ? (50 * (1 - delta / dimension) + "%") : '')
    }

  , setContent: function () {
      var $tip = this.tip()
        , title = this.getTitle()

      $tip.find('.tooltip-inner')[this.options.html ? 'html' : 'text'](title)
      $tip.removeClass('fade in top bottom left right')
    }

  , hide: function () {
      var that = this
        , $tip = this.tip()
        , e = $.Event('hide')

      this.$element.trigger(e)
      if (e.isDefaultPrevented()) return

      $tip.removeClass('in')

      function removeWithAnimation() {
        var timeout = setTimeout(function () {
          $tip.off($.support.transition.end).detach()
        }, 500)

        $tip.one($.support.transition.end, function () {
          clearTimeout(timeout)
          $tip.detach()
        })
      }

      $.support.transition && this.$tip.hasClass('fade') ?
        removeWithAnimation() :
        $tip.detach()

      this.$element.trigger('hidden')

      return this
    }

  , fixTitle: function () {
      var $e = this.$element
      if ($e.attr('title') || typeof($e.attr('data-original-title')) != 'string') {
        $e.attr('data-original-title', $e.attr('title') || '').attr('title', '')
      }
    }

  , hasContent: function () {
      return this.getTitle()
    }

  , getPosition: function () {
      var el = this.$element[0]
      return $.extend({}, (typeof el.getBoundingClientRect == 'function') ? el.getBoundingClientRect() : {
        width: el.offsetWidth
      , height: el.offsetHeight
      }, this.$element.offset())
    }

  , getTitle: function () {
      var title
        , $e = this.$element
        , o = this.options

      title = $e.attr('data-original-title')
        || (typeof o.title == 'function' ? o.title.call($e[0]) :  o.title)

      return title
    }

  , tip: function () {
      return this.$tip = this.$tip || $(this.options.template)
    }

  , arrow: function(){
      return this.$arrow = this.$arrow || this.tip().find(".tooltip-arrow")
    }

  , validate: function () {
      if (!this.$element[0].parentNode) {
        this.hide()
        this.$element = null
        this.options = null
      }
    }

  , enable: function () {
      this.enabled = true
    }

  , disable: function () {
      this.enabled = false
    }

  , toggleEnabled: function () {
      this.enabled = !this.enabled
    }

  , toggle: function (e) {
      var self = e ? $(e.currentTarget)[this.type](this._options).data(this.type) : this
      self.tip().hasClass('in') ? self.hide() : self.show()
    }

  , destroy: function () {
      this.hide().$element.off('.' + this.type).removeData(this.type)
    }

  }


 /* TOOLTIP PLUGIN DEFINITION
  * ========================= */

  var old = $.fn.tooltip

  $.fn.tooltip = function ( option ) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('tooltip')
        , options = typeof option == 'object' && option
      if (!data) $this.data('tooltip', (data = new Tooltip(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  $.fn.tooltip.Constructor = Tooltip

  $.fn.tooltip.defaults = {
    animation: true
  , placement: 'top'
  , selector: false
  , template: '<div class="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>'
  , trigger: 'hover focus'
  , title: ''
  , delay: 0
  , html: false
  , container: false
  }


 /* TOOLTIP NO CONFLICT
  * =================== */

  $.fn.tooltip.noConflict = function () {
    $.fn.tooltip = old
    return this
  }

}(window.jQuery);

/* ===========================================================
 * bootstrap-popover.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#popovers
 * ===========================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =========================================================== */


!function ($) {

  "use strict"; // jshint ;_;


 /* POPOVER PUBLIC CLASS DEFINITION
  * =============================== */

  var Popover = function (element, options) {
    this.init('popover', element, options)
  }


  /* NOTE: POPOVER EXTENDS BOOTSTRAP-TOOLTIP.js
     ========================================== */

  Popover.prototype = $.extend({}, $.fn.tooltip.Constructor.prototype, {

    constructor: Popover

  , setContent: function () {
      var $tip = this.tip()
        , title = this.getTitle()
        , content = this.getContent()

      $tip.find('.popover-title')[this.options.html ? 'html' : 'text'](title)
      $tip.find('.popover-content')[this.options.html ? 'html' : 'text'](content)

      $tip.removeClass('fade top bottom left right in')
    }

  , hasContent: function () {
      return this.getTitle() || this.getContent()
    }

  , getContent: function () {
      var content
        , $e = this.$element
        , o = this.options

      content = (typeof o.content == 'function' ? o.content.call($e[0]) :  o.content)
        || $e.attr('data-content')

      return content
    }

  , tip: function () {
      if (!this.$tip) {
        this.$tip = $(this.options.template)
      }
      return this.$tip
    }

  , destroy: function () {
      this.hide().$element.off('.' + this.type).removeData(this.type)
    }

  })


 /* POPOVER PLUGIN DEFINITION
  * ======================= */

  var old = $.fn.popover

  $.fn.popover = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('popover')
        , options = typeof option == 'object' && option
      if (!data) $this.data('popover', (data = new Popover(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  $.fn.popover.Constructor = Popover

  $.fn.popover.defaults = $.extend({} , $.fn.tooltip.defaults, {
    placement: 'right'
  , trigger: 'click'
  , content: ''
  , template: '<div class="popover"><div class="arrow"></div><h3 class="popover-title"></h3><div class="popover-content"></div></div>'
  })


 /* POPOVER NO CONFLICT
  * =================== */

  $.fn.popover.noConflict = function () {
    $.fn.popover = old
    return this
  }

}(window.jQuery);

/* ==========================================================
 * bootstrap-affix.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#affix
 * ==========================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ========================================================== */


!function ($) {

  "use strict"; // jshint ;_;


 /* AFFIX CLASS DEFINITION
  * ====================== */

  var Affix = function (element, options) {
    this.options = $.extend({}, $.fn.affix.defaults, options)
    this.$window = $(window)
      .on('scroll.affix.data-api', $.proxy(this.checkPosition, this))
      .on('click.affix.data-api',  $.proxy(function () { setTimeout($.proxy(this.checkPosition, this), 1) }, this))
    this.$element = $(element)
    this.checkPosition()
  }

  Affix.prototype.checkPosition = function () {
    if (!this.$element.is(':visible')) return

    var scrollHeight = $(document).height()
      , scrollTop = this.$window.scrollTop()
      , position = this.$element.offset()
      , offset = this.options.offset
      , offsetBottom = offset.bottom
      , offsetTop = offset.top
      , reset = 'affix affix-top affix-bottom'
      , affix

    if (typeof offset != 'object') offsetBottom = offsetTop = offset
    if (typeof offsetTop == 'function') offsetTop = offset.top()
    if (typeof offsetBottom == 'function') offsetBottom = offset.bottom()

    affix = this.unpin != null && (scrollTop + this.unpin <= position.top) ?
      false    : offsetBottom != null && (position.top + this.$element.height() >= scrollHeight - offsetBottom) ?
      'bottom' : offsetTop != null && scrollTop <= offsetTop ?
      'top'    : false

    if (this.affixed === affix) return

    this.affixed = affix
    this.unpin = affix == 'bottom' ? position.top - scrollTop : null

    this.$element.removeClass(reset).addClass('affix' + (affix ? '-' + affix : ''))
  }


 /* AFFIX PLUGIN DEFINITION
  * ======================= */

  var old = $.fn.affix

  $.fn.affix = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('affix')
        , options = typeof option == 'object' && option
      if (!data) $this.data('affix', (data = new Affix(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  $.fn.affix.Constructor = Affix

  $.fn.affix.defaults = {
    offset: 0
  }


 /* AFFIX NO CONFLICT
  * ================= */

  $.fn.affix.noConflict = function () {
    $.fn.affix = old
    return this
  }


 /* AFFIX DATA-API
  * ============== */

  $(window).on('load', function () {
    $('[data-spy="affix"]').each(function () {
      var $spy = $(this)
        , data = $spy.data()

      data.offset = data.offset || {}

      data.offsetBottom && (data.offset.bottom = data.offsetBottom)
      data.offsetTop && (data.offset.top = data.offsetTop)

      $spy.affix(data)
    })
  })


}(window.jQuery);
/* ==========================================================
 * bootstrap-alert.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#alerts
 * ==========================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ========================================================== */


!function ($) {

  "use strict"; // jshint ;_;


 /* ALERT CLASS DEFINITION
  * ====================== */

  var dismiss = '[data-dismiss="alert"]'
    , Alert = function (el) {
        $(el).on('click', dismiss, this.close)
      }

  Alert.prototype.close = function (e) {
    var $this = $(this)
      , selector = $this.attr('data-target')
      , $parent

    if (!selector) {
      selector = $this.attr('href')
      selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
    }

    $parent = $(selector)

    e && e.preventDefault()

    $parent.length || ($parent = $this.hasClass('alert') ? $this : $this.parent())

    $parent.trigger(e = $.Event('close'))

    if (e.isDefaultPrevented()) return

    $parent.removeClass('in')

    function removeElement() {
      $parent
        .trigger('closed')
        .remove()
    }

    $.support.transition && $parent.hasClass('fade') ?
      $parent.on($.support.transition.end, removeElement) :
      removeElement()
  }


 /* ALERT PLUGIN DEFINITION
  * ======================= */

  var old = $.fn.alert

  $.fn.alert = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('alert')
      if (!data) $this.data('alert', (data = new Alert(this)))
      if (typeof option == 'string') data[option].call($this)
    })
  }

  $.fn.alert.Constructor = Alert


 /* ALERT NO CONFLICT
  * ================= */

  $.fn.alert.noConflict = function () {
    $.fn.alert = old
    return this
  }


 /* ALERT DATA-API
  * ============== */

  $(document).on('click.alert.data-api', dismiss, Alert.prototype.close)

}(window.jQuery);
/* ============================================================
 * bootstrap-button.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#buttons
 * ============================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============================================================ */


!function ($) {

  "use strict"; // jshint ;_;


 /* BUTTON PUBLIC CLASS DEFINITION
  * ============================== */

  var Button = function (element, options) {
    this.$element = $(element)
    this.options = $.extend({}, $.fn.button.defaults, options)
  }

  Button.prototype.setState = function (state) {
    var d = 'disabled'
      , $el = this.$element
      , data = $el.data()
      , val = $el.is('input') ? 'val' : 'html'

    state = state + 'Text'
    data.resetText || $el.data('resetText', $el[val]())

    $el[val](data[state] || this.options[state])

    // push to event loop to allow forms to submit
    setTimeout(function () {
      state == 'loadingText' ?
        $el.addClass(d).attr(d, d) :
        $el.removeClass(d).removeAttr(d)
    }, 0)
  }

  Button.prototype.toggle = function () {
    var $parent = this.$element.closest('[data-toggle="buttons-radio"]')

    $parent && $parent
      .find('.active')
      .removeClass('active')

    this.$element.toggleClass('active')
  }


 /* BUTTON PLUGIN DEFINITION
  * ======================== */

  var old = $.fn.button

  $.fn.button = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('button')
        , options = typeof option == 'object' && option
      if (!data) $this.data('button', (data = new Button(this, options)))
      if (option == 'toggle') data.toggle()
      else if (option) data.setState(option)
    })
  }

  $.fn.button.defaults = {
    loadingText: 'loading...'
  }

  $.fn.button.Constructor = Button


 /* BUTTON NO CONFLICT
  * ================== */

  $.fn.button.noConflict = function () {
    $.fn.button = old
    return this
  }


 /* BUTTON DATA-API
  * =============== */

  $(document).on('click.button.data-api', '[data-toggle^=button]', function (e) {
    var $btn = $(e.target)
    if (!$btn.hasClass('btn')) $btn = $btn.closest('.btn')
    $btn.button('toggle')
  })

}(window.jQuery);
/* =============================================================
 * bootstrap-collapse.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#collapse
 * =============================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============================================================ */


!function ($) {

  "use strict"; // jshint ;_;


 /* COLLAPSE PUBLIC CLASS DEFINITION
  * ================================ */

  var Collapse = function (element, options) {
    this.$element = $(element)
    this.options = $.extend({}, $.fn.collapse.defaults, options)

    if (this.options.parent) {
      this.$parent = $(this.options.parent)
    }

    this.options.toggle && this.toggle()
  }

  Collapse.prototype = {

    constructor: Collapse

  , dimension: function () {
      var hasWidth = this.$element.hasClass('width')
      return hasWidth ? 'width' : 'height'
    }

  , show: function () {
      var dimension
        , scroll
        , actives
        , hasData

      if (this.transitioning || this.$element.hasClass('in')) return

      dimension = this.dimension()
      scroll = $.camelCase(['scroll', dimension].join('-'))
      actives = this.$parent && this.$parent.find('> .accordion-group > .in')

      if (actives && actives.length) {
        hasData = actives.data('collapse')
        if (hasData && hasData.transitioning) return
        actives.collapse('hide')
        hasData || actives.data('collapse', null)
      }

      this.$element[dimension](0)
      this.transition('addClass', $.Event('show'), 'shown')
      $.support.transition && this.$element[dimension](this.$element[0][scroll])
    }

  , hide: function () {
      var dimension
      if (this.transitioning || !this.$element.hasClass('in')) return
      dimension = this.dimension()
      this.reset(this.$element[dimension]())
      this.transition('removeClass', $.Event('hide'), 'hidden')
      this.$element[dimension](0)
    }

  , reset: function (size) {
      var dimension = this.dimension()

      this.$element
        .removeClass('collapse')
        [dimension](size || 'auto')
        [0].offsetWidth

      this.$element[size !== null ? 'addClass' : 'removeClass']('collapse')

      return this
    }

  , transition: function (method, startEvent, completeEvent) {
      var that = this
        , complete = function () {
            if (startEvent.type == 'show') that.reset()
            that.transitioning = 0
            that.$element.trigger(completeEvent)
          }

      this.$element.trigger(startEvent)

      if (startEvent.isDefaultPrevented()) return

      this.transitioning = 1

      this.$element[method]('in')

      $.support.transition && this.$element.hasClass('collapse') ?
        this.$element.one($.support.transition.end, complete) :
        complete()
    }

  , toggle: function () {
      this[this.$element.hasClass('in') ? 'hide' : 'show']()
    }

  }


 /* COLLAPSE PLUGIN DEFINITION
  * ========================== */

  var old = $.fn.collapse

  $.fn.collapse = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('collapse')
        , options = $.extend({}, $.fn.collapse.defaults, $this.data(), typeof option == 'object' && option)
      if (!data) $this.data('collapse', (data = new Collapse(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  $.fn.collapse.defaults = {
    toggle: true
  }

  $.fn.collapse.Constructor = Collapse


 /* COLLAPSE NO CONFLICT
  * ==================== */

  $.fn.collapse.noConflict = function () {
    $.fn.collapse = old
    return this
  }


 /* COLLAPSE DATA-API
  * ================= */

  $(document).on('click.collapse.data-api', '[data-toggle=collapse]', function (e) {
    var $this = $(this), href
      , target = $this.attr('data-target')
        || e.preventDefault()
        || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') //strip for ie7
      , option = $(target).data('collapse') ? 'toggle' : $this.data()
    $this[$(target).hasClass('in') ? 'addClass' : 'removeClass']('collapsed')
    $(target).collapse(option)
  })

}(window.jQuery);
/* ==========================================================
 * bootstrap-carousel.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#carousel
 * ==========================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ========================================================== */


!function ($) {

  "use strict"; // jshint ;_;


 /* CAROUSEL CLASS DEFINITION
  * ========================= */

  var Carousel = function (element, options) {
    this.$element = $(element)
    this.$indicators = this.$element.find('.carousel-indicators')
    this.options = options
    this.options.pause == 'hover' && this.$element
      .on('mouseenter', $.proxy(this.pause, this))
      .on('mouseleave', $.proxy(this.cycle, this))
  }

  Carousel.prototype = {

    cycle: function (e) {
      if (!e) this.paused = false
      if (this.interval) clearInterval(this.interval);
      this.options.interval
        && !this.paused
        && (this.interval = setInterval($.proxy(this.next, this), this.options.interval))
      return this
    }

  , getActiveIndex: function () {
      this.$active = this.$element.find('.item.active')
      this.$items = this.$active.parent().children()
      return this.$items.index(this.$active)
    }

  , to: function (pos) {
      var activeIndex = this.getActiveIndex()
        , that = this

      if (pos > (this.$items.length - 1) || pos < 0) return

      if (this.sliding) {
        return this.$element.one('slid', function () {
          that.to(pos)
        })
      }

      if (activeIndex == pos) {
        return this.pause().cycle()
      }

      return this.slide(pos > activeIndex ? 'next' : 'prev', $(this.$items[pos]))
    }

  , pause: function (e) {
      if (!e) this.paused = true
      if (this.$element.find('.next, .prev').length && $.support.transition.end) {
        this.$element.trigger($.support.transition.end)
        this.cycle(true)
      }
      clearInterval(this.interval)
      this.interval = null
      return this
    }

  , next: function () {
      if (this.sliding) return
      return this.slide('next')
    }

  , prev: function () {
      if (this.sliding) return
      return this.slide('prev')
    }

  , slide: function (type, next) {
      var $active = this.$element.find('.item.active')
        , $next = next || $active[type]()
        , isCycling = this.interval
        , direction = type == 'next' ? 'left' : 'right'
        , fallback  = type == 'next' ? 'first' : 'last'
        , that = this
        , e

      this.sliding = true

      isCycling && this.pause()

      $next = $next.length ? $next : this.$element.find('.item')[fallback]()

      e = $.Event('slide', {
        relatedTarget: $next[0]
      , direction: direction
      })

      if ($next.hasClass('active')) return

      if (this.$indicators.length) {
        this.$indicators.find('.active').removeClass('active')
        this.$element.one('slid', function () {
          var $nextIndicator = $(that.$indicators.children()[that.getActiveIndex()])
          $nextIndicator && $nextIndicator.addClass('active')
        })
      }

      if ($.support.transition && this.$element.hasClass('slide')) {
        this.$element.trigger(e)
        if (e.isDefaultPrevented()) return
        $next.addClass(type)
        $next[0].offsetWidth // force reflow
        $active.addClass(direction)
        $next.addClass(direction)
        this.$element.one($.support.transition.end, function () {
          $next.removeClass([type, direction].join(' ')).addClass('active')
          $active.removeClass(['active', direction].join(' '))
          that.sliding = false
          setTimeout(function () { that.$element.trigger('slid') }, 0)
        })
      } else {
        this.$element.trigger(e)
        if (e.isDefaultPrevented()) return
        $active.removeClass('active')
        $next.addClass('active')
        this.sliding = false
        this.$element.trigger('slid')
      }

      isCycling && this.cycle()

      return this
    }

  }


 /* CAROUSEL PLUGIN DEFINITION
  * ========================== */

  var old = $.fn.carousel

  $.fn.carousel = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('carousel')
        , options = $.extend({}, $.fn.carousel.defaults, typeof option == 'object' && option)
        , action = typeof option == 'string' ? option : options.slide
      if (!data) $this.data('carousel', (data = new Carousel(this, options)))
      if (typeof option == 'number') data.to(option)
      else if (action) data[action]()
      else if (options.interval) data.pause().cycle()
    })
  }

  $.fn.carousel.defaults = {
    interval: 5000
  , pause: 'hover'
  }

  $.fn.carousel.Constructor = Carousel


 /* CAROUSEL NO CONFLICT
  * ==================== */

  $.fn.carousel.noConflict = function () {
    $.fn.carousel = old
    return this
  }

 /* CAROUSEL DATA-API
  * ================= */

  $(document).on('click.carousel.data-api', '[data-slide], [data-slide-to]', function (e) {
    var $this = $(this), href
      , $target = $($this.attr('data-target') || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '')) //strip for ie7
      , options = $.extend({}, $target.data(), $this.data())
      , slideIndex

    $target.carousel(options)

    if (slideIndex = $this.attr('data-slide-to')) {
      $target.data('carousel').pause().to(slideIndex).cycle()
    }

    e.preventDefault()
  })

}(window.jQuery);
/* =============================================================
 * bootstrap-typeahead.js v2.3.2
 * http://getbootstrap.com/2.3.2/javascript.html#typeahead
 * =============================================================
 * Copyright 2013 Twitter, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============================================================ */


!function($){

  "use strict"; // jshint ;_;


 /* TYPEAHEAD PUBLIC CLASS DEFINITION
  * ================================= */

  var Typeahead = function (element, options) {
    this.$element = $(element)
    this.options = $.extend({}, $.fn.typeahead.defaults, options)
    this.matcher = this.options.matcher || this.matcher
    this.sorter = this.options.sorter || this.sorter
    this.highlighter = this.options.highlighter || this.highlighter
    this.updater = this.options.updater || this.updater
    this.source = this.options.source
    this.$menu = $(this.options.menu)
    this.shown = false
    this.listen()
  }

  Typeahead.prototype = {

    constructor: Typeahead

  , select: function () {
      var val = this.$menu.find('.active').attr('data-value')
      this.$element
        .val(this.updater(val))
        .change()
      return this.hide()
    }

  , updater: function (item) {
      return item
    }

  , show: function () {
      var pos = $.extend({}, this.$element.position(), {
        height: this.$element[0].offsetHeight
      })

      this.$menu
        .insertAfter(this.$element)
        .css({
          top: pos.top + pos.height
        , left: pos.left
        })
        .show()

      this.shown = true
      return this
    }

  , hide: function () {
      this.$menu.hide()
      this.shown = false
      return this
    }

  , lookup: function (event) {
      var items

      this.query = this.$element.val()

      if (!this.query || this.query.length < this.options.minLength) {
        return this.shown ? this.hide() : this
      }

      items = $.isFunction(this.source) ? this.source(this.query, $.proxy(this.process, this)) : this.source

      return items ? this.process(items) : this
    }

  , process: function (items) {
      var that = this

      items = $.grep(items, function (item) {
        return that.matcher(item)
      })

      items = this.sorter(items)

      if (!items.length) {
        return this.shown ? this.hide() : this
      }

      return this.render(items.slice(0, this.options.items)).show()
    }

  , matcher: function (item) {
      return ~item.toLowerCase().indexOf(this.query.toLowerCase())
    }

  , sorter: function (items) {
      var beginswith = []
        , caseSensitive = []
        , caseInsensitive = []
        , item

      while (item = items.shift()) {
        if (!item.toLowerCase().indexOf(this.query.toLowerCase())) beginswith.push(item)
        else if (~item.indexOf(this.query)) caseSensitive.push(item)
        else caseInsensitive.push(item)
      }

      return beginswith.concat(caseSensitive, caseInsensitive)
    }

  , highlighter: function (item) {
      var query = this.query.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, '\\$&')
      return item.replace(new RegExp('(' + query + ')', 'ig'), function ($1, match) {
        return '<strong>' + match + '</strong>'
      })
    }

  , render: function (items) {
      var that = this

      items = $(items).map(function (i, item) {
        i = $(that.options.item).attr('data-value', item)
        i.find('a').html(that.highlighter(item))
        return i[0]
      })

      items.first().addClass('active')
      this.$menu.html(items)
      return this
    }

  , next: function (event) {
      var active = this.$menu.find('.active').removeClass('active')
        , next = active.next()

      if (!next.length) {
        next = $(this.$menu.find('li')[0])
      }

      next.addClass('active')
    }

  , prev: function (event) {
      var active = this.$menu.find('.active').removeClass('active')
        , prev = active.prev()

      if (!prev.length) {
        prev = this.$menu.find('li').last()
      }

      prev.addClass('active')
    }

  , listen: function () {
      this.$element
        .on('focus',    $.proxy(this.focus, this))
        .on('blur',     $.proxy(this.blur, this))
        .on('keypress', $.proxy(this.keypress, this))
        .on('keyup',    $.proxy(this.keyup, this))

      if (this.eventSupported('keydown')) {
        this.$element.on('keydown', $.proxy(this.keydown, this))
      }

      this.$menu
        .on('click', $.proxy(this.click, this))
        .on('mouseenter', 'li', $.proxy(this.mouseenter, this))
        .on('mouseleave', 'li', $.proxy(this.mouseleave, this))
    }

  , eventSupported: function(eventName) {
      var isSupported = eventName in this.$element
      if (!isSupported) {
        this.$element.setAttribute(eventName, 'return;')
        isSupported = typeof this.$element[eventName] === 'function'
      }
      return isSupported
    }

  , move: function (e) {
      if (!this.shown) return

      switch(e.keyCode) {
        case 9: // tab
        case 13: // enter
        case 27: // escape
          e.preventDefault()
          break

        case 38: // up arrow
          e.preventDefault()
          this.prev()
          break

        case 40: // down arrow
          e.preventDefault()
          this.next()
          break
      }

      e.stopPropagation()
    }

  , keydown: function (e) {
      this.suppressKeyPressRepeat = ~$.inArray(e.keyCode, [40,38,9,13,27])
      this.move(e)
    }

  , keypress: function (e) {
      if (this.suppressKeyPressRepeat) return
      this.move(e)
    }

  , keyup: function (e) {
      switch(e.keyCode) {
        case 40: // down arrow
        case 38: // up arrow
        case 16: // shift
        case 17: // ctrl
        case 18: // alt
          break

        case 9: // tab
        case 13: // enter
          if (!this.shown) return
          this.select()
          break

        case 27: // escape
          if (!this.shown) return
          this.hide()
          break

        default:
          this.lookup()
      }

      e.stopPropagation()
      e.preventDefault()
  }

  , focus: function (e) {
      this.focused = true
    }

  , blur: function (e) {
      this.focused = false
      if (!this.mousedover && this.shown) this.hide()
    }

  , click: function (e) {
      e.stopPropagation()
      e.preventDefault()
      this.select()
      this.$element.focus()
    }

  , mouseenter: function (e) {
      this.mousedover = true
      this.$menu.find('.active').removeClass('active')
      $(e.currentTarget).addClass('active')
    }

  , mouseleave: function (e) {
      this.mousedover = false
      if (!this.focused && this.shown) this.hide()
    }

  }


  /* TYPEAHEAD PLUGIN DEFINITION
   * =========================== */

  var old = $.fn.typeahead

  $.fn.typeahead = function (option) {
    return this.each(function () {
      var $this = $(this)
        , data = $this.data('typeahead')
        , options = typeof option == 'object' && option
      if (!data) $this.data('typeahead', (data = new Typeahead(this, options)))
      if (typeof option == 'string') data[option]()
    })
  }

  $.fn.typeahead.defaults = {
    source: []
  , items: 8
  , menu: '<ul class="typeahead dropdown-menu"></ul>'
  , item: '<li><a href="#"></a></li>'
  , minLength: 1
  }

  $.fn.typeahead.Constructor = Typeahead


 /* TYPEAHEAD NO CONFLICT
  * =================== */

  $.fn.typeahead.noConflict = function () {
    $.fn.typeahead = old
    return this
  }


 /* TYPEAHEAD DATA-API
  * ================== */

  $(document).on('focus.typeahead.data-api', '[data-provide="typeahead"]', function (e) {
    var $this = $(this)
    if ($this.data('typeahead')) return
    $this.typeahead($this.data())
  })

}(window.jQuery);

/**
 * Copyright 2012 Tsvetan Tsvetkov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Author: Tsvetan Tsvetkov (tsekach@gmail.com)
 */
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/**
 * @preserve FastClick: polyfill to remove click delays on browsers with touch UIs.
 *
 * @version 0.6.11
 * @codingstandard ftlabs-jsv2
 * @copyright The Financial Times Limited [All Rights Reserved]
 * @license MIT License (see LICENSE.txt)
 */

/*jslint browser:true, node:true*/
/*global define, Event, Node*/


/**
 * Instantiate fast-clicking listeners on the specificed layer.
 *
 * @constructor
 * @param {Element} layer The layer to listen on
 */
function FastClick(layer) {
  'use strict';
  var oldOnClick, self = this;


  /**
   * Whether a click is currently being tracked.
   *
   * @type boolean
   */
  this.trackingClick = false;


  /**
   * Timestamp for when when click tracking started.
   *
   * @type number
   */
  this.trackingClickStart = 0;


  /**
   * The element being tracked for a click.
   *
   * @type EventTarget
   */
  this.targetElement = null;


  /**
   * X-coordinate of touch start event.
   *
   * @type number
   */
  this.touchStartX = 0;


  /**
   * Y-coordinate of touch start event.
   *
   * @type number
   */
  this.touchStartY = 0;


  /**
   * ID of the last touch, retrieved from Touch.identifier.
   *
   * @type number
   */
  this.lastTouchIdentifier = 0;


  /**
   * Touchmove boundary, beyond which a click will be cancelled.
   *
   * @type number
   */
  this.touchBoundary = 10;


  /**
   * The FastClick layer.
   *
   * @type Element
   */
  this.layer = layer;

  if (!layer || !layer.nodeType) {
    throw new TypeError('Layer must be a document node');
  }

  /** @type function() */
  this.onClick = function() { return FastClick.prototype.onClick.apply(self, arguments); };

  /** @type function() */
  this.onMouse = function() { return FastClick.prototype.onMouse.apply(self, arguments); };

  /** @type function() */
  this.onTouchStart = function() { return FastClick.prototype.onTouchStart.apply(self, arguments); };

  /** @type function() */
  this.onTouchMove = function() { return FastClick.prototype.onTouchMove.apply(self, arguments); };

  /** @type function() */
  this.onTouchEnd = function() { return FastClick.prototype.onTouchEnd.apply(self, arguments); };

  /** @type function() */
  this.onTouchCancel = function() { return FastClick.prototype.onTouchCancel.apply(self, arguments); };

  if (FastClick.notNeeded(layer)) {
    return;
  }

  // Set up event handlers as required
  if (this.deviceIsAndroid) {
    layer.addEventListener('mouseover', this.onMouse, true);
    layer.addEventListener('mousedown', this.onMouse, true);
    layer.addEventListener('mouseup', this.onMouse, true);
  }

  layer.addEventListener('click', this.onClick, true);
  layer.addEventListener('touchstart', this.onTouchStart, false);
  layer.addEventListener('touchmove', this.onTouchMove, false);
  layer.addEventListener('touchend', this.onTouchEnd, false);
  layer.addEventListener('touchcancel', this.onTouchCancel, false);

  // Hack is required for browsers that don't support Event#stopImmediatePropagation (e.g. Android 2)
  // which is how FastClick normally stops click events bubbling to callbacks registered on the FastClick
  // layer when they are cancelled.
  if (!Event.prototype.stopImmediatePropagation) {
    layer.removeEventListener = function(type, callback, capture) {
      var rmv = Node.prototype.removeEventListener;
      if (type === 'click') {
        rmv.call(layer, type, callback.hijacked || callback, capture);
      } else {
        rmv.call(layer, type, callback, capture);
      }
    };

    layer.addEventListener = function(type, callback, capture) {
      var adv = Node.prototype.addEventListener;
      if (type === 'click') {
        adv.call(layer, type, callback.hijacked || (callback.hijacked = function(event) {
          if (!event.propagationStopped) {
            callback(event);
          }
        }), capture);
      } else {
        adv.call(layer, type, callback, capture);
      }
    };
  }

  // If a handler is already declared in the element's onclick attribute, it will be fired before
  // FastClick's onClick handler. Fix this by pulling out the user-defined handler function and
  // adding it as listener.
  if (typeof layer.onclick === 'function') {

    // Android browser on at least 3.2 requires a new reference to the function in layer.onclick
    // - the old one won't work if passed to addEventListener directly.
    oldOnClick = layer.onclick;
    layer.addEventListener('click', function(event) {
      oldOnClick(event);
    }, false);
    layer.onclick = null;
  }
}


/**
 * Android requires exceptions.
 *
 * @type boolean
 */
FastClick.prototype.deviceIsAndroid = navigator.userAgent.indexOf('Android') > 0;


/**
 * iOS requires exceptions.
 *
 * @type boolean
 */
FastClick.prototype.deviceIsIOS = /iP(ad|hone|od)/.test(navigator.userAgent);


/**
 * iOS 4 requires an exception for select elements.
 *
 * @type boolean
 */
FastClick.prototype.deviceIsIOS4 = FastClick.prototype.deviceIsIOS && (/OS 4_\d(_\d)?/).test(navigator.userAgent);


/**
 * iOS 6.0(+?) requires the target element to be manually derived
 *
 * @type boolean
 */
FastClick.prototype.deviceIsIOSWithBadTarget = FastClick.prototype.deviceIsIOS && (/OS ([6-9]|\d{2})_\d/).test(navigator.userAgent);


/**
 * Determine whether a given element requires a native click.
 *
 * @param {EventTarget|Element} target Target DOM element
 * @returns {boolean} Returns true if the element needs a native click
 */
FastClick.prototype.needsClick = function(target) {
  'use strict';
  switch (target.nodeName.toLowerCase()) {

  // Don't send a synthetic click to disabled inputs (issue #62)
  case 'button':
  case 'select':
  case 'textarea':
    if (target.disabled) {
      return true;
    }

    break;
  case 'input':

    // File inputs need real clicks on iOS 6 due to a browser bug (issue #68)
    if ((this.deviceIsIOS && target.type === 'file') || target.disabled) {
      return true;
    }

    break;
  case 'label':
  case 'video':
    return true;
  }

  return (/\bneedsclick\b/).test(target.className);
};


/**
 * Determine whether a given element requires a call to focus to simulate click into element.
 *
 * @param {EventTarget|Element} target Target DOM element
 * @returns {boolean} Returns true if the element requires a call to focus to simulate native click.
 */
FastClick.prototype.needsFocus = function(target) {
  'use strict';
  switch (target.nodeName.toLowerCase()) {
  case 'textarea':
    return true;
  case 'select':
    return !this.deviceIsAndroid;
  case 'input':
    switch (target.type) {
    case 'button':
    case 'checkbox':
    case 'file':
    case 'image':
    case 'radio':
    case 'submit':
      return false;
    }

    // No point in attempting to focus disabled inputs
    return !target.disabled && !target.readOnly;
  default:
    return (/\bneedsfocus\b/).test(target.className);
  }
};


/**
 * Send a click event to the specified element.
 *
 * @param {EventTarget|Element} targetElement
 * @param {Event} event
 */
FastClick.prototype.sendClick = function(targetElement, event) {
  'use strict';
  var clickEvent, touch;

  // On some Android devices activeElement needs to be blurred otherwise the synthetic click will have no effect (#24)
  if (document.activeElement && document.activeElement !== targetElement) {
    document.activeElement.blur();
  }

  touch = event.changedTouches[0];

  // Synthesise a click event, with an extra attribute so it can be tracked
  clickEvent = document.createEvent('MouseEvents');
  clickEvent.initMouseEvent(this.determineEventType(targetElement), true, true, window, 1, touch.screenX, touch.screenY, touch.clientX, touch.clientY, false, false, false, false, 0, null);
  clickEvent.forwardedTouchEvent = true;
  targetElement.dispatchEvent(clickEvent);
};

FastClick.prototype.determineEventType = function(targetElement) {
  'use strict';

  //Issue #159: Android Chrome Select Box does not open with a synthetic click event
  if (this.deviceIsAndroid && targetElement.tagName.toLowerCase() === 'select') {
    return 'mousedown';
  }

  return 'click';
};


/**
 * @param {EventTarget|Element} targetElement
 */
FastClick.prototype.focus = function(targetElement) {
  'use strict';
  var length;

  // Issue #160: on iOS 7, some input elements (e.g. date datetime) throw a vague TypeError on setSelectionRange. These elements don't have an integer value for the selectionStart and selectionEnd properties, but unfortunately that can't be used for detection because accessing the properties also throws a TypeError. Just check the type instead. Filed as Apple bug #15122724.
  if (this.deviceIsIOS && targetElement.setSelectionRange && targetElement.type.indexOf('date') !== 0 && targetElement.type !== 'time') {
    length = targetElement.value.length;
    targetElement.setSelectionRange(length, length);
  } else {
    targetElement.focus();
  }
};


/**
 * Check whether the given target element is a child of a scrollable layer and if so, set a flag on it.
 *
 * @param {EventTarget|Element} targetElement
 */
FastClick.prototype.updateScrollParent = function(targetElement) {
  'use strict';
  var scrollParent, parentElement;

  scrollParent = targetElement.fastClickScrollParent;

  // Attempt to discover whether the target element is contained within a scrollable layer. Re-check if the
  // target element was moved to another parent.
  if (!scrollParent || !scrollParent.contains(targetElement)) {
    parentElement = targetElement;
    do {
      if (parentElement.scrollHeight > parentElement.offsetHeight) {
        scrollParent = parentElement;
        targetElement.fastClickScrollParent = parentElement;
        break;
      }

      parentElement = parentElement.parentElement;
    } while (parentElement);
  }

  // Always update the scroll top tracker if possible.
  if (scrollParent) {
    scrollParent.fastClickLastScrollTop = scrollParent.scrollTop;
  }
};


/**
 * @param {EventTarget} targetElement
 * @returns {Element|EventTarget}
 */
FastClick.prototype.getTargetElementFromEventTarget = function(eventTarget) {
  'use strict';

  // On some older browsers (notably Safari on iOS 4.1 - see issue #56) the event target may be a text node.
  if (eventTarget.nodeType === Node.TEXT_NODE) {
    return eventTarget.parentNode;
  }

  return eventTarget;
};


/**
 * On touch start, record the position and scroll offset.
 *
 * @param {Event} event
 * @returns {boolean}
 */
FastClick.prototype.onTouchStart = function(event) {
  'use strict';
  var targetElement, touch, selection;

  // Ignore multiple touches, otherwise pinch-to-zoom is prevented if both fingers are on the FastClick element (issue #111).
  if (event.targetTouches.length > 1) {
    return true;
  }

  targetElement = this.getTargetElementFromEventTarget(event.target);
  touch = event.targetTouches[0];

  if (this.deviceIsIOS) {

    // Only trusted events will deselect text on iOS (issue #49)
    selection = window.getSelection();
    if (selection.rangeCount && !selection.isCollapsed) {
      return true;
    }

    if (!this.deviceIsIOS4) {

      // Weird things happen on iOS when an alert or confirm dialog is opened from a click event callback (issue #23):
      // when the user next taps anywhere else on the page, new touchstart and touchend events are dispatched
      // with the same identifier as the touch event that previously triggered the click that triggered the alert.
      // Sadly, there is an issue on iOS 4 that causes some normal touch events to have the same identifier as an
      // immediately preceeding touch event (issue #52), so this fix is unavailable on that platform.
      if (touch.identifier === this.lastTouchIdentifier) {
        event.preventDefault();
        return false;
      }

      this.lastTouchIdentifier = touch.identifier;

      // If the target element is a child of a scrollable layer (using -webkit-overflow-scrolling: touch) and:
      // 1) the user does a fling scroll on the scrollable layer
      // 2) the user stops the fling scroll with another tap
      // then the event.target of the last 'touchend' event will be the element that was under the user's finger
      // when the fling scroll was started, causing FastClick to send a click event to that layer - unless a check
      // is made to ensure that a parent layer was not scrolled before sending a synthetic click (issue #42).
      this.updateScrollParent(targetElement);
    }
  }

  this.trackingClick = true;
  this.trackingClickStart = event.timeStamp;
  this.targetElement = targetElement;

  this.touchStartX = touch.pageX;
  this.touchStartY = touch.pageY;

  // Prevent phantom clicks on fast double-tap (issue #36)
  if ((event.timeStamp - this.lastClickTime) < 200) {
    event.preventDefault();
  }

  return true;
};


/**
 * Based on a touchmove event object, check whether the touch has moved past a boundary since it started.
 *
 * @param {Event} event
 * @returns {boolean}
 */
FastClick.prototype.touchHasMoved = function(event) {
  'use strict';
  var touch = event.changedTouches[0], boundary = this.touchBoundary;

  if (Math.abs(touch.pageX - this.touchStartX) > boundary || Math.abs(touch.pageY - this.touchStartY) > boundary) {
    return true;
  }

  return false;
};


/**
 * Update the last position.
 *
 * @param {Event} event
 * @returns {boolean}
 */
FastClick.prototype.onTouchMove = function(event) {
  'use strict';
  if (!this.trackingClick) {
    return true;
  }

  // If the touch has moved, cancel the click tracking
  if (this.targetElement !== this.getTargetElementFromEventTarget(event.target) || this.touchHasMoved(event)) {
    this.trackingClick = false;
    this.targetElement = null;
  }

  return true;
};


/**
 * Attempt to find the labelled control for the given label element.
 *
 * @param {EventTarget|HTMLLabelElement} labelElement
 * @returns {Element|null}
 */
FastClick.prototype.findControl = function(labelElement) {
  'use strict';

  // Fast path for newer browsers supporting the HTML5 control attribute
  if (labelElement.control !== undefined) {
    return labelElement.control;
  }

  // All browsers under test that support touch events also support the HTML5 htmlFor attribute
  if (labelElement.htmlFor) {
    return document.getElementById(labelElement.htmlFor);
  }

  // If no for attribute exists, attempt to retrieve the first labellable descendant element
  // the list of which is defined here: http://www.w3.org/TR/html5/forms.html#category-label
  return labelElement.querySelector('button, input:not([type=hidden]), keygen, meter, output, progress, select, textarea');
};


/**
 * On touch end, determine whether to send a click event at once.
 *
 * @param {Event} event
 * @returns {boolean}
 */
FastClick.prototype.onTouchEnd = function(event) {
  'use strict';
  var forElement, trackingClickStart, targetTagName, scrollParent, touch, targetElement = this.targetElement;

  if (!this.trackingClick) {
    return true;
  }

  // Prevent phantom clicks on fast double-tap (issue #36)
  if ((event.timeStamp - this.lastClickTime) < 200) {
    this.cancelNextClick = true;
    return true;
  }

  // Reset to prevent wrong click cancel on input (issue #156).
  this.cancelNextClick = false;

  this.lastClickTime = event.timeStamp;

  trackingClickStart = this.trackingClickStart;
  this.trackingClick = false;
  this.trackingClickStart = 0;

  // On some iOS devices, the targetElement supplied with the event is invalid if the layer
  // is performing a transition or scroll, and has to be re-detected manually. Note that
  // for this to function correctly, it must be called *after* the event target is checked!
  // See issue #57; also filed as rdar://13048589 .
  if (this.deviceIsIOSWithBadTarget) {
    touch = event.changedTouches[0];

    // In certain cases arguments of elementFromPoint can be negative, so prevent setting targetElement to null
    targetElement = document.elementFromPoint(touch.pageX - window.pageXOffset, touch.pageY - window.pageYOffset) || targetElement;
    targetElement.fastClickScrollParent = this.targetElement.fastClickScrollParent;
  }

  targetTagName = targetElement.tagName.toLowerCase();
  if (targetTagName === 'label') {
    forElement = this.findControl(targetElement);
    if (forElement) {
      this.focus(targetElement);
      if (this.deviceIsAndroid) {
        return false;
      }

      targetElement = forElement;
    }
  } else if (this.needsFocus(targetElement)) {

    // Case 1: If the touch started a while ago (best guess is 100ms based on tests for issue #36) then focus will be triggered anyway. Return early and unset the target element reference so that the subsequent click will be allowed through.
    // Case 2: Without this exception for input elements tapped when the document is contained in an iframe, then any inputted text won't be visible even though the value attribute is updated as the user types (issue #37).
    if ((event.timeStamp - trackingClickStart) > 100 || (this.deviceIsIOS && window.top !== window && targetTagName === 'input')) {
      this.targetElement = null;
      return false;
    }

    this.focus(targetElement);

    // Select elements need the event to go through on iOS 4, otherwise the selector menu won't open.
    if (!this.deviceIsIOS4 || targetTagName !== 'select') {
      this.targetElement = null;
      event.preventDefault();
    }

    return false;
  }

  if (this.deviceIsIOS && !this.deviceIsIOS4) {

    // Don't send a synthetic click event if the target element is contained within a parent layer that was scrolled
    // and this tap is being used to stop the scrolling (usually initiated by a fling - issue #42).
    scrollParent = targetElement.fastClickScrollParent;
    if (scrollParent && scrollParent.fastClickLastScrollTop !== scrollParent.scrollTop) {
      return true;
    }
  }

  // Prevent the actual click from going though - unless the target node is marked as requiring
  // real clicks or if it is in the whitelist in which case only non-programmatic clicks are permitted.
  if (!this.needsClick(targetElement)) {
    event.preventDefault();
    this.sendClick(targetElement, event);
  }

  return false;
};


/**
 * On touch cancel, stop tracking the click.
 *
 * @returns {void}
 */
FastClick.prototype.onTouchCancel = function() {
  'use strict';
  this.trackingClick = false;
  this.targetElement = null;
};


/**
 * Determine mouse events which should be permitted.
 *
 * @param {Event} event
 * @returns {boolean}
 */
FastClick.prototype.onMouse = function(event) {
  'use strict';

  // If a target element was never set (because a touch event was never fired) allow the event
  if (!this.targetElement) {
    return true;
  }

  if (event.forwardedTouchEvent) {
    return true;
  }

  // Programmatically generated events targeting a specific element should be permitted
  if (!event.cancelable) {
    return true;
  }

  // Derive and check the target element to see whether the mouse event needs to be permitted;
  // unless explicitly enabled, prevent non-touch click events from triggering actions,
  // to prevent ghost/doubleclicks.
  if (!this.needsClick(this.targetElement) || this.cancelNextClick) {

    // Prevent any user-added listeners declared on FastClick element from being fired.
    if (event.stopImmediatePropagation) {
      event.stopImmediatePropagation();
    } else {

      // Part of the hack for browsers that don't support Event#stopImmediatePropagation (e.g. Android 2)
      event.propagationStopped = true;
    }

    // Cancel the event
    event.stopPropagation();
    event.preventDefault();

    return false;
  }

  // If the mouse event is permitted, return true for the action to go through.
  return true;
};


/**
 * On actual clicks, determine whether this is a touch-generated click, a click action occurring
 * naturally after a delay after a touch (which needs to be cancelled to avoid duplication), or
 * an actual click which should be permitted.
 *
 * @param {Event} event
 * @returns {boolean}
 */
FastClick.prototype.onClick = function(event) {
  'use strict';
  var permitted;

  // It's possible for another FastClick-like library delivered with third-party code to fire a click event before FastClick does (issue #44). In that case, set the click-tracking flag back to false and return early. This will cause onTouchEnd to return early.
  if (this.trackingClick) {
    this.targetElement = null;
    this.trackingClick = false;
    return true;
  }

  // Very odd behaviour on iOS (issue #18): if a submit element is present inside a form and the user hits enter in the iOS simulator or clicks the Go button on the pop-up OS keyboard the a kind of 'fake' click event will be triggered with the submit-type input element as the target.
  if (event.target.type === 'submit' && event.detail === 0) {
    return true;
  }

  permitted = this.onMouse(event);

  // Only unset targetElement if the click is not permitted. This will ensure that the check for !targetElement in onMouse fails and the browser's click doesn't go through.
  if (!permitted) {
    this.targetElement = null;
  }

  // If clicks are permitted, return true for the action to go through.
  return permitted;
};


/**
 * Remove all FastClick's event listeners.
 *
 * @returns {void}
 */
FastClick.prototype.destroy = function() {
  'use strict';
  var layer = this.layer;

  if (this.deviceIsAndroid) {
    layer.removeEventListener('mouseover', this.onMouse, true);
    layer.removeEventListener('mousedown', this.onMouse, true);
    layer.removeEventListener('mouseup', this.onMouse, true);
  }

  layer.removeEventListener('click', this.onClick, true);
  layer.removeEventListener('touchstart', this.onTouchStart, false);
  layer.removeEventListener('touchmove', this.onTouchMove, false);
  layer.removeEventListener('touchend', this.onTouchEnd, false);
  layer.removeEventListener('touchcancel', this.onTouchCancel, false);
};


/**
 * Check whether FastClick is needed.
 *
 * @param {Element} layer The layer to listen on
 */
FastClick.notNeeded = function(layer) {
  'use strict';
  var metaViewport;
  var chromeVersion;

  // Devices that don't support touch don't need FastClick
  if (typeof window.ontouchstart === 'undefined') {
    return true;
  }

  // Chrome version - zero for other browsers
  chromeVersion = +(/Chrome\/([0-9]+)/.exec(navigator.userAgent) || [,0])[1];

  if (chromeVersion) {

    if (FastClick.prototype.deviceIsAndroid) {
      metaViewport = document.querySelector('meta[name=viewport]');
      
      if (metaViewport) {
        // Chrome on Android with user-scalable="no" doesn't need FastClick (issue #89)
        if (metaViewport.content.indexOf('user-scalable=no') !== -1) {
          return true;
        }
        // Chrome 32 and above with width=device-width or less don't need FastClick
        if (chromeVersion > 31 && window.innerWidth <= window.screen.width) {
          return true;
        }
      }

    // Chrome desktop doesn't need FastClick (issue #15)
    } else {
      return true;
    }
  }

  // IE10 with -ms-touch-action: none, which disables double-tap-to-zoom (issue #97)
  if (layer.style.msTouchAction === 'none') {
    return true;
  }

  return false;
};


/**
 * Factory method for creating a FastClick object
 *
 * @param {Element} layer The layer to listen on
 */
FastClick.attach = function(layer) {
  'use strict';
  return new FastClick(layer);
};


if (typeof define !== 'undefined' && define.amd) {

  // AMD. Register as an anonymous module.
  define(function() {
    'use strict';
    return FastClick;
  });
} else if (typeof module !== 'undefined' && module.exports) {
  module.exports = FastClick.attach;
  module.exports.FastClick = FastClick;
} else {
  window.FastClick = FastClick;
}
(function(e){if("function"==typeof bootstrap)bootstrap("jade",e);else if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else if("undefined"!=typeof ses){if(!ses.ok())return;ses.makeJade=e}else"undefined"!=typeof window?window.jade=e():global.jade=e()})(function(){var define,ses,bootstrap,module,exports;
return (function(e,t,n){function i(n,s){if(!t[n]){if(!e[n]){var o=typeof require=="function"&&require;if(!s&&o)return o(n,!0);if(r)return r(n,!0);throw new Error("Cannot find module '"+n+"'")}var u=t[n]={exports:{}};e[n][0].call(u.exports,function(t){var r=e[n][1][t];return i(r?r:t)},u,u.exports)}return t[n].exports}var r=typeof require=="function"&&require;for(var s=0;s<n.length;s++)i(n[s]);return i})({1:[function(require,module,exports){

/*!
 * Jade - runtime
 * Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca>
 * MIT Licensed
 */

/**
 * Lame Array.isArray() polyfill for now.
 */

if (!Array.isArray) {
  Array.isArray = function(arr){
    return '[object Array]' == Object.prototype.toString.call(arr);
  };
}

/**
 * Lame Object.keys() polyfill for now.
 */

if (!Object.keys) {
  Object.keys = function(obj){
    var arr = [];
    for (var key in obj) {
      if (obj.hasOwnProperty(key)) {
        arr.push(key);
      }
    }
    return arr;
  }
}

/**
 * Merge two attribute objects giving precedence
 * to values in object `b`. Classes are special-cased
 * allowing for arrays and merging/joining appropriately
 * resulting in a string.
 *
 * @param {Object} a
 * @param {Object} b
 * @return {Object} a
 * @api private
 */

exports.merge = function merge(a, b) {
  var ac = a['class'];
  var bc = b['class'];

  if (ac || bc) {
    ac = ac || [];
    bc = bc || [];
    if (!Array.isArray(ac)) ac = [ac];
    if (!Array.isArray(bc)) bc = [bc];
    a['class'] = ac.concat(bc).filter(nulls);
  }

  for (var key in b) {
    if (key != 'class') {
      a[key] = b[key];
    }
  }

  return a;
};

/**
 * Filter null `val`s.
 *
 * @param {*} val
 * @return {Boolean}
 * @api private
 */

function nulls(val) {
  return val != null && val !== '';
}

/**
 * join array as classes.
 *
 * @param {*} val
 * @return {String}
 * @api private
 */

function joinClasses(val) {
  return Array.isArray(val) ? val.map(joinClasses).filter(nulls).join(' ') : val;
}

/**
 * Render the given attributes object.
 *
 * @param {Object} obj
 * @param {Object} escaped
 * @return {String}
 * @api private
 */

exports.attrs = function attrs(obj, escaped){
  var buf = []
    , terse = obj.terse;

  delete obj.terse;
  var keys = Object.keys(obj)
    , len = keys.length;

  if (len) {
    buf.push('');
    for (var i = 0; i < len; ++i) {
      var key = keys[i]
        , val = obj[key];

      if ('boolean' == typeof val || null == val) {
        if (val) {
          terse
            ? buf.push(key)
            : buf.push(key + '="' + key + '"');
        }
      } else if (0 == key.indexOf('data') && 'string' != typeof val) {
        buf.push(key + "='" + JSON.stringify(val) + "'");
      } else if ('class' == key) {
        if (escaped && escaped[key]){
          if (val = exports.escape(joinClasses(val))) {
            buf.push(key + '="' + val + '"');
          }
        } else {
          if (val = joinClasses(val)) {
            buf.push(key + '="' + val + '"');
          }
        }
      } else if (escaped && escaped[key]) {
        buf.push(key + '="' + exports.escape(val) + '"');
      } else {
        buf.push(key + '="' + val + '"');
      }
    }
  }

  return buf.join(' ');
};

/**
 * Escape the given string of `html`.
 *
 * @param {String} html
 * @return {String}
 * @api private
 */

exports.escape = function escape(html){
  return String(html)
    .replace(/&/g, '&amp;')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/"/g, '&quot;');
};

/**
 * Re-throw the given `err` in context to the
 * the jade in `filename` at the given `lineno`.
 *
 * @param {Error} err
 * @param {String} filename
 * @param {String} lineno
 * @api private
 */

exports.rethrow = function rethrow(err, filename, lineno, str){
  if (!(err instanceof Error)) throw err;
  if ((typeof window != 'undefined' || !filename) && !str) {
    err.message += ' on line ' + lineno;
    throw err;
  }
  try {
    str =  str || require('fs').readFileSync(filename, 'utf8')
  } catch (ex) {
    rethrow(err, null, lineno)
  }
  var context = 3
    , lines = str.split('\n')
    , start = Math.max(lineno - context, 0)
    , end = Math.min(lines.length, lineno + context);

  // Error context
  var context = lines.slice(start, end).map(function(line, i){
    var curr = i + start + 1;
    return (curr == lineno ? '  > ' : '    ')
      + curr
      + '| '
      + line;
  }).join('\n');

  // Alter exception message
  err.path = filename;
  err.message = (filename || 'Jade') + ':' + lineno
    + '\n' + context + '\n\n' + err.message;
  throw err;
};

},{"fs":2}],2:[function(require,module,exports){
// nothing to see here... no file methods for the browser

},{}]},{},[1])(1)
});
;

/*!
 * jQuery Cookie Plugin v1.4.0
 * https://github.com/carhartl/jquery-cookie
 *
 * Copyright 2013 Klaus Hartl
 * Released under the MIT license
 */
(function (factory) {
  if (typeof define === 'function' && define.amd) {
    // AMD. Register as anonymous module.
    define(['jquery'], factory);
  } else {
    // Browser globals.
    factory(jQuery);
  }
}(function ($) {

  var pluses = /\+/g;

  function encode(s) {
    return config.raw ? s : encodeURIComponent(s);
  }

  function decode(s) {
    return config.raw ? s : decodeURIComponent(s);
  }

  function stringifyCookieValue(value) {
    return encode(config.json ? JSON.stringify(value) : String(value));
  }

  function parseCookieValue(s) {
    if (s.indexOf('"') === 0) {
      // This is a quoted cookie as according to RFC2068, unescape...
      s = s.slice(1, -1).replace(/\\"/g, '"').replace(/\\\\/g, '\\');
    }

    try {
      // Replace server-side written pluses with spaces.
      // If we can't decode the cookie, ignore it, it's unusable.
      // If we can't parse the cookie, ignore it, it's unusable.
      s = decodeURIComponent(s.replace(pluses, ' '));
      return config.json ? JSON.parse(s) : s;
    } catch(e) {}
  }

  function read(s, converter) {
    var value = config.raw ? s : parseCookieValue(s);
    return $.isFunction(converter) ? converter(value) : value;
  }

  var config = $.cookie = function (key, value, options) {

    // Write

    if (value !== undefined && !$.isFunction(value)) {
      options = $.extend({}, config.defaults, options);

      if (typeof options.expires === 'number') {
        var days = options.expires, t = options.expires = new Date();
        t.setTime(+t + days * 864e+5);
      }

      return (document.cookie = [
        encode(key), '=', stringifyCookieValue(value),
        options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
        options.path    ? '; path=' + options.path : '',
        options.domain  ? '; domain=' + options.domain : '',
        options.secure  ? '; secure' : ''
      ].join(''));
    }

    // Read

    var result = key ? undefined : {};

    // To prevent the for loop in the first place assign an empty array
    // in case there are no cookies at all. Also prevents odd result when
    // calling $.cookie().
    var cookies = document.cookie ? document.cookie.split('; ') : [];

    for (var i = 0, l = cookies.length; i < l; i++) {
      var parts = cookies[i].split('=');
      var name = decode(parts.shift());
      var cookie = parts.join('=');

      if (key && key === name) {
        // If second argument (value) is a function it's a converter...
        result = read(cookie, value);
        break;
      }

      // Prevent storing a cookie that we couldn't decode.
      if (!key && (cookie = read(cookie)) !== undefined) {
        result[name] = cookie;
      }
    }

    return result;
  };

  config.defaults = {};

  $.removeCookie = function (key, options) {
    if ($.cookie(key) === undefined) {
      return false;
    }

    // Must not alter options, thus extending a fresh object...
    $.cookie(key, '', $.extend({}, options, { expires: -1 }));
    return !$.cookie(key);
  };

}));

/*
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 *
 * Uses the built in easing capabilities added In jQuery 1.1
 * to offer multiple easing options
 *
 * TERMS OF USE - jQuery Easing
 * 
 * Open source under the BSD License. 
 * 
 * Copyright © 2008 George McGinley Smith
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
*/

// t: current time, b: begInnIng value, c: change In value, d: duration
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
  def: 'easeOutQuad',
  swing: function (x, t, b, c, d) {
    //alert(jQuery.easing.default);
    return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
  },
  easeInQuad: function (x, t, b, c, d) {
    return c*(t/=d)*t + b;
  },
  easeOutQuad: function (x, t, b, c, d) {
    return -c *(t/=d)*(t-2) + b;
  },
  easeInOutQuad: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return c/2*t*t + b;
    return -c/2 * ((--t)*(t-2) - 1) + b;
  },
  easeInCubic: function (x, t, b, c, d) {
    return c*(t/=d)*t*t + b;
  },
  easeOutCubic: function (x, t, b, c, d) {
    return c*((t=t/d-1)*t*t + 1) + b;
  },
  easeInOutCubic: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return c/2*t*t*t + b;
    return c/2*((t-=2)*t*t + 2) + b;
  },
  easeInQuart: function (x, t, b, c, d) {
    return c*(t/=d)*t*t*t + b;
  },
  easeOutQuart: function (x, t, b, c, d) {
    return -c * ((t=t/d-1)*t*t*t - 1) + b;
  },
  easeInOutQuart: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
    return -c/2 * ((t-=2)*t*t*t - 2) + b;
  },
  easeInQuint: function (x, t, b, c, d) {
    return c*(t/=d)*t*t*t*t + b;
  },
  easeOutQuint: function (x, t, b, c, d) {
    return c*((t=t/d-1)*t*t*t*t + 1) + b;
  },
  easeInOutQuint: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
    return c/2*((t-=2)*t*t*t*t + 2) + b;
  },
  easeInSine: function (x, t, b, c, d) {
    return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
  },
  easeOutSine: function (x, t, b, c, d) {
    return c * Math.sin(t/d * (Math.PI/2)) + b;
  },
  easeInOutSine: function (x, t, b, c, d) {
    return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
  },
  easeInExpo: function (x, t, b, c, d) {
    return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
  },
  easeOutExpo: function (x, t, b, c, d) {
    return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
  },
  easeInOutExpo: function (x, t, b, c, d) {
    if (t==0) return b;
    if (t==d) return b+c;
    if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
    return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
  },
  easeInCirc: function (x, t, b, c, d) {
    return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
  },
  easeOutCirc: function (x, t, b, c, d) {
    return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
  },
  easeInOutCirc: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
    return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
  },
  easeInElastic: function (x, t, b, c, d) {
    var s=1.70158;var p=0;var a=c;
    if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
    if (a < Math.abs(c)) { a=c; var s=p/4; }
    else var s = p/(2*Math.PI) * Math.asin (c/a);
    return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
  },
  easeOutElastic: function (x, t, b, c, d) {
    var s=1.70158;var p=0;var a=c;
    if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
    if (a < Math.abs(c)) { a=c; var s=p/4; }
    else var s = p/(2*Math.PI) * Math.asin (c/a);
    return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
  },
  easeInOutElastic: function (x, t, b, c, d) {
    var s=1.70158;var p=0;var a=c;
    if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
    if (a < Math.abs(c)) { a=c; var s=p/4; }
    else var s = p/(2*Math.PI) * Math.asin (c/a);
    if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
    return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
  },
  easeInBack: function (x, t, b, c, d, s) {
    if (s == undefined) s = 1.70158;
    return c*(t/=d)*t*((s+1)*t - s) + b;
  },
  easeOutBack: function (x, t, b, c, d, s) {
    if (s == undefined) s = 1.70158;
    return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
  },
  easeInOutBack: function (x, t, b, c, d, s) {
    if (s == undefined) s = 1.70158; 
    if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
    return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
  },
  easeInBounce: function (x, t, b, c, d) {
    return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
  },
  easeOutBounce: function (x, t, b, c, d) {
    if ((t/=d) < (1/2.75)) {
      return c*(7.5625*t*t) + b;
    } else if (t < (2/2.75)) {
      return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
    } else if (t < (2.5/2.75)) {
      return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
    } else {
      return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
    }
  },
  easeInOutBounce: function (x, t, b, c, d) {
    if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
    return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
  }
});

/*
 *
 * TERMS OF USE - EASING EQUATIONS
 * 
 * Open source under the BSD License. 
 * 
 * Copyright © 2001 Robert Penner
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
 */

/*!
 * jQuery Transit - CSS3 transitions and transformations
 * (c) 2011-2012 Rico Sta. Cruz <rico@ricostacruz.com>
 * MIT Licensed.
 *
 * http://ricostacruz.com/jquery.transit
 * http://github.com/rstacruz/jquery.transit
 */
(function(k){k.transit={version:"0.9.9",propertyMap:{marginLeft:"margin",marginRight:"margin",marginBottom:"margin",marginTop:"margin",paddingLeft:"padding",paddingRight:"padding",paddingBottom:"padding",paddingTop:"padding"},enabled:true,useTransitionEnd:false};var d=document.createElement("div");var q={};function b(v){if(v in d.style){return v}var u=["Moz","Webkit","O","ms"];var r=v.charAt(0).toUpperCase()+v.substr(1);if(v in d.style){return v}for(var t=0;t<u.length;++t){var s=u[t]+r;if(s in d.style){return s}}}function e(){d.style[q.transform]="";d.style[q.transform]="rotateY(90deg)";return d.style[q.transform]!==""}var a=navigator.userAgent.toLowerCase().indexOf("chrome")>-1;q.transition=b("transition");q.transitionDelay=b("transitionDelay");q.transform=b("transform");q.transformOrigin=b("transformOrigin");q.transform3d=e();var i={transition:"transitionEnd",MozTransition:"transitionend",OTransition:"oTransitionEnd",WebkitTransition:"webkitTransitionEnd",msTransition:"MSTransitionEnd"};var f=q.transitionEnd=i[q.transition]||null;for(var p in q){if(q.hasOwnProperty(p)&&typeof k.support[p]==="undefined"){k.support[p]=q[p]}}d=null;k.cssEase={_default:"ease","in":"ease-in",out:"ease-out","in-out":"ease-in-out",snap:"cubic-bezier(0,1,.5,1)",easeOutCubic:"cubic-bezier(.215,.61,.355,1)",easeInOutCubic:"cubic-bezier(.645,.045,.355,1)",easeInCirc:"cubic-bezier(.6,.04,.98,.335)",easeOutCirc:"cubic-bezier(.075,.82,.165,1)",easeInOutCirc:"cubic-bezier(.785,.135,.15,.86)",easeInExpo:"cubic-bezier(.95,.05,.795,.035)",easeOutExpo:"cubic-bezier(.19,1,.22,1)",easeInOutExpo:"cubic-bezier(1,0,0,1)",easeInQuad:"cubic-bezier(.55,.085,.68,.53)",easeOutQuad:"cubic-bezier(.25,.46,.45,.94)",easeInOutQuad:"cubic-bezier(.455,.03,.515,.955)",easeInQuart:"cubic-bezier(.895,.03,.685,.22)",easeOutQuart:"cubic-bezier(.165,.84,.44,1)",easeInOutQuart:"cubic-bezier(.77,0,.175,1)",easeInQuint:"cubic-bezier(.755,.05,.855,.06)",easeOutQuint:"cubic-bezier(.23,1,.32,1)",easeInOutQuint:"cubic-bezier(.86,0,.07,1)",easeInSine:"cubic-bezier(.47,0,.745,.715)",easeOutSine:"cubic-bezier(.39,.575,.565,1)",easeInOutSine:"cubic-bezier(.445,.05,.55,.95)",easeInBack:"cubic-bezier(.6,-.28,.735,.045)",easeOutBack:"cubic-bezier(.175, .885,.32,1.275)",easeInOutBack:"cubic-bezier(.68,-.55,.265,1.55)"};k.cssHooks["transit:transform"]={get:function(r){return k(r).data("transform")||new j()},set:function(s,r){var t=r;if(!(t instanceof j)){t=new j(t)}if(q.transform==="WebkitTransform"&&!a){s.style[q.transform]=t.toString(true)}else{s.style[q.transform]=t.toString()}k(s).data("transform",t)}};k.cssHooks.transform={set:k.cssHooks["transit:transform"].set};if(k.fn.jquery<"1.8"){k.cssHooks.transformOrigin={get:function(r){return r.style[q.transformOrigin]},set:function(r,s){r.style[q.transformOrigin]=s}};k.cssHooks.transition={get:function(r){return r.style[q.transition]},set:function(r,s){r.style[q.transition]=s}}}n("scale");n("translate");n("rotate");n("rotateX");n("rotateY");n("rotate3d");n("perspective");n("skewX");n("skewY");n("x",true);n("y",true);function j(r){if(typeof r==="string"){this.parse(r)}return this}j.prototype={setFromString:function(t,s){var r=(typeof s==="string")?s.split(","):(s.constructor===Array)?s:[s];r.unshift(t);j.prototype.set.apply(this,r)},set:function(s){var r=Array.prototype.slice.apply(arguments,[1]);if(this.setter[s]){this.setter[s].apply(this,r)}else{this[s]=r.join(",")}},get:function(r){if(this.getter[r]){return this.getter[r].apply(this)}else{return 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(function UMDish(name, context, definition) {  context[name] = definition.call(context);  if (typeof module !== "undefined" && module.exports) {    module.exports = context[name];  } else if (typeof define == "function" && define.amd) {    define(function reference() { return context[name]; });  }})("Primus", this, function Primus() {/*globals require, define */
'use strict';

/**
 * Representation of a single EventEmitter function.
 *
 * @param {Function} fn Event handler to be called.
 * @param {Mixed} context Context for function execution.
 * @param {Boolean} once Only emit once
 * @api private
 */
function EE(fn, context, once) {
  this.fn = fn;
  this.context = context;
  this.once = once || false;
}

/**
 * Minimal EventEmitter interface that is molded against the Node.js
 * EventEmitter interface.
 *
 * @constructor
 * @api public
 */
function EventEmitter() { /* Nothing to set */ }

/**
 * Holds the assigned EventEmitters by name.
 *
 * @type {Object}
 * @private
 */
EventEmitter.prototype._events = undefined;

/**
 * Return a list of assigned event listeners.
 *
 * @param {String} event The events that should be listed.
 * @returns {Array}
 * @api public
 */
EventEmitter.prototype.listeners = function listeners(event) {
  if (!this._events || !this._events[event]) return [];

  for (var i = 0, l = this._events[event].length, ee = []; i < l; i++) {
    ee.push(this._events[event][i].fn);
  }

  return ee;
};

/**
 * Emit an event to all registered event listeners.
 *
 * @param {String} event The name of the event.
 * @returns {Boolean} Indication if we've emitted an event.
 * @api public
 */
EventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
  if (!this._events || !this._events[event]) return false;

  var listeners = this._events[event]
    , length = listeners.length
    , len = arguments.length
    , ee = listeners[0]
    , args
    , i, j;

  if (1 === length) {
    if (ee.once) this.removeListener(event, ee.fn, true);

    switch (len) {
      case 1: return ee.fn.call(ee.context), true;
      case 2: return ee.fn.call(ee.context, a1), true;
      case 3: return ee.fn.call(ee.context, a1, a2), true;
      case 4: return ee.fn.call(ee.context, a1, a2, a3), true;
      case 5: return ee.fn.call(ee.context, a1, a2, a3, a4), true;
      case 6: return ee.fn.call(ee.context, a1, a2, a3, a4, a5), true;
    }

    for (i = 1, args = new Array(len -1); i < len; i++) {
      args[i - 1] = arguments[i];
    }

    ee.fn.apply(ee.context, args);
  } else {
    for (i = 0; i < length; i++) {
      if (listeners[i].once) this.removeListener(event, listeners[i].fn, true);

      switch (len) {
        case 1: listeners[i].fn.call(listeners[i].context); break;
        case 2: listeners[i].fn.call(listeners[i].context, a1); break;
        case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;
        default:
          if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {
            args[j - 1] = arguments[j];
          }

          listeners[i].fn.apply(listeners[i].context, args);
      }
    }
  }

  return true;
};

/**
 * Register a new EventListener for the given event.
 *
 * @param {String} event Name of the event.
 * @param {Functon} fn Callback function.
 * @param {Mixed} context The context of the function.
 * @api public
 */
EventEmitter.prototype.on = function on(event, fn, context) {
  if (!this._events) this._events = {};
  if (!this._events[event]) this._events[event] = [];
  this._events[event].push(new EE( fn, context || this ));

  return this;
};

/**
 * Add an EventListener that's only called once.
 *
 * @param {String} event Name of the event.
 * @param {Function} fn Callback function.
 * @param {Mixed} context The context of the function.
 * @api public
 */
EventEmitter.prototype.once = function once(event, fn, context) {
  if (!this._events) this._events = {};
  if (!this._events[event]) this._events[event] = [];
  this._events[event].push(new EE(fn, context || this, true ));

  return this;
};

/**
 * Remove event listeners.
 *
 * @param {String} event The event we want to remove.
 * @param {Function} fn The listener that we need to find.
 * @param {Boolean} once Only remove once listeners.
 * @api public
 */
EventEmitter.prototype.removeListener = function removeListener(event, fn, once) {
  if (!this._events || !this._events[event]) return this;

  var listeners = this._events[event]
    , events = [];

  if (fn) for (var i = 0, length = listeners.length; i < length; i++) {
    if (listeners[i].fn !== fn && listeners[i].once !== once) {
      events.push(listeners[i]);
    }
  }

  //
  // Reset the array, or remove it completely if we have no more listeners.
  //
  if (events.length) this._events[event] = events;
  else this._events[event] = null;

  return this;
};

/**
 * Remove all listeners or only the listeners for the specified event.
 *
 * @param {String} event The event want to remove all listeners for.
 * @api public
 */
EventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {
  if (!this._events) return this;

  if (event) this._events[event] = null;
  else this._events = {};

  return this;
};

//
// Alias methods names because people roll like that.
//
EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
EventEmitter.prototype.addListener = EventEmitter.prototype.on;

//
// This function doesn't apply anymore.
//
EventEmitter.prototype.setMaxListeners = function setMaxListeners() {
  return this;
};

/**
 * Context assertion, ensure that some of our public Primus methods are called
 * with the correct context to ensure that
 *
 * @param {Primus} self The context of the function.
 * @param {String} method The method name.
 * @api private
 */
function context(self, method) {
  if (self instanceof Primus) return;

  var failure = new Error('Primus#'+ method + '\'s context should called with a Primus instance');

  if ('function' !== typeof self.listeners || !self.listeners('error').length) {
    throw failure;
  }

  self.emit('error', failure);
}

//
// Sets the default connection URL, it uses the default origin of the browser
// when supported but degrades for older browsers. In Node.js, we cannot guess
// where the user wants to connect to, so we just default to localhost.
//
var defaultUrl;

try {
  if (location.origin) {
    defaultUrl = location.origin;
  } else {
    defaultUrl = location.protocol +'//'+ location.hostname + (location.port ? ':'+ location.port : '');
  }
} catch (e) {
  defaultUrl = 'http://127.0.0.1';
}

/**
 * Primus in a real-time library agnostic framework for establishing real-time
 * connections with servers.
 *
 * Options:
 * - reconnect, configuration for the reconnect process.
 * - manual, don't automatically call `.open` to start the connection.
 * - websockets, force the use of WebSockets, even when you should avoid them.
 * - timeout, connect timeout, server didn't respond in a timely manner.
 * - ping, The heartbeat interval for sending a ping packet to the server.
 * - pong, The heartbeat timeout for receiving a response to the ping.
 * - network, Use network events as leading method for network connection drops.
 * - strategy, Reconnection strategies.
 * - transport, Transport options.
 * - url, uri, The URL to use connect with the server.
 *
 * @constructor
 * @param {String} url The URL of your server.
 * @param {Object} options The configuration.
 * @api public
 */
function Primus(url, options) {
  if (!(this instanceof Primus)) return new Primus(url, options);
  if ('function' !== typeof this.client) {
    var message = 'The client library has not been compiled correctly, ' +
      'see https://github.com/primus/primus#client-library for more details';
    return this.critical(new Error(message));
  }

  if ('object' === typeof url) {
    options = url;
    url = options.url || options.uri || defaultUrl;
  } else {
    options = options || {};
  }

  var primus = this;

  // The maximum number of messages that can be placed in queue.
  options.queueSize = 'queueSize' in options ? options.queueSize : Infinity;

  // Connection timeout duration.
  options.timeout = 'timeout' in options ? options.timeout : 10e3;

  // Stores the back off configuration.
  options.reconnect = 'reconnect' in options ? options.reconnect : {};

  // Heartbeat ping interval.
  options.ping = 'ping' in options ? options.ping : 25000;

  // Heartbeat pong response timeout.
  options.pong = 'pong' in options ? options.pong : 10e3;

  // Reconnect strategies.
  options.strategy = 'strategy' in options ? options.strategy : [];

  // Custom transport options.
  options.transport = 'transport' in options ? options.transport : {};

  primus.buffer = [];                           // Stores premature send data.
  primus.writable = true;                       // Silly stream compatibility.
  primus.readable = true;                       // Silly stream compatibility.
  primus.url = primus.parse(url || defaultUrl); // Parse the URL to a readable format.
  primus.readyState = Primus.CLOSED;            // The readyState of the connection.
  primus.options = options;                     // Reference to the supplied options.
  primus.timers = {};                           // Contains all our timers.
  primus.attempt = null;                        // Current back off attempt.
  primus.socket = null;                         // Reference to the internal connection.
  primus.latency = 0;                           // Latency between messages.
  primus.stamps = 0;                            // Counter to make timestamps unqiue.
  primus.disconnect = false;                    // Did we receive a disconnect packet?
  primus.transport = options.transport;         // Transport options.
  primus.transformers = {                       // Message transformers.
    outgoing: [],
    incoming: []
  };

  //
  // Parse the reconnection strategy. It can have the following strategies:
  //
  // - timeout: Reconnect when we have a network timeout.
  // - disconnect: Reconnect when we have an unexpected disconnect.
  // - online: Reconnect when we're back online.
  //
  if ('string' === typeof options.strategy) {
    options.strategy = options.strategy.split(/\s?\,\s?/g);
  }

  if (false === options.strategy) {
    //
    // Strategies are disabled, but we still need an empty array to join it in
    // to nothing.
    //
    options.strategy = [];
  } else if (!options.strategy.length) {
    options.strategy.push('disconnect', 'online');

    //
    // Timeout based reconnection should only be enabled conditionally. When
    // authorization is enabled it could trigger.
    //
    if (!this.authorization) options.strategy.push('timeout');
  }

  options.strategy = options.strategy.join(',').toLowerCase();

  //
  // Only initialise the EventEmitter interface if we're running in a plain
  // browser environment. The Stream interface is inherited differently when it
  // runs on browserify and on Node.js.
  //
  if (!Stream) EventEmitter.call(primus);

  //
  // Force the use of WebSockets, even when we've detected some potential
  // broken WebSocket implementation.
  //
  if ('websockets' in options) {
    primus.AVOID_WEBSOCKETS = !options.websockets;
  }

  //
  // Force or disable the use of NETWORK events as leading client side
  // disconnection detection.
  //
  if ('network' in options) {
    primus.NETWORK_EVENTS = options.network;
  }

  //
  // Check if the user wants to manually initialise a connection. If they don't,
  // we want to do it after a really small timeout so we give the users enough
  // time to listen for `error` events etc.
  //
  if (!options.manual) primus.timers.open = setTimeout(function open() {
    primus.clearTimeout('open').open();
  }, 0);

  primus.initialise(options);
}

/**
 * Simple require wrapper to make browserify, node and require.js play nice.
 *
 * @param {String} name The module to require.
 * @returns {Object|Undefined} The module that we required.
 * @api private
 */
Primus.require = function requires(name) {
  if ('function' !== typeof require) return undefined;

  return !('function' === typeof define && define.amd)
    ? require(name)
    : undefined;
};

//
// It's possible that we're running in Node.js or in a Node.js compatible
// environment such as browserify. In these cases we want to use some build in
// libraries to minimize our dependence on the DOM.
//
var Stream, parse;

try {
  Primus.Stream = Stream = Primus.require('stream');
  parse = Primus.require('url').parse;

  //
  // Normally inheritance is done in the same way as we do in our catch
  // statement. But due to changes to the EventEmitter interface in Node 0.10
  // this will trigger annoying memory leak warnings and other potential issues
  // outlined in the issue linked below.
  //
  // @see https://github.com/joyent/node/issues/4971
  //
  Primus.require('util').inherits(Primus, Stream);
} catch (e) {
  Primus.Stream = EventEmitter;
  Primus.prototype = new EventEmitter();

  //
  // In the browsers we can leverage the DOM to parse the URL for us. It will
  // automatically default to host of the current server when we supply it path
  // etc.
  //
  parse = function parse(url) {
    var a = document.createElement('a')
      , data = {}
      , key;

    a.href = url;

    //
    // Transform it from a readOnly object to a read/writable object so we can
    // change some parsed values. This is required if we ever want to override
    // a port number etc. (as browsers remove port 443 and 80 from the URL's).
    //
    for (key in a) {
      if ('string' === typeof a[key] || 'number' === typeof a[key]) {
        data[key] = a[key];
      }
    }

    //
    // If we don't obtain a port number (e.g. when using zombie) then try
    // and guess at a value from the 'href' value.
    //
    if (!data.port) {
      var splits = (data.href || '').split('/');
      if (splits.length > 2) {
        var host = splits[2]
          , atSignIndex = host.lastIndexOf('@');

        if (~atSignIndex) host = host.slice(atSignIndex + 1);

        splits = host.split(':');
        if (splits.length === 2) data.port = splits[1];
      }
    }

    //
    // IE quirk: The `protocol` is parsed as ":" when a protocol agnostic URL
    // is used. In this case we extract the value from the `href` value.
    //
    if (':' === data.protocol) {
      data.protocol = data.href.substr(0, data.href.indexOf(':') + 1);
    }

    //
    // Safari 5.1.7 (windows) quirk: When parsing a URL without a port number
    // the `port` in the data object will default to "0" instead of the expected
    // "". We're going to do an explicit check on "0" and force it to "".
    //
    if ('0' === data.port) data.port = '';

    //
    // Browsers do not parse authorization information, so we need to extract
    // that from the URL.
    //
    if (~data.href.indexOf('@') && !data.auth) {
      var start = data.protocol.length + 2;
      data.auth = data.href.slice(start, data.href.indexOf(data.pathname, start)).split('@')[0];
    }

    return data;
  };
}

/**
 * Primus readyStates, used internally to set the correct ready state.
 *
 * @type {Number}
 * @private
 */
Primus.OPENING = 1;   // We're opening the connection.
Primus.CLOSED  = 2;   // No active connection.
Primus.OPEN    = 3;   // The connection is open.

/**
 * Are we working with a potentially broken WebSockets implementation? This
 * boolean can be used by transformers to remove `WebSockets` from their
 * supported transports.
 *
 * @type {Boolean}
 * @private
 */
Primus.prototype.AVOID_WEBSOCKETS = false;

/**
 * Some browsers support registering emitting `online` and `offline` events when
 * the connection has been dropped on the client. We're going to detect it in
 * a simple `try {} catch (e) {}` statement so we don't have to do complicated
 * feature detection.
 *
 * @type {Boolean}
 * @private
 */
Primus.prototype.NETWORK_EVENTS = false;
Primus.prototype.online = true;

try {
  if (
       Primus.prototype.NETWORK_EVENTS = 'onLine' in navigator
    && (window.addEventListener || document.body.attachEvent)
  ) {
    if (!navigator.onLine) {
      Primus.prototype.online = false;
    }
  }
} catch (e) { }

/**
 * The Ark contains all our plugins definitions. It's namespaced by
 * name => plugin.
 *
 * @type {Object}
 * @private
 */
Primus.prototype.ark = {};

/**
 * Return the given plugin.
 *
 * @param {String} name The name of the plugin.
 * @returns {Object|undefined} The plugin or undefined.
 * @api public
 */
Primus.prototype.plugin = function plugin(name) {
  context(this, 'plugin');

  if (name) return this.ark[name];

  var plugins = {};

  for (name in this.ark) {
    plugins[name] = this.ark[name];
  }

  return plugins;
};

/**
 * Checks if the given event is an emitted event by Primus.
 *
 * @param {String} evt The event name.
 * @returns {Boolean} Indication of the event is reserved for internal use.
 * @api public
 */
Primus.prototype.reserved = function reserved(evt) {
  return (/^(incoming|outgoing)::/).test(evt)
  || evt in this.reserved.events;
};

/**
 * The actual events that are used by the client.
 *
 * @type {Object}
 * @public
 */
Primus.prototype.reserved.events = {
  readyStateChange: 1,
  reconnecting: 1,
  reconnected: 1,
  reconnect: 1,
  offline: 1,
  timeout: 1,
  online: 1,
  error: 1,
  close: 1,
  open: 1,
  data: 1,
  end: 1
};

/**
 * Initialise the Primus and setup all parsers and internal listeners.
 *
 * @param {Object} options The original options object.
 * @returns {Primus}
 * @api private
 */
Primus.prototype.initialise = function initialise(options) {
  var primus = this
    , start;

  primus.on('outgoing::open', function opening() {
    var readyState = primus.readyState;

    primus.readyState = Primus.OPENING;
    if (readyState !== primus.readyState) {
      primus.emit('readyStateChange', 'opening');
    }

    start = +new Date();
  });

  primus.on('incoming::open', function opened() {
    var readyState = primus.readyState
      , reconnect = primus.attempt;

    if (primus.attempt) primus.attempt = null;

    //
    // The connection has been openend so we should set our state to
    // (writ|read)able so our stream compatibility works as intended.
    //
    primus.writable = true;
    primus.readable = true;

    //
    // Make sure we are flagged as `online` as we've successfully opened the
    // connection.
    //
    if (!primus.online) {
      primus.online = true;
      primus.emit('online');
    }

    primus.readyState = Primus.OPEN;
    if (readyState !== primus.readyState) {
      primus.emit('readyStateChange', 'open');
    }

    primus.latency = +new Date() - start;

    primus.emit('open');
    if (reconnect) primus.emit('reconnected');

    primus.clearTimeout('ping', 'pong').heartbeat();

    if (primus.buffer.length) {
      var data = primus.buffer.slice()
        , length = data.length
        , i = 0;

      primus.buffer.length = 0;

      for (; i < length; i++) {
        primus._write(data[i]);
      }
    }
  });

  primus.on('incoming::pong', function pong(time) {
    primus.online = true;
    primus.clearTimeout('pong').heartbeat();

    primus.latency = (+new Date()) - time;
  });

  primus.on('incoming::error', function error(e) {
    var connect = primus.timers.connect
      , err = e;

    //
    // We're still doing a reconnect attempt, it could be that we failed to
    // connect because the server was down. Failing connect attempts should
    // always emit an `error` event instead of a `open` event.
    //
    if (primus.attempt) return primus.reconnect();

    //
    // When the error is not an Error instance we try to normalize it.
    //
    if ('string' === typeof e) {
      err = new Error(e);
    } else if (!(e instanceof Error) && 'object' === typeof e) {
      //
      // BrowserChannel and SockJS returns an object which contains some
      // details of the error. In order to have a proper error we "copy" the
      // details in an Error instance.
      //
      err = new Error(e.message || e.reason);
      for (var key in e) {
        if (e.hasOwnProperty(key)) err[key] = e[key];
      }
    }
    if (primus.listeners('error').length) primus.emit('error', err);

    //
    // We received an error while connecting, this most likely the result of an
    // unauthorized access to the server. But this something that is only
    // triggered for Node based connections. Browsers trigger the error event.
    //
    if (connect) {
      if (~primus.options.strategy.indexOf('timeout')) primus.reconnect();
      else primus.end();
    }
  });

  primus.on('incoming::data', function message(raw) {
    primus.decoder(raw, function decoding(err, data) {
      //
      // Do a "save" emit('error') when we fail to parse a message. We don't
      // want to throw here as listening to errors should be optional.
      //
      if (err) return primus.listeners('error').length && primus.emit('error', err);

      //
      // Handle all "primus::" prefixed protocol messages.
      //
      if (primus.protocol(data)) return;
      primus.transforms(primus, primus, 'incoming', data, raw);
    });
  });

  primus.on('incoming::end', function end() {
    var readyState = primus.readyState;

    //
    // This `end` started with the receiving of a primus::server::close packet
    // which indicated that the user/developer on the server closed the
    // connection and it was not a result of a network disruption. So we should
    // kill the connection without doing a reconnect.
    //
    if (primus.disconnect) {
      primus.disconnect = false;
      return primus.end();
    }

    //
    // Always set the readyState to closed, and if we're still connecting, close
    // the connection so we're sure that everything after this if statement block
    // is only executed because our readyState is set to `open`.
    //
    primus.readyState = Primus.CLOSED;
    if (readyState !== primus.readyState) {
      primus.emit('readyStateChange', 'end');
    }

    if (primus.timers.connect) primus.end();
    if (readyState !== Primus.OPEN) return;

    this.writable = false;
    this.readable = false;

    //
    // Clear all timers in case we're not going to reconnect.
    //
    for (var timeout in this.timers) {
      this.clearTimeout(timeout);
    }

    //
    // Fire the `close` event as an indication of connection disruption.
    // This is also fired by `primus#end` so it is emitted in all cases.
    //
    primus.emit('close');

    //
    // The disconnect was unintentional, probably because the server has
    // shutdown, so if the reconnection is enabled start a reconnect procedure.
    //
    if (~primus.options.strategy.indexOf('disconnect')) {
      return primus.reconnect();
    }

    primus.emit('outgoing::end');
    primus.emit('end');
  });

  //
  // Setup the real-time client.
  //
  primus.client();

  //
  // Process the potential plugins.
  //
  for (var plugin in primus.ark) {
    primus.ark[plugin].call(primus, primus, options);
  }

  //
  // NOTE: The following code is only required if we're supporting network
  // events as it requires access to browser globals.
  //
  if (!primus.NETWORK_EVENTS) return primus;

  /**
   * Handler for offline notifications.
   *
   * @api private
   */
  function offline() {
    if (!primus.online) return; // Already or still offline, bailout.

    primus.online = false;
    primus.emit('offline');
    primus.end();
  }

  /**
   * Handler for online notifications.
   *
   * @api private
   */
  function online() {
    if (primus.online) return; // Already or still online, bailout

    primus.online = true;
    primus.emit('online');

    if (~primus.options.strategy.indexOf('online')) primus.reconnect();
  }

  if (window.addEventListener) {
    window.addEventListener('offline', offline, false);
    window.addEventListener('online', online, false);
  } else if (document.body.attachEvent){
    document.body.attachEvent('onoffline', offline);
    document.body.attachEvent('ononline', online);
  }

  return primus;
};

/**
 * Really dead simple protocol parser. We simply assume that every message that
 * is prefixed with `primus::` could be used as some sort of protocol definition
 * for Primus.
 *
 * @param {String} msg The data.
 * @returns {Boolean} Is a protocol message.
 * @api private
 */
Primus.prototype.protocol = function protocol(msg) {
  if (
       'string' !== typeof msg
    || msg.indexOf('primus::') !== 0
  ) return false;

  var last = msg.indexOf(':', 8)
    , value = msg.slice(last + 2);

  switch (msg.slice(8,  last)) {
    case 'pong':
      this.emit('incoming::pong', value);
    break;

    case 'server':
      //
      // The server is closing the connection, forcefully disconnect so we don't
      // reconnect again.
      //
      if ('close' === value) {
        this.disconnect = true;
      }
    break;

    case 'id':
      this.emit('incoming::id', value);
    break;

    //
    // Unknown protocol, somebody is probably sending `primus::` prefixed
    // messages.
    //
    default:
      return false;
  }

  return true;
};

/**
 * Execute the set of message transformers from Primus on the incoming or
 * outgoing message.
 * This function and it's content should be in sync with Spark#transforms in
 * spark.js.
 *
 * @param {Primus} primus Reference to the Primus instance with message transformers.
 * @param {Spark|Primus} connection Connection that receives or sends data.
 * @param {String} type The type of message, 'incoming' or 'outgoing'.
 * @param {Mixed} data The data to send or that has been received.
 * @param {String} raw The raw encoded data.
 * @returns {Primus}
 * @api public
 */
Primus.prototype.transforms = function transforms(primus, connection, type, data, raw) {
  var packet = { data: data }
    , fns = primus.transformers[type];

  //
  // Iterate in series over the message transformers so we can allow optional
  // asynchronous execution of message transformers which could for example
  // retrieve additional data from the server, do extra decoding or even
  // message validation.
  //
  (function transform(index, done) {
    var transformer = fns[index++];

    if (!transformer) return done();

    if (1 === transformer.length) {
      if (false === transformer.call(connection, packet)) {
        //
        // When false is returned by an incoming transformer it means that's
        // being handled by the transformer and we should not emit the `data`
        // event.
        //
        return;
      }

      return transform(index, done);
    }

    transformer.call(connection, packet, function finished(err, arg) {
      if (err) return connection.emit('error', err);
      if (false === arg) return;

      transform(index, done);
    });
  }(0, function done() {
    //
    // We always emit 2 arguments for the data event, the first argument is the
    // parsed data and the second argument is the raw string that we received.
    // This allows you, for example, to do some validation on the parsed data
    // and then save the raw string in your database without the stringify
    // overhead.
    //
    if ('incoming' === type) return connection.emit('data', packet.data, raw);

    connection._write(packet.data);
  }));

  return this;
};

/**
 * Retrieve the current id from the server.
 *
 * @param {Function} fn Callback function.
 * @returns {Primus}
 * @api public
 */
Primus.prototype.id = function id(fn) {
  if (this.socket && this.socket.id) return fn(this.socket.id);

  this.write('primus::id::');
  return this.once('incoming::id', fn);
};

/**
 * Establish a connection with the server. When this function is called we
 * assume that we don't have any open connections. If you do call it when you
 * have a connection open, it could cause duplicate connections.
 *
 * @returns {Primus}
 * @api public
 */
Primus.prototype.open = function open() {
  context(this, 'open');

  //
  // Only start a `connection timeout` procedure if we're not reconnecting as
  // that shouldn't count as an initial connection. This should be started
  // before the connection is opened to capture failing connections and kill the
  // timeout.
  //
  if (!this.attempt && this.options.timeout) this.timeout();

  this.emit('outgoing::open');
  return this;
};

/**
 * Send a new message.
 *
 * @param {Mixed} data The data that needs to be written.
 * @returns {Boolean} Always returns true as we don't support back pressure.
 * @api public
 */
Primus.prototype.write = function write(data) {
  context(this, 'write');
  this.transforms(this, this, 'outgoing', data);

  return true;
};

/**
 * The actual message writer.
 *
 * @param {Mixed} data The message that needs to be written.
 * @returns {Boolean} Successful write to the underlaying transport.
 * @api private
 */
Primus.prototype._write = function write(data) {
  var primus = this;

  //
  // The connection is closed, normally this would already be done in the
  // `spark.write` method, but as `_write` is used internally, we should also
  // add the same check here to prevent potential crashes by writing to a dead
  // socket.
  //
  if (Primus.OPEN !== primus.readyState) {
    //
    // If the buffer is at capacity, remove the first item.
    //
    if (this.buffer.length === this.options.queueSize) {
      this.buffer.splice(0, 1);
    }

    this.buffer.push(data);
    return false;
  }

  primus.encoder(data, function encoded(err, packet) {
    //
    // Do a "save" emit('error') when we fail to parse a message. We don't
    // want to throw here as listening to errors should be optional.
    //
    if (err) return primus.listeners('error').length && primus.emit('error', err);
    primus.emit('outgoing::data', packet);
  });

  return true;
};

/**
 * Send a new heartbeat over the connection to ensure that we're still
 * connected and our internet connection didn't drop. We cannot use server side
 * heartbeats for this unfortunately.
 *
 * @returns {Primus}
 * @api private
 */
Primus.prototype.heartbeat = function heartbeat() {
  var primus = this;

  if (!primus.options.ping) return primus;

  /**
   * Exterminate the connection as we've timed out.
   *
   * @api private
   */
  function pong() {
    primus.clearTimeout('pong');

    //
    // The network events already captured the offline event.
    //
    if (!primus.online) return;

    primus.online = false;
    primus.emit('offline');
    primus.emit('incoming::end');
  }

  /**
   * We should send a ping message to the server.
   *
   * @api private
   */
  function ping() {
    var value = +new Date();

    primus.clearTimeout('ping').write('primus::ping::'+ value);
    primus.emit('outgoing::ping', value);
    primus.timers.pong = setTimeout(pong, primus.options.pong);
  }

  primus.timers.ping = setTimeout(ping, primus.options.ping);
  return this;
};

/**
 * Start a connection timeout.
 *
 * @returns {Primus}
 * @api private
 */
Primus.prototype.timeout = function timeout() {
  var primus = this;

  /**
   * Remove all references to the timeout listener as we've received an event
   * that can be used to determine state.
   *
   * @api private
   */
  function remove() {
    primus.removeListener('error', remove)
          .removeListener('open', remove)
          .removeListener('end', remove)
          .clearTimeout('connect');
  }

  primus.timers.connect = setTimeout(function expired() {
    remove(); // Clean up old references.

    if (primus.readyState === Primus.OPEN || primus.attempt) return;

    primus.emit('timeout');

    //
    // We failed to connect to the server.
    //
    if (~primus.options.strategy.indexOf('timeout')) primus.reconnect();
    else primus.end();
  }, primus.options.timeout);

  return primus.on('error', remove)
    .on('open', remove)
    .on('end', remove);
};

/**
 * Properly clean up all `setTimeout` references.
 *
 * @param {String} ..args.. The names of the timeout's we need clear.
 * @returns {Primus}
 * @api private
 */
Primus.prototype.clearTimeout = function clear() {
  for (var args = arguments, i = 0, l = args.length; i < l; i++) {
    if (this.timers[args[i]]) clearTimeout(this.timers[args[i]]);
    delete this.timers[args[i]];
  }

  return this;
};

/**
 * Exponential back off algorithm for retry operations. It uses an randomized
 * retry so we don't DDOS our server when it goes down under pressure.
 *
 * @param {Function} callback Callback to be called after the timeout.
 * @param {Object} opts Options for configuring the timeout.
 * @returns {Primus}
 * @api private
 */
Primus.prototype.backoff = function backoff(callback, opts) {
  opts = opts || {};

  var primus = this;

  //
  // Bailout when we already have a backoff process running. We shouldn't call
  // the callback then as it might cause an unexpected `end` event as another
  // reconnect process is already running.
  //
  if (opts.backoff) return primus;

  opts.maxDelay = 'maxDelay' in opts ? opts.maxDelay : Infinity;  // Maximum delay.
  opts.minDelay = 'minDelay' in opts ? opts.minDelay : 500;       // Minimum delay.
  opts.retries = 'retries' in opts ? opts.retries : 10;           // Allowed retries.
  opts.attempt = (+opts.attempt || 0) + 1;                        // Current attempt.
  opts.factor = 'factor' in opts ? opts.factor : 2;               // Back off factor.

  //
  // Bailout if we are about to make to much attempts. Please note that we use
  // `>` because we already incremented the value above.
  //
  if (opts.attempt > opts.retries) {
    callback(new Error('Unable to retry'), opts);
    return primus;
  }

  //
  // Prevent duplicate back off attempts using the same options object.
  //
  opts.backoff = true;

  //
  // Calculate the timeout, but make it randomly so we don't retry connections
  // at the same interval and defeat the purpose. This exponential back off is
  // based on the work of:
  //
  // http://dthain.blogspot.nl/2009/02/exponential-backoff-in-distributed.html
  //
  opts.timeout = opts.attempt !== 1
    ? Math.min(Math.round(
        (Math.random() + 1) * opts.minDelay * Math.pow(opts.factor, opts.attempt)
      ), opts.maxDelay)
    : opts.minDelay;

  primus.timers.reconnect = setTimeout(function delay() {
    opts.backoff = false;
    primus.clearTimeout('reconnect');

    callback(undefined, opts);
  }, opts.timeout);

  //
  // Emit a `reconnecting` event with current reconnect options. This allows
  // them to update the UI and provide their users with feedback.
  //
  primus.emit('reconnecting', opts);

  return primus;
};

/**
 * Start a new reconnect procedure.
 *
 * @returns {Primus}
 * @api private
 */
Primus.prototype.reconnect = function reconnect() {
  var primus = this;

  //
  // Try to re-use the existing attempt.
  //
  primus.attempt = primus.attempt || primus.clone(primus.options.reconnect);

  primus.backoff(function attempt(fail, backoff) {
    if (fail) {
      primus.attempt = null;
      return primus.emit('end');
    }

    //
    // Try to re-open the connection again.
    //
    primus.emit('reconnect', backoff);
    primus.emit('outgoing::reconnect');
  }, primus.attempt);

  return primus;
};

/**
 * Close the connection completely.
 *
 * @param {Mixed} data last packet of data.
 * @returns {Primus}
 * @api public
 */
Primus.prototype.end = function end(data) {
  context(this, 'end');

  if (this.readyState === Primus.CLOSED && !this.timers.connect) {
    //
    // If we are reconnecting stop the reconnection procedure.
    //
    if (this.timers.reconnect) {
      this.clearTimeout('reconnect');
      this.attempt = null;
      this.emit('end');
    }

    return this;
  }

  if (data !== undefined) this.write(data);

  this.writable = false;
  this.readable = false;

  var readyState = this.readyState;
  this.readyState = Primus.CLOSED;

  if (readyState !== this.readyState) {
    this.emit('readyStateChange', 'end');
  }

  for (var timeout in this.timers) {
    this.clearTimeout(timeout);
  }

  this.emit('outgoing::end');
  this.emit('close');
  this.emit('end');

  return this;
};

/**
 * Create a shallow clone of a given object.
 *
 * @param {Object} obj The object that needs to be cloned.
 * @returns {Object} Copy.
 * @api private
 */
Primus.prototype.clone = function clone(obj) {
  return this.merge({}, obj);
};

/**
 * Merge different objects in to one target object.
 *
 * @param {Object} target The object where everything should be merged in.
 * @returns {Object} Original target with all merged objects.
 * @api private
 */
Primus.prototype.merge = function merge(target) {
  var args = Array.prototype.slice.call(arguments, 1);

  for (var i = 0, l = args.length, key, obj; i < l; i++) {
    obj = args[i];

    for (key in obj) {
      if (obj.hasOwnProperty(key)) target[key] = obj[key];
    }
  }

  return target;
};

/**
 * Parse the connection string.
 *
 * @type {Function}
 * @param {String} url Connection URL.
 * @returns {Object} Parsed connection.
 * @api private
 */
Primus.prototype.parse = parse;

/**
 * Parse a query string.
 *
 * @param {String} query The query string that needs to be parsed.
 * @returns {Object} Parsed query string.
 * @api private
 */
Primus.prototype.querystring = function querystring(query) {
  var parser = /([^=?&]+)=([^&]*)/g
    , result = {}
    , part;

  //
  // Little nifty parsing hack, leverage the fact that RegExp.exec increments
  // the lastIndex property so we can continue executing this loop until we've
  // parsed all results.
  //
  for (;
    part = parser.exec(query);
    result[decodeURIComponent(part[1])] = decodeURIComponent(part[2])
  );

  return result;
};

/**
 * Transform a query string object back in to string equiv.
 *
 * @param {Object} obj The query string object.
 * @returns {String}
 * @api private
 */
Primus.prototype.querystringify = function querystringify(obj) {
  var pairs = [];

  for (var key in obj) {
    if (obj.hasOwnProperty(key)) {
      pairs.push(encodeURIComponent(key) +'='+ encodeURIComponent(obj[key]));
    }
  }

  return pairs.join('&');
};

/**
 * Generates a connection URI.
 *
 * @param {String} protocol The protocol that should used to crate the URI.
 * @returns {String|options} The URL.
 * @api private
 */
Primus.prototype.uri = function uri(options) {
  var url = this.url
    , server = []
    , qsa = false;

  //
  // Query strings are only allowed when we've received clearance for it.
  //
  if (options.query) qsa = true;

  options = options || {};
  options.protocol = 'protocol' in options ? options.protocol : 'http';
  options.query = url.search && 'query' in options ? (url.search.charAt(0) === '?' ? url.search.slice(1) : url.search) : false;
  options.secure = 'secure' in options ? options.secure : (url.protocol === 'https:' || url.protocol === 'wss:');
  options.auth = 'auth' in options ? options.auth : url.auth;
  options.pathname = 'pathname' in options ? options.pathname : this.pathname.slice(1);
  options.port = 'port' in options ? +options.port : +url.port || (options.secure ? 443 : 80);
  options.host = 'host' in options ? options.host : url.hostname || url.host.replace(':'+ url.port, '');

  //
  // Allow transformation of the options before we construct a full URL from it.
  //
  this.emit('outgoing::url', options);

  //
  // `url.host` might be undefined (e.g. when using zombie) so we use the
  // hostname and port defined above.
  //
  var host = (443 !== options.port && 80 !== options.port)
    ? options.host +':'+ options.port
    : options.host;

  //
  // We need to make sure that we create a unique connection URL every time to
  // prevent bfcache back forward cache of becoming an issue. We're doing this
  // by forcing an cache busting query string in to the URL.
  //
  var querystring = this.querystring(options.query || '');
  querystring._primuscb = +new Date() +'-'+ this.stamps++;
  options.query = this.querystringify(querystring);

  //
  // Automatically suffix the protocol so we can supply `ws` and `http` and it gets
  // transformed correctly.
  //
  server.push(options.secure ? options.protocol +'s:' : options.protocol +':', '');

  if (options.auth) server.push(options.auth +'@'+ host);
  else server.push(host);

  //
  // Pathnames are optional as some Transformers would just use the pathname
  // directly.
  //
  if (options.pathname) server.push(options.pathname);

  //
  // Optionally add a search query, again, not supported by all Transformers.
  // SockJS is known to throw errors when a query string is included.
  //
  if (qsa) server.push('?'+ options.query);
  else delete options.query;

  if (options.object) return options;
  return server.join('/');
};

/**
 * Simple emit wrapper that returns a function that emits an event once it's
 * called. This makes it easier for transports to emit specific events. The
 * scope of this function is limited as it will only emit one single argument.
 *
 * @param {String} event Name of the event that we should emit.
 * @param {Function} parser Argument parser.
 * @returns {Function} The wrapped function that will emit events when called.
 * @api public
 */
Primus.prototype.emits = function emits(event, parser) {
  var primus = this;

  return function emit(arg) {
    var data = parser ? parser.apply(primus, arguments) : arg;

    //
    // Timeout is required to prevent crashes on WebSockets connections on
    // mobile devices. We need to handle these edge cases in our own library
    // as we cannot be certain that all frameworks fix these issues.
    //
    setTimeout(function timeout() {
      primus.emit('incoming::'+ event, data);
    }, 0);
  };
};

/**
 * Register a new message transformer. This allows you to easily manipulate incoming
 * and outgoing data which is particularity handy for plugins that want to send
 * meta data together with the messages.
 *
 * @param {String} type Incoming or outgoing
 * @param {Function} fn A new message transformer.
 * @returns {Primus}
 * @api public
 */
Primus.prototype.transform = function transform(type, fn) {
  context(this, 'transform');

  if (!(type in this.transformers)) {
    return this.critical(new Error('Invalid transformer type'));
  }

  this.transformers[type].push(fn);
  return this;
};

/**
 * A critical error has occurred, if we have an `error` listener, emit it there.
 * If not, throw it, so we get a stack trace + proper error message.
 *
 * @param {Error} err The critical error.
 * @returns {Primus}
 * @api private
 */
Primus.prototype.critical = function critical(err) {
  if (this.listeners('error').length) {
    this.emit('error', err);
    return this;
  }

  throw err;
};

/**
 * Syntax sugar, adopt a Socket.IO like API.
 *
 * @param {String} url The URL we want to connect to.
 * @param {Object} options Connection options.
 * @returns {Primus}
 * @api public
 */
Primus.connect = function connect(url, options) {
  return new Primus(url, options);
};

//
// Expose the EventEmitter so it can be re-used by wrapping libraries we're also
// exposing the Stream interface.
//
Primus.EventEmitter = EventEmitter;

//
// These libraries are automatically are automatically inserted at the
// server-side using the Primus#library method.
//
Primus.prototype.client = function client() {
  var primus = this
    , socket;

  //
  // Selects an available Engine.IO factory.
  //
  var Factory = (function Factory() {
    if ('undefined' !== typeof SockJS) return SockJS;

    try { return Primus.require('sockjs-client-node'); }
    catch (e) {}

    return undefined;
  })();

  if (!Factory) return primus.critical(new Error('Missing required `sockjs-client-node` module. Please run `npm install --save sockjs-client-node`'));

  //
  // Connect to the given URL.
  //
  primus.on('outgoing::open', function opening() {
    primus.emit('outgoing::end');

    primus.socket = socket = new Factory(
      primus.uri({ protocol: 'http' }),
      null,
      primus.merge(primus.transport, {
      info: {
        websocket: !primus.AVOID_WEBSOCKETS,  // Prevent WebSocket crashes
        cookie_needed: true                   // Disables xdomainrequest bugs
      }
    }));

    //
    // Setup the Event handlers.
    //
    socket.onopen = primus.emits('open');
    socket.onerror = primus.emits('error');
    socket.onclose = function (e) {
      //
      // The timeout replicates the behaviour of primus.emits so we're not
      // affected by any timing bugs.
      //
      setTimeout(function timeout() {
        if (e && e.code > 1000) primus.emit('incoming::error', e);
        primus.emit('incoming::end');
      }, 0);
    };
    socket.onmessage = primus.emits('data', function parse(evt) {
      return evt.data;
    });
  });

  //
  // We need to write a new message to the socket.
  //
  primus.on('outgoing::data', function write(message) {
    if (socket) socket.send(message);
  });

  //
  // Attempt to reconnect the socket. It assumes that the `outgoing::end` event is
  // called if it failed to disconnect.
  //
  primus.on('outgoing::reconnect', function reconnect() {
    primus.emit('outgoing::end');
    primus.emit('outgoing::open');
  });

  //
  // We need to close the socket.
  //
  primus.on('outgoing::end', function close() {
    if (socket) {
      socket.onerror = socket.onopen = socket.onclose = socket.onmessage = function () {};
      socket.close();
      socket = null;
    }
  });
};
Primus.prototype.authorization = false;
Primus.prototype.pathname = "/primus";
Primus.prototype.encoder = function encoder(data, fn) {
  var err;

  try { data = JSON.stringify(data); }
  catch (e) { err = e; }

  fn(err, data);
};
Primus.prototype.decoder = function decoder(data, fn) {
  var err;

  if ('string' !== typeof data) return fn(err, data);

  try { data = JSON.parse(data); }
  catch (e) { err = e; }

  fn(err, data);
};
Primus.prototype.version = "2.4.6";

//
// Hack 1: \u2028 and \u2029 are allowed inside string in JSON. But JavaScript
// defines them as newline separators. Because no literal newlines are allowed
// in a string this causes a ParseError. We work around this issue by replacing
// these characters with a properly escaped version for those chars. This can
// cause errors with JSONP requests or if the string is just evaluated.
//
// This could have been solved by replacing the data during the "outgoing::data"
// event. But as it affects the JSON encoding in general I've opted for a global
// patch instead so all JSON.stringify operations are save.
//
if (
    'object' === typeof JSON
 && 'function' === typeof JSON.stringify
 && JSON.stringify(['\u2028\u2029']) === '["\u2028\u2029"]'
) {
  JSON.stringify = function replace(stringify) {
    var u2028 = /\u2028/g
      , u2029 = /\u2029/g;

    return function patched(value, replacer, spaces) {
      var result = stringify.call(this, value, replacer, spaces);

      //
      // Replace the bad chars.
      //
      if (result) {
        if (~result.indexOf('\u2028')) result = result.replace(u2028, '\\u2028');
        if (~result.indexOf('\u2029')) result = result.replace(u2029, '\\u2029');
      }

      return result;
    };
  }(JSON.stringify);
}

if (
     'undefined' !== typeof document
  && 'undefined' !== typeof navigator
) {
  //
  // Hack 2: If you press ESC in FireFox it will close all active connections.
  // Normally this makes sense, when your page is still loading. But versions
  // before FireFox 22 will close all connections including WebSocket connections
  // after page load. One way to prevent this is to do a `preventDefault()` and
  // cancel the operation before it bubbles up to the browsers default handler.
  // It needs to be added as `keydown` event, if it's added keyup it will not be
  // able to prevent the connection from being closed.
  //
  if (document.addEventListener) {
    document.addEventListener('keydown', function keydown(e) {
      if (e.keyCode !== 27 || !e.preventDefault) return;

      e.preventDefault();
    }, false);
  }

  //
  // Hack 3: This is a Mac/Apple bug only, when you're behind a reverse proxy or
  // have you network settings set to `automatic proxy discovery` the safari
  // browser will crash when the WebSocket constructor is initialised. There is
  // no way to detect the usage of these proxies available in JavaScript so we
  // need to do some nasty browser sniffing. This only affects Safari versions
  // lower then 5.1.4
  //
  var ua = (navigator.userAgent || '').toLowerCase()
    , parsed = ua.match(/.+(?:rv|it|ra|ie)[\/: ](\d+)\.(\d+)(?:\.(\d+))?/) || []
    , version = +[parsed[1], parsed[2]].join('.');

  if (
       !~ua.indexOf('chrome')
    && ~ua.indexOf('safari')
    && version < 534.54
  ) {
    Primus.prototype.AVOID_WEBSOCKETS = true;
  }
}
Primus.prototype.ark["emitter"] = function (){};
 return Primus; });(function PrimusLibraryWrap(Primus) {/* SockJS client, version 0.3.4, http://sockjs.org, MIT License

Copyright (c) 2011-2012 VMware, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

// JSON2 by Douglas Crockford (minified).
var JSON;JSON||(JSON={}),function(){function str(a,b){var c,d,e,f,g=gap,h,i=b[a];i&&typeof i=="object"&&typeof i.toJSON=="function"&&(i=i.toJSON(a)),typeof rep=="function"&&(i=rep.call(b,a,i));switch(typeof i){case"string":return quote(i);case"number":return isFinite(i)?String(i):"null";case"boolean":case"null":return String(i);case"object":if(!i)return"null";gap+=indent,h=[];if(Object.prototype.toString.apply(i)==="[object Array]"){f=i.length;for(c=0;c<f;c+=1)h[c]=str(c,i)||"null";e=h.length===0?"[]":gap?"[\n"+gap+h.join(",\n"+gap)+"\n"+g+"]":"["+h.join(",")+"]",gap=g;return e}if(rep&&typeof rep=="object"){f=rep.length;for(c=0;c<f;c+=1)typeof rep[c]=="string"&&(d=rep[c],e=str(d,i),e&&h.push(quote(d)+(gap?": ":":")+e))}else for(d in i)Object.prototype.hasOwnProperty.call(i,d)&&(e=str(d,i),e&&h.push(quote(d)+(gap?": ":":")+e));e=h.length===0?"{}":gap?"{\n"+gap+h.join(",\n"+gap)+"\n"+g+"}":"{"+h.join(",")+"}",gap=g;return e}}function quote(a){escapable.lastIndex=0;return escapable.test(a)?'"'+a.replace(escapable,function(a){var b=meta[a];return typeof b=="string"?b:"\\u"+("0000"+a.charCodeAt(0).toString(16)).slice(-4)})+'"':'"'+a+'"'}function f(a){return a<10?"0"+a:a}"use strict",typeof Date.prototype.toJSON!="function"&&(Date.prototype.toJSON=function(a){return isFinite(this.valueOf())?this.getUTCFullYear()+"-"+f(this.getUTCMonth()+1)+"-"+f(this.getUTCDate())+"T"+f(this.getUTCHours())+":"+f(this.getUTCMinutes())+":"+f(this.getUTCSeconds())+"Z":null},String.prototype.toJSON=Number.prototype.toJSON=Boolean.prototype.toJSON=function(a){return this.valueOf()});var cx=/[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,escapable=/[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,gap,indent,meta={"\b":"\\b","\t":"\\t","\n":"\\n","\f":"\\f","\r":"\\r",'"':'\\"',"\\":"\\\\"},rep;typeof JSON.stringify!="function"&&(JSON.stringify=function(a,b,c){var d;gap="",indent="";if(typeof c=="number")for(d=0;d<c;d+=1)indent+=" ";else typeof c=="string"&&(indent=c);rep=b;if(!b||typeof b=="function"||typeof b=="object"&&typeof b.length=="number")return str("",{"":a});throw new Error("JSON.stringify")}),typeof JSON.parse!="function"&&(JSON.parse=function(text,reviver){function walk(a,b){var c,d,e=a[b];if(e&&typeof e=="object")for(c in e)Object.prototype.hasOwnProperty.call(e,c)&&(d=walk(e,c),d!==undefined?e[c]=d:delete e[c]);return reviver.call(a,b,e)}var j;text=String(text),cx.lastIndex=0,cx.test(text)&&(text=text.replace(cx,function(a){return"\\u"+("0000"+a.charCodeAt(0).toString(16)).slice(-4)}));if(/^[\],:{}\s]*$/.test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,"@").replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,"]").replace(/(?:^|:|,)(?:\s*\[)+/g,""))){j=eval("("+text+")");return typeof reviver=="function"?walk({"":j},""):j}throw new SyntaxError("JSON.parse")})}()


//     [*] Including lib/index.js
// Public object
SockJS = (function(){
              var _document = document;
              var _window = window;
              var utils = {};


//         [*] Including lib/reventtarget.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

/* Simplified implementation of DOM2 EventTarget.
 *   http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget
 */
var REventTarget = function() {};
REventTarget.prototype.addEventListener = function (eventType, listener) {
    if(!this._listeners) {
         this._listeners = {};
    }
    if(!(eventType in this._listeners)) {
        this._listeners[eventType] = [];
    }
    var arr = this._listeners[eventType];
    if(utils.arrIndexOf(arr, listener) === -1) {
        arr.push(listener);
    }
    return;
};

REventTarget.prototype.removeEventListener = function (eventType, listener) {
    if(!(this._listeners && (eventType in this._listeners))) {
        return;
    }
    var arr = this._listeners[eventType];
    var idx = utils.arrIndexOf(arr, listener);
    if (idx !== -1) {
        if(arr.length > 1) {
            this._listeners[eventType] = arr.slice(0, idx).concat( arr.slice(idx+1) );
        } else {
            delete this._listeners[eventType];
        }
        return;
    }
    return;
};

REventTarget.prototype.dispatchEvent = function (event) {
    var t = event.type;
    var args = Array.prototype.slice.call(arguments, 0);
    if (this['on'+t]) {
        this['on'+t].apply(this, args);
    }
    if (this._listeners && t in this._listeners) {
        for(var i=0; i < this._listeners[t].length; i++) {
            this._listeners[t][i].apply(this, args);
        }
    }
};
//         [*] End of lib/reventtarget.js


//         [*] Including lib/simpleevent.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var SimpleEvent = function(type, obj) {
    this.type = type;
    if (typeof obj !== 'undefined') {
        for(var k in obj) {
            if (!obj.hasOwnProperty(k)) continue;
            this[k] = obj[k];
        }
    }
};

SimpleEvent.prototype.toString = function() {
    var r = [];
    for(var k in this) {
        if (!this.hasOwnProperty(k)) continue;
        var v = this[k];
        if (typeof v === 'function') v = '[function]';
        r.push(k + '=' + v);
    }
    return 'SimpleEvent(' + r.join(', ') + ')';
};
//         [*] End of lib/simpleevent.js


//         [*] Including lib/eventemitter.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var EventEmitter = function(events) {
    var that = this;
    that._events = events || [];
    that._listeners = {};
};
EventEmitter.prototype.emit = function(type) {
    var that = this;
    that._verifyType(type);
    if (that._nuked) return;

    var args = Array.prototype.slice.call(arguments, 1);
    if (that['on'+type]) {
        that['on'+type].apply(that, args);
    }
    if (type in that._listeners) {
        for(var i = 0; i < that._listeners[type].length; i++) {
            that._listeners[type][i].apply(that, args);
        }
    }
};

EventEmitter.prototype.on = function(type, callback) {
    var that = this;
    that._verifyType(type);
    if (that._nuked) return;

    if (!(type in that._listeners)) {
        that._listeners[type] = [];
    }
    that._listeners[type].push(callback);
};

EventEmitter.prototype._verifyType = function(type) {
    var that = this;
    if (utils.arrIndexOf(that._events, type) === -1) {
        utils.log('Event ' + JSON.stringify(type) +
                  ' not listed ' + JSON.stringify(that._events) +
                  ' in ' + that);
    }
};

EventEmitter.prototype.nuke = function() {
    var that = this;
    that._nuked = true;
    for(var i=0; i<that._events.length; i++) {
        delete that[that._events[i]];
    }
    that._listeners = {};
};
//         [*] End of lib/eventemitter.js


//         [*] Including lib/utils.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var random_string_chars = 'abcdefghijklmnopqrstuvwxyz0123456789_';
utils.random_string = function(length, max) {
    max = max || random_string_chars.length;
    var i, ret = [];
    for(i=0; i < length; i++) {
        ret.push( random_string_chars.substr(Math.floor(Math.random() * max),1) );
    }
    return ret.join('');
};
utils.random_number = function(max) {
    return Math.floor(Math.random() * max);
};
utils.random_number_string = function(max) {
    var t = (''+(max - 1)).length;
    var p = Array(t+1).join('0');
    return (p + utils.random_number(max)).slice(-t);
};

utils.getOrigin = function(url) {
    if (url.match(/^file:\/\//)) {
        // no origin when using file protocol
        return null;
    }

    var parts = url.split('/');
    var protocol = parts[0];
    var host = parts[2];
    var atSignIndex = host.lastIndexOf('@');
    var hostname;
    var port;

    if (~atSignIndex) host = host.slice(atSignIndex + 1);

    parts = host.split(':');
    hostname = parts[0];
    port = parts[1];

    if (!port) port = (protocol === 'https:') ? 443 : 80;

    return protocol + '//' + hostname + ':' + port;
};

utils.isSameOriginUrl = function(url_a, url_b) {
    // location.origin would do, but it's not always available.
    if (!url_b) url_b = _window.location.href;
    return utils.getOrigin(url_a) === utils.getOrigin(url_b);
};

utils.getParentDomain = function(url) {
    // ipv4 ip address
    if (/^[0-9.]*$/.test(url)) return url;
    // ipv6 ip address
    if (/^\[/.test(url)) return url;
    // no dots
    if (!(/[.]/.test(url))) return url;

    var parts = url.split('.').slice(1);
    return parts.join('.');
};

utils.objectExtend = function(dst, src) {
    for(var k in src) {
        if (src.hasOwnProperty(k)) {
            dst[k] = src[k];
        }
    }
    return dst;
};

var WPrefix = '_jp';

utils.polluteGlobalNamespace = function() {
    if (!(WPrefix in _window)) {
        _window[WPrefix] = {};
    }
};

utils.closeFrame = function (code, reason) {
    return 'c'+JSON.stringify([code, reason]);
};

utils.userSetCode = function (code) {
    return code === 1000 || (code >= 3000 && code <= 4999);
};

// See: http://www.erg.abdn.ac.uk/~gerrit/dccp/notes/ccid2/rto_estimator/
// and RFC 2988.
utils.countRTO = function (rtt) {
    // In a local environment, when using IE8/9 and the `jsonp-polling`
    // transport the time needed to establish a connection (the time that pass
    // from the opening of the transport to the call of `_dispatchOpen`) is
    // around 200ms (the lower bound used in the official client) and this
    // causes spurious timeouts. For this reason we calculate a value slightly
    // larger than that used in official client.
    if (rtt > 100) return 4 * rtt; // rto > 400ms
    return 300 + rtt;              // 300ms < rto <= 400ms
}

utils.log = function() {
    if (_window.console && console.log && console.log.apply) {
        console.log.apply(console, arguments);
    }
};

utils.bind = function(fun, that) {
    if (fun.bind) {
        return fun.bind(that);
    } else {
        return function() {
            return fun.apply(that, arguments);
        };
    }
};

utils.flatUrl = function(url) {
    return url.indexOf('?') === -1 && url.indexOf('#') === -1;
};

utils.amendUrl = function(url) {
    var dl = _document.location;
    if (!url) {
        throw new Error('Wrong url for SockJS');
    }
    if (!utils.flatUrl(url)) {
        throw new Error('Only basic urls are supported in SockJS');
    }

    //  '//abc' --> 'http://abc'
    if (url.indexOf('//') === 0) {
        url = dl.protocol + url;
    }
    // '/abc' --> 'http://localhost:80/abc'
    if (url.indexOf('/') === 0) {
        url = dl.protocol + '//' + dl.host + url;
    }
    // strip trailing slashes
    url = url.replace(/[/]+$/,'');
    return url;
};

// IE doesn't support [].indexOf.
utils.arrIndexOf = function(arr, obj){
    for(var i=0; i < arr.length; i++){
        if(arr[i] === obj){
            return i;
        }
    }
    return -1;
};

utils.arrSkip = function(arr, obj) {
    var idx = utils.arrIndexOf(arr, obj);
    if (idx === -1) {
        return arr.slice();
    } else {
        var dst = arr.slice(0, idx);
        return dst.concat(arr.slice(idx+1));
    }
};

// Via: https://gist.github.com/1133122/2121c601c5549155483f50be3da5305e83b8c5df
utils.isArray = Array.isArray || function(value) {
    return {}.toString.call(value).indexOf('Array') >= 0
};

utils.delay = function(t, fun) {
    if(typeof t === 'function') {
        fun = t;
        t = 0;
    }
    return setTimeout(fun, t);
};


// Chars worth escaping, as defined by Douglas Crockford:
//   https://github.com/douglascrockford/JSON-js/blob/47a9882cddeb1e8529e07af9736218075372b8ac/json2.js#L196
var json_escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
    json_lookup = {
"\u0000":"\\u0000","\u0001":"\\u0001","\u0002":"\\u0002","\u0003":"\\u0003",
"\u0004":"\\u0004","\u0005":"\\u0005","\u0006":"\\u0006","\u0007":"\\u0007",
"\b":"\\b","\t":"\\t","\n":"\\n","\u000b":"\\u000b","\f":"\\f","\r":"\\r",
"\u000e":"\\u000e","\u000f":"\\u000f","\u0010":"\\u0010","\u0011":"\\u0011",
"\u0012":"\\u0012","\u0013":"\\u0013","\u0014":"\\u0014","\u0015":"\\u0015",
"\u0016":"\\u0016","\u0017":"\\u0017","\u0018":"\\u0018","\u0019":"\\u0019",
"\u001a":"\\u001a","\u001b":"\\u001b","\u001c":"\\u001c","\u001d":"\\u001d",
"\u001e":"\\u001e","\u001f":"\\u001f","\"":"\\\"","\\":"\\\\",
"\u007f":"\\u007f","\u0080":"\\u0080","\u0081":"\\u0081","\u0082":"\\u0082",
"\u0083":"\\u0083","\u0084":"\\u0084","\u0085":"\\u0085","\u0086":"\\u0086",
"\u0087":"\\u0087","\u0088":"\\u0088","\u0089":"\\u0089","\u008a":"\\u008a",
"\u008b":"\\u008b","\u008c":"\\u008c","\u008d":"\\u008d","\u008e":"\\u008e",
"\u008f":"\\u008f","\u0090":"\\u0090","\u0091":"\\u0091","\u0092":"\\u0092",
"\u0093":"\\u0093","\u0094":"\\u0094","\u0095":"\\u0095","\u0096":"\\u0096",
"\u0097":"\\u0097","\u0098":"\\u0098","\u0099":"\\u0099","\u009a":"\\u009a",
"\u009b":"\\u009b","\u009c":"\\u009c","\u009d":"\\u009d","\u009e":"\\u009e",
"\u009f":"\\u009f","\u00ad":"\\u00ad","\u0600":"\\u0600","\u0601":"\\u0601",
"\u0602":"\\u0602","\u0603":"\\u0603","\u0604":"\\u0604","\u070f":"\\u070f",
"\u17b4":"\\u17b4","\u17b5":"\\u17b5","\u200c":"\\u200c","\u200d":"\\u200d",
"\u200e":"\\u200e","\u200f":"\\u200f","\u2028":"\\u2028","\u2029":"\\u2029",
"\u202a":"\\u202a","\u202b":"\\u202b","\u202c":"\\u202c","\u202d":"\\u202d",
"\u202e":"\\u202e","\u202f":"\\u202f","\u2060":"\\u2060","\u2061":"\\u2061",
"\u2062":"\\u2062","\u2063":"\\u2063","\u2064":"\\u2064","\u2065":"\\u2065",
"\u2066":"\\u2066","\u2067":"\\u2067","\u2068":"\\u2068","\u2069":"\\u2069",
"\u206a":"\\u206a","\u206b":"\\u206b","\u206c":"\\u206c","\u206d":"\\u206d",
"\u206e":"\\u206e","\u206f":"\\u206f","\ufeff":"\\ufeff","\ufff0":"\\ufff0",
"\ufff1":"\\ufff1","\ufff2":"\\ufff2","\ufff3":"\\ufff3","\ufff4":"\\ufff4",
"\ufff5":"\\ufff5","\ufff6":"\\ufff6","\ufff7":"\\ufff7","\ufff8":"\\ufff8",
"\ufff9":"\\ufff9","\ufffa":"\\ufffa","\ufffb":"\\ufffb","\ufffc":"\\ufffc",
"\ufffd":"\\ufffd","\ufffe":"\\ufffe","\uffff":"\\uffff"};

// Some extra characters that Chrome gets wrong, and substitutes with
// something else on the wire.
var extra_escapable = /[\x00-\x1f\ud800-\udfff\ufffe\uffff\u0300-\u0333\u033d-\u0346\u034a-\u034c\u0350-\u0352\u0357-\u0358\u035c-\u0362\u0374\u037e\u0387\u0591-\u05af\u05c4\u0610-\u0617\u0653-\u0654\u0657-\u065b\u065d-\u065e\u06df-\u06e2\u06eb-\u06ec\u0730\u0732-\u0733\u0735-\u0736\u073a\u073d\u073f-\u0741\u0743\u0745\u0747\u07eb-\u07f1\u0951\u0958-\u095f\u09dc-\u09dd\u09df\u0a33\u0a36\u0a59-\u0a5b\u0a5e\u0b5c-\u0b5d\u0e38-\u0e39\u0f43\u0f4d\u0f52\u0f57\u0f5c\u0f69\u0f72-\u0f76\u0f78\u0f80-\u0f83\u0f93\u0f9d\u0fa2\u0fa7\u0fac\u0fb9\u1939-\u193a\u1a17\u1b6b\u1cda-\u1cdb\u1dc0-\u1dcf\u1dfc\u1dfe\u1f71\u1f73\u1f75\u1f77\u1f79\u1f7b\u1f7d\u1fbb\u1fbe\u1fc9\u1fcb\u1fd3\u1fdb\u1fe3\u1feb\u1fee-\u1fef\u1ff9\u1ffb\u1ffd\u2000-\u2001\u20d0-\u20d1\u20d4-\u20d7\u20e7-\u20e9\u2126\u212a-\u212b\u2329-\u232a\u2adc\u302b-\u302c\uaab2-\uaab3\uf900-\ufa0d\ufa10\ufa12\ufa15-\ufa1e\ufa20\ufa22\ufa25-\ufa26\ufa2a-\ufa2d\ufa30-\ufa6d\ufa70-\ufad9\ufb1d\ufb1f\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40-\ufb41\ufb43-\ufb44\ufb46-\ufb4e\ufff0-\uffff]/g,
    extra_lookup;

// JSON Quote string. Use native implementation when possible.
var JSONQuote = (JSON && JSON.stringify) || function(string) {
    json_escapable.lastIndex = 0;
    if (json_escapable.test(string)) {
        string = string.replace(json_escapable, function(a) {
            return json_lookup[a];
        });
    }
    return '"' + string + '"';
};

// This may be quite slow, so let's delay until user actually uses bad
// characters.
var unroll_lookup = function(escapable) {
    var i;
    var unrolled = {}
    var c = []
    for(i=0; i<65536; i++) {
        c.push( String.fromCharCode(i) );
    }
    escapable.lastIndex = 0;
    c.join('').replace(escapable, function (a) {
        unrolled[ a ] = '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
        return '';
    });
    escapable.lastIndex = 0;
    return unrolled;
};

// Quote string, also taking care of unicode characters that browsers
// often break. Especially, take care of unicode surrogates:
//    http://en.wikipedia.org/wiki/Mapping_of_Unicode_characters#Surrogates
utils.quote = function(string) {
    var quoted = JSONQuote(string);

    // In most cases this should be very fast and good enough.
    extra_escapable.lastIndex = 0;
    if(!extra_escapable.test(quoted)) {
        return quoted;
    }

    if(!extra_lookup) extra_lookup = unroll_lookup(extra_escapable);

    return quoted.replace(extra_escapable, function(a) {
        return extra_lookup[a];
    });
}

var _all_protocols = ['websocket',
                      'xdr-streaming',
                      'xhr-streaming',
                      'iframe-eventsource',
                      'iframe-htmlfile',
                      'xdr-polling',
                      'xhr-polling',
                      'iframe-xhr-polling',
                      'jsonp-polling'];

utils.probeProtocols = function() {
    var probed = {};
    for(var i=0; i<_all_protocols.length; i++) {
        var protocol = _all_protocols[i];
        // User can have a typo in protocol name.
        probed[protocol] = SockJS[protocol] &&
                           SockJS[protocol].enabled();
    }
    return probed;
};

utils.detectProtocols = function(probed, protocols_whitelist, info) {
    var pe = {},
        protocols = [];
    if (!protocols_whitelist) protocols_whitelist = _all_protocols;
    for(var i=0; i<protocols_whitelist.length; i++) {
        var protocol = protocols_whitelist[i];
        pe[protocol] = probed[protocol];
    }
    var maybe_push = function(protos) {
        var proto = protos.shift();
        if (pe[proto]) {
            protocols.push(proto);
        } else {
            if (protos.length > 0) {
                maybe_push(protos);
            }
        }
    }

    // 1. Websocket
    if (info.websocket !== false) {
        maybe_push(['websocket']);
    }

    // 2. Streaming
    if (pe['xhr-streaming'] && !info.null_origin) {
        protocols.push('xhr-streaming');
    } else {
        if (pe['xdr-streaming'] && !info.cookie_needed && !info.null_origin) {
            protocols.push('xdr-streaming');
        } else {
            maybe_push(['iframe-eventsource',
                        'iframe-htmlfile']);
        }
    }

    // 3. Polling
    if (pe['xhr-polling'] && !info.null_origin) {
        protocols.push('xhr-polling');
    } else {
        if (pe['xdr-polling'] && !info.cookie_needed && !info.null_origin) {
            protocols.push('xdr-polling');
        } else {
            maybe_push(['iframe-xhr-polling',
                        'jsonp-polling']);
        }
    }
    return protocols;
}
//         [*] End of lib/utils.js


//         [*] Including lib/dom.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

// May be used by htmlfile jsonp and transports.
var MPrefix = '_sockjs_global';
utils.createHook = function() {
    var window_id = 'a' + utils.random_string(8);
    if (!(MPrefix in _window)) {
        var map = {};
        _window[MPrefix] = function(window_id) {
            if (!(window_id in map)) {
                map[window_id] = {
                    id: window_id,
                    del: function() {delete map[window_id];}
                };
            }
            return map[window_id];
        }
    }
    return _window[MPrefix](window_id);
};



utils.attachMessage = function(listener) {
    utils.attachEvent('message', listener);
};
utils.attachEvent = function(event, listener) {
    if (typeof _window.addEventListener !== 'undefined') {
        _window.addEventListener(event, listener, false);
    } else {
        // IE quirks.
        // According to: http://stevesouders.com/misc/test-postmessage.php
        // the message gets delivered only to 'document', not 'window'.
        _document.attachEvent("on" + event, listener);
        // I get 'window' for ie8.
        _window.attachEvent("on" + event, listener);
    }
};

utils.detachMessage = function(listener) {
    utils.detachEvent('message', listener);
};
utils.detachEvent = function(event, listener) {
    if (typeof _window.addEventListener !== 'undefined') {
        _window.removeEventListener(event, listener, false);
    } else {
        _document.detachEvent("on" + event, listener);
        _window.detachEvent("on" + event, listener);
    }
};


var on_unload = {};
// Things registered after beforeunload are to be called immediately.
var after_unload = false;

var trigger_unload_callbacks = function() {
    for(var ref in on_unload) {
        on_unload[ref]();
        delete on_unload[ref];
    };
};

var unload_triggered = function() {
    if(after_unload) return;
    after_unload = true;
    trigger_unload_callbacks();
};

// 'unload' alone is not reliable in opera within an iframe, but we
// can't use `beforeunload` as IE fires it on javascript: links.
utils.attachEvent('unload', unload_triggered);

utils.unload_add = function(listener) {
    var ref = utils.random_string(8);
    on_unload[ref] = listener;
    if (after_unload) {
        utils.delay(trigger_unload_callbacks);
    }
    return ref;
};
utils.unload_del = function(ref) {
    if (ref in on_unload)
        delete on_unload[ref];
};


utils.createIframe = function (iframe_url, error_callback) {
    var iframe = _document.createElement('iframe');
    var tref, unload_ref;
    var unattach = function() {
        clearTimeout(tref);
        // Explorer had problems with that.
        try {iframe.onload = null;} catch (x) {}
        iframe.onerror = null;
    };
    var cleanup = function() {
        if (iframe) {
            unattach();
            // This timeout makes chrome fire onbeforeunload event
            // within iframe. Without the timeout it goes straight to
            // onunload.
            setTimeout(function() {
                if(iframe) {
                    iframe.parentNode.removeChild(iframe);
                }
                iframe = null;
            }, 0);
            utils.unload_del(unload_ref);
        }
    };
    var onerror = function(r) {
        if (iframe) {
            cleanup();
            error_callback(r);
        }
    };
    var post = function(msg, origin) {
        try {
            // When the iframe is not loaded, IE raises an exception
            // on 'contentWindow'.
            if (iframe && iframe.contentWindow) {
                iframe.contentWindow.postMessage(msg, origin);
            }
        } catch (x) {};
    };

    iframe.src = iframe_url;
    iframe.style.display = 'none';
    iframe.style.position = 'absolute';
    iframe.onerror = function(){onerror('onerror');};
    iframe.onload = function() {
        // `onload` is triggered before scripts on the iframe are
        // executed. Give it few seconds to actually load stuff.
        clearTimeout(tref);
        tref = setTimeout(function(){onerror('onload timeout');}, 2000);
    };
    _document.body.appendChild(iframe);
    tref = setTimeout(function(){onerror('timeout');}, 15000);
    unload_ref = utils.unload_add(cleanup);
    return {
        post: post,
        cleanup: cleanup,
        loaded: unattach
    };
};

utils.createHtmlfile = function (iframe_url, error_callback) {
    var doc = new ActiveXObject('htmlfile');
    var tref, unload_ref;
    var iframe;
    var unattach = function() {
        clearTimeout(tref);
    };
    var cleanup = function() {
        if (doc) {
            unattach();
            utils.unload_del(unload_ref);
            iframe.parentNode.removeChild(iframe);
            iframe = doc = null;
            CollectGarbage();
        }
    };
    var onerror = function(r)  {
        if (doc) {
            cleanup();
            error_callback(r);
        }
    };
    var post = function(msg, origin) {
        try {
            // When the iframe is not loaded, IE raises an exception
            // on 'contentWindow'.
            if (iframe && iframe.contentWindow) {
                iframe.contentWindow.postMessage(msg, origin);
            }
        } catch (x) {};
    };

    doc.open();
    doc.write('<html><s' + 'cript>' +
              'document.domain="' + document.domain + '";' +
              '</s' + 'cript></html>');
    doc.close();
    doc.parentWindow[WPrefix] = _window[WPrefix];
    var c = doc.createElement('div');
    doc.body.appendChild(c);
    iframe = doc.createElement('iframe');
    c.appendChild(iframe);
    iframe.src = iframe_url;
    tref = setTimeout(function(){onerror('timeout');}, 15000);
    unload_ref = utils.unload_add(cleanup);
    return {
        post: post,
        cleanup: cleanup,
        loaded: unattach
    };
};
//         [*] End of lib/dom.js


//         [*] Including lib/dom2.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var AbstractXHRObject = function(){};
AbstractXHRObject.prototype = new EventEmitter(['chunk', 'finish']);

AbstractXHRObject.prototype._start = function(method, url, payload, opts) {
    var that = this;

    try {
        that.xhr = new XMLHttpRequest();
    } catch(x) {};

    if (!that.xhr) {
        try {
            that.xhr = new _window.ActiveXObject('Microsoft.XMLHTTP');
        } catch(x) {};
    }
    if (_window.ActiveXObject || _window.XDomainRequest) {
        // IE8 caches even POSTs
        url += ((url.indexOf('?') === -1) ? '?' : '&') + 't='+(+new Date);
    }

    // Explorer tends to keep connection open, even after the
    // tab gets closed: http://bugs.jquery.com/ticket/5280
    that.unload_ref = utils.unload_add(function(){that._cleanup(true);});
    try {
        that.xhr.open(method, url, true);
    } catch(e) {
        // IE raises an exception on wrong port.
        that.emit('finish', 0, '');
        that._cleanup();
        return;
    };

    if (!opts || !opts.no_credentials) {
        // Mozilla docs says https://developer.mozilla.org/en/XMLHttpRequest :
        // "This never affects same-site requests."
        that.xhr.withCredentials = 'true';
    }
    if (opts && opts.headers) {
        for(var key in opts.headers) {
            that.xhr.setRequestHeader(key, opts.headers[key]);
        }
    }

    that.xhr.onreadystatechange = function() {
        if (that.xhr) {
            var x = that.xhr;
            switch (x.readyState) {
            case 3:
                // IE doesn't like peeking into responseText or status
                // on Microsoft.XMLHTTP and readystate=3
                try {
                    var status = x.status;
                    var text = x.responseText;
                } catch (x) {};
                // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
                if (status === 1223) status = 204;

                // IE does return readystate == 3 for 404 answers.
                if (text && text.length > 0) {
                    that.emit('chunk', status, text);
                }
                break;
            case 4:
                var status = x.status;
                // IE returns 1223 for 204: http://bugs.jquery.com/ticket/1450
                if (status === 1223) status = 204;

                that.emit('finish', status, x.responseText);
                that._cleanup(false);
                break;
            }
        }
    };
    that.xhr.send(payload);
};

AbstractXHRObject.prototype._cleanup = function(abort) {
    var that = this;
    if (!that.xhr) return;
    utils.unload_del(that.unload_ref);

    // IE needs this field to be a function
    that.xhr.onreadystatechange = function(){};

    if (abort) {
        try {
            that.xhr.abort();
        } catch(x) {};
    }
    that.unload_ref = that.xhr = null;
};

AbstractXHRObject.prototype.close = function() {
    var that = this;
    that.nuke();
    that._cleanup(true);
};

var XHRCorsObject = utils.XHRCorsObject = function() {
    var that = this, args = arguments;
    utils.delay(function(){that._start.apply(that, args);});
};
XHRCorsObject.prototype = new AbstractXHRObject();

var XHRLocalObject = utils.XHRLocalObject = function(method, url, payload) {
    var that = this;
    utils.delay(function(){
        that._start(method, url, payload);
    });
};
XHRLocalObject.prototype = new AbstractXHRObject();



// References:
//   http://ajaxian.com/archives/100-line-ajax-wrapper
//   http://msdn.microsoft.com/en-us/library/cc288060(v=VS.85).aspx
var XDRObject = utils.XDRObject = function(method, url, payload) {
    var that = this;
    utils.delay(function(){that._start(method, url, payload);});
};
XDRObject.prototype = new EventEmitter(['chunk', 'finish']);
XDRObject.prototype._start = function(method, url, payload) {
    var that = this;
    var xdr = new XDomainRequest();
    // IE caches even POSTs
    url += ((url.indexOf('?') === -1) ? '?' : '&') + 't='+(+new Date);

    var onerror = xdr.ontimeout = xdr.onerror = function() {
        that.emit('finish', 0, '');
        that._cleanup(false);
    };
    xdr.onprogress = function() {
        that.emit('chunk', 200, xdr.responseText);
    };
    xdr.onload = function() {
        that.emit('finish', 200, xdr.responseText);
        that._cleanup(false);
    };
    that.xdr = xdr;
    that.unload_ref = utils.unload_add(function(){that._cleanup(true);});
    try {
        // Fails with AccessDenied if port number is bogus
        that.xdr.open(method, url);
        that.xdr.send(payload);
    } catch(x) {
        onerror();
    }
};

XDRObject.prototype._cleanup = function(abort) {
    var that = this;
    if (!that.xdr) return;
    utils.unload_del(that.unload_ref);

    that.xdr.ontimeout = that.xdr.onerror = that.xdr.onprogress =
        that.xdr.onload = null;
    if (abort) {
        try {
            that.xdr.abort();
        } catch(x) {};
    }
    that.unload_ref = that.xdr = null;
};

XDRObject.prototype.close = function() {
    var that = this;
    that.nuke();
    that._cleanup(true);
};

// 1. Is natively via XHR
// 2. Is natively via XDR
// 3. Nope, but postMessage is there so it should work via the Iframe.
// 4. Nope, sorry.
utils.isXHRCorsCapable = function() {
    // CORS doesn't work if page is served from file://
    if (_document.domain) {
      if (_window.XMLHttpRequest && 'withCredentials' in new XMLHttpRequest()) {
          return 1;
      }
      if (_window.XDomainRequest) {
          return 2;
      }
    }
    if (IframeTransport.enabled()) {
        return 3;
    }
    return 4;
};
//         [*] End of lib/dom2.js


//         [*] Including lib/sockjs.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var SockJS = function(url, dep_protocols_whitelist, options) {
    if (this === _window) {
        // makes `new` optional
        return new SockJS(url, dep_protocols_whitelist, options);
    }

    var that = this, protocols_whitelist;
    that._options = {devel: false, debug: false, protocols_whitelist: [],
                     info: undefined, rtt: undefined};
    if (options) {
        utils.objectExtend(that._options, options);
    }
    that._base_url = utils.amendUrl(url);
    that._server = that._options.server || utils.random_number_string(1000);
    if (that._options.protocols_whitelist &&
        that._options.protocols_whitelist.length) {
        protocols_whitelist = that._options.protocols_whitelist;
    } else {
        // Deprecated API
        if (typeof dep_protocols_whitelist === 'string' &&
            dep_protocols_whitelist.length > 0) {
            protocols_whitelist = [dep_protocols_whitelist];
        } else if (utils.isArray(dep_protocols_whitelist)) {
            protocols_whitelist = dep_protocols_whitelist
        } else {
            protocols_whitelist = null;
        }
        if (protocols_whitelist) {
            that._debug('Deprecated API: Use "protocols_whitelist" option ' +
                        'instead of supplying protocol list as a second ' +
                        'parameter to SockJS constructor.');
        }
    }
    that._protocols = [];
    that.protocol = null;
    that.readyState = SockJS.CONNECTING;
    that._ir = createInfoReceiver(that._base_url);
    that._ir.onfinish = function(info, rtt) {
        that._ir = null;
        if (info) {
            if (that._options.info) {
                // Override if user supplies the option
                info = utils.objectExtend(info, that._options.info);
            }
            if (that._options.rtt) {
                rtt = that._options.rtt;
            }
            that._applyInfo(info, rtt, protocols_whitelist);
            that._didClose();
        } else {
            that._didClose(1002, 'Can\'t connect to server', true);
        }
    };
};
// Inheritance
SockJS.prototype = new REventTarget();

SockJS.version = "0.3.4";

SockJS.CONNECTING = 0;
SockJS.OPEN = 1;
SockJS.CLOSING = 2;
SockJS.CLOSED = 3;

SockJS.prototype._debug = function() {
    if (this._options.debug)
        utils.log.apply(utils, arguments);
};

SockJS.prototype._dispatchOpen = function() {
    var that = this;
    if (that.readyState === SockJS.CONNECTING) {
        if (that._transport_tref) {
            clearTimeout(that._transport_tref);
            that._transport_tref = null;
        }
        that.readyState = SockJS.OPEN;
        that.dispatchEvent(new SimpleEvent("open"));
    } else {
        // The server might have been restarted, and lost track of our
        // connection.
        that._didClose(1006, "Server lost session");
    }
};

SockJS.prototype._dispatchMessage = function(data) {
    var that = this;
    if (that.readyState !== SockJS.OPEN)
            return;
    that.dispatchEvent(new SimpleEvent("message", {data: data}));
};

SockJS.prototype._dispatchHeartbeat = function(data) {
    var that = this;
    if (that.readyState !== SockJS.OPEN)
        return;
    that.dispatchEvent(new SimpleEvent('heartbeat', {}));
};

SockJS.prototype._didClose = function(code, reason, force) {
    var that = this;
    if (that.readyState !== SockJS.CONNECTING &&
        that.readyState !== SockJS.OPEN &&
        that.readyState !== SockJS.CLOSING)
            throw new Error('INVALID_STATE_ERR');
    if (that._ir) {
        that._ir.nuke();
        that._ir = null;
    }

    if (that._transport) {
        that._transport.doCleanup();
        that._transport = null;
    }

    var close_event = new SimpleEvent("close", {
        code: code,
        reason: reason,
        wasClean: utils.userSetCode(code)});

    if (!utils.userSetCode(code) &&
        that.readyState === SockJS.CONNECTING && !force) {
        if (that._try_next_protocol(close_event)) {
            return;
        }
        close_event = new SimpleEvent("close", {code: 2000,
                                                reason: "All transports failed",
                                                wasClean: false,
                                                last_event: close_event});
    }
    that.readyState = SockJS.CLOSED;

    utils.delay(function() {
                   that.dispatchEvent(close_event);
                });
};

SockJS.prototype._didMessage = function(data) {
    var that = this;
    var type = data.slice(0, 1);
    switch(type) {
    case 'o':
        that._dispatchOpen();
        break;
    case 'a':
        var payload = JSON.parse(data.slice(1) || '[]');
        for(var i=0; i < payload.length; i++){
            that._dispatchMessage(payload[i]);
        }
        break;
    case 'm':
        var payload = JSON.parse(data.slice(1) || 'null');
        that._dispatchMessage(payload);
        break;
    case 'c':
        var payload = JSON.parse(data.slice(1) || '[]');
        that._didClose(payload[0], payload[1]);
        break;
    case 'h':
        that._dispatchHeartbeat();
        break;
    }
};

SockJS.prototype._try_next_protocol = function(close_event) {
    var that = this;
    if (that.protocol) {
        that._debug('Closed transport:', that.protocol, ''+close_event);
        that.protocol = null;
    }
    if (that._transport_tref) {
        clearTimeout(that._transport_tref);
        that._transport_tref = null;
    }

    while(1) {
        var protocol = that.protocol = that._protocols.shift();
        if (!protocol) {
            return false;
        }
        // Some protocols require access to `body`, what if were in
        // the `head`?
        if (SockJS[protocol] &&
            SockJS[protocol].need_body === true &&
            (!_document.body ||
             (typeof _document.readyState !== 'undefined'
              && _document.readyState !== 'complete'))) {
            that._protocols.unshift(protocol);
            that.protocol = 'waiting-for-load';
            utils.attachEvent('load', function(){
                that._try_next_protocol();
            });
            return true;
        }

        if (!SockJS[protocol] ||
              !SockJS[protocol].enabled(that._options)) {
            that._debug('Skipping transport:', protocol);
        } else {
            var roundTrips = SockJS[protocol].roundTrips || 1;
            var to = ((that._options.rto || 0) * roundTrips) || 5000;
            that._transport_tref = utils.delay(to, function() {
                if (that.readyState === SockJS.CONNECTING) {
                    // I can't understand how it is possible to run
                    // this timer, when the state is CLOSED, but
                    // apparently in IE everythin is possible.
                    that._didClose(2007, "Transport timeouted");
                }
            });

            var connid = utils.random_string(8);
            var trans_url = that._base_url + '/' + that._server + '/' + connid;
            that._debug('Opening transport:', protocol, ' url:'+trans_url,
                        ' RTO:'+that._options.rto);
            that._transport = new SockJS[protocol](that, trans_url,
                                                   that._base_url);
            return true;
        }
    }
};

SockJS.prototype.close = function(code, reason) {
    var that = this;
    if (code && !utils.userSetCode(code))
        throw new Error("INVALID_ACCESS_ERR");
    if(that.readyState !== SockJS.CONNECTING &&
       that.readyState !== SockJS.OPEN) {
        return false;
    }
    that.readyState = SockJS.CLOSING;
    that._didClose(code || 1000, reason || "Normal closure");
    return true;
};

SockJS.prototype.send = function(data) {
    var that = this;
    if (that.readyState === SockJS.CONNECTING)
        throw new Error('INVALID_STATE_ERR');
    if (that.readyState === SockJS.OPEN) {
        that._transport.doSend(utils.quote('' + data));
    }
    return true;
};

SockJS.prototype._applyInfo = function(info, rtt, protocols_whitelist) {
    var that = this;
    that._options.info = info;
    that._options.rtt = rtt;
    that._options.rto = utils.countRTO(rtt);
    that._options.info.null_origin = !_document.domain;
    var probed = utils.probeProtocols();
    that._protocols = utils.detectProtocols(probed, protocols_whitelist, info);
};
//         [*] End of lib/sockjs.js


//         [*] Including lib/trans-websocket.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var WebSocketTransport = SockJS.websocket = function(ri, trans_url) {
    var that = this;
    var url = trans_url + '/websocket';
    if (url.slice(0, 5) === 'https') {
        url = 'wss' + url.slice(5);
    } else {
        url = 'ws' + url.slice(4);
    }
    that.ri = ri;
    that.url = url;
    var Constructor = _window.WebSocket || _window.MozWebSocket;

    that.ws = new Constructor(that.url);
    that.ws.onmessage = function(e) {
        that.ri._didMessage(e.data);
    };
    that.ws.onerror = function() {
      ri._didMessage(utils.closeFrame(1006, "WebSocket connection broken"));
    };
    // Firefox has an interesting bug. If a websocket connection is
    // created after onunload, it stays alive even when user
    // navigates away from the page. In such situation let's lie -
    // let's not open the ws connection at all. See:
    // https://github.com/sockjs/sockjs-client/issues/28
    // https://bugzilla.mozilla.org/show_bug.cgi?id=696085
    that.unload_ref = utils.unload_add(function(){that.ws.close()});
    that.ws.onclose = function() {
        that.ri._didMessage(utils.closeFrame(1006, "WebSocket connection broken"));
    };
};

WebSocketTransport.prototype.doSend = function(data) {
    this.ws.send('[' + data + ']');
};

WebSocketTransport.prototype.doCleanup = function() {
    var that = this;
    var ws = that.ws;
    if (ws) {
        ws.onmessage = ws.onclose = ws.onerror = null;
        ws.close();
        utils.unload_del(that.unload_ref);
        that.unload_ref = that.ri = that.ws = null;
    }
};

WebSocketTransport.enabled = function() {
    return !!(_window.WebSocket || _window.MozWebSocket);
};

// In theory, ws should require 1 round trip. But in chrome, this is
// not very stable over SSL. Most likely a ws connection requires a
// separate SSL connection, in which case 2 round trips are an
// absolute minumum.
WebSocketTransport.roundTrips = 2;
//         [*] End of lib/trans-websocket.js


//         [*] Including lib/trans-sender.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var BufferedSender = function() {};
BufferedSender.prototype.send_constructor = function(sender) {
    var that = this;
    that.send_buffer = [];
    that.sender = sender;
};
BufferedSender.prototype.doSend = function(message) {
    var that = this;
    that.send_buffer.push(message);
    if (!that.send_stop) {
        that.send_schedule();
    }
};

// For polling transports in a situation when in the message callback,
// new message is being send. If the sending connection was started
// before receiving one, it is possible to saturate the network and
// timeout due to the lack of receiving socket. To avoid that we delay
// sending messages by some small time, in order to let receiving
// connection be started beforehand. This is only a halfmeasure and
// does not fix the big problem, but it does make the tests go more
// stable on slow networks.
BufferedSender.prototype.send_schedule_wait = function() {
    var that = this;
    var tref;
    that.send_stop = function() {
        that.send_stop = null;
        clearTimeout(tref);
    };
    tref = utils.delay(25, function() {
        that.send_stop = null;
        that.send_schedule();
    });
};

BufferedSender.prototype.send_schedule = function() {
    var that = this;
    if (that.send_buffer.length > 0) {
        var payload = '[' + that.send_buffer.join(',') + ']';
        that.send_stop = that.sender(that.trans_url, payload, function(success, abort_reason) {
            that.send_stop = null;
            if (success === false) {
                that.ri._didClose(1006, 'Sending error ' + abort_reason);
            } else {
                that.send_schedule_wait();
            }
        });
        that.send_buffer = [];
    }
};

BufferedSender.prototype.send_destructor = function() {
    var that = this;
    if (that._send_stop) {
        that._send_stop();
    }
    that._send_stop = null;
};

var jsonPGenericSender = function(url, payload, callback) {
    var that = this;

    if (!('_send_form' in that)) {
        var form = that._send_form = _document.createElement('form');
        var area = that._send_area = _document.createElement('textarea');
        area.name = 'd';
        form.style.display = 'none';
        form.style.position = 'absolute';
        form.method = 'POST';
        form.enctype = 'application/x-www-form-urlencoded';
        form.acceptCharset = "UTF-8";
        form.appendChild(area);
        _document.body.appendChild(form);
    }
    var form = that._send_form;
    var area = that._send_area;
    var id = 'a' + utils.random_string(8);
    form.target = id;
    form.action = url + '/jsonp_send?i=' + id;

    var iframe;
    try {
        // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
        iframe = _document.createElement('<iframe name="'+ id +'">');
    } catch(x) {
        iframe = _document.createElement('iframe');
        iframe.name = id;
    }
    iframe.id = id;
    form.appendChild(iframe);
    iframe.style.display = 'none';

    try {
        area.value = payload;
    } catch(e) {
        utils.log('Your browser is seriously broken. Go home! ' + e.message);
    }
    form.submit();

    var completed = function(e) {
        if (!iframe.onerror) return;
        iframe.onreadystatechange = iframe.onerror = iframe.onload = null;
        // Opera mini doesn't like if we GC iframe
        // immediately, thus this timeout.
        utils.delay(500, function() {
                       iframe.parentNode.removeChild(iframe);
                       iframe = null;
                   });
        area.value = '';
        // It is not possible to detect if the iframe succeeded or
        // failed to submit our form.
        callback(true);
    };
    iframe.onerror = iframe.onload = completed;
    iframe.onreadystatechange = function(e) {
        if (iframe.readyState == 'complete') completed();
    };
    return completed;
};

var createAjaxSender = function(AjaxObject) {
    return function(url, payload, callback) {
        var xo = new AjaxObject('POST', url + '/xhr_send', payload);
        xo.onfinish = function(status, text) {
            callback(status === 200 || status === 204,
                     'http status ' + status);
        };
        return function(abort_reason) {
            callback(false, abort_reason);
        };
    };
};
//         [*] End of lib/trans-sender.js


//         [*] Including lib/trans-jsonp-receiver.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

// Parts derived from Socket.io:
//    https://github.com/LearnBoost/socket.io/blob/0.6.17/lib/socket.io/transports/jsonp-polling.js
// and jQuery-JSONP:
//    https://code.google.com/p/jquery-jsonp/source/browse/trunk/core/jquery.jsonp.js
var jsonPGenericReceiver = function(url, callback) {
    var tref;
    var script = _document.createElement('script');
    var script2;  // Opera synchronous load trick.
    var close_script = function(frame) {
        if (script2) {
            script2.parentNode.removeChild(script2);
            script2 = null;
        }
        if (script) {
            clearTimeout(tref);
            // Unfortunately, you can't really abort script loading of
            // the script.
            script.parentNode.removeChild(script);
            script.onreadystatechange = script.onerror =
                script.onload = script.onclick = null;
            script = null;
            callback(frame);
            callback = null;
        }
    };

    // IE9 fires 'error' event after orsc or before, in random order.
    var loaded_okay = false;
    var error_timer = null;

    script.id = 'a' + utils.random_string(8);
    script.src = url;
    script.type = 'text/javascript';
    script.charset = 'UTF-8';
    script.onerror = function(e) {
        if (!error_timer) {
            // Delay firing close_script.
            error_timer = setTimeout(function() {
                if (!loaded_okay) {
                    close_script(utils.closeFrame(
                        1006,
                        "JSONP script loaded abnormally (onerror)"));
                }
            }, 1000);
        }
    };
    script.onload = function(e) {
        close_script(utils.closeFrame(1006, "JSONP script loaded abnormally (onload)"));
    };

    script.onreadystatechange = function(e) {
        if (/loaded|closed/.test(script.readyState)) {
            if (script && script.htmlFor && script.onclick) {
                loaded_okay = true;
                try {
                    // In IE, actually execute the script.
                    script.onclick();
                } catch (x) {}
            }
            if (script) {
                close_script(utils.closeFrame(1006, "JSONP script loaded abnormally (onreadystatechange)"));
            }
        }
    };
    // IE: event/htmlFor/onclick trick.
    // One can't rely on proper order for onreadystatechange. In order to
    // make sure, set a 'htmlFor' and 'event' properties, so that
    // script code will be installed as 'onclick' handler for the
    // script object. Later, onreadystatechange, manually execute this
    // code. FF and Chrome doesn't work with 'event' and 'htmlFor'
    // set. For reference see:
    //   http://jaubourg.net/2010/07/loading-script-as-onclick-handler-of.html
    // Also, read on that about script ordering:
    //   http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order
    if (typeof script.async === 'undefined' && _document.attachEvent) {
        // According to mozilla docs, in recent browsers script.async defaults
        // to 'true', so we may use it to detect a good browser:
        // https://developer.mozilla.org/en/HTML/Element/script
        if (!/opera/i.test(navigator.userAgent)) {
            // Naively assume we're in IE
            try {
                script.htmlFor = script.id;
                script.event = "onclick";
            } catch (x) {}
            script.async = true;
        } else {
            // Opera, second sync script hack
            script2 = _document.createElement('script');
            script2.text = "try{var a = document.getElementById('"+script.id+"'); if(a)a.onerror();}catch(x){};";
            script.async = script2.async = false;
        }
    }
    if (typeof script.async !== 'undefined') {
        script.async = true;
    }

    // Fallback mostly for Konqueror - stupid timer, 35 seconds shall be plenty.
    tref = setTimeout(function() {
                          close_script(utils.closeFrame(1006, "JSONP script loaded abnormally (timeout)"));
                      }, 35000);

    var head = _document.getElementsByTagName('head')[0];
    head.insertBefore(script, head.firstChild);
    if (script2) {
        head.insertBefore(script2, head.firstChild);
    }
    return close_script;
};
//         [*] End of lib/trans-jsonp-receiver.js


//         [*] Including lib/trans-jsonp-polling.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

// The simplest and most robust transport, using the well-know cross
// domain hack - JSONP. This transport is quite inefficient - one
// mssage could use up to one http request. But at least it works almost
// everywhere.
// Known limitations:
//   o you will get a spinning cursor
//   o for Konqueror a dumb timer is needed to detect errors


var JsonPTransport = SockJS['jsonp-polling'] = function(ri, trans_url) {
    utils.polluteGlobalNamespace();
    var that = this;
    that.ri = ri;
    that.trans_url = trans_url;
    that.send_constructor(jsonPGenericSender);
    that._schedule_recv();
};

// Inheritnace
JsonPTransport.prototype = new BufferedSender();

JsonPTransport.prototype._schedule_recv = function() {
    var that = this;
    var callback = function(data) {
        that._recv_stop = null;
        if (data) {
            // no data - heartbeat;
            if (!that._is_closing) {
                that.ri._didMessage(data);
            }
        }
        // The message can be a close message, and change is_closing state.
        if (!that._is_closing) {
            that._schedule_recv();
        }
    };
    that._recv_stop = jsonPReceiverWrapper(that.trans_url + '/jsonp',
                                           jsonPGenericReceiver, callback);
};

JsonPTransport.enabled = function() {
    return true;
};

JsonPTransport.need_body = true;


JsonPTransport.prototype.doCleanup = function() {
    var that = this;
    that._is_closing = true;
    if (that._recv_stop) {
        that._recv_stop();
    }
    that.ri = that._recv_stop = null;
    that.send_destructor();
};


// Abstract away code that handles global namespace pollution.
var jsonPReceiverWrapper = function(url, constructReceiver, user_callback) {
    var id = 'a' + utils.random_string(6);
    var url_id = url + '?c=' + escape(WPrefix + '.' + id);

    // Unfortunately it is not possible to abort loading of the
    // script. We need to keep track of frake close frames.
    var aborting = 0;

    // Callback will be called exactly once.
    var callback = function(frame) {
        switch(aborting) {
        case 0:
            // Normal behaviour - delete hook _and_ emit message.
            delete _window[WPrefix][id];
            user_callback(frame);
            break;
        case 1:
            // Fake close frame - emit but don't delete hook.
            user_callback(frame);
            aborting = 2;
            break;
        case 2:
            // Got frame after connection was closed, delete hook, don't emit.
            delete _window[WPrefix][id];
            break;
        }
    };

    var close_script = constructReceiver(url_id, callback);
    _window[WPrefix][id] = close_script;
    var stop = function() {
        if (_window[WPrefix][id]) {
            aborting = 1;
            _window[WPrefix][id](utils.closeFrame(1000, "JSONP user aborted read"));
        }
    };
    return stop;
};
//         [*] End of lib/trans-jsonp-polling.js


//         [*] Including lib/trans-xhr.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var AjaxBasedTransport = function() {};
AjaxBasedTransport.prototype = new BufferedSender();

AjaxBasedTransport.prototype.run = function(ri, trans_url,
                                            url_suffix, Receiver, AjaxObject) {
    var that = this;
    that.ri = ri;
    that.trans_url = trans_url;
    that.send_constructor(createAjaxSender(AjaxObject));
    that.poll = new Polling(ri, Receiver,
                            trans_url + url_suffix, AjaxObject);
};

AjaxBasedTransport.prototype.doCleanup = function() {
    var that = this;
    if (that.poll) {
        that.poll.abort();
        that.poll = null;
    }
};

// xhr-streaming
var XhrStreamingTransport = SockJS['xhr-streaming'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/xhr_streaming', XhrReceiver, utils.XHRCorsObject);
};

XhrStreamingTransport.prototype = new AjaxBasedTransport();

XhrStreamingTransport.enabled = function() {
    // Support for CORS Ajax aka Ajax2? Opera 12 claims CORS but
    // doesn't do streaming.
    return (_window.XMLHttpRequest &&
            'withCredentials' in new XMLHttpRequest() &&
            (!/opera/i.test(navigator.userAgent)));
};
XhrStreamingTransport.roundTrips = 2; // preflight, ajax

// Safari gets confused when a streaming ajax request is started
// before onload. This causes the load indicator to spin indefinetely.
XhrStreamingTransport.need_body = true;


// According to:
//   http://stackoverflow.com/questions/1641507/detect-browser-support-for-cross-domain-xmlhttprequests
//   http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/


// xdr-streaming
var XdrStreamingTransport = SockJS['xdr-streaming'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/xhr_streaming', XhrReceiver, utils.XDRObject);
};

XdrStreamingTransport.prototype = new AjaxBasedTransport();

XdrStreamingTransport.enabled = function() {
    return !!_window.XDomainRequest;
};
XdrStreamingTransport.roundTrips = 2; // preflight, ajax



// xhr-polling
var XhrPollingTransport = SockJS['xhr-polling'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/xhr', XhrReceiver, utils.XHRCorsObject);
};

XhrPollingTransport.prototype = new AjaxBasedTransport();

XhrPollingTransport.enabled = XhrStreamingTransport.enabled;
XhrPollingTransport.roundTrips = 2; // preflight, ajax


// xdr-polling
var XdrPollingTransport = SockJS['xdr-polling'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/xhr', XhrReceiver, utils.XDRObject);
};

XdrPollingTransport.prototype = new AjaxBasedTransport();

XdrPollingTransport.enabled = XdrStreamingTransport.enabled;
XdrPollingTransport.roundTrips = 2; // preflight, ajax
//         [*] End of lib/trans-xhr.js


//         [*] Including lib/trans-iframe.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

// Few cool transports do work only for same-origin. In order to make
// them working cross-domain we shall use iframe, served form the
// remote domain. New browsers, have capabilities to communicate with
// cross domain iframe, using postMessage(). In IE it was implemented
// from IE 8+, but of course, IE got some details wrong:
//    http://msdn.microsoft.com/en-us/library/cc197015(v=VS.85).aspx
//    http://stevesouders.com/misc/test-postmessage.php

var IframeTransport = function() {};

IframeTransport.prototype.i_constructor = function(ri, trans_url, base_url) {
    var that = this;
    that.ri = ri;
    that.origin = utils.getOrigin(base_url);
    that.base_url = base_url;
    that.trans_url = trans_url;

    var iframe_url = base_url + '/iframe.html';
    if (that.ri._options.devel) {
        iframe_url += '?t=' + (+new Date);
    }
    that.window_id = utils.random_string(8);
    iframe_url += '#' + that.window_id;

    that.iframeObj = utils.createIframe(iframe_url, function(r) {
                                            that.ri._didClose(1006, "Unable to load an iframe (" + r + ")");
                                        });

    that.onmessage_cb = utils.bind(that.onmessage, that);
    utils.attachMessage(that.onmessage_cb);
};

IframeTransport.prototype.doCleanup = function() {
    var that = this;
    if (that.iframeObj) {
        utils.detachMessage(that.onmessage_cb);
        try {
            // When the iframe is not loaded, IE raises an exception
            // on 'contentWindow'.
            if (that.iframeObj.iframe.contentWindow) {
                that.postMessage('c');
            }
        } catch (x) {}
        that.iframeObj.cleanup();
        that.iframeObj = null;
        that.onmessage_cb = that.iframeObj = null;
    }
};

IframeTransport.prototype.onmessage = function(e) {
    var that = this;

    if (!utils.isSameOriginUrl(e.origin, that.origin)) return;
    var window_id = e.data.slice(0, 8);
    var type = e.data.slice(8, 9);
    var data = e.data.slice(9);

    if (window_id !== that.window_id) return;

    switch(type) {
    case 's':
        that.iframeObj.loaded();
        that.postMessage('s', JSON.stringify([SockJS.version, that.protocol, that.trans_url, that.base_url]));
        break;
    case 't':
        that.ri._didMessage(data);
        break;
    }
};

IframeTransport.prototype.postMessage = function(type, data) {
    var that = this;
    that.iframeObj.post(that.window_id + type + (data || ''), that.origin);
};

IframeTransport.prototype.doSend = function (message) {
    this.postMessage('m', message);
};

IframeTransport.enabled = function() {
    // postMessage misbehaves in konqueror 4.6.5 - the messages are delivered with
    // huge delay, or not at all.
    var konqueror = navigator && navigator.userAgent && navigator.userAgent.indexOf('Konqueror') !== -1;
    return ((typeof _window.postMessage === 'function' ||
            typeof _window.postMessage === 'object') && (!konqueror));
};
//         [*] End of lib/trans-iframe.js


//         [*] Including lib/trans-iframe-within.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var curr_window_id;

var postMessage = function (type, data) {
    if(parent !== _window) {
        parent.postMessage(curr_window_id + type + (data || ''), '*');
    } else {
        utils.log("Can't postMessage, no parent window.", type, data);
    }
};

var FacadeJS = function() {};
FacadeJS.prototype._didClose = function (code, reason) {
    postMessage('t', utils.closeFrame(code, reason));
};
FacadeJS.prototype._didMessage = function (frame) {
    postMessage('t', frame);
};
FacadeJS.prototype._doSend = function (data) {
    this._transport.doSend(data);
};
FacadeJS.prototype._doCleanup = function () {
    this._transport.doCleanup();
};

utils.parent_origin = undefined;

SockJS.bootstrap_iframe = function() {
    var facade;
    curr_window_id = _document.location.hash.slice(1);
    var onMessage = function(e) {
        if(e.source !== parent) return;
        if(typeof utils.parent_origin === 'undefined')
            utils.parent_origin = e.origin;
        if (e.origin !== utils.parent_origin) return;

        var window_id = e.data.slice(0, 8);
        var type = e.data.slice(8, 9);
        var data = e.data.slice(9);
        if (window_id !== curr_window_id) return;
        switch(type) {
        case 's':
            var p = JSON.parse(data);
            var version = p[0];
            var protocol = p[1];
            var trans_url = p[2];
            var base_url = p[3];
            if (version !== SockJS.version) {
                utils.log("Incompatibile SockJS! Main site uses:" +
                          " \"" + version + "\", the iframe:" +
                          " \"" + SockJS.version + "\".");
            }
            if (!utils.flatUrl(trans_url) || !utils.flatUrl(base_url)) {
                utils.log("Only basic urls are supported in SockJS");
                return;
            }

            if (!utils.isSameOriginUrl(trans_url) ||
                !utils.isSameOriginUrl(base_url)) {
                utils.log("Can't connect to different domain from within an " +
                          "iframe. (" + JSON.stringify([_window.location.href, trans_url, base_url]) +
                          ")");
                return;
            }
            facade = new FacadeJS();
            facade._transport = new FacadeJS[protocol](facade, trans_url, base_url);
            break;
        case 'm':
            facade._doSend(data);
            break;
        case 'c':
            if (facade)
                facade._doCleanup();
            facade = null;
            break;
        }
    };

    // alert('test ticker');
    // facade = new FacadeJS();
    // facade._transport = new FacadeJS['w-iframe-xhr-polling'](facade, 'http://host.com:9999/ticker/12/basd');

    utils.attachMessage(onMessage);

    // Start
    postMessage('s');
};
//         [*] End of lib/trans-iframe-within.js


//         [*] Including lib/info.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var InfoReceiver = function(base_url, AjaxObject) {
    var that = this;
    utils.delay(function(){that.doXhr(base_url, AjaxObject);});
};

InfoReceiver.prototype = new EventEmitter(['finish']);

InfoReceiver.prototype.doXhr = function(base_url, AjaxObject) {
    var that = this;
    var t0 = (new Date()).getTime();
    var xo = new AjaxObject('GET', base_url + '/info');

    var tref = utils.delay(8000,
                           function(){xo.ontimeout();});

    xo.onfinish = function(status, text) {
        clearTimeout(tref);
        tref = null;
        if (status === 200) {
            var rtt = (new Date()).getTime() - t0;
            var info = JSON.parse(text);
            if (typeof info !== 'object') info = {};
            that.emit('finish', info, rtt);
        } else {
            that.emit('finish');
        }
    };
    xo.ontimeout = function() {
        xo.close();
        that.emit('finish');
    };
};

var InfoReceiverIframe = function(base_url) {
    var that = this;
    var go = function() {
        var ifr = new IframeTransport();
        ifr.protocol = 'w-iframe-info-receiver';
        var fun = function(r) {
            if (typeof r === 'string' && r.substr(0,1) === 'm') {
                var d = JSON.parse(r.substr(1));
                var info = d[0], rtt = d[1];
                that.emit('finish', info, rtt);
            } else {
                that.emit('finish');
            }
            ifr.doCleanup();
            ifr = null;
        };
        var mock_ri = {
            _options: {},
            _didClose: fun,
            _didMessage: fun
        };
        ifr.i_constructor(mock_ri, base_url, base_url);
    }
    if(!_document.body) {
        utils.attachEvent('load', go);
    } else {
        go();
    }
};
InfoReceiverIframe.prototype = new EventEmitter(['finish']);


var InfoReceiverFake = function() {
    // It may not be possible to do cross domain AJAX to get the info
    // data, for example for IE7. But we want to run JSONP, so let's
    // fake the response, with rtt=2s (rto=6s).
    var that = this;
    utils.delay(function() {
        that.emit('finish', {}, 2000);
    });
};
InfoReceiverFake.prototype = new EventEmitter(['finish']);

var createInfoReceiver = function(base_url) {
    if (utils.isSameOriginUrl(base_url)) {
        // If, for some reason, we have SockJS locally - there's no
        // need to start up the complex machinery. Just use ajax.
        return new InfoReceiver(base_url, utils.XHRLocalObject);
    }
    switch (utils.isXHRCorsCapable()) {
    case 1:
        return new InfoReceiver(base_url, utils.XHRLocalObject);
    case 2:
        return new InfoReceiver(base_url, utils.XDRObject);
    case 3:
        // Opera
        return new InfoReceiverIframe(base_url);
    default:
        // IE 7
        return new InfoReceiverFake();
    };
};


var WInfoReceiverIframe = FacadeJS['w-iframe-info-receiver'] = function(ri, _trans_url, base_url) {
    var ir = new InfoReceiver(base_url, utils.XHRLocalObject);
    ir.onfinish = function(info, rtt) {
        ri._didMessage('m'+JSON.stringify([info, rtt]));
        ri._didClose();
    }
};
WInfoReceiverIframe.prototype.doCleanup = function() {};
//         [*] End of lib/info.js


//         [*] Including lib/trans-iframe-eventsource.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var EventSourceIframeTransport = SockJS['iframe-eventsource'] = function () {
    var that = this;
    that.protocol = 'w-iframe-eventsource';
    that.i_constructor.apply(that, arguments);
};

EventSourceIframeTransport.prototype = new IframeTransport();

EventSourceIframeTransport.enabled = function () {
    return ('EventSource' in _window) && IframeTransport.enabled();
};

EventSourceIframeTransport.need_body = true;
EventSourceIframeTransport.roundTrips = 3; // html, javascript, eventsource


// w-iframe-eventsource
var EventSourceTransport = FacadeJS['w-iframe-eventsource'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/eventsource', EventSourceReceiver, utils.XHRLocalObject);
}
EventSourceTransport.prototype = new AjaxBasedTransport();
//         [*] End of lib/trans-iframe-eventsource.js


//         [*] Including lib/trans-iframe-xhr-polling.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var XhrPollingIframeTransport = SockJS['iframe-xhr-polling'] = function () {
    var that = this;
    that.protocol = 'w-iframe-xhr-polling';
    that.i_constructor.apply(that, arguments);
};

XhrPollingIframeTransport.prototype = new IframeTransport();

XhrPollingIframeTransport.enabled = function () {
    return _window.XMLHttpRequest && IframeTransport.enabled();
};

XhrPollingIframeTransport.need_body = true;
XhrPollingIframeTransport.roundTrips = 3; // html, javascript, xhr


// w-iframe-xhr-polling
var XhrPollingITransport = FacadeJS['w-iframe-xhr-polling'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/xhr', XhrReceiver, utils.XHRLocalObject);
};

XhrPollingITransport.prototype = new AjaxBasedTransport();
//         [*] End of lib/trans-iframe-xhr-polling.js


//         [*] Including lib/trans-iframe-htmlfile.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

// This transport generally works in any browser, but will cause a
// spinning cursor to appear in any browser other than IE.
// We may test this transport in all browsers - why not, but in
// production it should be only run in IE.

var HtmlFileIframeTransport = SockJS['iframe-htmlfile'] = function () {
    var that = this;
    that.protocol = 'w-iframe-htmlfile';
    that.i_constructor.apply(that, arguments);
};

// Inheritance.
HtmlFileIframeTransport.prototype = new IframeTransport();

HtmlFileIframeTransport.enabled = function() {
    return IframeTransport.enabled();
};

HtmlFileIframeTransport.need_body = true;
HtmlFileIframeTransport.roundTrips = 3; // html, javascript, htmlfile


// w-iframe-htmlfile
var HtmlFileTransport = FacadeJS['w-iframe-htmlfile'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/htmlfile', HtmlfileReceiver, utils.XHRLocalObject);
};
HtmlFileTransport.prototype = new AjaxBasedTransport();
//         [*] End of lib/trans-iframe-htmlfile.js


//         [*] Including lib/trans-polling.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var Polling = function(ri, Receiver, recv_url, AjaxObject) {
    var that = this;
    that.ri = ri;
    that.Receiver = Receiver;
    that.recv_url = recv_url;
    that.AjaxObject = AjaxObject;
    that._scheduleRecv();
};

Polling.prototype._scheduleRecv = function() {
    var that = this;
    var poll = that.poll = new that.Receiver(that.recv_url, that.AjaxObject);
    var msg_counter = 0;
    poll.onmessage = function(e) {
        msg_counter += 1;
        that.ri._didMessage(e.data);
    };
    poll.onclose = function(e) {
        that.poll = poll = poll.onmessage = poll.onclose = null;
        if (!that.poll_is_closing) {
            if (e.reason === 'permanent') {
                that.ri._didClose(1006, 'Polling error (' + e.reason + ')');
            } else {
                that._scheduleRecv();
            }
        }
    };
};

Polling.prototype.abort = function() {
    var that = this;
    that.poll_is_closing = true;
    if (that.poll) {
        that.poll.abort();
    }
};
//         [*] End of lib/trans-polling.js


//         [*] Including lib/trans-receiver-eventsource.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var EventSourceReceiver = function(url) {
    var that = this;
    var es = new EventSource(url);
    es.onmessage = function(e) {
        that.dispatchEvent(new SimpleEvent('message',
                                           {'data': unescape(e.data)}));
    };
    that.es_close = es.onerror = function(e, abort_reason) {
        // ES on reconnection has readyState = 0 or 1.
        // on network error it's CLOSED = 2
        var reason = abort_reason ? 'user' :
            (es.readyState !== 2 ? 'network' : 'permanent');
        that.es_close = es.onmessage = es.onerror = null;
        // EventSource reconnects automatically.
        es.close();
        es = null;
        // Safari and chrome < 15 crash if we close window before
        // waiting for ES cleanup. See:
        //   https://code.google.com/p/chromium/issues/detail?id=89155
        utils.delay(200, function() {
                        that.dispatchEvent(new SimpleEvent('close', {reason: reason}));
                    });
    };
};

EventSourceReceiver.prototype = new REventTarget();

EventSourceReceiver.prototype.abort = function() {
    var that = this;
    if (that.es_close) {
        that.es_close({}, true);
    }
};
//         [*] End of lib/trans-receiver-eventsource.js


//         [*] Including lib/trans-receiver-htmlfile.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var _is_ie_htmlfile_capable;
var isIeHtmlfileCapable = function() {
    if (_is_ie_htmlfile_capable === undefined) {
        if ('ActiveXObject' in _window) {
            try {
                _is_ie_htmlfile_capable = !!new ActiveXObject('htmlfile');
            } catch (x) {}
        } else {
            _is_ie_htmlfile_capable = false;
        }
    }
    return _is_ie_htmlfile_capable;
};


var HtmlfileReceiver = function(url) {
    var that = this;
    utils.polluteGlobalNamespace();

    that.id = 'a' + utils.random_string(6, 26);
    url += ((url.indexOf('?') === -1) ? '?' : '&') +
        'c=' + escape(WPrefix + '.' + that.id);

    var constructor = isIeHtmlfileCapable() ?
        utils.createHtmlfile : utils.createIframe;

    var iframeObj;
    _window[WPrefix][that.id] = {
        start: function () {
            iframeObj.loaded();
        },
        message: function (data) {
            that.dispatchEvent(new SimpleEvent('message', {'data': data}));
        },
        stop: function () {
            that.iframe_close({}, 'network');
        }
    };
    that.iframe_close = function(e, abort_reason) {
        iframeObj.cleanup();
        that.iframe_close = iframeObj = null;
        delete _window[WPrefix][that.id];
        that.dispatchEvent(new SimpleEvent('close', {reason: abort_reason}));
    };
    iframeObj = constructor(url, function(e) {
                                that.iframe_close({}, 'permanent');
                            });
};

HtmlfileReceiver.prototype = new REventTarget();

HtmlfileReceiver.prototype.abort = function() {
    var that = this;
    if (that.iframe_close) {
        that.iframe_close({}, 'user');
    }
};
//         [*] End of lib/trans-receiver-htmlfile.js


//         [*] Including lib/trans-receiver-xhr.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var XhrReceiver = function(url, AjaxObject) {
    var that = this;
    var buf_pos = 0;

    that.xo = new AjaxObject('POST', url, null);
    that.xo.onchunk = function(status, text) {
        if (status !== 200) return;
        while (1) {
            var buf = text.slice(buf_pos);
            var p = buf.indexOf('\n');
            if (p === -1) break;
            buf_pos += p+1;
            var msg = buf.slice(0, p);
            that.dispatchEvent(new SimpleEvent('message', {data: msg}));
        }
    };
    that.xo.onfinish = function(status, text) {
        that.xo.onchunk(status, text);
        that.xo = null;
        var reason = status === 200 ? 'network' : 'permanent';
        that.dispatchEvent(new SimpleEvent('close', {reason: reason}));
    }
};

XhrReceiver.prototype = new REventTarget();

XhrReceiver.prototype.abort = function() {
    var that = this;
    if (that.xo) {
        that.xo.close();
        that.dispatchEvent(new SimpleEvent('close', {reason: 'user'}));
        that.xo = null;
    }
};
//         [*] End of lib/trans-receiver-xhr.js


//         [*] Including lib/test-hooks.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

// For testing
SockJS.getUtils = function(){
    return utils;
};

SockJS.getIframeTransport = function(){
    return IframeTransport;
};
//         [*] End of lib/test-hooks.js

                  return SockJS;
          })();
if ('_sockjs_onload' in window) setTimeout(_sockjs_onload, 1);

// AMD compliance
if (typeof define === 'function' && define.amd) {
    define('sockjs', [], function(){return SockJS;});
}
//     [*] End of lib/index.js

// [*] End of lib/all.js

})(this["Primus"]);
(function PrimusLibraryWrap(Primus) {;(function (Primus, undefined) {
function spark(Spark, Emitter) {

  'use strict';

  /**
   * `Primus#initialise` reference.
   */

  var initialise = Spark.prototype.initialise;

  /**
   * Initialise the Primus and setup all
   * parsers and internal listeners.
   *
   * @api private
   */

  Spark.prototype.initialise = function init() {
    if (!this.emitter) this.emitter = new Emitter(this);
    if (!this.__initialise) initialise.apply(this, arguments);
  };

  // Extend the Spark to add the send method if Spark.readable
  // is not supported then we set the method on the prototype instead.
  if (!Spark.readable) return Spark.prototype.send = send;
  if (!Spark.prototype.send) Spark.readable('send', send);

  /**
   * Emits to this Spark.
   *
   * @param {String} ev The event.
   * @param {Mixed} [data] The data to broadcast.
   * @param {Function} [fn] The callback function.
   * @return {Socket} this
   * @api public
   */

  function send(ev, data, fn) {
    // ignore newListener event to avoid this error in node 0.8
    // https://github.com/cayasso/primus-emitter/issues/3
    if (/^(newListener|removeListener)/.test(ev)) return this;
    this.emitter.send.apply(this.emitter, arguments);
    return this;
  }

}
function emitter() {

  'use strict';

  /**
   * Event packets.
   */

  var packets = {
    EVENT:  0,
    ACK:    1
  };

  // shortcut to slice
  var slice = [].slice;

  /**
   * Initialize a new `Emitter`.
   *
   * @api public
   */

  function Emitter(conn) {
    if (!(this instanceof Emitter)) return new Emitter(conn);
    this.ids = 1;
    this.acks = {};
    this.conn = conn;
    if (this.conn) this.bind();
  }

  /**
   * Bind `Emitter` events.
   *
   * @return {Emitter} self
   * @api private
   */

  Emitter.prototype.bind = function bind() {
    var em = this;
    this.conn.on('data', function ondata(data) {
      em.ondata.call(em, data);
    });
    return this;
  };

  /**
   * Called with incoming transport data.
   *
   * @param {Object} packet
   * @return {Emitter} self
   * @api private
   */

  Emitter.prototype.ondata = function ondata(packet) {
    switch (packet.type) {
      case packets.EVENT:
        this.onevent(packet);
        break;
      case packets.ACK:
        this.onack(packet);
        break;
    }
  };

  /**
   * Send a message to client.
   *
   * @return {Emitter} self
   * @api public
   */

  Emitter.prototype.send = function send() {
    var args = slice.call(arguments);
    this.conn.write(this.packet(args));
    return this;
  };

  /**
   * Prepare packet for emitting.
   *
   * @param {Array} arguments
   * @return {Object} packet
   * @api private
   */

  Emitter.prototype.packet = function pack(args) {
    var packet = { type: packets.EVENT, data: args };
    // access last argument to see if it's an ACK callback
    if ('function' === typeof args[args.length - 1]) {
      var id = this.ids++;
      if (this.acks) {
        this.acks[id] = args.pop();
        packet.id = id;
      }
    }
    return packet;
  };

  /**
   * Called upon event packet.
   *
   * @param {Object} packet object
   * @api private
   */

  Emitter.prototype.onevent = function onevent(packet) {
    var args = packet.data || [];
    if (packet.id) {
      args.push(this.ack(packet.id));
    }
    if (this.conn.reserved(args[0])) return this;
    this.conn.emit.apply(this.conn, args);
    return this;
  };

  /**
   * Produces an ack callback to emit with an event.
   *
   * @param {Number} packet id
   * @return {Function}
   * @api private
   */

  Emitter.prototype.ack = function ack(id) {
    var conn = this.conn;
    var sent = false;
    return function(){      
      if (sent) return; // prevent double callbacks
      conn.write({
        id: id,
        type: packets.ACK,
        data: slice.call(arguments)
      });
    };
  };

  /**
   * Called upon ack packet.
   *
   * @return {Emitter} self
   * @api private
   */

  Emitter.prototype.onack = function onack(packet) {
    var ack = this.acks[packet.id];
    if ('function' === typeof ack) {
      ack.apply(this, packet.data);
      delete this.acks[packet.id];
    } else {
      console.log('bad ack %s', packet.id);
    }
    return this;
  };

  // Expose packets
  Emitter.packets = packets;
  
  return Emitter;

}
 if (undefined === Primus) return;
 Primus.$ = Primus.$ || {};
 Primus.$.emitter = {};
 Primus.$.emitter.spark = spark;
 Primus.$.emitter.emitter = emitter;
 spark(Primus, emitter());
})(Primus);})(this["Primus"]);
/**
 * sifter.js
 * Copyright (c) 2013 Brian Reavis & contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
 * file except in compliance with the License. You may obtain a copy of the License at:
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
 * ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 *
 * @author Brian Reavis <brian@thirdroute.com>
 */

(function(root, factory) {
  if (typeof define === 'function' && define.amd) {
    define('sifter', factory);
  } else if (typeof exports === 'object') {
    module.exports = factory();
  } else {
    root.Sifter = factory();
  }
}(this, function() {

  /**
   * Textually searches arrays and hashes of objects
   * by property (or multiple properties). Designed
   * specifically for autocomplete.
   *
   * @constructor
   * @param {array|object} items
   * @param {object} items
   */
  var Sifter = function(items, settings) {
    this.items = items;
    this.settings = settings || {diacritics: true};
  };

  /**
   * Splits a search string into an array of individual
   * regexps to be used to match results.
   *
   * @param {string} query
   * @returns {array}
   */
  Sifter.prototype.tokenize = function(query) {
    query = trim(String(query || '').toLowerCase());
    if (!query || !query.length) return [];

    var i, n, regex, letter;
    var tokens = [];
    var words = query.split(/ +/);

    for (i = 0, n = words.length; i < n; i++) {
      regex = escape_regex(words[i]);
      if (this.settings.diacritics) {
        for (letter in DIACRITICS) {
          if (DIACRITICS.hasOwnProperty(letter)) {
            regex = regex.replace(new RegExp(letter, 'g'), DIACRITICS[letter]);
          }
        }
      }
      tokens.push({
        string : words[i],
        regex  : new RegExp(regex, 'i')
      });
    }

    return tokens;
  };

  /**
   * Iterates over arrays and hashes.
   *
   * ```
   * this.iterator(this.items, function(item, id) {
   *    // invoked for each item
   * });
   * ```
   *
   * @param {array|object} object
   */
  Sifter.prototype.iterator = function(object, callback) {
    var iterator;
    if (is_array(object)) {
      iterator = Array.prototype.forEach || function(callback) {
        for (var i = 0, n = this.length; i < n; i++) {
          callback(this[i], i, this);
        }
      };
    } else {
      iterator = function(callback) {
        for (var key in this) {
          if (this.hasOwnProperty(key)) {
            callback(this[key], key, this);
          }
        }
      };
    }

    iterator.apply(object, [callback]);
  };

  /**
   * Returns a function to be used to score individual results.
   *
   * Good matches will have a higher score than poor matches.
   * If an item is not a match, 0 will be returned by the function.
   *
   * @param {object|string} search
   * @param {object} options (optional)
   * @returns {function}
   */
  Sifter.prototype.getScoreFunction = function(search, options) {
    var self, fields, tokens, token_count;

    self        = this;
    search      = self.prepareSearch(search, options);
    tokens      = search.tokens;
    fields      = search.options.fields;
    token_count = tokens.length;

    /**
     * Calculates how close of a match the
     * given value is against a search token.
     *
     * @param {mixed} value
     * @param {object} token
     * @return {number}
     */
    var scoreValue = function(value, token) {
      var score, pos;

      if (!value) return 0;
      value = String(value || '');
      pos = value.search(token.regex);
      if (pos === -1) return 0;
      score = token.string.length / value.length;
      if (pos === 0) score += 0.5;
      return score;
    };

    /**
     * Calculates the score of an object
     * against the search query.
     *
     * @param {object} token
     * @param {object} data
     * @return {number}
     */
    var scoreObject = (function() {
      var field_count = fields.length;
      if (!field_count) {
        return function() { return 0; };
      }
      if (field_count === 1) {
        return function(token, data) {
          return scoreValue(data[fields[0]], token);
        };
      }
      return function(token, data) {
        for (var i = 0, sum = 0; i < field_count; i++) {
          sum += scoreValue(data[fields[i]], token);
        }
        return sum / field_count;
      };
    })();

    if (!token_count) {
      return function() { return 0; };
    }
    if (token_count === 1) {
      return function(data) {
        return scoreObject(tokens[0], data);
      };
    }

    if (search.options.conjunction === 'and') {
      return function(data) {
        var score;
        for (var i = 0, sum = 0; i < token_count; i++) {
          score = scoreObject(tokens[i], data);
          if (score <= 0) return 0;
          sum += score;
        }
        return sum / token_count;
      };
    } else {
      return function(data) {
        for (var i = 0, sum = 0; i < token_count; i++) {
          sum += scoreObject(tokens[i], data);
        }
        return sum / token_count;
      };
    }
  };

  /**
   * Returns a function that can be used to compare two
   * results, for sorting purposes. If no sorting should
   * be performed, `null` will be returned.
   *
   * @param {string|object} search
   * @param {object} options
   * @return function(a,b)
   */
  Sifter.prototype.getSortFunction = function(search, options) {
    var i, n, self, field, fields, fields_count, multiplier, multipliers, get_field, implicit_score, sort;

    self   = this;
    search = self.prepareSearch(search, options);
    sort   = (!search.query && options.sort_empty) || options.sort;

    /**
     * Fetches the specified sort field value
     * from a search result item.
     *
     * @param  {string} name
     * @param  {object} result
     * @return {mixed}
     */
    get_field  = function(name, result) {
      if (name === '$score') return result.score;
      return self.items[result.id][name];
    };

    // parse options
    fields = [];
    if (sort) {
      for (i = 0, n = sort.length; i < n; i++) {
        if (search.query || sort[i].field !== '$score') {
          fields.push(sort[i]);
        }
      }
    }

    // the "$score" field is implied to be the primary
    // sort field, unless it's manually specified
    if (search.query) {
      implicit_score = true;
      for (i = 0, n = fields.length; i < n; i++) {
        if (fields[i].field === '$score') {
          implicit_score = false;
          break;
        }
      }
      if (implicit_score) {
        fields.unshift({field: '$score', direction: 'desc'});
      }
    } else {
      for (i = 0, n = fields.length; i < n; i++) {
        if (fields[i].field === '$score') {
          fields.splice(i, 1);
          break;
        }
      }
    }

    multipliers = [];
    for (i = 0, n = fields.length; i < n; i++) {
      multipliers.push(fields[i].direction === 'desc' ? -1 : 1);
    }

    // build function
    fields_count = fields.length;
    if (!fields_count) {
      return null;
    } else if (fields_count === 1) {
      field = fields[0].field;
      multiplier = multipliers[0];
      return function(a, b) {
        return multiplier * cmp(
          get_field(field, a),
          get_field(field, b)
        );
      };
    } else {
      return function(a, b) {
        var i, result, a_value, b_value, field;
        for (i = 0; i < fields_count; i++) {
          field = fields[i].field;
          result = multipliers[i] * cmp(
            get_field(field, a),
            get_field(field, b)
          );
          if (result) return result;
        }
        return 0;
      };
    }
  };

  /**
   * Parses a search query and returns an object
   * with tokens and fields ready to be populated
   * with results.
   *
   * @param {string} query
   * @param {object} options
   * @returns {object}
   */
  Sifter.prototype.prepareSearch = function(query, options) {
    if (typeof query === 'object') return query;

    options = extend({}, options);

    var option_fields     = options.fields;
    var option_sort       = options.sort;
    var option_sort_empty = options.sort_empty;

    if (option_fields && !is_array(option_fields)) options.fields = [option_fields];
    if (option_sort && !is_array(option_sort)) options.sort = [option_sort];
    if (option_sort_empty && !is_array(option_sort_empty)) options.sort_empty = [option_sort_empty];

    return {
      options : options,
      query   : String(query || '').toLowerCase(),
      tokens  : this.tokenize(query),
      total   : 0,
      items   : []
    };
  };

  /**
   * Searches through all items and returns a sorted array of matches.
   *
   * The `options` parameter can contain:
   *
   *   - fields {string|array}
   *   - sort {array}
   *   - score {function}
   *   - filter {bool}
   *   - limit {integer}
   *
   * Returns an object containing:
   *
   *   - options {object}
   *   - query {string}
   *   - tokens {array}
   *   - total {int}
   *   - items {array}
   *
   * @param {string} query
   * @param {object} options
   * @returns {object}
   */
  Sifter.prototype.search = function(query, options) {
    var self = this, value, score, search, calculateScore;
    var fn_sort;
    var fn_score;

    search  = this.prepareSearch(query, options);
    options = search.options;
    query   = search.query;

    // generate result scoring function
    fn_score = options.score || self.getScoreFunction(search);

    // perform search and sort
    if (query.length) {
      self.iterator(self.items, function(item, id) {
        score = fn_score(item);
        if (options.filter === false || score > 0) {
          search.items.push({'score': score, 'id': id});
        }
      });
    } else {
      self.iterator(self.items, function(item, id) {
        search.items.push({'score': 1, 'id': id});
      });
    }

    fn_sort = self.getSortFunction(search, options);
    if (fn_sort) search.items.sort(fn_sort);

    // apply limits
    search.total = search.items.length;
    if (typeof options.limit === 'number') {
      search.items = search.items.slice(0, options.limit);
    }

    return search;
  };

  // utilities
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  var cmp = function(a, b) {
    if (typeof a === 'number' && typeof b === 'number') {
      return a > b ? 1 : (a < b ? -1 : 0);
    }
    a = String(a || '').toLowerCase();
    b = String(b || '').toLowerCase();
    if (a > b) return 1;
    if (b > a) return -1;
    return 0;
  };

  var extend = function(a, b) {
    var i, n, k, object;
    for (i = 1, n = arguments.length; i < n; i++) {
      object = arguments[i];
      if (!object) continue;
      for (k in object) {
        if (object.hasOwnProperty(k)) {
          a[k] = object[k];
        }
      }
    }
    return a;
  };

  var trim = function(str) {
    return (str + '').replace(/^\s+|\s+$|/g, '');
  };

  var escape_regex = function(str) {
    return (str + '').replace(/([.?*+^$[\]\\(){}|-])/g, '\\$1');
  };

  var is_array = Array.isArray || ($ && $.isArray) || function(object) {
    return Object.prototype.toString.call(object) === '[object Array]';
  };

  var DIACRITICS = {
    'a': '[aÀÁÂÃÄÅà áâãäå]',
    'c': '[cÇçćĆčČ]',
    'd': '[dđĐďĎ]',
    'e': '[eÈÉÊËèéêëěĚ]',
    'i': '[iÌÍÎÏìíîï]',
    'n': '[nÑñňŇ]',
    'o': '[oÒÓÔÕÕÖØòóôõöø]',
    'r': '[rřŘ]',
    's': '[sÅ Å¡]',
    't': '[tťŤ]',
    'u': '[uÙÚÛÜùúûüůŮ]',
    'y': '[yŸÿýÝ]',
    'z': '[zŽž]'
  };

  // export
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  return Sifter;
}));



/**
 * microplugin.js
 * Copyright (c) 2013 Brian Reavis & contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
 * file except in compliance with the License. You may obtain a copy of the License at:
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
 * ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 *
 * @author Brian Reavis <brian@thirdroute.com>
 */

(function(root, factory) {
  if (typeof define === 'function' && define.amd) {
    define('microplugin', factory);
  } else if (typeof exports === 'object') {
    module.exports = factory();
  } else {
    root.MicroPlugin = factory();
  }
}(this, function() {
  var MicroPlugin = {};

  MicroPlugin.mixin = function(Interface) {
    Interface.plugins = {};

    /**
     * Initializes the listed plugins (with options).
     * Acceptable formats:
     *
     * List (without options):
     *   ['a', 'b', 'c']
     *
     * List (with options):
     *   [{'name': 'a', options: {}}, {'name': 'b', options: {}}]
     *
     * Hash (with options):
     *   {'a': { ... }, 'b': { ... }, 'c': { ... }}
     *
     * @param {mixed} plugins
     */
    Interface.prototype.initializePlugins = function(plugins) {
      var i, n, key;
      var self  = this;
      var queue = [];

      self.plugins = {
        names     : [],
        settings  : {},
        requested : {},
        loaded    : {}
      };

      if (utils.isArray(plugins)) {
        for (i = 0, n = plugins.length; i < n; i++) {
          if (typeof plugins[i] === 'string') {
            queue.push(plugins[i]);
          } else {
            self.plugins.settings[plugins[i].name] = plugins[i].options;
            queue.push(plugins[i].name);
          }
        }
      } else if (plugins) {
        for (key in plugins) {
          if (plugins.hasOwnProperty(key)) {
            self.plugins.settings[key] = plugins[key];
            queue.push(key);
          }
        }
      }

      while (queue.length) {
        self.require(queue.shift());
      }
    };

    Interface.prototype.loadPlugin = function(name) {
      var self    = this;
      var plugins = self.plugins;
      var plugin  = Interface.plugins[name];

      if (!Interface.plugins.hasOwnProperty(name)) {
        throw new Error('Unable to find "' +  name + '" plugin');
      }

      plugins.requested[name] = true;
      plugins.loaded[name] = plugin.fn.apply(self, [self.plugins.settings[name] || {}]);
      plugins.names.push(name);
    };

    /**
     * Initializes a plugin.
     *
     * @param {string} name
     */
    Interface.prototype.require = function(name) {
      var self = this;
      var plugins = self.plugins;

      if (!self.plugins.loaded.hasOwnProperty(name)) {
        if (plugins.requested[name]) {
          throw new Error('Plugin has circular dependency ("' + name + '")');
        }
        self.loadPlugin(name);
      }

      return plugins.loaded[name];
    };

    /**
     * Registers a plugin.
     *
     * @param {string} name
     * @param {function} fn
     */
    Interface.define = function(name, fn) {
      Interface.plugins[name] = {
        'name' : name,
        'fn'   : fn
      };
    };
  };

  var utils = {
    isArray: Array.isArray || function(vArg) {
      return Object.prototype.toString.call(vArg) === '[object Array]';
    }
  };

  return MicroPlugin;
}));

/**
 * selectize.js (v0.9.0)
 * Copyright (c) 2013 Brian Reavis & contributors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
 * file except in compliance with the License. You may obtain a copy of the License at:
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
 * ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 *
 * @author Brian Reavis <brian@thirdroute.com>
 */

/*jshint curly:false */
/*jshint browser:true */

(function(root, factory) {
  if (typeof define === 'function' && define.amd) {
    define('selectize', ['jquery','sifter','microplugin'], factory);
  } else if (typeof exports === 'object') {
    module.exports = factory(require('jquery'), require('sifter'), require('microplugin'));
  } else {
    root.Selectize = factory(root.jQuery, root.Sifter, root.MicroPlugin);
  }
}(this, function($, Sifter, MicroPlugin) {
  'use strict';

  var highlight = function($element, pattern) {
    if (typeof pattern === 'string' && !pattern.length) return;
    var regex = (typeof pattern === 'string') ? new RegExp(pattern, 'i') : pattern;
  
    var highlight = function(node) {
      var skip = 0;
      if (node.nodeType === 3) {
        var pos = node.data.search(regex);
        if (pos >= 0 && node.data.length > 0) {
          var match = node.data.match(regex);
          var spannode = document.createElement('span');
          spannode.className = 'highlight';
          var middlebit = node.splitText(pos);
          var endbit = middlebit.splitText(match[0].length);
          var middleclone = middlebit.cloneNode(true);
          spannode.appendChild(middleclone);
          middlebit.parentNode.replaceChild(spannode, middlebit);
          skip = 1;
        }
      } else if (node.nodeType === 1 && node.childNodes && !/(script|style)/i.test(node.tagName)) {
        for (var i = 0; i < node.childNodes.length; ++i) {
          i += highlight(node.childNodes[i]);
        }
      }
      return skip;
    };
  
    return $element.each(function() {
      highlight(this);
    });
  };
  
  var MicroEvent = function() {};
  MicroEvent.prototype = {
    on: function(event, fct){
      this._events = this._events || {};
      this._events[event] = this._events[event] || [];
      this._events[event].push(fct);
    },
    off: function(event, fct){
      var n = arguments.length;
      if (n === 0) return delete this._events;
      if (n === 1) return delete this._events[event];
  
      this._events = this._events || {};
      if (event in this._events === false) return;
      this._events[event].splice(this._events[event].indexOf(fct), 1);
    },
    trigger: function(event /* , args... */){
      this._events = this._events || {};
      if (event in this._events === false) return;
      for (var i = 0; i < this._events[event].length; i++){
        this._events[event][i].apply(this, Array.prototype.slice.call(arguments, 1));
      }
    }
  };
  
  /**
   * Mixin will delegate all MicroEvent.js function in the destination object.
   *
   * - MicroEvent.mixin(Foobar) will make Foobar able to use MicroEvent
   *
   * @param {object} the object which will support MicroEvent
   */
  MicroEvent.mixin = function(destObject){
    var props = ['on', 'off', 'trigger'];
    for (var i = 0; i < props.length; i++){
      destObject.prototype[props[i]] = MicroEvent.prototype[props[i]];
    }
  };
  
  var IS_MAC        = /Mac/.test(navigator.userAgent);
  
  var KEY_A         = 65;
  var KEY_COMMA     = 188;
  var KEY_RETURN    = 13;
  var KEY_ESC       = 27;
  var KEY_LEFT      = 37;
  var KEY_UP        = 38;
  var KEY_P         = 80;
  var KEY_RIGHT     = 39;
  var KEY_DOWN      = 40;
  var KEY_N         = 78;
  var KEY_BACKSPACE = 8;
  var KEY_DELETE    = 46;
  var KEY_SHIFT     = 16;
  var KEY_CMD       = IS_MAC ? 91 : 17;
  var KEY_CTRL      = IS_MAC ? 18 : 17;
  var KEY_TAB       = 9;
  
  var TAG_SELECT    = 1;
  var TAG_INPUT     = 2;
  
  
  var isset = function(object) {
    return typeof object !== 'undefined';
  };
  
  /**
   * Converts a scalar to its best string representation
   * for hash keys and HTML attribute values.
   *
   * Transformations:
   *   'str'     -> 'str'
   *   null      -> ''
   *   undefined -> ''
   *   true      -> '1'
   *   false     -> '0'
   *   0         -> '0'
   *   1         -> '1'
   *
   * @param {string} value
   * @returns {string}
   */
  var hash_key = function(value) {
    if (typeof value === 'undefined' || value === null) return '';
    if (typeof value === 'boolean') return value ? '1' : '0';
    return value + '';
  };
  
  /**
   * Escapes a string for use within HTML.
   *
   * @param {string} str
   * @returns {string}
   */
  var escape_html = function(str) {
    return (str + '')
      .replace(/&/g, '&amp;')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/"/g, '&quot;');
  };
  
  /**
   * Escapes "$" characters in replacement strings.
   *
   * @param {string} str
   * @returns {string}
   */
  var escape_replace = function(str) {
    return (str + '').replace(/\$/g, '$$$$');
  };
  
  var hook = {};
  
  /**
   * Wraps `method` on `self` so that `fn`
   * is invoked before the original method.
   *
   * @param {object} self
   * @param {string} method
   * @param {function} fn
   */
  hook.before = function(self, method, fn) {
    var original = self[method];
    self[method] = function() {
      fn.apply(self, arguments);
      return original.apply(self, arguments);
    };
  };
  
  /**
   * Wraps `method` on `self` so that `fn`
   * is invoked after the original method.
   *
   * @param {object} self
   * @param {string} method
   * @param {function} fn
   */
  hook.after = function(self, method, fn) {
    var original = self[method];
    self[method] = function() {
      var result = original.apply(self, arguments);
      fn.apply(self, arguments);
      return result;
    };
  };
  
  /**
   * Builds a hash table out of an array of
   * objects, using the specified `key` within
   * each object.
   *
   * @param {string} key
   * @param {mixed} objects
   */
  var build_hash_table = function(key, objects) {
    if (!$.isArray(objects)) return objects;
    var i, n, table = {};
    for (i = 0, n = objects.length; i < n; i++) {
      if (objects[i].hasOwnProperty(key)) {
        table[objects[i][key]] = objects[i];
      }
    }
    return table;
  };
  
  /**
   * Wraps `fn` so that it can only be invoked once.
   *
   * @param {function} fn
   * @returns {function}
   */
  var once = function(fn) {
    var called = false;
    return function() {
      if (called) return;
      called = true;
      fn.apply(this, arguments);
    };
  };
  
  /**
   * Wraps `fn` so that it can only be called once
   * every `delay` milliseconds (invoked on the falling edge).
   *
   * @param {function} fn
   * @param {int} delay
   * @returns {function}
   */
  var debounce = function(fn, delay) {
    var timeout;
    return function() {
      var self = this;
      var args = arguments;
      window.clearTimeout(timeout);
      timeout = window.setTimeout(function() {
        fn.apply(self, args);
      }, delay);
    };
  };
  
  /**
   * Debounce all fired events types listed in `types`
   * while executing the provided `fn`.
   *
   * @param {object} self
   * @param {array} types
   * @param {function} fn
   */
  var debounce_events = function(self, types, fn) {
    var type;
    var trigger = self.trigger;
    var event_args = {};
  
    // override trigger method
    self.trigger = function() {
      var type = arguments[0];
      if (types.indexOf(type) !== -1) {
        event_args[type] = arguments;
      } else {
        return trigger.apply(self, arguments);
      }
    };
  
    // invoke provided function
    fn.apply(self, []);
    self.trigger = trigger;
  
    // trigger queued events
    for (type in event_args) {
      if (event_args.hasOwnProperty(type)) {
        trigger.apply(self, event_args[type]);
      }
    }
  };
  
  /**
   * A workaround for http://bugs.jquery.com/ticket/6696
   *
   * @param {object} $parent - Parent element to listen on.
   * @param {string} event - Event name.
   * @param {string} selector - Descendant selector to filter by.
   * @param {function} fn - Event handler.
   */
  var watchChildEvent = function($parent, event, selector, fn) {
    $parent.on(event, selector, function(e) {
      var child = e.target;
      while (child && child.parentNode !== $parent[0]) {
        child = child.parentNode;
      }
      e.currentTarget = child;
      return fn.apply(this, [e]);
    });
  };
  
  /**
   * Determines the current selection within a text input control.
   * Returns an object containing:
   *   - start
   *   - length
   *
   * @param {object} input
   * @returns {object}
   */
  var getSelection = function(input) {
    var result = {};
    if ('selectionStart' in input) {
      result.start = input.selectionStart;
      result.length = input.selectionEnd - result.start;
    } else if (document.selection) {
      input.focus();
      var sel = document.selection.createRange();
      var selLen = document.selection.createRange().text.length;
      sel.moveStart('character', -input.value.length);
      result.start = sel.text.length - selLen;
      result.length = selLen;
    }
    return result;
  };
  
  /**
   * Copies CSS properties from one element to another.
   *
   * @param {object} $from
   * @param {object} $to
   * @param {array} properties
   */
  var transferStyles = function($from, $to, properties) {
    var i, n, styles = {};
    if (properties) {
      for (i = 0, n = properties.length; i < n; i++) {
        styles[properties[i]] = $from.css(properties[i]);
      }
    } else {
      styles = $from.css();
    }
    $to.css(styles);
  };
  
  /**
   * Measures the width of a string within a
   * parent element (in pixels).
   *
   * @param {string} str
   * @param {object} $parent
   * @returns {int}
   */
  var measureString = function(str, $parent) {
    if (!str) {
      return 0;
    }
    
    var $test = $('<test>').css({
      position: 'absolute',
      top: -99999,
      left: -99999,
      width: 'auto',
      padding: 0,
      whiteSpace: 'pre'
    }).text(str).appendTo('body');
  
    transferStyles($parent, $test, [
      'letterSpacing',
      'fontSize',
      'fontFamily',
      'fontWeight',
      'textTransform'
    ]);
  
    var width = $test.width();
    $test.remove();
  
    return width;
  };
  
  /**
   * Sets up an input to grow horizontally as the user
   * types. If the value is changed manually, you can
   * trigger the "update" handler to resize:
   *
   * $input.trigger('update');
   *
   * @param {object} $input
   */
  var autoGrow = function($input) {
    var currentWidth = null;
    
    var update = function(e) {
      var value, keyCode, printable, placeholder, width;
      var shift, character, selection;
      e = e || window.event || {};
  
      if (e.metaKey || e.altKey) return;
      if ($input.data('grow') === false) return;
  
      value = $input.val();
      if (e.type && e.type.toLowerCase() === 'keydown') {
        keyCode = e.keyCode;
        printable = (
          (keyCode >= 97 && keyCode <= 122) || // a-z
          (keyCode >= 65 && keyCode <= 90)  || // A-Z
          (keyCode >= 48 && keyCode <= 57)  || // 0-9
          keyCode === 32 // space
        );
  
        if (keyCode === KEY_DELETE || keyCode === KEY_BACKSPACE) {
          selection = getSelection($input[0]);
          if (selection.length) {
            value = value.substring(0, selection.start) + value.substring(selection.start + selection.length);
          } else if (keyCode === KEY_BACKSPACE && selection.start) {
            value = value.substring(0, selection.start - 1) + value.substring(selection.start + 1);
          } else if (keyCode === KEY_DELETE && typeof selection.start !== 'undefined') {
            value = value.substring(0, selection.start) + value.substring(selection.start + 1);
          }
        } else if (printable) {
          shift = e.shiftKey;
          character = String.fromCharCode(e.keyCode);
          if (shift) character = character.toUpperCase();
          else character = character.toLowerCase();
          value += character;
        }
      }
  
      placeholder = $input.attr('placeholder') || '';
      if (!value.length && placeholder.length) {
        value = placeholder;
      }
  
      width = measureString(value, $input) + 4;
      if (width !== currentWidth) {
        currentWidth = width;
        $input.width(width);
        $input.triggerHandler('resize');
      }
    };
  
    $input.on('keydown keyup update blur', update);
    update();
  };
  
  var Selectize = function($input, settings) {
    var key, i, n, dir, input, self = this;
    input = $input[0];
    input.selectize = self;
  
    // detect rtl environment
    dir = window.getComputedStyle ? window.getComputedStyle(input, null).getPropertyValue('direction') : input.currentStyle && input.currentStyle.direction;
    dir = dir || $input.parents('[dir]:first').attr('dir') || '';
  
    // setup default state
    $.extend(self, {
      settings         : settings,
      $input           : $input,
      tagType          : input.tagName.toLowerCase() === 'select' ? TAG_SELECT : TAG_INPUT,
      rtl              : /rtl/i.test(dir),
  
      eventNS          : '.selectize' + (++Selectize.count),
      highlightedValue : null,
      isOpen           : false,
      isDisabled       : false,
      isRequired       : $input.is('[required]'),
      isInvalid        : false,
      isLocked         : false,
      isFocused        : false,
      isInputHidden    : false,
      isSetup          : false,
      isShiftDown      : false,
      isCmdDown        : false,
      isCtrlDown       : false,
      ignoreFocus      : false,
      ignoreHover      : false,
      hasOptions       : false,
      currentResults   : null,
      lastValue        : '',
      caretPos         : 0,
      loading          : 0,
      loadedSearches   : {},
  
      $activeOption    : null,
      $activeItems     : [],
  
      optgroups        : {},
      options          : {},
      userOptions      : {},
      items            : [],
      renderCache      : {},
      onSearchChange   : debounce(self.onSearchChange, settings.loadThrottle)
    });
  
    // search system
    self.sifter = new Sifter(this.options, {diacritics: settings.diacritics});
  
    // build options table
    $.extend(self.options, build_hash_table(settings.valueField, settings.options));
    delete self.settings.options;
  
    // build optgroup table
    $.extend(self.optgroups, build_hash_table(settings.optgroupValueField, settings.optgroups));
    delete self.settings.optgroups;
  
    // option-dependent defaults
    self.settings.mode = self.settings.mode || (self.settings.maxItems === 1 ? 'single' : 'multi');
    if (typeof self.settings.hideSelected !== 'boolean') {
      self.settings.hideSelected = self.settings.mode === 'multi';
    }
  
    self.initializePlugins(self.settings.plugins);
    self.setupCallbacks();
    self.setupTemplates();
    self.setup();
  };
  
  // mixins
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  
  MicroEvent.mixin(Selectize);
  MicroPlugin.mixin(Selectize);
  
  // methods
  // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  
  $.extend(Selectize.prototype, {
  
    /**
     * Creates all elements and sets up event bindings.
     */
    setup: function() {
      var self      = this;
      var settings  = self.settings;
      var eventNS   = self.eventNS;
      var $window   = $(window);
      var $document = $(document);
  
      var $wrapper;
      var $control;
      var $control_input;
      var $dropdown;
      var $dropdown_content;
      var $dropdown_parent;
      var inputMode;
      var timeout_blur;
      var timeout_focus;
      var tab_index;
      var classes;
      var classes_plugins;
  
      inputMode         = self.settings.mode;
      tab_index         = self.$input.attr('tabindex') || '';
      classes           = self.$input.attr('class') || '';
  
      $wrapper          = $('<div>').addClass(settings.wrapperClass).addClass(classes).addClass(inputMode);
      $control          = $('<div>').addClass(settings.inputClass).addClass('items').appendTo($wrapper);
      $control_input    = $('<input type="text" autocomplete="off" />').appendTo($control).attr('tabindex', tab_index);
      $dropdown_parent  = $(settings.dropdownParent || $wrapper);
      $dropdown         = $('<div>').addClass(settings.dropdownClass).addClass(classes).addClass(inputMode).hide().appendTo($dropdown_parent);
      $dropdown_content = $('<div>').addClass(settings.dropdownContentClass).appendTo($dropdown);
  
      $wrapper.css({
        width: self.$input[0].style.width
      });
  
      if (self.plugins.names.length) {
        classes_plugins = 'plugin-' + self.plugins.names.join(' plugin-');
        $wrapper.addClass(classes_plugins);
        $dropdown.addClass(classes_plugins);
      }
  
      if ((settings.maxItems === null || settings.maxItems > 1) && self.tagType === TAG_SELECT) {
        self.$input.attr('multiple', 'multiple');
      }
  
      if (self.settings.placeholder) {
        $control_input.attr('placeholder', settings.placeholder);
      }
  
      self.$wrapper          = $wrapper;
      self.$control          = $control;
      self.$control_input    = $control_input;
      self.$dropdown         = $dropdown;
      self.$dropdown_content = $dropdown_content;
  
      $dropdown.on('mouseenter', '[data-selectable]', function() { return self.onOptionHover.apply(self, arguments); });
      $dropdown.on('mousedown', '[data-selectable]', function() { return self.onOptionSelect.apply(self, arguments); });
      watchChildEvent($control, 'mousedown', '*:not(input)', function() { return self.onItemSelect.apply(self, arguments); });
      autoGrow($control_input);
  
      $control.on({
        mousedown : function() { return self.onMouseDown.apply(self, arguments); },
        click     : function() { return self.onClick.apply(self, arguments); }
      });
  
      $control_input.on({
        mousedown : function(e) { e.stopPropagation(); },
        keydown   : function() { return self.onKeyDown.apply(self, arguments); },
        keyup     : function() { return self.onKeyUp.apply(self, arguments); },
        keypress  : function() { return self.onKeyPress.apply(self, arguments); },
        resize    : function() { self.positionDropdown.apply(self, []); },
        blur      : function() { return self.onBlur.apply(self, arguments); },
        focus     : function() { return self.onFocus.apply(self, arguments); }
      });
  
      $document.on('keydown' + eventNS, function(e) {
        self.isCmdDown = e[IS_MAC ? 'metaKey' : 'ctrlKey'];
        self.isCtrlDown = e[IS_MAC ? 'altKey' : 'ctrlKey'];
        self.isShiftDown = e.shiftKey;
      });
  
      $document.on('keyup' + eventNS, function(e) {
        if (e.keyCode === KEY_CTRL) self.isCtrlDown = false;
        if (e.keyCode === KEY_SHIFT) self.isShiftDown = false;
        if (e.keyCode === KEY_CMD) self.isCmdDown = false;
      });
  
      $document.on('mousedown' + eventNS, function(e) {
        if (self.isFocused) {
          // prevent events on the dropdown scrollbar from causing the control to blur
          if (e.target === self.$dropdown[0] || e.target.parentNode === self.$dropdown[0]) {
            return false;
          }
          // blur on click outside
          if (!self.$control.has(e.target).length && e.target !== self.$control[0]) {
            self.blur();
          }
        }
      });
  
      $window.on(['scroll' + eventNS, 'resize' + eventNS].join(' '), function() {
        if (self.isOpen) {
          self.positionDropdown.apply(self, arguments);
        }
      });
      $window.on('mousemove' + eventNS, function() {
        self.ignoreHover = false;
      });
  
      // store original children and tab index so that they can be
      // restored when the destroy() method is called.
      this.revertSettings = {
        $children : self.$input.children().detach(),
        tabindex  : self.$input.attr('tabindex')
      };
  
      self.$input.attr('tabindex', -1).hide().after(self.$wrapper);
  
      if ($.isArray(settings.items)) {
        self.setValue(settings.items);
        delete settings.items;
      }
  
      // feature detect for the validation API
      if (self.$input[0].validity) {
        self.$input.on('invalid' + eventNS, function(e) {
          e.preventDefault();
          self.isInvalid = true;
          self.refreshState();
        });
      }
  
      self.updateOriginalInput();
      self.refreshItems();
      self.refreshState();
      self.updatePlaceholder();
      self.isSetup = true;
  
      if (self.$input.is(':disabled')) {
        self.disable();
      }
  
      self.on('change', this.onChange);
      self.trigger('initialize');
  
      // preload options
      if (settings.preload === true) {
        self.onSearchChange('');
      }
    },
  
    /**
     * Sets up default rendering functions.
     */
    setupTemplates: function() {
      var self = this;
      var field_label = self.settings.labelField;
      var field_optgroup = self.settings.optgroupLabelField;
  
      var templates = {
        'optgroup': function(data) {
          return '<div class="optgroup">' + data.html + '</div>';
        },
        'optgroup_header': function(data, escape) {
          return '<div class="optgroup-header">' + escape(data[field_optgroup]) + '</div>';
        },
        'option': function(data, escape) {
          return '<div class="option">' + escape(data[field_label]) + '</div>';
        },
        'item': function(data, escape) {
          return '<div class="item">' + escape(data[field_label]) + '</div>';
        },
        'option_create': function(data, escape) {
          return '<div class="create">Add <strong>' + escape(data.input) + '</strong>&hellip;</div>';
        }
      };
  
      self.settings.render = $.extend({}, templates, self.settings.render);
    },
  
    /**
     * Maps fired events to callbacks provided
     * in the settings used when creating the control.
     */
    setupCallbacks: function() {
      var key, fn, callbacks = {
        'initialize'     : 'onInitialize',
        'change'         : 'onChange',
        'item_add'       : 'onItemAdd',
        'item_remove'    : 'onItemRemove',
        'clear'          : 'onClear',
        'option_add'     : 'onOptionAdd',
        'option_remove'  : 'onOptionRemove',
        'option_clear'   : 'onOptionClear',
        'dropdown_open'  : 'onDropdownOpen',
        'dropdown_close' : 'onDropdownClose',
        'type'           : 'onType'
      };
  
      for (key in callbacks) {
        if (callbacks.hasOwnProperty(key)) {
          fn = this.settings[callbacks[key]];
          if (fn) this.on(key, fn);
        }
      }
    },
  
    /**
     * Triggered when the main control element
     * has a click event.
     *
     * @param {object} e
     * @return {boolean}
     */
    onClick: function(e) {
      var self = this;
  
      // necessary for mobile webkit devices (manual focus triggering
      // is ignored unless invoked within a click event)
      if (!self.isFocused) {
        self.focus();
        e.preventDefault();
      }
    },
  
    /**
     * Triggered when the main control element
     * has a mouse down event.
     *
     * @param {object} e
     * @return {boolean}
     */
    onMouseDown: function(e) {
      var self = this;
      var defaultPrevented = e.isDefaultPrevented();
      var $target = $(e.target);
  
      if (self.isFocused) {
        // retain focus by preventing native handling. if the
        // event target is the input it should not be modified.
        // otherwise, text selection within the input won't work.
        if (e.target !== self.$control_input[0]) {
          if (self.settings.mode === 'single') {
            // toggle dropdown
            self.isOpen ? self.close() : self.open();
          } else if (!defaultPrevented) {
            self.setActiveItem(null);
          }
          return false;
        }
      } else {
        // give control focus
        if (!defaultPrevented) {
          window.setTimeout(function() {
            self.focus();
          }, 0);
        }
      }
    },
  
    /**
     * Triggered when the value of the control has been changed.
     * This should propagate the event to the original DOM
     * input / select element.
     */
    onChange: function() {
      this.$input.trigger('change');
    },
  
    /**
     * Triggered on <input> keypress.
     *
     * @param {object} e
     * @returns {boolean}
     */
    onKeyPress: function(e) {
      if (this.isLocked) return e && e.preventDefault();
      var character = String.fromCharCode(e.keyCode || e.which);
      if (this.settings.create && character === this.settings.delimiter) {
        this.createItem();
        e.preventDefault();
        return false;
      }
    },
  
    /**
     * Triggered on <input> keydown.
     *
     * @param {object} e
     * @returns {boolean}
     */
    onKeyDown: function(e) {
      var isInput = e.target === this.$control_input[0];
      var self = this;
  
      if (self.isLocked) {
        if (e.keyCode !== KEY_TAB) {
          e.preventDefault();
        }
        return;
      }
  
      switch (e.keyCode) {
        case KEY_A:
          if (self.isCmdDown) {
            self.selectAll();
            return;
          }
          break;
        case KEY_ESC:
          self.close();
          return;
        case KEY_N:
          if (!e.ctrlKey) break;
        case KEY_DOWN:
          if (!self.isOpen && self.hasOptions) {
            self.open();
          } else if (self.$activeOption) {
            self.ignoreHover = true;
            var $next = self.getAdjacentOption(self.$activeOption, 1);
            if ($next.length) self.setActiveOption($next, true, true);
          }
          e.preventDefault();
          return;
        case KEY_P:
          if (!e.ctrlKey) break;
        case KEY_UP:
          if (self.$activeOption) {
            self.ignoreHover = true;
            var $prev = self.getAdjacentOption(self.$activeOption, -1);
            if ($prev.length) self.setActiveOption($prev, true, true);
          }
          e.preventDefault();
          return;
        case KEY_RETURN:
          if (self.isOpen && self.$activeOption) {
            self.onOptionSelect({currentTarget: self.$activeOption});
          }
          e.preventDefault();
          return;
        case KEY_LEFT:
          self.advanceSelection(-1, e);
          return;
        case KEY_RIGHT:
          self.advanceSelection(1, e);
          return;
        case KEY_TAB:
          if (self.isOpen && self.$activeOption) {
            self.onOptionSelect({currentTarget: self.$activeOption});
          }
          if (self.settings.create && self.createItem()) {
            e.preventDefault();
          }
          return;
        case KEY_BACKSPACE:
        case KEY_DELETE:
          self.deleteSelection(e);
          return;
      }
      if (self.isFull() || self.isInputHidden) {
        e.preventDefault();
        return;
      }
    },
  
    /**
     * Triggered on <input> keyup.
     *
     * @param {object} e
     * @returns {boolean}
     */
    onKeyUp: function(e) {
      var self = this;
  
      if (self.isLocked) return e && e.preventDefault();
      var value = self.$control_input.val() || '';
      if (self.lastValue !== value) {
        self.lastValue = value;
        self.onSearchChange(value);
        self.refreshOptions();
        self.trigger('type', value);
      }
    },
  
    /**
     * Invokes the user-provide option provider / loader.
     *
     * Note: this function is debounced in the Selectize
     * constructor (by `settings.loadDelay` milliseconds)
     *
     * @param {string} value
     */
    onSearchChange: function(value) {
      var self = this;
      var fn = self.settings.load;
      if (!fn) return;
      if (self.loadedSearches.hasOwnProperty(value)) return;
      self.loadedSearches[value] = true;
      self.load(function(callback) {
        fn.apply(self, [value, callback]);
      });
    },
  
    /**
     * Triggered on <input> focus.
     *
     * @param {object} e (optional)
     * @returns {boolean}
     */
    onFocus: function(e) {
      var self = this;
  
      self.isFocused = true;
      if (self.isDisabled) {
        self.blur();
        e && e.preventDefault();
        return false;
      }
  
      if (self.ignoreFocus) return;
      if (self.settings.preload === 'focus') self.onSearchChange('');
  
      if (!self.$activeItems.length) {
        self.showInput();
        self.setActiveItem(null);
        self.refreshOptions(!!self.settings.openOnFocus);
      }
  
      self.refreshState();
    },
  
    /**
     * Triggered on <input> blur.
     *
     * @param {object} e
     * @returns {boolean}
     */
    onBlur: function(e) {
      var self = this;
      self.isFocused = false;
      if (self.ignoreFocus) return;
  
      if (self.settings.create && self.settings.createOnBlur) {
        self.createItem(false);
      }
  
      self.close();
      self.setTextboxValue('');
      self.setActiveItem(null);
      self.setActiveOption(null);
      self.setCaret(self.items.length);
      self.refreshState();
    },
  
    /**
     * Triggered when the user rolls over
     * an option in the autocomplete dropdown menu.
     *
     * @param {object} e
     * @returns {boolean}
     */
    onOptionHover: function(e) {
      if (this.ignoreHover) return;
      this.setActiveOption(e.currentTarget, false);
    },
  
    /**
     * Triggered when the user clicks on an option
     * in the autocomplete dropdown menu.
     *
     * @param {object} e
     * @returns {boolean}
     */
    onOptionSelect: function(e) {
      var value, $target, $option, self = this;
  
      if (e.preventDefault) {
        e.preventDefault();
        e.stopPropagation();
      }
  
      $target = $(e.currentTarget);
      if ($target.hasClass('create')) {
        self.createItem();
      } else {
        value = $target.attr('data-value');
        if (value) {
          self.lastQuery = null;
          self.setTextboxValue('');
          self.addItem(value);
          if (!self.settings.hideSelected && e.type && /mouse/.test(e.type)) {
            self.setActiveOption(self.getOption(value));
          }
        }
      }
    },
  
    /**
     * Triggered when the user clicks on an item
     * that has been selected.
     *
     * @param {object} e
     * @returns {boolean}
     */
    onItemSelect: function(e) {
      var self = this;
  
      if (self.isLocked) return;
      if (self.settings.mode === 'multi') {
        e.preventDefault();
        self.setActiveItem(e.currentTarget, e);
      }
    },
  
    /**
     * Invokes the provided method that provides
     * results to a callback---which are then added
     * as options to the control.
     *
     * @param {function} fn
     */
    load: function(fn) {
      var self = this;
      var $wrapper = self.$wrapper.addClass('loading');
  
      self.loading++;
      fn.apply(self, [function(results) {
        self.loading = Math.max(self.loading - 1, 0);
        if (results && results.length) {
          self.addOption(results);
          self.refreshOptions(self.isFocused && !self.isInputHidden);
        }
        if (!self.loading) {
          $wrapper.removeClass('loading');
        }
        self.trigger('load', results);
      }]);
    },
  
    /**
     * Sets the input field of the control to the specified value.
     *
     * @param {string} value
     */
    setTextboxValue: function(value) {
      this.$control_input.val(value).triggerHandler('update');
      this.lastValue = value;
    },
  
    /**
     * Returns the value of the control. If multiple items
     * can be selected (e.g. <select multiple>), this returns
     * an array. If only one item can be selected, this
     * returns a string.
     *
     * @returns {mixed}
     */
    getValue: function() {
      if (this.tagType === TAG_SELECT && this.$input.attr('multiple')) {
        return this.items;
      } else {
        return this.items.join(this.settings.delimiter);
      }
    },
  
    /**
     * Resets the selected items to the given value.
     *
     * @param {mixed} value
     */
    setValue: function(value) {
      debounce_events(this, ['change'], function() {
        this.clear();
        this.addItems(value);
      });
    },
  
    /**
     * Sets the selected item.
     *
     * @param {object} $item
     * @param {object} e (optional)
     */
    setActiveItem: function($item, e) {
      var self = this;
      var eventName;
      var i, idx, begin, end, item, swap;
      var $last;
  
      if (self.settings.mode === 'single') return;
      $item = $($item);
  
      // clear the active selection
      if (!$item.length) {
        $(self.$activeItems).removeClass('active');
        self.$activeItems = [];
        if (self.isFocused) {
          self.showInput();
        }
        return;
      }
  
      // modify selection
      eventName = e && e.type.toLowerCase();
  
      if (eventName === 'mousedown' && self.isShiftDown && self.$activeItems.length) {
        $last = self.$control.children('.active:last');
        begin = Array.prototype.indexOf.apply(self.$control[0].childNodes, [$last[0]]);
        end   = Array.prototype.indexOf.apply(self.$control[0].childNodes, [$item[0]]);
        if (begin > end) {
          swap  = begin;
          begin = end;
          end   = swap;
        }
        for (i = begin; i <= end; i++) {
          item = self.$control[0].childNodes[i];
          if (self.$activeItems.indexOf(item) === -1) {
            $(item).addClass('active');
            self.$activeItems.push(item);
          }
        }
        e.preventDefault();
      } else if ((eventName === 'mousedown' && self.isCtrlDown) || (eventName === 'keydown' && this.isShiftDown)) {
        if ($item.hasClass('active')) {
          idx = self.$activeItems.indexOf($item[0]);
          self.$activeItems.splice(idx, 1);
          $item.removeClass('active');
        } else {
          self.$activeItems.push($item.addClass('active')[0]);
        }
      } else {
        $(self.$activeItems).removeClass('active');
        self.$activeItems = [$item.addClass('active')[0]];
      }
  
      // ensure control has focus
      self.hideInput();
      if (!this.isFocused) {
        self.focus();
      }
    },
  
    /**
     * Sets the selected item in the dropdown menu
     * of available options.
     *
     * @param {object} $object
     * @param {boolean} scroll
     * @param {boolean} animate
     */
    setActiveOption: function($option, scroll, animate) {
      var height_menu, height_item, y;
      var scroll_top, scroll_bottom;
      var self = this;
  
      if (self.$activeOption) self.$activeOption.removeClass('active');
      self.$activeOption = null;
  
      $option = $($option);
      if (!$option.length) return;
  
      self.$activeOption = $option.addClass('active');
  
      if (scroll || !isset(scroll)) {
  
        height_menu   = self.$dropdown_content.height();
        height_item   = self.$activeOption.outerHeight(true);
        scroll        = self.$dropdown_content.scrollTop() || 0;
        y             = self.$activeOption.offset().top - self.$dropdown_content.offset().top + scroll;
        scroll_top    = y;
        scroll_bottom = y - height_menu + height_item;
  
        if (y + height_item > height_menu + scroll) {
          self.$dropdown_content.stop().animate({scrollTop: scroll_bottom}, animate ? self.settings.scrollDuration : 0);
        } else if (y < scroll) {
          self.$dropdown_content.stop().animate({scrollTop: scroll_top}, animate ? self.settings.scrollDuration : 0);
        }
  
      }
    },
  
    /**
     * Selects all items (CTRL + A).
     */
    selectAll: function() {
      var self = this;
      if (self.settings.mode === 'single') return;
  
      self.$activeItems = Array.prototype.slice.apply(self.$control.children(':not(input)').addClass('active'));
      if (self.$activeItems.length) {
        self.hideInput();
        self.close();
      }
      self.focus();
    },
  
    /**
     * Hides the input element out of view, while
     * retaining its focus.
     */
    hideInput: function() {
      var self = this;
  
      self.setTextboxValue('');
      self.$control_input.css({opacity: 0, position: 'absolute', left: self.rtl ? 10000 : -10000});
      self.isInputHidden = true;
    },
  
    /**
     * Restores input visibility.
     */
    showInput: function() {
      this.$control_input.css({opacity: 1, position: 'relative', left: 0});
      this.isInputHidden = false;
    },
  
    /**
     * Gives the control focus. If "trigger" is falsy,
     * focus handlers won't be fired--causing the focus
     * to happen silently in the background.
     *
     * @param {boolean} trigger
     */
    focus: function() {
      var self = this;
      if (self.isDisabled) return;
  
      self.ignoreFocus = true;
      self.$control_input[0].focus();
      window.setTimeout(function() {
        self.ignoreFocus = false;
        self.onFocus();
      }, 0);
    },
  
    /**
     * Forces the control out of focus.
     */
    blur: function() {
      this.$control_input.trigger('blur');
    },
  
    /**
     * Returns a function that scores an object
     * to show how good of a match it is to the
     * provided query.
     *
     * @param {string} query
     * @param {object} options
     * @return {function}
     */
    getScoreFunction: function(query) {
      return this.sifter.getScoreFunction(query, this.getSearchOptions());
    },
  
    /**
     * Returns search options for sifter (the system
     * for scoring and sorting results).
     *
     * @see https://github.com/brianreavis/sifter.js
     * @return {object}
     */
    getSearchOptions: function() {
      var settings = this.settings;
      var sort = settings.sortField;
      if (typeof sort === 'string') {
        sort = {field: sort};
      }
  
      return {
        fields      : settings.searchField,
        conjunction : settings.searchConjunction,
        sort        : sort
      };
    },
  
    /**
     * Searches through available options and returns
     * a sorted array of matches.
     *
     * Returns an object containing:
     *
     *   - query {string}
     *   - tokens {array}
     *   - total {int}
     *   - items {array}
     *
     * @param {string} query
     * @returns {object}
     */
    search: function(query) {
      var i, value, score, result, calculateScore;
      var self     = this;
      var settings = self.settings;
      var options  = this.getSearchOptions();
  
      // validate user-provided result scoring function
      if (settings.score) {
        calculateScore = self.settings.score.apply(this, [query]);
        if (typeof calculateScore !== 'function') {
          throw new Error('Selectize "score" setting must be a function that returns a function');
        }
      }
  
      // perform search
      if (query !== self.lastQuery) {
        self.lastQuery = query;
        result = self.sifter.search(query, $.extend(options, {score: calculateScore}));
        self.currentResults = result;
      } else {
        result = $.extend(true, {}, self.currentResults);
      }
  
      // filter out selected items
      if (settings.hideSelected) {
        for (i = result.items.length - 1; i >= 0; i--) {
          if (self.items.indexOf(hash_key(result.items[i].id)) !== -1) {
            result.items.splice(i, 1);
          }
        }
      }
  
      return result;
    },
  
    /**
     * Refreshes the list of available options shown
     * in the autocomplete dropdown menu.
     *
     * @param {boolean} triggerDropdown
     */
    refreshOptions: function(triggerDropdown) {
      var i, j, k, n, groups, groups_order, option, option_html, optgroup, optgroups, html, html_children, has_create_option;
      var $active, $active_before, $create;
  
      if (typeof triggerDropdown === 'undefined') {
        triggerDropdown = true;
      }
  
      var self              = this;
      var query             = self.$control_input.val();
      var results           = self.search(query);
      var $dropdown_content = self.$dropdown_content;
      var active_before     = self.$activeOption && hash_key(self.$activeOption.attr('data-value'));
  
      // build markup
      n = results.items.length;
      if (typeof self.settings.maxOptions === 'number') {
        n = Math.min(n, self.settings.maxOptions);
      }
  
      // render and group available options individually
      groups = {};
  
      if (self.settings.optgroupOrder) {
        groups_order = self.settings.optgroupOrder;
        for (i = 0; i < groups_order.length; i++) {
          groups[groups_order[i]] = [];
        }
      } else {
        groups_order = [];
      }
  
      for (i = 0; i < n; i++) {
        option      = self.options[results.items[i].id];
        option_html = self.render('option', option);
        optgroup    = option[self.settings.optgroupField] || '';
        optgroups   = $.isArray(optgroup) ? optgroup : [optgroup];
  
        for (j = 0, k = optgroups && optgroups.length; j < k; j++) {
          optgroup = optgroups[j];
          if (!self.optgroups.hasOwnProperty(optgroup)) {
            optgroup = '';
          }
          if (!groups.hasOwnProperty(optgroup)) {
            groups[optgroup] = [];
            groups_order.push(optgroup);
          }
          groups[optgroup].push(option_html);
        }
      }
  
      // render optgroup headers & join groups
      html = [];
      for (i = 0, n = groups_order.length; i < n; i++) {
        optgroup = groups_order[i];
        if (self.optgroups.hasOwnProperty(optgroup) && groups[optgroup].length) {
          // render the optgroup header and options within it,
          // then pass it to the wrapper template
          html_children = self.render('optgroup_header', self.optgroups[optgroup]) || '';
          html_children += groups[optgroup].join('');
          html.push(self.render('optgroup', $.extend({}, self.optgroups[optgroup], {
            html: html_children
          })));
        } else {
          html.push(groups[optgroup].join(''));
        }
      }
  
      $dropdown_content.html(html.join(''));
  
      // highlight matching terms inline
      if (self.settings.highlight && results.query.length && results.tokens.length) {
        for (i = 0, n = results.tokens.length; i < n; i++) {
          highlight($dropdown_content, results.tokens[i].regex);
        }
      }
  
      // add "selected" class to selected options
      if (!self.settings.hideSelected) {
        for (i = 0, n = self.items.length; i < n; i++) {
          self.getOption(self.items[i]).addClass('selected');
        }
      }
  
      // add create option
      has_create_option = self.settings.create && results.query.length;
      if (has_create_option) {
        $dropdown_content.prepend(self.render('option_create', {input: query}));
        $create = $($dropdown_content[0].childNodes[0]);
      }
  
      // activate
      self.hasOptions = results.items.length > 0 || has_create_option;
      if (self.hasOptions) {
        if (results.items.length > 0) {
          $active_before = active_before && self.getOption(active_before);
          if ($active_before && $active_before.length) {
            $active = $active_before;
          } else if (self.settings.mode === 'single' && self.items.length) {
            $active = self.getOption(self.items[0]);
          }
          if (!$active || !$active.length) {
            if ($create && !self.settings.addPrecedence) {
              $active = self.getAdjacentOption($create, 1);
            } else {
              $active = $dropdown_content.find('[data-selectable]:first');
            }
          }
        } else {
          $active = $create;
        }
        self.setActiveOption($active);
        if (triggerDropdown && !self.isOpen) { self.open(); }
      } else {
        self.setActiveOption(null);
        if (triggerDropdown && self.isOpen) { self.close(); }
      }
    },
  
    /**
     * Adds an available option. If it already exists,
     * nothing will happen. Note: this does not refresh
     * the options list dropdown (use `refreshOptions`
     * for that).
     *
     * Usage:
     *
     *   this.addOption(data)
     *
     * @param {object} data
     */
    addOption: function(data) {
      var i, n, optgroup, value, self = this;
  
      if ($.isArray(data)) {
        for (i = 0, n = data.length; i < n; i++) {
          self.addOption(data[i]);
        }
        return;
      }
  
      value = hash_key(data[self.settings.valueField]);
      if (!value || self.options.hasOwnProperty(value)) return;
  
      self.userOptions[value] = true;
      self.options[value] = data;
      self.lastQuery = null;
      self.trigger('option_add', value, data);
    },
  
    /**
     * Registers a new optgroup for options
     * to be bucketed into.
     *
     * @param {string} id
     * @param {object} data
     */
    addOptionGroup: function(id, data) {
      this.optgroups[id] = data;
      this.trigger('optgroup_add', id, data);
    },
  
    /**
     * Updates an option available for selection. If
     * it is visible in the selected items or options
     * dropdown, it will be re-rendered automatically.
     *
     * @param {string} value
     * @param {object} data
     */
    updateOption: function(value, data) {
      var self = this;
      var $item, $item_new;
      var value_new, index_item, cache_items, cache_options;
  
      value     = hash_key(value);
      value_new = hash_key(data[self.settings.valueField]);
  
      // sanity checks
      if (!self.options.hasOwnProperty(value)) return;
      if (!value_new) throw new Error('Value must be set in option data');
  
      // update references
      if (value_new !== value) {
        delete self.options[value];
        index_item = self.items.indexOf(value);
        if (index_item !== -1) {
          self.items.splice(index_item, 1, value_new);
        }
      }
      self.options[value_new] = data;
  
      // invalidate render cache
      cache_items = self.renderCache['item'];
      cache_options = self.renderCache['option'];
  
      if (isset(cache_items)) {
        delete cache_items[value];
        delete cache_items[value_new];
      }
      if (isset(cache_options)) {
        delete cache_options[value];
        delete cache_options[value_new];
      }
  
      // update the item if it's selected
      if (self.items.indexOf(value_new) !== -1) {
        $item = self.getItem(value);
        $item_new = $(self.render('item', data));
        if ($item.hasClass('active')) $item_new.addClass('active');
        $item.replaceWith($item_new);
      }
  
      // update dropdown contents
      if (self.isOpen) {
        self.refreshOptions(false);
      }
    },
  
    /**
     * Removes a single option.
     *
     * @param {string} value
     */
    removeOption: function(value) {
      var self = this;
  
      value = hash_key(value);
      delete self.userOptions[value];
      delete self.options[value];
      self.lastQuery = null;
      self.trigger('option_remove', value);
      self.removeItem(value);
    },
  
    /**
     * Clears all options.
     */
    clearOptions: function() {
      var self = this;
  
      self.loadedSearches = {};
      self.userOptions = {};
      self.options = self.sifter.items = {};
      self.lastQuery = null;
      self.trigger('option_clear');
      self.clear();
    },
  
    /**
     * Returns the jQuery element of the option
     * matching the given value.
     *
     * @param {string} value
     * @returns {object}
     */
    getOption: function(value) {
      return this.getElementWithValue(value, this.$dropdown_content.find('[data-selectable]'));
    },
  
    /**
     * Returns the jQuery element of the next or
     * previous selectable option.
     *
     * @param {object} $option
     * @param {int} direction  can be 1 for next or -1 for previous
     * @return {object}
     */
    getAdjacentOption: function($option, direction) {
      var $options = this.$dropdown.find('[data-selectable]');
      var index    = $options.index($option) + direction;
  
      return index >= 0 && index < $options.length ? $options.eq(index) : $();
    },
  
    /**
     * Finds the first element with a "data-value" attribute
     * that matches the given value.
     *
     * @param {mixed} value
     * @param {object} $els
     * @return {object}
     */
    getElementWithValue: function(value, $els) {
      value = hash_key(value);
  
      if (value) {
        for (var i = 0, n = $els.length; i < n; i++) {
          if ($els[i].getAttribute('data-value') === value) {
            return $($els[i]);
          }
        }
      }
  
      return $();
    },
  
    /**
     * Returns the jQuery element of the item
     * matching the given value.
     *
     * @param {string} value
     * @returns {object}
     */
    getItem: function(value) {
      return this.getElementWithValue(value, this.$control.children());
    },
  
    /**
     * "Selects" multiple items at once. Adds them to the list
     * at the current caret position.
     *
     * @param {string} value
     */
    addItems: function(values) {
      var items = $.isArray(values) ? values : [values];
      for (var i = 0, n = items.length; i < n; i++) {
        this.isPending = (i < n - 1);
        this.addItem(items[i]);
      }
    },
  
    /**
     * "Selects" an item. Adds it to the list
     * at the current caret position.
     *
     * @param {string} value
     */
    addItem: function(value) {
      debounce_events(this, ['change'], function() {
        var $item, $option, $options;
        var self = this;
        var inputMode = self.settings.mode;
        var i, active, value_next;
        value = hash_key(value);
  
        if (self.items.indexOf(value) !== -1) {
          if (inputMode === 'single') self.close();
          return;
        }
  
        if (!self.options.hasOwnProperty(value)) return;
        if (inputMode === 'single') self.clear();
        if (inputMode === 'multi' && self.isFull()) return;
  
        $item = $(self.render('item', self.options[value]));
        self.items.splice(self.caretPos, 0, value);
        self.insertAtCaret($item);
        self.refreshState();
  
        if (self.isSetup) {
          $options = self.$dropdown_content.find('[data-selectable]');
  
          // update menu / remove the option (if this is not one item being added as part of series)
          if (!this.isPending) {
            $option = self.getOption(value);
            value_next = self.getAdjacentOption($option, 1).attr('data-value');
            self.refreshOptions(self.isFocused && inputMode !== 'single');
            if (value_next) {
              self.setActiveOption(self.getOption(value_next));
            }
          }
  
          // hide the menu if the maximum number of items have been selected or no options are left
          if (!$options.length || (self.settings.maxItems !== null && self.items.length >= self.settings.maxItems)) {
            self.close();
          } else {
            self.positionDropdown();
          }
  
          self.updatePlaceholder();
          self.trigger('item_add', value, $item);
          self.updateOriginalInput();
        }
      });
    },
  
    /**
     * Removes the selected item matching
     * the provided value.
     *
     * @param {string} value
     */
    removeItem: function(value) {
      var self = this;
      var $item, i, idx;
  
      $item = (typeof value === 'object') ? value : self.getItem(value);
      value = hash_key($item.attr('data-value'));
      i = self.items.indexOf(value);
  
      if (i !== -1) {
        $item.remove();
        if ($item.hasClass('active')) {
          idx = self.$activeItems.indexOf($item[0]);
          self.$activeItems.splice(idx, 1);
        }
  
        self.items.splice(i, 1);
        self.lastQuery = null;
        if (!self.settings.persist && self.userOptions.hasOwnProperty(value)) {
          self.removeOption(value);
        }
  
        if (i < self.caretPos) {
          self.setCaret(self.caretPos - 1);
        }
  
        self.refreshState();
        self.updatePlaceholder();
        self.updateOriginalInput();
        self.positionDropdown();
        self.trigger('item_remove', value);
      }
    },
  
    /**
     * Invokes the `create` method provided in the
     * selectize options that should provide the data
     * for the new item, given the user input.
     *
     * Once this completes, it will be added
     * to the item list.
     *
     * @return {boolean}
     */
    createItem: function(triggerDropdown) {
      var self  = this;
      var input = $.trim(self.$control_input.val() || '');
      var caret = self.caretPos;
      if (!input.length) return false;
      self.lock();
  
      if (typeof triggerDropdown === 'undefined') {
        triggerDropdown = true;
      }
  
      var setup = (typeof self.settings.create === 'function') ? this.settings.create : function(input) {
        var data = {};
        data[self.settings.labelField] = input;
        data[self.settings.valueField] = input;
        return data;
      };
  
      var create = once(function(data) {
        self.unlock();
  
        if (!data || typeof data !== 'object') return;
        var value = hash_key(data[self.settings.valueField]);
        if (!value) return;
  
        self.setTextboxValue('');
        self.addOption(data);
        self.setCaret(caret);
        self.addItem(value);
        self.refreshOptions(triggerDropdown && self.settings.mode !== 'single');
      });
  
      var output = setup.apply(this, [input, create]);
      if (typeof output !== 'undefined') {
        create(output);
      }
  
      return true;
    },
  
    /**
     * Re-renders the selected item lists.
     */
    refreshItems: function() {
      this.lastQuery = null;
  
      if (this.isSetup) {
        for (var i = 0; i < this.items.length; i++) {
          this.addItem(this.items);
        }
      }
  
      this.refreshState();
      this.updateOriginalInput();
    },
  
    /**
     * Updates all state-dependent attributes
     * and CSS classes.
     */
    refreshState: function() {
      var self = this;
      var invalid = self.isRequired && !self.items.length;
      if (!invalid) self.isInvalid = false;
      self.$control_input.prop('required', invalid);
      self.refreshClasses();
    },
  
    /**
     * Updates all state-dependent CSS classes.
     */
    refreshClasses: function() {
      var self     = this;
      var isFull   = self.isFull();
      var isLocked = self.isLocked;
  
      self.$wrapper
        .toggleClass('rtl', self.rtl);
  
      self.$control
        .toggleClass('focus', self.isFocused)
        .toggleClass('disabled', self.isDisabled)
        .toggleClass('required', self.isRequired)
        .toggleClass('invalid', self.isInvalid)
        .toggleClass('locked', isLocked)
        .toggleClass('full', isFull).toggleClass('not-full', !isFull)
        .toggleClass('input-active', self.isFocused && !self.isInputHidden)
        .toggleClass('dropdown-active', self.isOpen)
        .toggleClass('has-options', !$.isEmptyObject(self.options))
        .toggleClass('has-items', self.items.length > 0);
  
      self.$control_input.data('grow', !isFull && !isLocked);
    },
  
    /**
     * Determines whether or not more items can be added
     * to the control without exceeding the user-defined maximum.
     *
     * @returns {boolean}
     */
    isFull: function() {
      return this.settings.maxItems !== null && this.items.length >= this.settings.maxItems;
    },
  
    /**
     * Refreshes the original <select> or <input>
     * element to reflect the current state.
     */
    updateOriginalInput: function() {
      var i, n, options, self = this;
  
      if (self.$input[0].tagName.toLowerCase() === 'select') {
        options = [];
        for (i = 0, n = self.items.length; i < n; i++) {
          options.push('<option value="' + escape_html(self.items[i]) + '" selected="selected"></option>');
        }
        if (!options.length && !this.$input.attr('multiple')) {
          options.push('<option value="" selected="selected"></option>');
        }
        self.$input.html(options.join(''));
      } else {
        self.$input.val(self.getValue());
      }
  
      if (self.isSetup) {
        self.trigger('change', self.$input.val());
      }
    },
  
    /**
     * Shows/hide the input placeholder depending
     * on if there items in the list already.
     */
    updatePlaceholder: function() {
      if (!this.settings.placeholder) return;
      var $input = this.$control_input;
  
      if (this.items.length) {
        $input.removeAttr('placeholder');
      } else {
        $input.attr('placeholder', this.settings.placeholder);
      }
      $input.triggerHandler('update');
    },
  
    /**
     * Shows the autocomplete dropdown containing
     * the available options.
     */
    open: function() {
      var self = this;
  
      if (self.isLocked || self.isOpen || (self.settings.mode === 'multi' && self.isFull())) return;
      self.focus();
      self.isOpen = true;
      self.refreshState();
      self.$dropdown.css({visibility: 'hidden', display: 'block'});
      self.positionDropdown();
      self.$dropdown.css({visibility: 'visible'});
      self.trigger('dropdown_open', self.$dropdown);
    },
  
    /**
     * Closes the autocomplete dropdown menu.
     */
    close: function() {
      var self = this;
      var trigger = self.isOpen;
  
      if (self.settings.mode === 'single' && self.items.length) {
        self.hideInput();
      }
  
      self.isOpen = false;
      self.$dropdown.hide();
      self.setActiveOption(null);
      self.refreshState();
  
      if (trigger) self.trigger('dropdown_close', self.$dropdown);
    },
  
    /**
     * Calculates and applies the appropriate
     * position of the dropdown.
     */
    positionDropdown: function() {
      var $control = this.$control;
      var offset = this.settings.dropdownParent === 'body' ? $control.offset() : $control.position();
      offset.top += $control.outerHeight(true);
  
      this.$dropdown.css({
        width : $control.outerWidth(),
        top   : offset.top,
        left  : offset.left
      });
    },
  
    /**
     * Resets / clears all selected items
     * from the control.
     */
    clear: function() {
      var self = this;
  
      if (!self.items.length) return;
      self.$control.children(':not(input)').remove();
      self.items = [];
      self.setCaret(0);
      self.updatePlaceholder();
      self.updateOriginalInput();
      self.refreshState();
      self.showInput();
      self.trigger('clear');
    },
  
    /**
     * A helper method for inserting an element
     * at the current caret position.
     *
     * @param {object} $el
     */
    insertAtCaret: function($el) {
      var caret = Math.min(this.caretPos, this.items.length);
      if (caret === 0) {
        this.$control.prepend($el);
      } else {
        $(this.$control[0].childNodes[caret]).before($el);
      }
      this.setCaret(caret + 1);
    },
  
    /**
     * Removes the current selected item(s).
     *
     * @param {object} e (optional)
     * @returns {boolean}
     */
    deleteSelection: function(e) {
      var i, n, direction, selection, values, caret, option_select, $option_select, $tail;
      var self = this;
  
      direction = (e && e.keyCode === KEY_BACKSPACE) ? -1 : 1;
      selection = getSelection(self.$control_input[0]);
  
      if (self.$activeOption && !self.settings.hideSelected) {
        option_select = self.getAdjacentOption(self.$activeOption, -1).attr('data-value');
      }
  
      // determine items that will be removed
      values = [];
  
      if (self.$activeItems.length) {
        $tail = self.$control.children('.active:' + (direction > 0 ? 'last' : 'first'));
        caret = self.$control.children(':not(input)').index($tail);
        if (direction > 0) { caret++; }
  
        for (i = 0, n = self.$activeItems.length; i < n; i++) {
          values.push($(self.$activeItems[i]).attr('data-value'));
        }
        if (e) {
          e.preventDefault();
          e.stopPropagation();
        }
      } else if ((self.isFocused || self.settings.mode === 'single') && self.items.length) {
        if (direction < 0 && selection.start === 0 && selection.length === 0) {
          values.push(self.items[self.caretPos - 1]);
        } else if (direction > 0 && selection.start === self.$control_input.val().length) {
          values.push(self.items[self.caretPos]);
        }
      }
  
      // allow the callback to abort
      if (!values.length || (typeof self.settings.onDelete === 'function' && self.settings.onDelete.apply(self, [values]) === false)) {
        return false;
      }
  
      // perform removal
      if (typeof caret !== 'undefined') {
        self.setCaret(caret);
      }
      while (values.length) {
        self.removeItem(values.pop());
      }
  
      self.showInput();
      self.positionDropdown();
      self.refreshOptions(true);
  
      // select previous option
      if (option_select) {
        $option_select = self.getOption(option_select);
        if ($option_select.length) {
          self.setActiveOption($option_select);
        }
      }
  
      return true;
    },
  
    /**
     * Selects the previous / next item (depending
     * on the `direction` argument).
     *
     * > 0 - right
     * < 0 - left
     *
     * @param {int} direction
     * @param {object} e (optional)
     */
    advanceSelection: function(direction, e) {
      var tail, selection, idx, valueLength, cursorAtEdge, $tail;
      var self = this;
  
      if (direction === 0) return;
      if (self.rtl) direction *= -1;
  
      tail = direction > 0 ? 'last' : 'first';
      selection = getSelection(self.$control_input[0]);
  
      if (self.isFocused && !self.isInputHidden) {
        valueLength = self.$control_input.val().length;
        cursorAtEdge = direction < 0
          ? selection.start === 0 && selection.length === 0
          : selection.start === valueLength;
  
        if (cursorAtEdge && !valueLength) {
          self.advanceCaret(direction, e);
        }
      } else {
        $tail = self.$control.children('.active:' + tail);
        if ($tail.length) {
          idx = self.$control.children(':not(input)').index($tail);
          self.setActiveItem(null);
          self.setCaret(direction > 0 ? idx + 1 : idx);
        }
      }
    },
  
    /**
     * Moves the caret left / right.
     *
     * @param {int} direction
     * @param {object} e (optional)
     */
    advanceCaret: function(direction, e) {
      var self = this, fn, $adj;
  
      if (direction === 0) return;
  
      fn = direction > 0 ? 'next' : 'prev';
      if (self.isShiftDown) {
        $adj = self.$control_input[fn]();
        if ($adj.length) {
          self.hideInput();
          self.setActiveItem($adj);
          e && e.preventDefault();
        }
      } else {
        self.setCaret(self.caretPos + direction);
      }
    },
  
    /**
     * Moves the caret to the specified index.
     *
     * @param {int} i
     */
    setCaret: function(i) {
      var self = this;
  
      if (self.settings.mode === 'single') {
        i = self.items.length;
      } else {
        i = Math.max(0, Math.min(self.items.length, i));
      }
  
      // the input must be moved by leaving it in place and moving the
      // siblings, due to the fact that focus cannot be restored once lost
      // on mobile webkit devices
      var j, n, fn, $children, $child;
      $children = self.$control.children(':not(input)');
      for (j = 0, n = $children.length; j < n; j++) {
        $child = $($children[j]).detach();
        if (j <  i) {
          self.$control_input.before($child);
        } else {
          self.$control.append($child);
        }
      }
  
      self.caretPos = i;
    },
  
    /**
     * Disables user input on the control. Used while
     * items are being asynchronously created.
     */
    lock: function() {
      this.close();
      this.isLocked = true;
      this.refreshState();
    },
  
    /**
     * Re-enables user input on the control.
     */
    unlock: function() {
      this.isLocked = false;
      this.refreshState();
    },
  
    /**
     * Disables user input on the control completely.
     * While disabled, it cannot receive focus.
     */
    disable: function() {
      var self = this;
      self.$input.prop('disabled', true);
      self.isDisabled = true;
      self.lock();
    },
  
    /**
     * Enables the control so that it can respond
     * to focus and user input.
     */
    enable: function() {
      var self = this;
      self.$input.prop('disabled', false);
      self.isDisabled = false;
      self.unlock();
    },
  
    /**
     * Completely destroys the control and
     * unbinds all event listeners so that it can
     * be garbage collected.
     */
    destroy: function() {
      var self = this;
      var eventNS = self.eventNS;
      var revertSettings = self.revertSettings;
  
      self.trigger('destroy');
      self.off();
      self.$wrapper.remove();
      self.$dropdown.remove();
  
      self.$input
        .html('')
        .append(revertSettings.$children)
        .removeAttr('tabindex')
        .attr({tabindex: revertSettings.tabindex})
        .show();
  
      $(window).off(eventNS);
      $(document).off(eventNS);
      $(document.body).off(eventNS);
  
      delete self.$input[0].selectize;
    },
  
    /**
     * A helper method for rendering "item" and
     * "option" templates, given the data.
     *
     * @param {string} templateName
     * @param {object} data
     * @returns {string}
     */
    render: function(templateName, data) {
      var value, id, label;
      var html = '';
      var cache = false;
      var self = this;
      var regex_tag = /^[\t ]*<([a-z][a-z0-9\-_]*(?:\:[a-z][a-z0-9\-_]*)?)/i;
  
      if (templateName === 'option' || templateName === 'item') {
        value = hash_key(data[self.settings.valueField]);
        cache = !!value;
      }
  
      // pull markup from cache if it exists
      if (cache) {
        if (!isset(self.renderCache[templateName])) {
          self.renderCache[templateName] = {};
        }
        if (self.renderCache[templateName].hasOwnProperty(value)) {
          return self.renderCache[templateName][value];
        }
      }
  
      // render markup
      html = self.settings.render[templateName].apply(this, [data, escape_html]);
  
      // add mandatory attributes
      if (templateName === 'option' || templateName === 'option_create') {
        html = html.replace(regex_tag, '<$1 data-selectable');
      }
      if (templateName === 'optgroup') {
        id = data[self.settings.optgroupValueField] || '';
        html = html.replace(regex_tag, '<$1 data-group="' + escape_replace(escape_html(id)) + '"');
      }
      if (templateName === 'option' || templateName === 'item') {
        html = html.replace(regex_tag, '<$1 data-value="' + escape_replace(escape_html(value || '')) + '"');
      }
  
      // update cache
      if (cache) {
        self.renderCache[templateName][value] = html;
      }
  
      return html;
    }
  
  });
  
  
  Selectize.count = 0;
  Selectize.defaults = {
    plugins: [],
    delimiter: ',',
    persist: true,
    diacritics: true,
    create: false,
    createOnBlur: false,
    highlight: true,
    openOnFocus: true,
    maxOptions: 1000,
    maxItems: null,
    hideSelected: null,
    addPrecedence: false,
    preload: false,
  
    scrollDuration: 60,
    loadThrottle: 300,
  
    dataAttr: 'data-data',
    optgroupField: 'optgroup',
    valueField: 'value',
    labelField: 'text',
    optgroupLabelField: 'label',
    optgroupValueField: 'value',
    optgroupOrder: null,
  
    sortField: '$order',
    searchField: ['text'],
    searchConjunction: 'and',
  
    mode: null,
    wrapperClass: 'selectize-control',
    inputClass: 'selectize-input',
    dropdownClass: 'selectize-dropdown',
    dropdownContentClass: 'selectize-dropdown-content',
  
    dropdownParent: null,
  
    /*
    load            : null, // function(query, callback) { ... }
    score           : null, // function(search) { ... }
    onInitialize    : null, // function() { ... }
    onChange        : null, // function(value) { ... }
    onItemAdd       : null, // function(value, $item) { ... }
    onItemRemove    : null, // function(value) { ... }
    onClear         : null, // function() { ... }
    onOptionAdd     : null, // function(value, data) { ... }
    onOptionRemove  : null, // function(value) { ... }
    onOptionClear   : null, // function() { ... }
    onDropdownOpen  : null, // function($dropdown) { ... }
    onDropdownClose : null, // function($dropdown) { ... }
    onType          : null, // function(str) { ... }
    onDelete        : null, // function(values) { ... }
    */
  
    render: {
      /*
      item: null,
      optgroup: null,
      optgroup_header: null,
      option: null,
      option_create: null
      */
    }
  };
  
  $.fn.selectize = function(settings_user) {
    var defaults             = $.fn.selectize.defaults;
    var settings             = $.extend({}, defaults, settings_user);
    var attr_data            = settings.dataAttr;
    var field_label          = settings.labelField;
    var field_value          = settings.valueField;
    var field_optgroup       = settings.optgroupField;
    var field_optgroup_label = settings.optgroupLabelField;
    var field_optgroup_value = settings.optgroupValueField;
  
    /**
     * Initializes selectize from a <input type="text"> element.
     *
     * @param {object} $input
     * @param {object} settings_element
     */
    var init_textbox = function($input, settings_element) {
      var i, n, values, option, value = $.trim($input.val() || '');
      if (!value.length) return;
  
      values = value.split(settings.delimiter);
      for (i = 0, n = values.length; i < n; i++) {
        option = {};
        option[field_label] = values[i];
        option[field_value] = values[i];
  
        settings_element.options[values[i]] = option;
      }
  
      settings_element.items = values;
    };
  
    /**
     * Initializes selectize from a <select> element.
     *
     * @param {object} $input
     * @param {object} settings_element
     */
    var init_select = function($input, settings_element) {
      var i, n, tagName, $children, order = 0;
      var options = settings_element.options;
  
      var readData = function($el) {
        var data = attr_data && $el.attr(attr_data);
        if (typeof data === 'string' && data.length) {
          return JSON.parse(data);
        }
        return null;
      };
  
      var addOption = function($option, group) {
        var value, option;
  
        $option = $($option);
  
        value = $option.attr('value') || '';
        if (!value.length) return;
  
        // if the option already exists, it's probably been
        // duplicated in another optgroup. in this case, push
        // the current group to the "optgroup" property on the
        // existing option so that it's rendered in both places.
        if (options.hasOwnProperty(value)) {
          if (group) {
            if (!options[value].optgroup) {
              options[value].optgroup = group;
            } else if (!$.isArray(options[value].optgroup)) {
              options[value].optgroup = [options[value].optgroup, group];
            } else {
              options[value].optgroup.push(group);
            }
          }
          return;
        }
  
        option                 = readData($option) || {};
        option[field_label]    = option[field_label] || $option.text();
        option[field_value]    = option[field_value] || value;
        option[field_optgroup] = option[field_optgroup] || group;
  
        option.$order = ++order;
        options[value] = option;
  
        if ($option.is(':selected')) {
          settings_element.items.push(value);
        }
      };
  
      var addGroup = function($optgroup) {
        var i, n, id, optgroup, $options;
  
        $optgroup = $($optgroup);
        id = $optgroup.attr('label');
  
        if (id) {
          optgroup = readData($optgroup) || {};
          optgroup[field_optgroup_label] = id;
          optgroup[field_optgroup_value] = id;
          settings_element.optgroups[id] = optgroup;
        }
  
        $options = $('option', $optgroup);
        for (i = 0, n = $options.length; i < n; i++) {
          addOption($options[i], id);
        }
      };
  
      settings_element.maxItems = $input.attr('multiple') ? null : 1;
  
      $children = $input.children();
      for (i = 0, n = $children.length; i < n; i++) {
        tagName = $children[i].tagName.toLowerCase();
        if (tagName === 'optgroup') {
          addGroup($children[i]);
        } else if (tagName === 'option') {
          addOption($children[i]);
        }
      }
    };
  
    return this.each(function() {
      if (this.selectize) return;
  
      var instance;
      var $input = $(this);
      var tag_name = this.tagName.toLowerCase();
      var settings_element = {
        'placeholder' : $input.children('option[value=""]').text() || $input.attr('placeholder'),
        'options'     : {},
        'optgroups'   : {},
        'items'       : []
      };
  
      if (tag_name === 'select') {
        init_select($input, settings_element);
      } else {
        init_textbox($input, settings_element);
      }
  
      instance = new Selectize($input, $.extend(true, {}, defaults, settings_element, settings_user));
      $input.data('selectize', instance);
      $input.addClass('selectized');
    });
  };
  
  $.fn.selectize.defaults = Selectize.defaults;
  
  Selectize.define('drag_drop', function(options) {
    if (!$.fn.sortable) throw new Error('The "drag_drop" plugin requires jQuery UI "sortable".');
    if (this.settings.mode !== 'multi') return;
    var self = this;
  
    self.lock = (function() {
      var original = self.lock;
      return function() {
        var sortable = self.$control.data('sortable');
        if (sortable) sortable.disable();
        return original.apply(self, arguments);
      };
    })();
  
    self.unlock = (function() {
      var original = self.unlock;
      return function() {
        var sortable = self.$control.data('sortable');
        if (sortable) sortable.enable();
        return original.apply(self, arguments);
      };
    })();
  
    self.setup = (function() {
      var original = self.setup;
      return function() {
        original.apply(this, arguments);
  
        var $control = self.$control.sortable({
          items: '[data-value]',
          forcePlaceholderSize: true,
          disabled: self.isLocked,
          start: function(e, ui) {
            ui.placeholder.css('width', ui.helper.css('width'));
            $control.css({overflow: 'visible'});
          },
          stop: function() {
            $control.css({overflow: 'hidden'});
            var active = self.$activeItems ? self.$activeItems.slice() : null;
            var values = [];
            $control.children('[data-value]').each(function() {
              values.push($(this).attr('data-value'));
            });
            self.setValue(values);
            self.setActiveItem(active);
          }
        });
      };
    })();
  
  });
  
  Selectize.define('dropdown_header', function(options) {
    var self = this;
  
    options = $.extend({
      title         : 'Untitled',
      headerClass   : 'selectize-dropdown-header',
      titleRowClass : 'selectize-dropdown-header-title',
      labelClass    : 'selectize-dropdown-header-label',
      closeClass    : 'selectize-dropdown-header-close',
  
      html: function(data) {
        return (
          '<div class="' + data.headerClass + '">' +
            '<div class="' + data.titleRowClass + '">' +
              '<span class="' + data.labelClass + '">' + data.title + '</span>' +
              '<a href="javascript:void(0)" class="' + data.closeClass + '">&times;</a>' +
            '</div>' +
          '</div>'
        );
      }
    }, options);
  
    self.setup = (function() {
      var original = self.setup;
      return function() {
        original.apply(self, arguments);
        self.$dropdown_header = $(options.html(options));
        self.$dropdown.prepend(self.$dropdown_header);
      };
    })();
  
  });
  
  Selectize.define('optgroup_columns', function(options) {
    var self = this;
  
    options = $.extend({
      equalizeWidth  : true,
      equalizeHeight : true
    }, options);
  
    this.getAdjacentOption = function($option, direction) {
      var $options = $option.closest('[data-group]').find('[data-selectable]');
      var index    = $options.index($option) + direction;
  
      return index >= 0 && index < $options.length ? $options.eq(index) : $();
    };
  
    this.onKeyDown = (function() {
      var original = self.onKeyDown;
      return function(e) {
        var index, $option, $options, $optgroup;
  
        if (this.isOpen && (e.keyCode === KEY_LEFT || e.keyCode === KEY_RIGHT)) {
          self.ignoreHover = true;
          $optgroup = this.$activeOption.closest('[data-group]');
          index = $optgroup.find('[data-selectable]').index(this.$activeOption);
  
          if(e.keyCode === KEY_LEFT) {
            $optgroup = $optgroup.prev('[data-group]');
          } else {
            $optgroup = $optgroup.next('[data-group]');
          }
  
          $options = $optgroup.find('[data-selectable]');
          $option  = $options.eq(Math.min($options.length - 1, index));
          if ($option.length) {
            this.setActiveOption($option);
          }
          return;
        }
  
        return original.apply(this, arguments);
      };
    })();
  
    var equalizeSizes = function() {
      var i, n, height_max, width, width_last, width_parent, $optgroups;
  
      $optgroups = $('[data-group]', self.$dropdown_content);
      n = $optgroups.length;
      if (!n || !self.$dropdown_content.width()) return;
  
      if (options.equalizeHeight) {
        height_max = 0;
        for (i = 0; i < n; i++) {
          height_max = Math.max(height_max, $optgroups.eq(i).height());
        }
        $optgroups.css({height: height_max});
      }
  
      if (options.equalizeWidth) {
        width_parent = self.$dropdown_content.innerWidth();
        width = Math.round(width_parent / n);
        $optgroups.css({width: width});
        if (n > 1) {
          width_last = width_parent - width * (n - 1);
          $optgroups.eq(n - 1).css({width: width_last});
        }
      }
    };
  
    if (options.equalizeHeight || options.equalizeWidth) {
      hook.after(this, 'positionDropdown', equalizeSizes);
      hook.after(this, 'refreshOptions', equalizeSizes);
    }
  
  
  });
  
  Selectize.define('remove_button', function(options) {
    if (this.settings.mode === 'single') return;
  
    options = $.extend({
      label     : '&times;',
      title     : 'Remove',
      className : 'remove',
      append    : true
    }, options);
  
    var self = this;
    var html = '<a href="javascript:void(0)" class="' + options.className + '" tabindex="-1" title="' + escape_html(options.title) + '">' + options.label + '</a>';
  
    /**
     * Appends an element as a child (with raw HTML).
     *
     * @param {string} html_container
     * @param {string} html_element
     * @return {string}
     */
    var append = function(html_container, html_element) {
      var pos = html_container.search(/(<\/[^>]+>\s*)$/);
      return html_container.substring(0, pos) + html_element + html_container.substring(pos);
    };
  
    this.setup = (function() {
      var original = self.setup;
      return function() {
        // override the item rendering method to add the button to each
        if (options.append) {
          var render_item = self.settings.render.item;
          self.settings.render.item = function(data) {
            return append(render_item.apply(this, arguments), html);
          };
        }
  
        original.apply(this, arguments);
  
        // add event listener
        this.$control.on('click', '.' + options.className, function(e) {
          e.preventDefault();
          if (self.isLocked) return;
  
          var $item = $(e.currentTarget).parent();
          self.setActiveItem($item);
          if (self.deleteSelection()) {
            self.setCaret(self.items.length);
          }
        });
  
      };
    })();
  
  });
  
  Selectize.define('restore_on_backspace', function(options) {
    var self = this;
  
    options.text = options.text || function(option) {
      return option[this.settings.labelField];
    };
  
    this.onKeyDown = (function(e) {
      var original = self.onKeyDown;
      return function(e) {
        var index, option;
        if (e.keyCode === KEY_BACKSPACE && this.$control_input.val() === '' && !this.$activeItems.length) {
          index = this.caretPos - 1;
          if (index >= 0 && index < this.items.length) {
            option = this.options[this.items[index]];
            if (this.deleteSelection(e)) {
              this.setTextboxValue(options.text.apply(this, [option]));
              this.refreshOptions(true);
            }
            e.preventDefault();
            return;
          }
        }
        return original.apply(this, arguments);
      };
    })();
  });

  return Selectize;
}));
/*! URI.js v1.13.1 http://medialize.github.io/URI.js/ */
/* build contains: SecondLevelDomains.js, URI.js */
(function(f,k){"object"===typeof exports?module.exports=k():"function"===typeof define&&define.amd?define(k):f.SecondLevelDomains=k(f)})(this,function(f){var k=f&&f.SecondLevelDomains,p={list:{ac:" com gov mil net org ",ae:" ac co gov mil name net org pro sch ",af:" com edu gov net org ",al:" com edu gov mil net org ",ao:" co ed gv it og pb ",ar:" com edu gob gov int mil net org tur ",at:" ac co gv or ",au:" asn com csiro edu gov id net org ",ba:" co com edu gov mil net org rs unbi unmo unsa untz unze ",
bb:" biz co com edu gov info net org store tv ",bh:" biz cc com edu gov info net org ",bn:" com edu gov net org ",bo:" com edu gob gov int mil net org tv ",br:" adm adv agr am arq art ato b bio blog bmd cim cng cnt com coop ecn edu eng esp etc eti far flog fm fnd fot fst g12 ggf gov imb ind inf jor jus lel mat med mil mus net nom not ntr odo org ppg pro psc psi qsl rec slg srv tmp trd tur tv vet vlog wiki zlg ",bs:" com edu gov net org ",bz:" du et om ov rg ",ca:" ab bc mb nb nf nl ns nt nu on pe qc sk yk ",
ck:" biz co edu gen gov info net org ",cn:" ac ah bj com cq edu fj gd gov gs gx gz ha hb he hi hl hn jl js jx ln mil net nm nx org qh sc sd sh sn sx tj tw xj xz yn zj ",co:" com edu gov mil net nom org ",cr:" ac c co ed fi go or sa ",cy:" ac biz com ekloges gov ltd name net org parliament press pro tm ","do":" art com edu gob gov mil net org sld web ",dz:" art asso com edu gov net org pol ",ec:" com edu fin gov info med mil net org pro ",eg:" com edu eun gov mil name net org sci ",er:" com edu gov ind mil net org rochest w ",
es:" com edu gob nom org ",et:" biz com edu gov info name net org ",fj:" ac biz com info mil name net org pro ",fk:" ac co gov net nom org ",fr:" asso com f gouv nom prd presse tm ",gg:" co net org ",gh:" com edu gov mil org ",gn:" ac com gov net org ",gr:" com edu gov mil net org ",gt:" com edu gob ind mil net org ",gu:" com edu gov net org ",hk:" com edu gov idv net org ",id:" ac co go mil net or sch web ",il:" ac co gov idf k12 muni net org ","in":" ac co edu ernet firm gen gov i ind mil net nic org res ",
iq:" com edu gov i mil net org ",ir:" ac co dnssec gov i id net org sch ",it:" edu gov ",je:" co net org ",jo:" com edu gov mil name net org sch ",jp:" ac ad co ed go gr lg ne or ",ke:" ac co go info me mobi ne or sc ",kh:" com edu gov mil net org per ",ki:" biz com de edu gov info mob net org tel ",km:" asso com coop edu gouv k medecin mil nom notaires pharmaciens presse tm veterinaire ",kn:" edu gov net org ",kr:" ac busan chungbuk chungnam co daegu daejeon es gangwon go gwangju gyeongbuk gyeonggi gyeongnam hs incheon jeju jeonbuk jeonnam k kg mil ms ne or pe re sc seoul ulsan ",
kw:" com edu gov net org ",ky:" com edu gov net org ",kz:" com edu gov mil net org ",lb:" com edu gov net org ",lk:" assn com edu gov grp hotel int ltd net ngo org sch soc web ",lr:" com edu gov net org ",lv:" asn com conf edu gov id mil net org ",ly:" com edu gov id med net org plc sch ",ma:" ac co gov m net org press ",mc:" asso tm ",me:" ac co edu gov its net org priv ",mg:" com edu gov mil nom org prd tm ",mk:" com edu gov inf name net org pro ",ml:" com edu gov net org presse ",mn:" edu gov org ",
mo:" com edu gov net org ",mt:" com edu gov net org ",mv:" aero biz com coop edu gov info int mil museum name net org pro ",mw:" ac co com coop edu gov int museum net org ",mx:" com edu gob net org ",my:" com edu gov mil name net org sch ",nf:" arts com firm info net other per rec store web ",ng:" biz com edu gov mil mobi name net org sch ",ni:" ac co com edu gob mil net nom org ",np:" com edu gov mil net org ",nr:" biz com edu gov info net org ",om:" ac biz co com edu gov med mil museum net org pro sch ",
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case "ip":return b;case "ip4":case "ipv4":case "inet4":return c;case "ip6":case "ipv6":case "inet6":return e;case "idn":return g;case "url":return!this._parts.urn;case "urn":return!!this._parts.urn;case "punycode":return k}return null};var A=e.protocol,B=e.port,C=e.hostname;e.protocol=function(a,b){if(void 0!==a&&a&&(a=a.replace(/:(\/\/)?$/,""),!a.match(d.protocol_expression)))throw new TypeError('Protocol "'+a+"\" contains characters other than [A-Z0-9.+-] or doesn't start with [A-Z]");return A.call(this,
a,b)};e.scheme=e.protocol;e.port=function(a,b){if(this._parts.urn)return void 0===a?"":this;if(void 0!==a&&(0===a&&(a=null),a&&(a+="",":"===a.charAt(0)&&(a=a.substring(1)),a.match(/[^0-9]/))))throw new TypeError('Port "'+a+'" contains characters other than [0-9]');return B.call(this,a,b)};e.hostname=function(a,b){if(this._parts.urn)return void 0===a?"":this;if(void 0!==a){var c={};d.parseHost(a,c);a=c.hostname}return C.call(this,a,b)};e.host=function(a,b){if(this._parts.urn)return void 0===a?"":this;
if(void 0===a)return this._parts.hostname?d.buildHost(this._parts):"";d.parseHost(a,this._parts);this.build(!b);return this};e.authority=function(a,b){if(this._parts.urn)return void 0===a?"":this;if(void 0===a)return this._parts.hostname?d.buildAuthority(this._parts):"";d.parseAuthority(a,this._parts);this.build(!b);return this};e.userinfo=function(a,b){if(this._parts.urn)return void 0===a?"":this;if(void 0===a){if(!this._parts.username)return"";var c=d.buildUserinfo(this._parts);return c.substring(0,
c.length-1)}"@"!==a[a.length-1]&&(a+="@");d.parseUserinfo(a,this._parts);this.build(!b);return this};e.resource=function(a,b){var c;if(void 0===a)return this.path()+this.search()+this.hash();c=d.parse(a);this._parts.path=c.path;this._parts.query=c.query;this._parts.fragment=c.fragment;this.build(!b);return this};e.subdomain=function(a,b){if(this._parts.urn)return void 0===a?"":this;if(void 0===a){if(!this._parts.hostname||this.is("IP"))return"";var c=this._parts.hostname.length-this.domain().length-
1;return this._parts.hostname.substring(0,c)||""}c=this._parts.hostname.length-this.domain().length;c=this._parts.hostname.substring(0,c);c=new RegExp("^"+r(c));a&&"."!==a.charAt(a.length-1)&&(a+=".");a&&d.ensureValidHostname(a);this._parts.hostname=this._parts.hostname.replace(c,a);this.build(!b);return this};e.domain=function(a,b){if(this._parts.urn)return void 0===a?"":this;"boolean"===typeof a&&(b=a,a=void 0);if(void 0===a){if(!this._parts.hostname||this.is("IP"))return"";var c=this._parts.hostname.match(/\./g);
if(c&&2>c.length)return this._parts.hostname;c=this._parts.hostname.length-this.tld(b).length-1;c=this._parts.hostname.lastIndexOf(".",c-1)+1;return this._parts.hostname.substring(c)||""}if(!a)throw new TypeError("cannot set domain empty");d.ensureValidHostname(a);!this._parts.hostname||this.is("IP")?this._parts.hostname=a:(c=new RegExp(r(this.domain())+"$"),this._parts.hostname=this._parts.hostname.replace(c,a));this.build(!b);return this};e.tld=function(a,b){if(this._parts.urn)return void 0===a?
"":this;"boolean"===typeof a&&(b=a,a=void 0);if(void 0===a){if(!this._parts.hostname||this.is("IP"))return"";var c=this._parts.hostname.lastIndexOf("."),c=this._parts.hostname.substring(c+1);return!0!==b&&p&&p.list[c.toLowerCase()]?p.get(this._parts.hostname)||c:c}if(a)if(a.match(/[^a-zA-Z0-9-]/))if(p&&p.is(a))c=new RegExp(r(this.tld())+"$"),this._parts.hostname=this._parts.hostname.replace(c,a);else throw new TypeError('TLD "'+a+'" contains characters other than [A-Z0-9]');else{if(!this._parts.hostname||
this.is("IP"))throw new ReferenceError("cannot set TLD on non-domain host");c=new RegExp(r(this.tld())+"$");this._parts.hostname=this._parts.hostname.replace(c,a)}else throw new TypeError("cannot set TLD empty");this.build(!b);return this};e.directory=function(a,b){if(this._parts.urn)return void 0===a?"":this;if(void 0===a||!0===a){if(!this._parts.path&&!this._parts.hostname)return"";if("/"===this._parts.path)return"/";var c=this._parts.path.length-this.filename().length-1,c=this._parts.path.substring(0,
c)||(this._parts.hostname?"/":"");return a?d.decodePath(c):c}c=this._parts.path.length-this.filename().length;c=this._parts.path.substring(0,c);c=new RegExp("^"+r(c));this.is("relative")||(a||(a="/"),"/"!==a.charAt(0)&&(a="/"+a));a&&"/"!==a.charAt(a.length-1)&&(a+="/");a=d.recodePath(a);this._parts.path=this._parts.path.replace(c,a);this.build(!b);return this};e.filename=function(a,b){if(this._parts.urn)return void 0===a?"":this;if(void 0===a||!0===a){if(!this._parts.path||"/"===this._parts.path)return"";
var c=this._parts.path.lastIndexOf("/"),c=this._parts.path.substring(c+1);return a?d.decodePathSegment(c):c}c=!1;"/"===a.charAt(0)&&(a=a.substring(1));a.match(/\.?\//)&&(c=!0);var e=new RegExp(r(this.filename())+"$");a=d.recodePath(a);this._parts.path=this._parts.path.replace(e,a);c?this.normalizePath(b):this.build(!b);return this};e.suffix=function(a,b){if(this._parts.urn)return void 0===a?"":this;if(void 0===a||!0===a){if(!this._parts.path||"/"===this._parts.path)return"";var c=this.filename(),
e=c.lastIndexOf(".");if(-1===e)return"";c=c.substring(e+1);c=/^[a-z0-9%]+$/i.test(c)?c:"";return a?d.decodePathSegment(c):c}"."===a.charAt(0)&&(a=a.substring(1));if(c=this.suffix())e=a?new RegExp(r(c)+"$"):new RegExp(r("."+c)+"$");else{if(!a)return this;this._parts.path+="."+d.recodePath(a)}e&&(a=d.recodePath(a),this._parts.path=this._parts.path.replace(e,a));this.build(!b);return this};e.segment=function(a,b,c){var d=this._parts.urn?":":"/",e=this.path(),f="/"===e.substring(0,1),e=e.split(d);void 0!==
a&&"number"!==typeof a&&(c=b,b=a,a=void 0);if(void 0!==a&&"number"!==typeof a)throw Error('Bad segment "'+a+'", must be 0-based integer');f&&e.shift();0>a&&(a=Math.max(e.length+a,0));if(void 0===b)return void 0===a?e:e[a];if(null===a||void 0===e[a])if(l(b)){e=[];a=0;for(var g=b.length;a<g;a++)if(b[a].length||e.length&&e[e.length-1].length)e.length&&!e[e.length-1].length&&e.pop(),e.push(b[a])}else{if(b||"string"===typeof b)""===e[e.length-1]?e[e.length-1]=b:e.push(b)}else b||"string"===typeof b&&b.length?
e[a]=b:e.splice(a,1);f&&e.unshift("");return this.path(e.join(d),c)};e.segmentCoded=function(a,b,c){var e,f;"number"!==typeof a&&(c=b,b=a,a=void 0);if(void 0===b){a=this.segment(a,b,c);if(l(a))for(e=0,f=a.length;e<f;e++)a[e]=d.decode(a[e]);else a=void 0!==a?d.decode(a):void 0;return a}if(l(b))for(e=0,f=b.length;e<f;e++)b[e]=d.decode(b[e]);else b="string"===typeof b?d.encode(b):b;return this.segment(a,b,c)};var D=e.query;e.query=function(a,b){if(!0===a)return d.parseQuery(this._parts.query,this._parts.escapeQuerySpace);
if("function"===typeof a){var c=d.parseQuery(this._parts.query,this._parts.escapeQuerySpace),e=a.call(this,c);this._parts.query=d.buildQuery(e||c,this._parts.duplicateQueryParameters,this._parts.escapeQuerySpace);this.build(!b);return this}return void 0!==a&&"string"!==typeof a?(this._parts.query=d.buildQuery(a,this._parts.duplicateQueryParameters,this._parts.escapeQuerySpace),this.build(!b),this):D.call(this,a,b)};e.setQuery=function(a,b,c){var e=d.parseQuery(this._parts.query,this._parts.escapeQuerySpace);
if("object"===typeof a)for(var f in a)s.call(a,f)&&(e[f]=a[f]);else if("string"===typeof a)e[a]=void 0!==b?b:null;else throw new TypeError("URI.addQuery() accepts an object, string as the name parameter");this._parts.query=d.buildQuery(e,this._parts.duplicateQueryParameters,this._parts.escapeQuerySpace);"string"!==typeof a&&(c=b);this.build(!c);return this};e.addQuery=function(a,b,c){var e=d.parseQuery(this._parts.query,this._parts.escapeQuerySpace);d.addQuery(e,a,void 0===b?null:b);this._parts.query=
d.buildQuery(e,this._parts.duplicateQueryParameters,this._parts.escapeQuerySpace);"string"!==typeof a&&(c=b);this.build(!c);return this};e.removeQuery=function(a,b,c){var e=d.parseQuery(this._parts.query,this._parts.escapeQuerySpace);d.removeQuery(e,a,b);this._parts.query=d.buildQuery(e,this._parts.duplicateQueryParameters,this._parts.escapeQuerySpace);"string"!==typeof a&&(c=b);this.build(!c);return this};e.hasQuery=function(a,b,c){var e=d.parseQuery(this._parts.query,this._parts.escapeQuerySpace);
return d.hasQuery(e,a,b,c)};e.setSearch=e.setQuery;e.addSearch=e.addQuery;e.removeSearch=e.removeQuery;e.hasSearch=e.hasQuery;e.normalize=function(){return this._parts.urn?this.normalizeProtocol(!1).normalizeQuery(!1).normalizeFragment(!1).build():this.normalizeProtocol(!1).normalizeHostname(!1).normalizePort(!1).normalizePath(!1).normalizeQuery(!1).normalizeFragment(!1).build()};e.normalizeProtocol=function(a){"string"===typeof this._parts.protocol&&(this._parts.protocol=this._parts.protocol.toLowerCase(),
this.build(!a));return this};e.normalizeHostname=function(a){this._parts.hostname&&(this.is("IDN")&&f?this._parts.hostname=f.toASCII(this._parts.hostname):this.is("IPv6")&&k&&(this._parts.hostname=k.best(this._parts.hostname)),this._parts.hostname=this._parts.hostname.toLowerCase(),this.build(!a));return this};e.normalizePort=function(a){"string"===typeof this._parts.protocol&&this._parts.port===d.defaultPorts[this._parts.protocol]&&(this._parts.port=null,this.build(!a));return this};e.normalizePath=
function(a){if(this._parts.urn||!this._parts.path||"/"===this._parts.path)return this;var b,c=this._parts.path,e="",f,g;"/"!==c.charAt(0)&&(b=!0,c="/"+c);c=c.replace(/(\/(\.\/)+)|(\/\.$)/g,"/").replace(/\/{2,}/g,"/");b&&(e=c.substring(1).match(/^(\.\.\/)+/)||"")&&(e=e[0]);for(;;){f=c.indexOf("/..");if(-1===f)break;else if(0===f){c=c.substring(3);continue}g=c.substring(0,f).lastIndexOf("/");-1===g&&(g=f);c=c.substring(0,g)+c.substring(f+3)}b&&this.is("relative")&&(c=e+c.substring(1));c=d.recodePath(c);
this._parts.path=c;this.build(!a);return this};e.normalizePathname=e.normalizePath;e.normalizeQuery=function(a){"string"===typeof this._parts.query&&(this._parts.query.length?this.query(d.parseQuery(this._parts.query,this._parts.escapeQuerySpace)):this._parts.query=null,this.build(!a));return this};e.normalizeFragment=function(a){this._parts.fragment||(this._parts.fragment=null,this.build(!a));return this};e.normalizeSearch=e.normalizeQuery;e.normalizeHash=e.normalizeFragment;e.iso8859=function(){var a=
d.encode,b=d.decode;d.encode=escape;d.decode=decodeURIComponent;this.normalize();d.encode=a;d.decode=b;return this};e.unicode=function(){var a=d.encode,b=d.decode;d.encode=w;d.decode=unescape;this.normalize();d.encode=a;d.decode=b;return this};e.readable=function(){var a=this.clone();a.username("").password("").normalize();var b="";a._parts.protocol&&(b+=a._parts.protocol+"://");a._parts.hostname&&(a.is("punycode")&&f?(b+=f.toUnicode(a._parts.hostname),a._parts.port&&(b+=":"+a._parts.port)):b+=a.host());
a._parts.hostname&&a._parts.path&&"/"!==a._parts.path.charAt(0)&&(b+="/");b+=a.path(!0);if(a._parts.query){for(var c="",e=0,g=a._parts.query.split("&"),k=g.length;e<k;e++){var l=(g[e]||"").split("="),c=c+("&"+d.decodeQuery(l[0],this._parts.escapeQuerySpace).replace(/&/g,"%26"));void 0!==l[1]&&(c+="="+d.decodeQuery(l[1],this._parts.escapeQuerySpace).replace(/&/g,"%26"))}b+="?"+c.substring(1)}return b+=d.decodeQuery(a.hash(),!0)};e.absoluteTo=function(a){var b=this.clone(),c=["protocol","username",
"password","hostname","port"],e,f;if(this._parts.urn)throw Error("URNs do not have any generally defined hierarchical components");a instanceof d||(a=new d(a));b._parts.protocol||(b._parts.protocol=a._parts.protocol);if(this._parts.hostname)return b;for(e=0;f=c[e];e++)b._parts[f]=a._parts[f];b._parts.path?".."===b._parts.path.substring(-2)&&(b._parts.path+="/"):(b._parts.path=a._parts.path,b._parts.query||(b._parts.query=a._parts.query));"/"!==b.path().charAt(0)&&(a=a.directory(),b._parts.path=(a?
a+"/":"")+b._parts.path,b.normalizePath());b.build();return b};e.relativeTo=function(a){var b=this.clone().normalize(),c,e,f,g;if(b._parts.urn)throw Error("URNs do not have any generally defined hierarchical components");a=(new d(a)).normalize();c=b._parts;e=a._parts;f=b.path();g=a.path();if("/"!==f.charAt(0))throw Error("URI is already relative");if("/"!==g.charAt(0))throw Error("Cannot calculate a URI relative to another relative URI");c.protocol===e.protocol&&(c.protocol=null);if(c.username===
e.username&&c.password===e.password&&null===c.protocol&&null===c.username&&null===c.password&&c.hostname===e.hostname&&c.port===e.port)c.hostname=null,c.port=null;else return b.build();if(f===g)return c.path="",b.build();a=d.commonPath(b.path(),a.path());if(!a)return b.build();e=e.path.substring(a.length).replace(/[^\/]*$/,"").replace(/.*?\//g,"../");c.path=e+c.path.substring(a.length);return b.build()};e.equals=function(a){var b=this.clone();a=new d(a);var c={},e={},f={},g;b.normalize();a.normalize();
if(b.toString()===a.toString())return!0;c=b.query();e=a.query();b.query("");a.query("");if(b.toString()!==a.toString()||c.length!==e.length)return!1;c=d.parseQuery(c,this._parts.escapeQuerySpace);e=d.parseQuery(e,this._parts.escapeQuerySpace);for(g in c)if(s.call(c,g)){if(!l(c[g])){if(c[g]!==e[g])return!1}else if(!x(c[g],e[g]))return!1;f[g]=!0}for(g in e)if(s.call(e,g)&&!f[g])return!1;return!0};e.duplicateQueryParameters=function(a){this._parts.duplicateQueryParameters=!!a;return this};e.escapeQuerySpace=
function(a){this._parts.escapeQuerySpace=!!a;return this};return d});