Chris@441: /*  Prototype JavaScript framework, version 1.7
Chris@441:  *  (c) 2005-2010 Sam Stephenson
Chris@0:  *
Chris@0:  *  Prototype is freely distributable under the terms of an MIT-style license.
Chris@0:  *  For details, see the Prototype web site: http://www.prototypejs.org/
Chris@0:  *
Chris@0:  *--------------------------------------------------------------------------*/
Chris@0: 
Chris@0: var Prototype = {
Chris@441: 
Chris@441:   Version: '1.7',
Chris@441: 
Chris@441:   Browser: (function(){
Chris@441:     var ua = navigator.userAgent;
Chris@441:     var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]';
Chris@441:     return {
Chris@441:       IE:             !!window.attachEvent && !isOpera,
Chris@441:       Opera:          isOpera,
Chris@441:       WebKit:         ua.indexOf('AppleWebKit/') > -1,
Chris@441:       Gecko:          ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') === -1,
Chris@441:       MobileSafari:   /Apple.*Mobile/.test(ua)
Chris@441:     }
Chris@441:   })(),
Chris@0: 
Chris@0:   BrowserFeatures: {
Chris@0:     XPath: !!document.evaluate,
Chris@441: 
Chris@0:     SelectorsAPI: !!document.querySelector,
Chris@441: 
Chris@441:     ElementExtensions: (function() {
Chris@441:       var constructor = window.Element || window.HTMLElement;
Chris@441:       return !!(constructor && constructor.prototype);
Chris@441:     })(),
Chris@441:     SpecificElementExtensions: (function() {
Chris@441:       if (typeof window.HTMLDivElement !== 'undefined')
Chris@441:         return true;
Chris@441: 
Chris@441:       var div = document.createElement('div'),
Chris@441:           form = document.createElement('form'),
Chris@441:           isSupported = false;
Chris@441: 
Chris@441:       if (div['__proto__'] && (div['__proto__'] !== form['__proto__'])) {
Chris@441:         isSupported = true;
Chris@441:       }
Chris@441: 
Chris@441:       div = form = null;
Chris@441: 
Chris@441:       return isSupported;
Chris@441:     })()
Chris@0:   },
Chris@0: 
Chris@0:   ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
Chris@0:   JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,
Chris@0: 
Chris@0:   emptyFunction: function() { },
Chris@441: 
Chris@0:   K: function(x) { return x }
Chris@0: };
Chris@0: 
Chris@0: if (Prototype.Browser.MobileSafari)
Chris@0:   Prototype.BrowserFeatures.SpecificElementExtensions = false;
Chris@0: 
Chris@0: 
Chris@0: var Abstract = { };
Chris@0: 
Chris@0: 
Chris@0: var Try = {
Chris@0:   these: function() {
Chris@0:     var returnValue;
Chris@0: 
Chris@0:     for (var i = 0, length = arguments.length; i < length; i++) {
Chris@0:       var lambda = arguments[i];
Chris@0:       try {
Chris@0:         returnValue = lambda();
Chris@0:         break;
Chris@0:       } catch (e) { }
Chris@0:     }
Chris@0: 
Chris@0:     return returnValue;
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@441: /* Based on Alex Arnell's inheritance implementation. */
Chris@441: 
Chris@441: var Class = (function() {
Chris@441: 
Chris@441:   var IS_DONTENUM_BUGGY = (function(){
Chris@441:     for (var p in { toString: 1 }) {
Chris@441:       if (p === 'toString') return false;
Chris@441:     }
Chris@441:     return true;
Chris@441:   })();
Chris@441: 
Chris@441:   function subclass() {};
Chris@441:   function create() {
Chris@441:     var parent = null, properties = $A(arguments);
Chris@441:     if (Object.isFunction(properties[0]))
Chris@441:       parent = properties.shift();
Chris@441: 
Chris@441:     function klass() {
Chris@441:       this.initialize.apply(this, arguments);
Chris@441:     }
Chris@441: 
Chris@441:     Object.extend(klass, Class.Methods);
Chris@441:     klass.superclass = parent;
Chris@441:     klass.subclasses = [];
Chris@441: 
Chris@441:     if (parent) {
Chris@441:       subclass.prototype = parent.prototype;
Chris@441:       klass.prototype = new subclass;
Chris@441:       parent.subclasses.push(klass);
Chris@441:     }
Chris@441: 
Chris@441:     for (var i = 0, length = properties.length; i < length; i++)
Chris@441:       klass.addMethods(properties[i]);
Chris@441: 
Chris@441:     if (!klass.prototype.initialize)
Chris@441:       klass.prototype.initialize = Prototype.emptyFunction;
Chris@441: 
Chris@441:     klass.prototype.constructor = klass;
Chris@441:     return klass;
Chris@441:   }
Chris@441: 
Chris@441:   function addMethods(source) {
Chris@441:     var ancestor   = this.superclass && this.superclass.prototype,
Chris@441:         properties = Object.keys(source);
Chris@441: 
Chris@441:     if (IS_DONTENUM_BUGGY) {
Chris@441:       if (source.toString != Object.prototype.toString)
Chris@441:         properties.push("toString");
Chris@441:       if (source.valueOf != Object.prototype.valueOf)
Chris@441:         properties.push("valueOf");
Chris@441:     }
Chris@441: 
Chris@441:     for (var i = 0, length = properties.length; i < length; i++) {
Chris@441:       var property = properties[i], value = source[property];
Chris@441:       if (ancestor && Object.isFunction(value) &&
Chris@441:           value.argumentNames()[0] == "$super") {
Chris@441:         var method = value;
Chris@441:         value = (function(m) {
Chris@441:           return function() { return ancestor[m].apply(this, arguments); };
Chris@441:         })(property).wrap(method);
Chris@441: 
Chris@441:         value.valueOf = method.valueOf.bind(method);
Chris@441:         value.toString = method.toString.bind(method);
Chris@441:       }
Chris@441:       this.prototype[property] = value;
Chris@441:     }
Chris@441: 
Chris@441:     return this;
Chris@441:   }
Chris@441: 
Chris@441:   return {
Chris@441:     create: create,
Chris@441:     Methods: {
Chris@441:       addMethods: addMethods
Chris@441:     }
Chris@441:   };
Chris@441: })();
Chris@441: (function() {
Chris@441: 
Chris@441:   var _toString = Object.prototype.toString,
Chris@441:       NULL_TYPE = 'Null',
Chris@441:       UNDEFINED_TYPE = 'Undefined',
Chris@441:       BOOLEAN_TYPE = 'Boolean',
Chris@441:       NUMBER_TYPE = 'Number',
Chris@441:       STRING_TYPE = 'String',
Chris@441:       OBJECT_TYPE = 'Object',
Chris@441:       FUNCTION_CLASS = '[object Function]',
Chris@441:       BOOLEAN_CLASS = '[object Boolean]',
Chris@441:       NUMBER_CLASS = '[object Number]',
Chris@441:       STRING_CLASS = '[object String]',
Chris@441:       ARRAY_CLASS = '[object Array]',
Chris@441:       DATE_CLASS = '[object Date]',
Chris@441:       NATIVE_JSON_STRINGIFY_SUPPORT = window.JSON &&
Chris@441:         typeof JSON.stringify === 'function' &&
Chris@441:         JSON.stringify(0) === '0' &&
Chris@441:         typeof JSON.stringify(Prototype.K) === 'undefined';
Chris@441: 
Chris@441:   function Type(o) {
Chris@441:     switch(o) {
Chris@441:       case null: return NULL_TYPE;
Chris@441:       case (void 0): return UNDEFINED_TYPE;
Chris@441:     }
Chris@441:     var type = typeof o;
Chris@441:     switch(type) {
Chris@441:       case 'boolean': return BOOLEAN_TYPE;
Chris@441:       case 'number':  return NUMBER_TYPE;
Chris@441:       case 'string':  return STRING_TYPE;
Chris@441:     }
Chris@441:     return OBJECT_TYPE;
Chris@441:   }
Chris@441: 
Chris@441:   function extend(destination, source) {
Chris@441:     for (var property in source)
Chris@441:       destination[property] = source[property];
Chris@441:     return destination;
Chris@441:   }
Chris@441: 
Chris@441:   function inspect(object) {
Chris@441:     try {
Chris@441:       if (isUndefined(object)) return 'undefined';
Chris@441:       if (object === null) return 'null';
Chris@441:       return object.inspect ? object.inspect() : String(object);
Chris@441:     } catch (e) {
Chris@441:       if (e instanceof RangeError) return '...';
Chris@441:       throw e;
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   function toJSON(value) {
Chris@441:     return Str('', { '': value }, []);
Chris@441:   }
Chris@441: 
Chris@441:   function Str(key, holder, stack) {
Chris@441:     var value = holder[key],
Chris@441:         type = typeof value;
Chris@441: 
Chris@441:     if (Type(value) === OBJECT_TYPE && typeof value.toJSON === 'function') {
Chris@441:       value = value.toJSON(key);
Chris@441:     }
Chris@441: 
Chris@441:     var _class = _toString.call(value);
Chris@441: 
Chris@441:     switch (_class) {
Chris@441:       case NUMBER_CLASS:
Chris@441:       case BOOLEAN_CLASS:
Chris@441:       case STRING_CLASS:
Chris@441:         value = value.valueOf();
Chris@441:     }
Chris@441: 
Chris@441:     switch (value) {
Chris@441:       case null: return 'null';
Chris@441:       case true: return 'true';
Chris@441:       case false: return 'false';
Chris@441:     }
Chris@441: 
Chris@441:     type = typeof value;
Chris@441:     switch (type) {
Chris@441:       case 'string':
Chris@441:         return value.inspect(true);
Chris@441:       case 'number':
Chris@441:         return isFinite(value) ? String(value) : 'null';
Chris@441:       case 'object':
Chris@441: 
Chris@441:         for (var i = 0, length = stack.length; i < length; i++) {
Chris@441:           if (stack[i] === value) { throw new TypeError(); }
Chris@441:         }
Chris@441:         stack.push(value);
Chris@441: 
Chris@441:         var partial = [];
Chris@441:         if (_class === ARRAY_CLASS) {
Chris@441:           for (var i = 0, length = value.length; i < length; i++) {
Chris@441:             var str = Str(i, value, stack);
Chris@441:             partial.push(typeof str === 'undefined' ? 'null' : str);
Chris@441:           }
Chris@441:           partial = '[' + partial.join(',') + ']';
Chris@441:         } else {
Chris@441:           var keys = Object.keys(value);
Chris@441:           for (var i = 0, length = keys.length; i < length; i++) {
Chris@441:             var key = keys[i], str = Str(key, value, stack);
Chris@441:             if (typeof str !== "undefined") {
Chris@441:                partial.push(key.inspect(true)+ ':' + str);
Chris@441:              }
Chris@441:           }
Chris@441:           partial = '{' + partial.join(',') + '}';
Chris@441:         }
Chris@441:         stack.pop();
Chris@441:         return partial;
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   function stringify(object) {
Chris@441:     return JSON.stringify(object);
Chris@441:   }
Chris@441: 
Chris@441:   function toQueryString(object) {
Chris@441:     return $H(object).toQueryString();
Chris@441:   }
Chris@441: 
Chris@441:   function toHTML(object) {
Chris@441:     return object && object.toHTML ? object.toHTML() : String.interpret(object);
Chris@441:   }
Chris@441: 
Chris@441:   function keys(object) {
Chris@441:     if (Type(object) !== OBJECT_TYPE) { throw new TypeError(); }
Chris@441:     var results = [];
Chris@441:     for (var property in object) {
Chris@441:       if (object.hasOwnProperty(property)) {
Chris@441:         results.push(property);
Chris@441:       }
Chris@441:     }
Chris@441:     return results;
Chris@441:   }
Chris@441: 
Chris@441:   function values(object) {
Chris@441:     var results = [];
Chris@441:     for (var property in object)
Chris@441:       results.push(object[property]);
Chris@441:     return results;
Chris@441:   }
Chris@441: 
Chris@441:   function clone(object) {
Chris@441:     return extend({ }, object);
Chris@441:   }
Chris@441: 
Chris@441:   function isElement(object) {
Chris@441:     return !!(object && object.nodeType == 1);
Chris@441:   }
Chris@441: 
Chris@441:   function isArray(object) {
Chris@441:     return _toString.call(object) === ARRAY_CLASS;
Chris@441:   }
Chris@441: 
Chris@441:   var hasNativeIsArray = (typeof Array.isArray == 'function')
Chris@441:     && Array.isArray([]) && !Array.isArray({});
Chris@441: 
Chris@441:   if (hasNativeIsArray) {
Chris@441:     isArray = Array.isArray;
Chris@441:   }
Chris@441: 
Chris@441:   function isHash(object) {
Chris@441:     return object instanceof Hash;
Chris@441:   }
Chris@441: 
Chris@441:   function isFunction(object) {
Chris@441:     return _toString.call(object) === FUNCTION_CLASS;
Chris@441:   }
Chris@441: 
Chris@441:   function isString(object) {
Chris@441:     return _toString.call(object) === STRING_CLASS;
Chris@441:   }
Chris@441: 
Chris@441:   function isNumber(object) {
Chris@441:     return _toString.call(object) === NUMBER_CLASS;
Chris@441:   }
Chris@441: 
Chris@441:   function isDate(object) {
Chris@441:     return _toString.call(object) === DATE_CLASS;
Chris@441:   }
Chris@441: 
Chris@441:   function isUndefined(object) {
Chris@441:     return typeof object === "undefined";
Chris@441:   }
Chris@441: 
Chris@441:   extend(Object, {
Chris@441:     extend:        extend,
Chris@441:     inspect:       inspect,
Chris@441:     toJSON:        NATIVE_JSON_STRINGIFY_SUPPORT ? stringify : toJSON,
Chris@441:     toQueryString: toQueryString,
Chris@441:     toHTML:        toHTML,
Chris@441:     keys:          Object.keys || keys,
Chris@441:     values:        values,
Chris@441:     clone:         clone,
Chris@441:     isElement:     isElement,
Chris@441:     isArray:       isArray,
Chris@441:     isHash:        isHash,
Chris@441:     isFunction:    isFunction,
Chris@441:     isString:      isString,
Chris@441:     isNumber:      isNumber,
Chris@441:     isDate:        isDate,
Chris@441:     isUndefined:   isUndefined
Chris@441:   });
Chris@441: })();
Chris@441: Object.extend(Function.prototype, (function() {
Chris@441:   var slice = Array.prototype.slice;
Chris@441: 
Chris@441:   function update(array, args) {
Chris@441:     var arrayLength = array.length, length = args.length;
Chris@441:     while (length--) array[arrayLength + length] = args[length];
Chris@441:     return array;
Chris@441:   }
Chris@441: 
Chris@441:   function merge(array, args) {
Chris@441:     array = slice.call(array, 0);
Chris@441:     return update(array, args);
Chris@441:   }
Chris@441: 
Chris@441:   function argumentNames() {
Chris@441:     var names = this.toString().match(/^[\s\(]*function[^(]*\(([^)]*)\)/)[1]
Chris@441:       .replace(/\/\/.*?[\r\n]|\/\*(?:.|[\r\n])*?\*\//g, '')
Chris@441:       .replace(/\s+/g, '').split(',');
Chris@441:     return names.length == 1 && !names[0] ? [] : names;
Chris@441:   }
Chris@441: 
Chris@441:   function bind(context) {
Chris@441:     if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
Chris@441:     var __method = this, args = slice.call(arguments, 1);
Chris@441:     return function() {
Chris@441:       var a = merge(args, arguments);
Chris@441:       return __method.apply(context, a);
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   function bindAsEventListener(context) {
Chris@441:     var __method = this, args = slice.call(arguments, 1);
Chris@441:     return function(event) {
Chris@441:       var a = update([event || window.event], args);
Chris@441:       return __method.apply(context, a);
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   function curry() {
Chris@441:     if (!arguments.length) return this;
Chris@441:     var __method = this, args = slice.call(arguments, 0);
Chris@441:     return function() {
Chris@441:       var a = merge(args, arguments);
Chris@441:       return __method.apply(this, a);
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   function delay(timeout) {
Chris@441:     var __method = this, args = slice.call(arguments, 1);
Chris@441:     timeout = timeout * 1000;
Chris@441:     return window.setTimeout(function() {
Chris@441:       return __method.apply(__method, args);
Chris@441:     }, timeout);
Chris@441:   }
Chris@441: 
Chris@441:   function defer() {
Chris@441:     var args = update([0.01], arguments);
Chris@441:     return this.delay.apply(this, args);
Chris@441:   }
Chris@441: 
Chris@441:   function wrap(wrapper) {
Chris@441:     var __method = this;
Chris@441:     return function() {
Chris@441:       var a = update([__method.bind(this)], arguments);
Chris@441:       return wrapper.apply(this, a);
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   function methodize() {
Chris@441:     if (this._methodized) return this._methodized;
Chris@441:     var __method = this;
Chris@441:     return this._methodized = function() {
Chris@441:       var a = update([this], arguments);
Chris@441:       return __method.apply(null, a);
Chris@441:     };
Chris@441:   }
Chris@441: 
Chris@441:   return {
Chris@441:     argumentNames:       argumentNames,
Chris@441:     bind:                bind,
Chris@441:     bindAsEventListener: bindAsEventListener,
Chris@441:     curry:               curry,
Chris@441:     delay:               delay,
Chris@441:     defer:               defer,
Chris@441:     wrap:                wrap,
Chris@441:     methodize:           methodize
Chris@441:   }
Chris@441: })());
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: (function(proto) {
Chris@441: 
Chris@441: 
Chris@441:   function toISOString() {
Chris@441:     return this.getUTCFullYear() + '-' +
Chris@441:       (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
Chris@441:       this.getUTCDate().toPaddedString(2) + 'T' +
Chris@441:       this.getUTCHours().toPaddedString(2) + ':' +
Chris@441:       this.getUTCMinutes().toPaddedString(2) + ':' +
Chris@441:       this.getUTCSeconds().toPaddedString(2) + 'Z';
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441:   function toJSON() {
Chris@441:     return this.toISOString();
Chris@441:   }
Chris@441: 
Chris@441:   if (!proto.toISOString) proto.toISOString = toISOString;
Chris@441:   if (!proto.toJSON) proto.toJSON = toJSON;
Chris@441: 
Chris@441: })(Date.prototype);
Chris@441: 
Chris@441: 
Chris@0: RegExp.prototype.match = RegExp.prototype.test;
Chris@0: 
Chris@0: RegExp.escape = function(str) {
Chris@0:   return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
Chris@0: };
Chris@0: var PeriodicalExecuter = Class.create({
Chris@0:   initialize: function(callback, frequency) {
Chris@0:     this.callback = callback;
Chris@0:     this.frequency = frequency;
Chris@0:     this.currentlyExecuting = false;
Chris@0: 
Chris@0:     this.registerCallback();
Chris@0:   },
Chris@0: 
Chris@0:   registerCallback: function() {
Chris@0:     this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
Chris@0:   },
Chris@0: 
Chris@0:   execute: function() {
Chris@0:     this.callback(this);
Chris@0:   },
Chris@0: 
Chris@0:   stop: function() {
Chris@0:     if (!this.timer) return;
Chris@0:     clearInterval(this.timer);
Chris@0:     this.timer = null;
Chris@0:   },
Chris@0: 
Chris@0:   onTimerEvent: function() {
Chris@0:     if (!this.currentlyExecuting) {
Chris@0:       try {
Chris@0:         this.currentlyExecuting = true;
Chris@0:         this.execute();
Chris@0:         this.currentlyExecuting = false;
Chris@441:       } catch(e) {
Chris@441:         this.currentlyExecuting = false;
Chris@441:         throw e;
Chris@0:       }
Chris@0:     }
Chris@0:   }
Chris@0: });
Chris@0: Object.extend(String, {
Chris@0:   interpret: function(value) {
Chris@0:     return value == null ? '' : String(value);
Chris@0:   },
Chris@0:   specialChar: {
Chris@0:     '\b': '\\b',
Chris@0:     '\t': '\\t',
Chris@0:     '\n': '\\n',
Chris@0:     '\f': '\\f',
Chris@0:     '\r': '\\r',
Chris@0:     '\\': '\\\\'
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@441: Object.extend(String.prototype, (function() {
Chris@441:   var NATIVE_JSON_PARSE_SUPPORT = window.JSON &&
Chris@441:     typeof JSON.parse === 'function' &&
Chris@441:     JSON.parse('{"test": true}').test;
Chris@441: 
Chris@441:   function prepareReplacement(replacement) {
Chris@441:     if (Object.isFunction(replacement)) return replacement;
Chris@441:     var template = new Template(replacement);
Chris@441:     return function(match) { return template.evaluate(match) };
Chris@441:   }
Chris@441: 
Chris@441:   function gsub(pattern, replacement) {
Chris@0:     var result = '', source = this, match;
Chris@441:     replacement = prepareReplacement(replacement);
Chris@441: 
Chris@441:     if (Object.isString(pattern))
Chris@441:       pattern = RegExp.escape(pattern);
Chris@441: 
Chris@441:     if (!(pattern.length || pattern.source)) {
Chris@441:       replacement = replacement('');
Chris@441:       return replacement + source.split('').join(replacement) + replacement;
Chris@441:     }
Chris@0: 
Chris@0:     while (source.length > 0) {
Chris@0:       if (match = source.match(pattern)) {
Chris@0:         result += source.slice(0, match.index);
Chris@0:         result += String.interpret(replacement(match));
Chris@0:         source  = source.slice(match.index + match[0].length);
Chris@0:       } else {
Chris@0:         result += source, source = '';
Chris@0:       }
Chris@0:     }
Chris@0:     return result;
Chris@441:   }
Chris@441: 
Chris@441:   function sub(pattern, replacement, count) {
Chris@441:     replacement = prepareReplacement(replacement);
Chris@0:     count = Object.isUndefined(count) ? 1 : count;
Chris@0: 
Chris@0:     return this.gsub(pattern, function(match) {
Chris@0:       if (--count < 0) return match[0];
Chris@0:       return replacement(match);
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function scan(pattern, iterator) {
Chris@0:     this.gsub(pattern, iterator);
Chris@0:     return String(this);
Chris@441:   }
Chris@441: 
Chris@441:   function truncate(length, truncation) {
Chris@0:     length = length || 30;
Chris@0:     truncation = Object.isUndefined(truncation) ? '...' : truncation;
Chris@0:     return this.length > length ?
Chris@0:       this.slice(0, length - truncation.length) + truncation : String(this);
Chris@441:   }
Chris@441: 
Chris@441:   function strip() {
Chris@0:     return this.replace(/^\s+/, '').replace(/\s+$/, '');
Chris@441:   }
Chris@441: 
Chris@441:   function stripTags() {
Chris@441:     return this.replace(/<\w+(\s+("[^"]*"|'[^']*'|[^>])+)?>|<\/\w+>/gi, '');
Chris@441:   }
Chris@441: 
Chris@441:   function stripScripts() {
Chris@0:     return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
Chris@441:   }
Chris@441: 
Chris@441:   function extractScripts() {
Chris@441:     var matchAll = new RegExp(Prototype.ScriptFragment, 'img'),
Chris@441:         matchOne = new RegExp(Prototype.ScriptFragment, 'im');
Chris@0:     return (this.match(matchAll) || []).map(function(scriptTag) {
Chris@0:       return (scriptTag.match(matchOne) || ['', ''])[1];
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function evalScripts() {
Chris@0:     return this.extractScripts().map(function(script) { return eval(script) });
Chris@441:   }
Chris@441: 
Chris@441:   function escapeHTML() {
Chris@441:     return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
Chris@441:   }
Chris@441: 
Chris@441:   function unescapeHTML() {
Chris@441:     return this.stripTags().replace(/&lt;/g,'<').replace(/&gt;/g,'>').replace(/&amp;/g,'&');
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441:   function toQueryParams(separator) {
Chris@0:     var match = this.strip().match(/([^?#]*)(#.*)?$/);
Chris@0:     if (!match) return { };
Chris@0: 
Chris@0:     return match[1].split(separator || '&').inject({ }, function(hash, pair) {
Chris@0:       if ((pair = pair.split('='))[0]) {
Chris@441:         var key = decodeURIComponent(pair.shift()),
Chris@441:             value = pair.length > 1 ? pair.join('=') : pair[0];
Chris@441: 
Chris@0:         if (value != undefined) value = decodeURIComponent(value);
Chris@0: 
Chris@0:         if (key in hash) {
Chris@0:           if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
Chris@0:           hash[key].push(value);
Chris@0:         }
Chris@0:         else hash[key] = value;
Chris@0:       }
Chris@0:       return hash;
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function toArray() {
Chris@0:     return this.split('');
Chris@441:   }
Chris@441: 
Chris@441:   function succ() {
Chris@0:     return this.slice(0, this.length - 1) +
Chris@0:       String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
Chris@441:   }
Chris@441: 
Chris@441:   function times(count) {
Chris@0:     return count < 1 ? '' : new Array(count + 1).join(this);
Chris@441:   }
Chris@441: 
Chris@441:   function camelize() {
Chris@441:     return this.replace(/-+(.)?/g, function(match, chr) {
Chris@441:       return chr ? chr.toUpperCase() : '';
Chris@441:     });
Chris@441:   }
Chris@441: 
Chris@441:   function capitalize() {
Chris@0:     return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
Chris@441:   }
Chris@441: 
Chris@441:   function underscore() {
Chris@441:     return this.replace(/::/g, '/')
Chris@441:                .replace(/([A-Z]+)([A-Z][a-z])/g, '$1_$2')
Chris@441:                .replace(/([a-z\d])([A-Z])/g, '$1_$2')
Chris@441:                .replace(/-/g, '_')
Chris@441:                .toLowerCase();
Chris@441:   }
Chris@441: 
Chris@441:   function dasherize() {
Chris@441:     return this.replace(/_/g, '-');
Chris@441:   }
Chris@441: 
Chris@441:   function inspect(useDoubleQuotes) {
Chris@441:     var escapedString = this.replace(/[\x00-\x1f\\]/g, function(character) {
Chris@441:       if (character in String.specialChar) {
Chris@441:         return String.specialChar[character];
Chris@441:       }
Chris@441:       return '\\u00' + character.charCodeAt().toPaddedString(2, 16);
Chris@0:     });
Chris@0:     if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
Chris@0:     return "'" + escapedString.replace(/'/g, '\\\'') + "'";
Chris@441:   }
Chris@441: 
Chris@441:   function unfilterJSON(filter) {
Chris@441:     return this.replace(filter || Prototype.JSONFilter, '$1');
Chris@441:   }
Chris@441: 
Chris@441:   function isJSON() {
Chris@0:     var str = this;
Chris@0:     if (str.blank()) return false;
Chris@441:     str = str.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@');
Chris@441:     str = str.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']');
Chris@441:     str = str.replace(/(?:^|:|,)(?:\s*\[)+/g, '');
Chris@441:     return (/^[\],:{}\s]*$/).test(str);
Chris@441:   }
Chris@441: 
Chris@441:   function evalJSON(sanitize) {
Chris@441:     var json = this.unfilterJSON(),
Chris@441:         cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
Chris@441:     if (cx.test(json)) {
Chris@441:       json = json.replace(cx, function (a) {
Chris@441:         return '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
Chris@441:       });
Chris@441:     }
Chris@0:     try {
Chris@0:       if (!sanitize || json.isJSON()) return eval('(' + json + ')');
Chris@0:     } catch (e) { }
Chris@0:     throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
Chris@441:   }
Chris@441: 
Chris@441:   function parseJSON() {
Chris@441:     var json = this.unfilterJSON();
Chris@441:     return JSON.parse(json);
Chris@441:   }
Chris@441: 
Chris@441:   function include(pattern) {
Chris@0:     return this.indexOf(pattern) > -1;
Chris@441:   }
Chris@441: 
Chris@441:   function startsWith(pattern) {
Chris@441:     return this.lastIndexOf(pattern, 0) === 0;
Chris@441:   }
Chris@441: 
Chris@441:   function endsWith(pattern) {
Chris@0:     var d = this.length - pattern.length;
Chris@441:     return d >= 0 && this.indexOf(pattern, d) === d;
Chris@441:   }
Chris@441: 
Chris@441:   function empty() {
Chris@0:     return this == '';
Chris@441:   }
Chris@441: 
Chris@441:   function blank() {
Chris@0:     return /^\s*$/.test(this);
Chris@441:   }
Chris@441: 
Chris@441:   function interpolate(object, pattern) {
Chris@0:     return new Template(this, pattern).evaluate(object);
Chris@0:   }
Chris@441: 
Chris@441:   return {
Chris@441:     gsub:           gsub,
Chris@441:     sub:            sub,
Chris@441:     scan:           scan,
Chris@441:     truncate:       truncate,
Chris@441:     strip:          String.prototype.trim || strip,
Chris@441:     stripTags:      stripTags,
Chris@441:     stripScripts:   stripScripts,
Chris@441:     extractScripts: extractScripts,
Chris@441:     evalScripts:    evalScripts,
Chris@441:     escapeHTML:     escapeHTML,
Chris@441:     unescapeHTML:   unescapeHTML,
Chris@441:     toQueryParams:  toQueryParams,
Chris@441:     parseQuery:     toQueryParams,
Chris@441:     toArray:        toArray,
Chris@441:     succ:           succ,
Chris@441:     times:          times,
Chris@441:     camelize:       camelize,
Chris@441:     capitalize:     capitalize,
Chris@441:     underscore:     underscore,
Chris@441:     dasherize:      dasherize,
Chris@441:     inspect:        inspect,
Chris@441:     unfilterJSON:   unfilterJSON,
Chris@441:     isJSON:         isJSON,
Chris@441:     evalJSON:       NATIVE_JSON_PARSE_SUPPORT ? parseJSON : evalJSON,
Chris@441:     include:        include,
Chris@441:     startsWith:     startsWith,
Chris@441:     endsWith:       endsWith,
Chris@441:     empty:          empty,
Chris@441:     blank:          blank,
Chris@441:     interpolate:    interpolate
Chris@441:   };
Chris@441: })());
Chris@0: 
Chris@0: var Template = Class.create({
Chris@0:   initialize: function(template, pattern) {
Chris@0:     this.template = template.toString();
Chris@0:     this.pattern = pattern || Template.Pattern;
Chris@0:   },
Chris@0: 
Chris@0:   evaluate: function(object) {
Chris@441:     if (object && Object.isFunction(object.toTemplateReplacements))
Chris@0:       object = object.toTemplateReplacements();
Chris@0: 
Chris@0:     return this.template.gsub(this.pattern, function(match) {
Chris@441:       if (object == null) return (match[1] + '');
Chris@0: 
Chris@0:       var before = match[1] || '';
Chris@0:       if (before == '\\') return match[2];
Chris@0: 
Chris@441:       var ctx = object, expr = match[3],
Chris@441:           pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
Chris@441: 
Chris@0:       match = pattern.exec(expr);
Chris@0:       if (match == null) return before;
Chris@0: 
Chris@0:       while (match != null) {
Chris@441:         var comp = match[1].startsWith('[') ? match[2].replace(/\\\\]/g, ']') : match[1];
Chris@0:         ctx = ctx[comp];
Chris@0:         if (null == ctx || '' == match[3]) break;
Chris@0:         expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
Chris@0:         match = pattern.exec(expr);
Chris@0:       }
Chris@0: 
Chris@0:       return before + String.interpret(ctx);
Chris@0:     });
Chris@0:   }
Chris@0: });
Chris@0: Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
Chris@0: 
Chris@0: var $break = { };
Chris@0: 
Chris@441: var Enumerable = (function() {
Chris@441:   function each(iterator, context) {
Chris@0:     var index = 0;
Chris@0:     try {
Chris@0:       this._each(function(value) {
Chris@0:         iterator.call(context, value, index++);
Chris@0:       });
Chris@0:     } catch (e) {
Chris@0:       if (e != $break) throw e;
Chris@0:     }
Chris@0:     return this;
Chris@441:   }
Chris@441: 
Chris@441:   function eachSlice(number, iterator, context) {
Chris@0:     var index = -number, slices = [], array = this.toArray();
Chris@0:     if (number < 1) return array;
Chris@0:     while ((index += number) < array.length)
Chris@0:       slices.push(array.slice(index, index+number));
Chris@0:     return slices.collect(iterator, context);
Chris@441:   }
Chris@441: 
Chris@441:   function all(iterator, context) {
Chris@0:     iterator = iterator || Prototype.K;
Chris@0:     var result = true;
Chris@0:     this.each(function(value, index) {
Chris@0:       result = result && !!iterator.call(context, value, index);
Chris@0:       if (!result) throw $break;
Chris@0:     });
Chris@0:     return result;
Chris@441:   }
Chris@441: 
Chris@441:   function any(iterator, context) {
Chris@0:     iterator = iterator || Prototype.K;
Chris@0:     var result = false;
Chris@0:     this.each(function(value, index) {
Chris@0:       if (result = !!iterator.call(context, value, index))
Chris@0:         throw $break;
Chris@0:     });
Chris@0:     return result;
Chris@441:   }
Chris@441: 
Chris@441:   function collect(iterator, context) {
Chris@0:     iterator = iterator || Prototype.K;
Chris@0:     var results = [];
Chris@0:     this.each(function(value, index) {
Chris@0:       results.push(iterator.call(context, value, index));
Chris@0:     });
Chris@0:     return results;
Chris@441:   }
Chris@441: 
Chris@441:   function detect(iterator, context) {
Chris@0:     var result;
Chris@0:     this.each(function(value, index) {
Chris@0:       if (iterator.call(context, value, index)) {
Chris@0:         result = value;
Chris@0:         throw $break;
Chris@0:       }
Chris@0:     });
Chris@0:     return result;
Chris@441:   }
Chris@441: 
Chris@441:   function findAll(iterator, context) {
Chris@0:     var results = [];
Chris@0:     this.each(function(value, index) {
Chris@0:       if (iterator.call(context, value, index))
Chris@0:         results.push(value);
Chris@0:     });
Chris@0:     return results;
Chris@441:   }
Chris@441: 
Chris@441:   function grep(filter, iterator, context) {
Chris@0:     iterator = iterator || Prototype.K;
Chris@0:     var results = [];
Chris@0: 
Chris@0:     if (Object.isString(filter))
Chris@441:       filter = new RegExp(RegExp.escape(filter));
Chris@0: 
Chris@0:     this.each(function(value, index) {
Chris@0:       if (filter.match(value))
Chris@0:         results.push(iterator.call(context, value, index));
Chris@0:     });
Chris@0:     return results;
Chris@441:   }
Chris@441: 
Chris@441:   function include(object) {
Chris@0:     if (Object.isFunction(this.indexOf))
Chris@0:       if (this.indexOf(object) != -1) return true;
Chris@0: 
Chris@0:     var found = false;
Chris@0:     this.each(function(value) {
Chris@0:       if (value == object) {
Chris@0:         found = true;
Chris@0:         throw $break;
Chris@0:       }
Chris@0:     });
Chris@0:     return found;
Chris@441:   }
Chris@441: 
Chris@441:   function inGroupsOf(number, fillWith) {
Chris@0:     fillWith = Object.isUndefined(fillWith) ? null : fillWith;
Chris@0:     return this.eachSlice(number, function(slice) {
Chris@0:       while(slice.length < number) slice.push(fillWith);
Chris@0:       return slice;
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function inject(memo, iterator, context) {
Chris@0:     this.each(function(value, index) {
Chris@0:       memo = iterator.call(context, memo, value, index);
Chris@0:     });
Chris@0:     return memo;
Chris@441:   }
Chris@441: 
Chris@441:   function invoke(method) {
Chris@0:     var args = $A(arguments).slice(1);
Chris@0:     return this.map(function(value) {
Chris@0:       return value[method].apply(value, args);
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function max(iterator, context) {
Chris@0:     iterator = iterator || Prototype.K;
Chris@0:     var result;
Chris@0:     this.each(function(value, index) {
Chris@0:       value = iterator.call(context, value, index);
Chris@0:       if (result == null || value >= result)
Chris@0:         result = value;
Chris@0:     });
Chris@0:     return result;
Chris@441:   }
Chris@441: 
Chris@441:   function min(iterator, context) {
Chris@0:     iterator = iterator || Prototype.K;
Chris@0:     var result;
Chris@0:     this.each(function(value, index) {
Chris@0:       value = iterator.call(context, value, index);
Chris@0:       if (result == null || value < result)
Chris@0:         result = value;
Chris@0:     });
Chris@0:     return result;
Chris@441:   }
Chris@441: 
Chris@441:   function partition(iterator, context) {
Chris@0:     iterator = iterator || Prototype.K;
Chris@0:     var trues = [], falses = [];
Chris@0:     this.each(function(value, index) {
Chris@0:       (iterator.call(context, value, index) ?
Chris@0:         trues : falses).push(value);
Chris@0:     });
Chris@0:     return [trues, falses];
Chris@441:   }
Chris@441: 
Chris@441:   function pluck(property) {
Chris@0:     var results = [];
Chris@0:     this.each(function(value) {
Chris@0:       results.push(value[property]);
Chris@0:     });
Chris@0:     return results;
Chris@441:   }
Chris@441: 
Chris@441:   function reject(iterator, context) {
Chris@0:     var results = [];
Chris@0:     this.each(function(value, index) {
Chris@0:       if (!iterator.call(context, value, index))
Chris@0:         results.push(value);
Chris@0:     });
Chris@0:     return results;
Chris@441:   }
Chris@441: 
Chris@441:   function sortBy(iterator, context) {
Chris@0:     return this.map(function(value, index) {
Chris@0:       return {
Chris@0:         value: value,
Chris@0:         criteria: iterator.call(context, value, index)
Chris@0:       };
Chris@0:     }).sort(function(left, right) {
Chris@0:       var a = left.criteria, b = right.criteria;
Chris@0:       return a < b ? -1 : a > b ? 1 : 0;
Chris@0:     }).pluck('value');
Chris@441:   }
Chris@441: 
Chris@441:   function toArray() {
Chris@0:     return this.map();
Chris@441:   }
Chris@441: 
Chris@441:   function zip() {
Chris@0:     var iterator = Prototype.K, args = $A(arguments);
Chris@0:     if (Object.isFunction(args.last()))
Chris@0:       iterator = args.pop();
Chris@0: 
Chris@0:     var collections = [this].concat(args).map($A);
Chris@0:     return this.map(function(value, index) {
Chris@0:       return iterator(collections.pluck(index));
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function size() {
Chris@0:     return this.toArray().length;
Chris@441:   }
Chris@441: 
Chris@441:   function inspect() {
Chris@0:     return '#<Enumerable:' + this.toArray().inspect() + '>';
Chris@0:   }
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441:   return {
Chris@441:     each:       each,
Chris@441:     eachSlice:  eachSlice,
Chris@441:     all:        all,
Chris@441:     every:      all,
Chris@441:     any:        any,
Chris@441:     some:       any,
Chris@441:     collect:    collect,
Chris@441:     map:        collect,
Chris@441:     detect:     detect,
Chris@441:     findAll:    findAll,
Chris@441:     select:     findAll,
Chris@441:     filter:     findAll,
Chris@441:     grep:       grep,
Chris@441:     include:    include,
Chris@441:     member:     include,
Chris@441:     inGroupsOf: inGroupsOf,
Chris@441:     inject:     inject,
Chris@441:     invoke:     invoke,
Chris@441:     max:        max,
Chris@441:     min:        min,
Chris@441:     partition:  partition,
Chris@441:     pluck:      pluck,
Chris@441:     reject:     reject,
Chris@441:     sortBy:     sortBy,
Chris@441:     toArray:    toArray,
Chris@441:     entries:    toArray,
Chris@441:     zip:        zip,
Chris@441:     size:       size,
Chris@441:     inspect:    inspect,
Chris@441:     find:       detect
Chris@441:   };
Chris@441: })();
Chris@441: 
Chris@0: function $A(iterable) {
Chris@0:   if (!iterable) return [];
Chris@441:   if ('toArray' in Object(iterable)) return iterable.toArray();
Chris@0:   var length = iterable.length || 0, results = new Array(length);
Chris@0:   while (length--) results[length] = iterable[length];
Chris@0:   return results;
Chris@0: }
Chris@0: 
Chris@441: 
Chris@441: function $w(string) {
Chris@441:   if (!Object.isString(string)) return [];
Chris@441:   string = string.strip();
Chris@441:   return string ? string.split(/\s+/) : [];
Chris@0: }
Chris@0: 
Chris@0: Array.from = $A;
Chris@0: 
Chris@441: 
Chris@441: (function() {
Chris@441:   var arrayProto = Array.prototype,
Chris@441:       slice = arrayProto.slice,
Chris@441:       _each = arrayProto.forEach; // use native browser JS 1.6 implementation if available
Chris@441: 
Chris@441:   function each(iterator, context) {
Chris@441:     for (var i = 0, length = this.length >>> 0; i < length; i++) {
Chris@441:       if (i in this) iterator.call(context, this[i], i, this);
Chris@441:     }
Chris@441:   }
Chris@441:   if (!_each) _each = each;
Chris@441: 
Chris@441:   function clear() {
Chris@0:     this.length = 0;
Chris@0:     return this;
Chris@441:   }
Chris@441: 
Chris@441:   function first() {
Chris@0:     return this[0];
Chris@441:   }
Chris@441: 
Chris@441:   function last() {
Chris@0:     return this[this.length - 1];
Chris@441:   }
Chris@441: 
Chris@441:   function compact() {
Chris@0:     return this.select(function(value) {
Chris@0:       return value != null;
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function flatten() {
Chris@0:     return this.inject([], function(array, value) {
Chris@441:       if (Object.isArray(value))
Chris@441:         return array.concat(value.flatten());
Chris@441:       array.push(value);
Chris@441:       return array;
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function without() {
Chris@441:     var values = slice.call(arguments, 0);
Chris@0:     return this.select(function(value) {
Chris@0:       return !values.include(value);
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function reverse(inline) {
Chris@441:     return (inline === false ? this.toArray() : this)._reverse();
Chris@441:   }
Chris@441: 
Chris@441:   function uniq(sorted) {
Chris@0:     return this.inject([], function(array, value, index) {
Chris@0:       if (0 == index || (sorted ? array.last() != value : !array.include(value)))
Chris@0:         array.push(value);
Chris@0:       return array;
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441:   function intersect(array) {
Chris@0:     return this.uniq().findAll(function(item) {
Chris@0:       return array.detect(function(value) { return item === value });
Chris@0:     });
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441:   function clone() {
Chris@441:     return slice.call(this, 0);
Chris@441:   }
Chris@441: 
Chris@441:   function size() {
Chris@0:     return this.length;
Chris@441:   }
Chris@441: 
Chris@441:   function inspect() {
Chris@0:     return '[' + this.map(Object.inspect).join(', ') + ']';
Chris@441:   }
Chris@441: 
Chris@441:   function indexOf(item, i) {
Chris@441:     i || (i = 0);
Chris@441:     var length = this.length;
Chris@441:     if (i < 0) i = length + i;
Chris@441:     for (; i < length; i++)
Chris@441:       if (this[i] === item) return i;
Chris@441:     return -1;
Chris@441:   }
Chris@441: 
Chris@441:   function lastIndexOf(item, i) {
Chris@441:     i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
Chris@441:     var n = this.slice(0, i).reverse().indexOf(item);
Chris@441:     return (n < 0) ? n : i - n - 1;
Chris@441:   }
Chris@441: 
Chris@441:   function concat() {
Chris@441:     var array = slice.call(this, 0), item;
Chris@0:     for (var i = 0, length = arguments.length; i < length; i++) {
Chris@441:       item = arguments[i];
Chris@441:       if (Object.isArray(item) && !('callee' in item)) {
Chris@441:         for (var j = 0, arrayLength = item.length; j < arrayLength; j++)
Chris@441:           array.push(item[j]);
Chris@0:       } else {
Chris@441:         array.push(item);
Chris@0:       }
Chris@0:     }
Chris@0:     return array;
Chris@441:   }
Chris@441: 
Chris@441:   Object.extend(arrayProto, Enumerable);
Chris@441: 
Chris@441:   if (!arrayProto._reverse)
Chris@441:     arrayProto._reverse = arrayProto.reverse;
Chris@441: 
Chris@441:   Object.extend(arrayProto, {
Chris@441:     _each:     _each,
Chris@441:     clear:     clear,
Chris@441:     first:     first,
Chris@441:     last:      last,
Chris@441:     compact:   compact,
Chris@441:     flatten:   flatten,
Chris@441:     without:   without,
Chris@441:     reverse:   reverse,
Chris@441:     uniq:      uniq,
Chris@441:     intersect: intersect,
Chris@441:     clone:     clone,
Chris@441:     toArray:   clone,
Chris@441:     size:      size,
Chris@441:     inspect:   inspect
Chris@441:   });
Chris@441: 
Chris@441:   var CONCAT_ARGUMENTS_BUGGY = (function() {
Chris@441:     return [].concat(arguments)[0][0] !== 1;
Chris@441:   })(1,2)
Chris@441: 
Chris@441:   if (CONCAT_ARGUMENTS_BUGGY) arrayProto.concat = concat;
Chris@441: 
Chris@441:   if (!arrayProto.indexOf) arrayProto.indexOf = indexOf;
Chris@441:   if (!arrayProto.lastIndexOf) arrayProto.lastIndexOf = lastIndexOf;
Chris@441: })();
Chris@0: function $H(object) {
Chris@0:   return new Hash(object);
Chris@0: };
Chris@0: 
Chris@0: var Hash = Class.create(Enumerable, (function() {
Chris@441:   function initialize(object) {
Chris@441:     this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441:   function _each(iterator) {
Chris@441:     for (var key in this._object) {
Chris@441:       var value = this._object[key], pair = [key, value];
Chris@441:       pair.key = key;
Chris@441:       pair.value = value;
Chris@441:       iterator(pair);
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   function set(key, value) {
Chris@441:     return this._object[key] = value;
Chris@441:   }
Chris@441: 
Chris@441:   function get(key) {
Chris@441:     if (this._object[key] !== Object.prototype[key])
Chris@441:       return this._object[key];
Chris@441:   }
Chris@441: 
Chris@441:   function unset(key) {
Chris@441:     var value = this._object[key];
Chris@441:     delete this._object[key];
Chris@441:     return value;
Chris@441:   }
Chris@441: 
Chris@441:   function toObject() {
Chris@441:     return Object.clone(this._object);
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441:   function keys() {
Chris@441:     return this.pluck('key');
Chris@441:   }
Chris@441: 
Chris@441:   function values() {
Chris@441:     return this.pluck('value');
Chris@441:   }
Chris@441: 
Chris@441:   function index(value) {
Chris@441:     var match = this.detect(function(pair) {
Chris@441:       return pair.value === value;
Chris@441:     });
Chris@441:     return match && match.key;
Chris@441:   }
Chris@441: 
Chris@441:   function merge(object) {
Chris@441:     return this.clone().update(object);
Chris@441:   }
Chris@441: 
Chris@441:   function update(object) {
Chris@441:     return new Hash(object).inject(this, function(result, pair) {
Chris@441:       result.set(pair.key, pair.value);
Chris@441:       return result;
Chris@441:     });
Chris@441:   }
Chris@0: 
Chris@0:   function toQueryPair(key, value) {
Chris@0:     if (Object.isUndefined(value)) return key;
Chris@0:     return key + '=' + encodeURIComponent(String.interpret(value));
Chris@0:   }
Chris@0: 
Chris@441:   function toQueryString() {
Chris@441:     return this.inject([], function(results, pair) {
Chris@441:       var key = encodeURIComponent(pair.key), values = pair.value;
Chris@441: 
Chris@441:       if (values && typeof values == 'object') {
Chris@441:         if (Object.isArray(values)) {
Chris@441:           var queryValues = [];
Chris@441:           for (var i = 0, len = values.length, value; i < len; i++) {
Chris@441:             value = values[i];
Chris@441:             queryValues.push(toQueryPair(key, value));
Chris@441:           }
Chris@441:           return results.concat(queryValues);
Chris@441:         }
Chris@441:       } else results.push(toQueryPair(key, values));
Chris@441:       return results;
Chris@441:     }).join('&');
Chris@441:   }
Chris@441: 
Chris@441:   function inspect() {
Chris@441:     return '#<Hash:{' + this.map(function(pair) {
Chris@441:       return pair.map(Object.inspect).join(': ');
Chris@441:     }).join(', ') + '}>';
Chris@441:   }
Chris@441: 
Chris@441:   function clone() {
Chris@441:     return new Hash(this);
Chris@441:   }
Chris@441: 
Chris@0:   return {
Chris@441:     initialize:             initialize,
Chris@441:     _each:                  _each,
Chris@441:     set:                    set,
Chris@441:     get:                    get,
Chris@441:     unset:                  unset,
Chris@441:     toObject:               toObject,
Chris@441:     toTemplateReplacements: toObject,
Chris@441:     keys:                   keys,
Chris@441:     values:                 values,
Chris@441:     index:                  index,
Chris@441:     merge:                  merge,
Chris@441:     update:                 update,
Chris@441:     toQueryString:          toQueryString,
Chris@441:     inspect:                inspect,
Chris@441:     toJSON:                 toObject,
Chris@441:     clone:                  clone
Chris@441:   };
Chris@0: })());
Chris@0: 
Chris@0: Hash.from = $H;
Chris@441: Object.extend(Number.prototype, (function() {
Chris@441:   function toColorPart() {
Chris@441:     return this.toPaddedString(2, 16);
Chris@441:   }
Chris@441: 
Chris@441:   function succ() {
Chris@441:     return this + 1;
Chris@441:   }
Chris@441: 
Chris@441:   function times(iterator, context) {
Chris@441:     $R(0, this, true).each(iterator, context);
Chris@441:     return this;
Chris@441:   }
Chris@441: 
Chris@441:   function toPaddedString(length, radix) {
Chris@441:     var string = this.toString(radix || 10);
Chris@441:     return '0'.times(length - string.length) + string;
Chris@441:   }
Chris@441: 
Chris@441:   function abs() {
Chris@441:     return Math.abs(this);
Chris@441:   }
Chris@441: 
Chris@441:   function round() {
Chris@441:     return Math.round(this);
Chris@441:   }
Chris@441: 
Chris@441:   function ceil() {
Chris@441:     return Math.ceil(this);
Chris@441:   }
Chris@441: 
Chris@441:   function floor() {
Chris@441:     return Math.floor(this);
Chris@441:   }
Chris@441: 
Chris@441:   return {
Chris@441:     toColorPart:    toColorPart,
Chris@441:     succ:           succ,
Chris@441:     times:          times,
Chris@441:     toPaddedString: toPaddedString,
Chris@441:     abs:            abs,
Chris@441:     round:          round,
Chris@441:     ceil:           ceil,
Chris@441:     floor:          floor
Chris@441:   };
Chris@441: })());
Chris@441: 
Chris@441: function $R(start, end, exclusive) {
Chris@441:   return new ObjectRange(start, end, exclusive);
Chris@441: }
Chris@441: 
Chris@441: var ObjectRange = Class.create(Enumerable, (function() {
Chris@441:   function initialize(start, end, exclusive) {
Chris@0:     this.start = start;
Chris@0:     this.end = end;
Chris@0:     this.exclusive = exclusive;
Chris@441:   }
Chris@441: 
Chris@441:   function _each(iterator) {
Chris@0:     var value = this.start;
Chris@0:     while (this.include(value)) {
Chris@0:       iterator(value);
Chris@0:       value = value.succ();
Chris@0:     }
Chris@441:   }
Chris@441: 
Chris@441:   function include(value) {
Chris@0:     if (value < this.start)
Chris@0:       return false;
Chris@0:     if (this.exclusive)
Chris@0:       return value < this.end;
Chris@0:     return value <= this.end;
Chris@0:   }
Chris@441: 
Chris@441:   return {
Chris@441:     initialize: initialize,
Chris@441:     _each:      _each,
Chris@441:     include:    include
Chris@441:   };
Chris@441: })());
Chris@441: 
Chris@441: 
Chris@0: 
Chris@0: var Ajax = {
Chris@0:   getTransport: function() {
Chris@0:     return Try.these(
Chris@0:       function() {return new XMLHttpRequest()},
Chris@0:       function() {return new ActiveXObject('Msxml2.XMLHTTP')},
Chris@0:       function() {return new ActiveXObject('Microsoft.XMLHTTP')}
Chris@0:     ) || false;
Chris@0:   },
Chris@0: 
Chris@0:   activeRequestCount: 0
Chris@0: };
Chris@0: 
Chris@0: Ajax.Responders = {
Chris@0:   responders: [],
Chris@0: 
Chris@0:   _each: function(iterator) {
Chris@0:     this.responders._each(iterator);
Chris@0:   },
Chris@0: 
Chris@0:   register: function(responder) {
Chris@0:     if (!this.include(responder))
Chris@0:       this.responders.push(responder);
Chris@0:   },
Chris@0: 
Chris@0:   unregister: function(responder) {
Chris@0:     this.responders = this.responders.without(responder);
Chris@0:   },
Chris@0: 
Chris@0:   dispatch: function(callback, request, transport, json) {
Chris@0:     this.each(function(responder) {
Chris@0:       if (Object.isFunction(responder[callback])) {
Chris@0:         try {
Chris@0:           responder[callback].apply(responder, [request, transport, json]);
Chris@0:         } catch (e) { }
Chris@0:       }
Chris@0:     });
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: Object.extend(Ajax.Responders, Enumerable);
Chris@0: 
Chris@0: Ajax.Responders.register({
Chris@0:   onCreate:   function() { Ajax.activeRequestCount++ },
Chris@0:   onComplete: function() { Ajax.activeRequestCount-- }
Chris@0: });
Chris@0: Ajax.Base = Class.create({
Chris@0:   initialize: function(options) {
Chris@0:     this.options = {
Chris@0:       method:       'post',
Chris@0:       asynchronous: true,
Chris@0:       contentType:  'application/x-www-form-urlencoded',
Chris@0:       encoding:     'UTF-8',
Chris@0:       parameters:   '',
Chris@0:       evalJSON:     true,
Chris@0:       evalJS:       true
Chris@0:     };
Chris@0:     Object.extend(this.options, options || { });
Chris@0: 
Chris@0:     this.options.method = this.options.method.toLowerCase();
Chris@0: 
Chris@441:     if (Object.isHash(this.options.parameters))
Chris@0:       this.options.parameters = this.options.parameters.toObject();
Chris@0:   }
Chris@0: });
Chris@0: Ajax.Request = Class.create(Ajax.Base, {
Chris@0:   _complete: false,
Chris@0: 
Chris@0:   initialize: function($super, url, options) {
Chris@0:     $super(options);
Chris@0:     this.transport = Ajax.getTransport();
Chris@0:     this.request(url);
Chris@0:   },
Chris@0: 
Chris@0:   request: function(url) {
Chris@0:     this.url = url;
Chris@0:     this.method = this.options.method;
Chris@441:     var params = Object.isString(this.options.parameters) ?
Chris@441:           this.options.parameters :
Chris@441:           Object.toQueryString(this.options.parameters);
Chris@0: 
Chris@0:     if (!['get', 'post'].include(this.method)) {
Chris@441:       params += (params ? '&' : '') + "_method=" + this.method;
Chris@0:       this.method = 'post';
Chris@0:     }
Chris@0: 
Chris@441:     if (params && this.method === 'get') {
Chris@441:       this.url += (this.url.include('?') ? '&' : '?') + params;
Chris@0:     }
Chris@0: 
Chris@441:     this.parameters = params.toQueryParams();
Chris@441: 
Chris@0:     try {
Chris@0:       var response = new Ajax.Response(this);
Chris@0:       if (this.options.onCreate) this.options.onCreate(response);
Chris@0:       Ajax.Responders.dispatch('onCreate', this, response);
Chris@0: 
Chris@0:       this.transport.open(this.method.toUpperCase(), this.url,
Chris@0:         this.options.asynchronous);
Chris@0: 
Chris@0:       if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);
Chris@0: 
Chris@0:       this.transport.onreadystatechange = this.onStateChange.bind(this);
Chris@0:       this.setRequestHeaders();
Chris@0: 
Chris@0:       this.body = this.method == 'post' ? (this.options.postBody || params) : null;
Chris@0:       this.transport.send(this.body);
Chris@0: 
Chris@0:       /* Force Firefox to handle ready state 4 for synchronous requests */
Chris@0:       if (!this.options.asynchronous && this.transport.overrideMimeType)
Chris@0:         this.onStateChange();
Chris@0: 
Chris@0:     }
Chris@0:     catch (e) {
Chris@0:       this.dispatchException(e);
Chris@0:     }
Chris@0:   },
Chris@0: 
Chris@0:   onStateChange: function() {
Chris@0:     var readyState = this.transport.readyState;
Chris@0:     if (readyState > 1 && !((readyState == 4) && this._complete))
Chris@0:       this.respondToReadyState(this.transport.readyState);
Chris@0:   },
Chris@0: 
Chris@0:   setRequestHeaders: function() {
Chris@0:     var headers = {
Chris@0:       'X-Requested-With': 'XMLHttpRequest',
Chris@0:       'X-Prototype-Version': Prototype.Version,
Chris@0:       'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
Chris@0:     };
Chris@0: 
Chris@0:     if (this.method == 'post') {
Chris@0:       headers['Content-type'] = this.options.contentType +
Chris@0:         (this.options.encoding ? '; charset=' + this.options.encoding : '');
Chris@0: 
Chris@0:       /* Force "Connection: close" for older Mozilla browsers to work
Chris@0:        * around a bug where XMLHttpRequest sends an incorrect
Chris@0:        * Content-length header. See Mozilla Bugzilla #246651.
Chris@0:        */
Chris@0:       if (this.transport.overrideMimeType &&
Chris@0:           (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
Chris@0:             headers['Connection'] = 'close';
Chris@0:     }
Chris@0: 
Chris@0:     if (typeof this.options.requestHeaders == 'object') {
Chris@0:       var extras = this.options.requestHeaders;
Chris@0: 
Chris@0:       if (Object.isFunction(extras.push))
Chris@0:         for (var i = 0, length = extras.length; i < length; i += 2)
Chris@0:           headers[extras[i]] = extras[i+1];
Chris@0:       else
Chris@0:         $H(extras).each(function(pair) { headers[pair.key] = pair.value });
Chris@0:     }
Chris@0: 
Chris@0:     for (var name in headers)
Chris@0:       this.transport.setRequestHeader(name, headers[name]);
Chris@0:   },
Chris@0: 
Chris@0:   success: function() {
Chris@0:     var status = this.getStatus();
Chris@441:     return !status || (status >= 200 && status < 300) || status == 304;
Chris@0:   },
Chris@0: 
Chris@0:   getStatus: function() {
Chris@0:     try {
Chris@441:       if (this.transport.status === 1223) return 204;
Chris@0:       return this.transport.status || 0;
Chris@0:     } catch (e) { return 0 }
Chris@0:   },
Chris@0: 
Chris@0:   respondToReadyState: function(readyState) {
Chris@0:     var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);
Chris@0: 
Chris@0:     if (state == 'Complete') {
Chris@0:       try {
Chris@0:         this._complete = true;
Chris@0:         (this.options['on' + response.status]
Chris@0:          || this.options['on' + (this.success() ? 'Success' : 'Failure')]
Chris@0:          || Prototype.emptyFunction)(response, response.headerJSON);
Chris@0:       } catch (e) {
Chris@0:         this.dispatchException(e);
Chris@0:       }
Chris@0: 
Chris@0:       var contentType = response.getHeader('Content-type');
Chris@0:       if (this.options.evalJS == 'force'
Chris@0:           || (this.options.evalJS && this.isSameOrigin() && contentType
Chris@0:           && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
Chris@0:         this.evalResponse();
Chris@0:     }
Chris@0: 
Chris@0:     try {
Chris@0:       (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
Chris@0:       Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
Chris@0:     } catch (e) {
Chris@0:       this.dispatchException(e);
Chris@0:     }
Chris@0: 
Chris@0:     if (state == 'Complete') {
Chris@0:       this.transport.onreadystatechange = Prototype.emptyFunction;
Chris@0:     }
Chris@0:   },
Chris@0: 
Chris@0:   isSameOrigin: function() {
Chris@0:     var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
Chris@0:     return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
Chris@0:       protocol: location.protocol,
Chris@0:       domain: document.domain,
Chris@0:       port: location.port ? ':' + location.port : ''
Chris@0:     }));
Chris@0:   },
Chris@0: 
Chris@0:   getHeader: function(name) {
Chris@0:     try {
Chris@0:       return this.transport.getResponseHeader(name) || null;
Chris@441:     } catch (e) { return null; }
Chris@0:   },
Chris@0: 
Chris@0:   evalResponse: function() {
Chris@0:     try {
Chris@0:       return eval((this.transport.responseText || '').unfilterJSON());
Chris@0:     } catch (e) {
Chris@0:       this.dispatchException(e);
Chris@0:     }
Chris@0:   },
Chris@0: 
Chris@0:   dispatchException: function(exception) {
Chris@0:     (this.options.onException || Prototype.emptyFunction)(this, exception);
Chris@0:     Ajax.Responders.dispatch('onException', this, exception);
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Ajax.Request.Events =
Chris@0:   ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
Chris@0: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441: 
Chris@0: Ajax.Response = Class.create({
Chris@0:   initialize: function(request){
Chris@0:     this.request = request;
Chris@0:     var transport  = this.transport  = request.transport,
Chris@0:         readyState = this.readyState = transport.readyState;
Chris@0: 
Chris@441:     if ((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
Chris@0:       this.status       = this.getStatus();
Chris@0:       this.statusText   = this.getStatusText();
Chris@0:       this.responseText = String.interpret(transport.responseText);
Chris@0:       this.headerJSON   = this._getHeaderJSON();
Chris@0:     }
Chris@0: 
Chris@441:     if (readyState == 4) {
Chris@0:       var xml = transport.responseXML;
Chris@0:       this.responseXML  = Object.isUndefined(xml) ? null : xml;
Chris@0:       this.responseJSON = this._getResponseJSON();
Chris@0:     }
Chris@0:   },
Chris@0: 
Chris@0:   status:      0,
Chris@441: 
Chris@0:   statusText: '',
Chris@0: 
Chris@0:   getStatus: Ajax.Request.prototype.getStatus,
Chris@0: 
Chris@0:   getStatusText: function() {
Chris@0:     try {
Chris@0:       return this.transport.statusText || '';
Chris@0:     } catch (e) { return '' }
Chris@0:   },
Chris@0: 
Chris@0:   getHeader: Ajax.Request.prototype.getHeader,
Chris@0: 
Chris@0:   getAllHeaders: function() {
Chris@0:     try {
Chris@0:       return this.getAllResponseHeaders();
Chris@0:     } catch (e) { return null }
Chris@0:   },
Chris@0: 
Chris@0:   getResponseHeader: function(name) {
Chris@0:     return this.transport.getResponseHeader(name);
Chris@0:   },
Chris@0: 
Chris@0:   getAllResponseHeaders: function() {
Chris@0:     return this.transport.getAllResponseHeaders();
Chris@0:   },
Chris@0: 
Chris@0:   _getHeaderJSON: function() {
Chris@0:     var json = this.getHeader('X-JSON');
Chris@0:     if (!json) return null;
Chris@0:     json = decodeURIComponent(escape(json));
Chris@0:     try {
Chris@0:       return json.evalJSON(this.request.options.sanitizeJSON ||
Chris@0:         !this.request.isSameOrigin());
Chris@0:     } catch (e) {
Chris@0:       this.request.dispatchException(e);
Chris@0:     }
Chris@0:   },
Chris@0: 
Chris@0:   _getResponseJSON: function() {
Chris@0:     var options = this.request.options;
Chris@0:     if (!options.evalJSON || (options.evalJSON != 'force' &&
Chris@0:       !(this.getHeader('Content-type') || '').include('application/json')) ||
Chris@0:         this.responseText.blank())
Chris@0:           return null;
Chris@0:     try {
Chris@0:       return this.responseText.evalJSON(options.sanitizeJSON ||
Chris@0:         !this.request.isSameOrigin());
Chris@0:     } catch (e) {
Chris@0:       this.request.dispatchException(e);
Chris@0:     }
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Ajax.Updater = Class.create(Ajax.Request, {
Chris@0:   initialize: function($super, container, url, options) {
Chris@0:     this.container = {
Chris@0:       success: (container.success || container),
Chris@0:       failure: (container.failure || (container.success ? null : container))
Chris@0:     };
Chris@0: 
Chris@0:     options = Object.clone(options);
Chris@0:     var onComplete = options.onComplete;
Chris@0:     options.onComplete = (function(response, json) {
Chris@0:       this.updateContent(response.responseText);
Chris@0:       if (Object.isFunction(onComplete)) onComplete(response, json);
Chris@0:     }).bind(this);
Chris@0: 
Chris@0:     $super(url, options);
Chris@0:   },
Chris@0: 
Chris@0:   updateContent: function(responseText) {
Chris@0:     var receiver = this.container[this.success() ? 'success' : 'failure'],
Chris@0:         options = this.options;
Chris@0: 
Chris@0:     if (!options.evalScripts) responseText = responseText.stripScripts();
Chris@0: 
Chris@0:     if (receiver = $(receiver)) {
Chris@0:       if (options.insertion) {
Chris@0:         if (Object.isString(options.insertion)) {
Chris@0:           var insertion = { }; insertion[options.insertion] = responseText;
Chris@0:           receiver.insert(insertion);
Chris@0:         }
Chris@0:         else options.insertion(receiver, responseText);
Chris@0:       }
Chris@0:       else receiver.update(responseText);
Chris@0:     }
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
Chris@0:   initialize: function($super, container, url, options) {
Chris@0:     $super(options);
Chris@0:     this.onComplete = this.options.onComplete;
Chris@0: 
Chris@0:     this.frequency = (this.options.frequency || 2);
Chris@0:     this.decay = (this.options.decay || 1);
Chris@0: 
Chris@0:     this.updater = { };
Chris@0:     this.container = container;
Chris@0:     this.url = url;
Chris@0: 
Chris@0:     this.start();
Chris@0:   },
Chris@0: 
Chris@0:   start: function() {
Chris@0:     this.options.onComplete = this.updateComplete.bind(this);
Chris@0:     this.onTimerEvent();
Chris@0:   },
Chris@0: 
Chris@0:   stop: function() {
Chris@0:     this.updater.options.onComplete = undefined;
Chris@0:     clearTimeout(this.timer);
Chris@0:     (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
Chris@0:   },
Chris@0: 
Chris@0:   updateComplete: function(response) {
Chris@0:     if (this.options.decay) {
Chris@0:       this.decay = (response.responseText == this.lastText ?
Chris@0:         this.decay * this.options.decay : 1);
Chris@0: 
Chris@0:       this.lastText = response.responseText;
Chris@0:     }
Chris@0:     this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
Chris@0:   },
Chris@0: 
Chris@0:   onTimerEvent: function() {
Chris@0:     this.updater = new Ajax.Updater(this.container, this.url, this.options);
Chris@0:   }
Chris@0: });
Chris@441: 
Chris@441: 
Chris@0: function $(element) {
Chris@0:   if (arguments.length > 1) {
Chris@0:     for (var i = 0, elements = [], length = arguments.length; i < length; i++)
Chris@0:       elements.push($(arguments[i]));
Chris@0:     return elements;
Chris@0:   }
Chris@0:   if (Object.isString(element))
Chris@0:     element = document.getElementById(element);
Chris@0:   return Element.extend(element);
Chris@0: }
Chris@0: 
Chris@0: if (Prototype.BrowserFeatures.XPath) {
Chris@0:   document._getElementsByXPath = function(expression, parentElement) {
Chris@0:     var results = [];
Chris@0:     var query = document.evaluate(expression, $(parentElement) || document,
Chris@0:       null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
Chris@0:     for (var i = 0, length = query.snapshotLength; i < length; i++)
Chris@0:       results.push(Element.extend(query.snapshotItem(i)));
Chris@0:     return results;
Chris@0:   };
Chris@0: }
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@441: if (!Node) var Node = { };
Chris@0: 
Chris@0: if (!Node.ELEMENT_NODE) {
Chris@0:   Object.extend(Node, {
Chris@0:     ELEMENT_NODE: 1,
Chris@0:     ATTRIBUTE_NODE: 2,
Chris@0:     TEXT_NODE: 3,
Chris@0:     CDATA_SECTION_NODE: 4,
Chris@0:     ENTITY_REFERENCE_NODE: 5,
Chris@0:     ENTITY_NODE: 6,
Chris@0:     PROCESSING_INSTRUCTION_NODE: 7,
Chris@0:     COMMENT_NODE: 8,
Chris@0:     DOCUMENT_NODE: 9,
Chris@0:     DOCUMENT_TYPE_NODE: 10,
Chris@0:     DOCUMENT_FRAGMENT_NODE: 11,
Chris@0:     NOTATION_NODE: 12
Chris@0:   });
Chris@0: }
Chris@0: 
Chris@441: 
Chris@441: 
Chris@441: (function(global) {
Chris@441:   function shouldUseCache(tagName, attributes) {
Chris@441:     if (tagName === 'select') return false;
Chris@441:     if ('type' in attributes) return false;
Chris@441:     return true;
Chris@441:   }
Chris@441: 
Chris@441:   var HAS_EXTENDED_CREATE_ELEMENT_SYNTAX = (function(){
Chris@441:     try {
Chris@441:       var el = document.createElement('<input name="x">');
Chris@441:       return el.tagName.toLowerCase() === 'input' && el.name === 'x';
Chris@441:     }
Chris@441:     catch(err) {
Chris@441:       return false;
Chris@441:     }
Chris@441:   })();
Chris@441: 
Chris@441:   var element = global.Element;
Chris@441: 
Chris@441:   global.Element = function(tagName, attributes) {
Chris@0:     attributes = attributes || { };
Chris@0:     tagName = tagName.toLowerCase();
Chris@0:     var cache = Element.cache;
Chris@441: 
Chris@441:     if (HAS_EXTENDED_CREATE_ELEMENT_SYNTAX && attributes.name) {
Chris@0:       tagName = '<' + tagName + ' name="' + attributes.name + '">';
Chris@0:       delete attributes.name;
Chris@0:       return Element.writeAttribute(document.createElement(tagName), attributes);
Chris@0:     }
Chris@441: 
Chris@0:     if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
Chris@441: 
Chris@441:     var node = shouldUseCache(tagName, attributes) ?
Chris@441:      cache[tagName].cloneNode(false) : document.createElement(tagName);
Chris@441: 
Chris@441:     return Element.writeAttribute(node, attributes);
Chris@0:   };
Chris@441: 
Chris@441:   Object.extend(global.Element, element || { });
Chris@441:   if (element) global.Element.prototype = element.prototype;
Chris@441: 
Chris@441: })(this);
Chris@441: 
Chris@441: Element.idCounter = 1;
Chris@0: Element.cache = { };
Chris@0: 
Chris@441: Element._purgeElement = function(element) {
Chris@441:   var uid = element._prototypeUID;
Chris@441:   if (uid) {
Chris@441:     Element.stopObserving(element);
Chris@441:     element._prototypeUID = void 0;
Chris@441:     delete Element.Storage[uid];
Chris@441:   }
Chris@441: }
Chris@441: 
Chris@0: Element.Methods = {
Chris@0:   visible: function(element) {
Chris@0:     return $(element).style.display != 'none';
Chris@0:   },
Chris@0: 
Chris@0:   toggle: function(element) {
Chris@0:     element = $(element);
Chris@0:     Element[Element.visible(element) ? 'hide' : 'show'](element);
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   hide: function(element) {
Chris@0:     element = $(element);
Chris@0:     element.style.display = 'none';
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   show: function(element) {
Chris@0:     element = $(element);
Chris@0:     element.style.display = '';
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   remove: function(element) {
Chris@0:     element = $(element);
Chris@0:     element.parentNode.removeChild(element);
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@441:   update: (function(){
Chris@441: 
Chris@441:     var SELECT_ELEMENT_INNERHTML_BUGGY = (function(){
Chris@441:       var el = document.createElement("select"),
Chris@441:           isBuggy = true;
Chris@441:       el.innerHTML = "<option value=\"test\">test</option>";
Chris@441:       if (el.options && el.options[0]) {
Chris@441:         isBuggy = el.options[0].nodeName.toUpperCase() !== "OPTION";
Chris@441:       }
Chris@441:       el = null;
Chris@441:       return isBuggy;
Chris@441:     })();
Chris@441: 
Chris@441:     var TABLE_ELEMENT_INNERHTML_BUGGY = (function(){
Chris@441:       try {
Chris@441:         var el = document.createElement("table");
Chris@441:         if (el && el.tBodies) {
Chris@441:           el.innerHTML = "<tbody><tr><td>test</td></tr></tbody>";
Chris@441:           var isBuggy = typeof el.tBodies[0] == "undefined";
Chris@441:           el = null;
Chris@441:           return isBuggy;
Chris@441:         }
Chris@441:       } catch (e) {
Chris@441:         return true;
Chris@441:       }
Chris@441:     })();
Chris@441: 
Chris@441:     var LINK_ELEMENT_INNERHTML_BUGGY = (function() {
Chris@441:       try {
Chris@441:         var el = document.createElement('div');
Chris@441:         el.innerHTML = "<link>";
Chris@441:         var isBuggy = (el.childNodes.length === 0);
Chris@441:         el = null;
Chris@441:         return isBuggy;
Chris@441:       } catch(e) {
Chris@441:         return true;
Chris@441:       }
Chris@441:     })();
Chris@441: 
Chris@441:     var ANY_INNERHTML_BUGGY = SELECT_ELEMENT_INNERHTML_BUGGY ||
Chris@441:      TABLE_ELEMENT_INNERHTML_BUGGY || LINK_ELEMENT_INNERHTML_BUGGY;
Chris@441: 
Chris@441:     var SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING = (function () {
Chris@441:       var s = document.createElement("script"),
Chris@441:           isBuggy = false;
Chris@441:       try {
Chris@441:         s.appendChild(document.createTextNode(""));
Chris@441:         isBuggy = !s.firstChild ||
Chris@441:           s.firstChild && s.firstChild.nodeType !== 3;
Chris@441:       } catch (e) {
Chris@441:         isBuggy = true;
Chris@441:       }
Chris@441:       s = null;
Chris@441:       return isBuggy;
Chris@441:     })();
Chris@441: 
Chris@441: 
Chris@441:     function update(element, content) {
Chris@441:       element = $(element);
Chris@441:       var purgeElement = Element._purgeElement;
Chris@441: 
Chris@441:       var descendants = element.getElementsByTagName('*'),
Chris@441:        i = descendants.length;
Chris@441:       while (i--) purgeElement(descendants[i]);
Chris@441: 
Chris@441:       if (content && content.toElement)
Chris@441:         content = content.toElement();
Chris@441: 
Chris@441:       if (Object.isElement(content))
Chris@441:         return element.update().insert(content);
Chris@441: 
Chris@441:       content = Object.toHTML(content);
Chris@441: 
Chris@441:       var tagName = element.tagName.toUpperCase();
Chris@441: 
Chris@441:       if (tagName === 'SCRIPT' && SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING) {
Chris@441:         element.text = content;
Chris@441:         return element;
Chris@441:       }
Chris@441: 
Chris@441:       if (ANY_INNERHTML_BUGGY) {
Chris@441:         if (tagName in Element._insertionTranslations.tags) {
Chris@441:           while (element.firstChild) {
Chris@441:             element.removeChild(element.firstChild);
Chris@441:           }
Chris@441:           Element._getContentFromAnonymousElement(tagName, content.stripScripts())
Chris@441:             .each(function(node) {
Chris@441:               element.appendChild(node)
Chris@441:             });
Chris@441:         } else if (LINK_ELEMENT_INNERHTML_BUGGY && Object.isString(content) && content.indexOf('<link') > -1) {
Chris@441:           while (element.firstChild) {
Chris@441:             element.removeChild(element.firstChild);
Chris@441:           }
Chris@441:           var nodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts(), true);
Chris@441:           nodes.each(function(node) { element.appendChild(node) });
Chris@441:         }
Chris@441:         else {
Chris@441:           element.innerHTML = content.stripScripts();
Chris@441:         }
Chris@441:       }
Chris@441:       else {
Chris@441:         element.innerHTML = content.stripScripts();
Chris@441:       }
Chris@441: 
Chris@441:       content.evalScripts.bind(content).defer();
Chris@441:       return element;
Chris@441:     }
Chris@441: 
Chris@441:     return update;
Chris@441:   })(),
Chris@0: 
Chris@0:   replace: function(element, content) {
Chris@0:     element = $(element);
Chris@0:     if (content && content.toElement) content = content.toElement();
Chris@0:     else if (!Object.isElement(content)) {
Chris@0:       content = Object.toHTML(content);
Chris@0:       var range = element.ownerDocument.createRange();
Chris@0:       range.selectNode(element);
Chris@0:       content.evalScripts.bind(content).defer();
Chris@0:       content = range.createContextualFragment(content.stripScripts());
Chris@0:     }
Chris@0:     element.parentNode.replaceChild(content, element);
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   insert: function(element, insertions) {
Chris@0:     element = $(element);
Chris@0: 
Chris@0:     if (Object.isString(insertions) || Object.isNumber(insertions) ||
Chris@0:         Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
Chris@0:           insertions = {bottom:insertions};
Chris@0: 
Chris@0:     var content, insert, tagName, childNodes;
Chris@0: 
Chris@0:     for (var position in insertions) {
Chris@0:       content  = insertions[position];
Chris@0:       position = position.toLowerCase();
Chris@0:       insert = Element._insertionTranslations[position];
Chris@0: 
Chris@0:       if (content && content.toElement) content = content.toElement();
Chris@0:       if (Object.isElement(content)) {
Chris@0:         insert(element, content);
Chris@0:         continue;
Chris@0:       }
Chris@0: 
Chris@0:       content = Object.toHTML(content);
Chris@0: 
Chris@0:       tagName = ((position == 'before' || position == 'after')
Chris@0:         ? element.parentNode : element).tagName.toUpperCase();
Chris@0: 
Chris@0:       childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
Chris@0: 
Chris@0:       if (position == 'top' || position == 'after') childNodes.reverse();
Chris@0:       childNodes.each(insert.curry(element));
Chris@0: 
Chris@0:       content.evalScripts.bind(content).defer();
Chris@0:     }
Chris@0: 
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   wrap: function(element, wrapper, attributes) {
Chris@0:     element = $(element);
Chris@0:     if (Object.isElement(wrapper))
Chris@0:       $(wrapper).writeAttribute(attributes || { });
Chris@0:     else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
Chris@0:     else wrapper = new Element('div', wrapper);
Chris@0:     if (element.parentNode)
Chris@0:       element.parentNode.replaceChild(wrapper, element);
Chris@0:     wrapper.appendChild(element);
Chris@0:     return wrapper;
Chris@0:   },
Chris@0: 
Chris@0:   inspect: function(element) {
Chris@0:     element = $(element);
Chris@0:     var result = '<' + element.tagName.toLowerCase();
Chris@0:     $H({'id': 'id', 'className': 'class'}).each(function(pair) {
Chris@441:       var property = pair.first(),
Chris@441:           attribute = pair.last(),
Chris@441:           value = (element[property] || '').toString();
Chris@0:       if (value) result += ' ' + attribute + '=' + value.inspect(true);
Chris@0:     });
Chris@0:     return result + '>';
Chris@0:   },
Chris@0: 
Chris@441:   recursivelyCollect: function(element, property, maximumLength) {
Chris@0:     element = $(element);
Chris@441:     maximumLength = maximumLength || -1;
Chris@0:     var elements = [];
Chris@441: 
Chris@441:     while (element = element[property]) {
Chris@0:       if (element.nodeType == 1)
Chris@0:         elements.push(Element.extend(element));
Chris@441:       if (elements.length == maximumLength)
Chris@441:         break;
Chris@441:     }
Chris@441: 
Chris@0:     return elements;
Chris@0:   },
Chris@0: 
Chris@0:   ancestors: function(element) {
Chris@441:     return Element.recursivelyCollect(element, 'parentNode');
Chris@0:   },
Chris@0: 
Chris@0:   descendants: function(element) {
Chris@441:     return Element.select(element, "*");
Chris@0:   },
Chris@0: 
Chris@0:   firstDescendant: function(element) {
Chris@0:     element = $(element).firstChild;
Chris@0:     while (element && element.nodeType != 1) element = element.nextSibling;
Chris@0:     return $(element);
Chris@0:   },
Chris@0: 
Chris@0:   immediateDescendants: function(element) {
Chris@441:     var results = [], child = $(element).firstChild;
Chris@441:     while (child) {
Chris@441:       if (child.nodeType === 1) {
Chris@441:         results.push(Element.extend(child));
Chris@441:       }
Chris@441:       child = child.nextSibling;
Chris@441:     }
Chris@441:     return results;
Chris@0:   },
Chris@0: 
Chris@441:   previousSiblings: function(element, maximumLength) {
Chris@441:     return Element.recursivelyCollect(element, 'previousSibling');
Chris@0:   },
Chris@0: 
Chris@0:   nextSiblings: function(element) {
Chris@441:     return Element.recursivelyCollect(element, 'nextSibling');
Chris@0:   },
Chris@0: 
Chris@0:   siblings: function(element) {
Chris@0:     element = $(element);
Chris@441:     return Element.previousSiblings(element).reverse()
Chris@441:       .concat(Element.nextSiblings(element));
Chris@0:   },
Chris@0: 
Chris@0:   match: function(element, selector) {
Chris@441:     element = $(element);
Chris@0:     if (Object.isString(selector))
Chris@441:       return Prototype.Selector.match(element, selector);
Chris@441:     return selector.match(element);
Chris@0:   },
Chris@0: 
Chris@0:   up: function(element, expression, index) {
Chris@0:     element = $(element);
Chris@0:     if (arguments.length == 1) return $(element.parentNode);
Chris@441:     var ancestors = Element.ancestors(element);
Chris@0:     return Object.isNumber(expression) ? ancestors[expression] :
Chris@441:       Prototype.Selector.find(ancestors, expression, index);
Chris@0:   },
Chris@0: 
Chris@0:   down: function(element, expression, index) {
Chris@0:     element = $(element);
Chris@441:     if (arguments.length == 1) return Element.firstDescendant(element);
Chris@441:     return Object.isNumber(expression) ? Element.descendants(element)[expression] :
Chris@0:       Element.select(element, expression)[index || 0];
Chris@0:   },
Chris@0: 
Chris@0:   previous: function(element, expression, index) {
Chris@0:     element = $(element);
Chris@441:     if (Object.isNumber(expression)) index = expression, expression = false;
Chris@441:     if (!Object.isNumber(index)) index = 0;
Chris@441: 
Chris@441:     if (expression) {
Chris@441:       return Prototype.Selector.find(element.previousSiblings(), expression, index);
Chris@441:     } else {
Chris@441:       return element.recursivelyCollect("previousSibling", index + 1)[index];
Chris@441:     }
Chris@0:   },
Chris@0: 
Chris@0:   next: function(element, expression, index) {
Chris@0:     element = $(element);
Chris@441:     if (Object.isNumber(expression)) index = expression, expression = false;
Chris@441:     if (!Object.isNumber(index)) index = 0;
Chris@441: 
Chris@441:     if (expression) {
Chris@441:       return Prototype.Selector.find(element.nextSiblings(), expression, index);
Chris@441:     } else {
Chris@441:       var maximumLength = Object.isNumber(index) ? index + 1 : 1;
Chris@441:       return element.recursivelyCollect("nextSibling", index + 1)[index];
Chris@441:     }
Chris@0:   },
Chris@0: 
Chris@441: 
Chris@441:   select: function(element) {
Chris@441:     element = $(element);
Chris@441:     var expressions = Array.prototype.slice.call(arguments, 1).join(', ');
Chris@441:     return Prototype.Selector.select(expressions, element);
Chris@0:   },
Chris@0: 
Chris@441:   adjacent: function(element) {
Chris@441:     element = $(element);
Chris@441:     var expressions = Array.prototype.slice.call(arguments, 1).join(', ');
Chris@441:     return Prototype.Selector.select(expressions, element.parentNode).without(element);
Chris@0:   },
Chris@0: 
Chris@0:   identify: function(element) {
Chris@0:     element = $(element);
Chris@441:     var id = Element.readAttribute(element, 'id');
Chris@0:     if (id) return id;
Chris@441:     do { id = 'anonymous_element_' + Element.idCounter++ } while ($(id));
Chris@441:     Element.writeAttribute(element, 'id', id);
Chris@0:     return id;
Chris@0:   },
Chris@0: 
Chris@0:   readAttribute: function(element, name) {
Chris@0:     element = $(element);
Chris@0:     if (Prototype.Browser.IE) {
Chris@0:       var t = Element._attributeTranslations.read;
Chris@0:       if (t.values[name]) return t.values[name](element, name);
Chris@0:       if (t.names[name]) name = t.names[name];
Chris@0:       if (name.include(':')) {
Chris@0:         return (!element.attributes || !element.attributes[name]) ? null :
Chris@0:          element.attributes[name].value;
Chris@0:       }
Chris@0:     }
Chris@0:     return element.getAttribute(name);
Chris@0:   },
Chris@0: 
Chris@0:   writeAttribute: function(element, name, value) {
Chris@0:     element = $(element);
Chris@0:     var attributes = { }, t = Element._attributeTranslations.write;
Chris@0: 
Chris@0:     if (typeof name == 'object') attributes = name;
Chris@0:     else attributes[name] = Object.isUndefined(value) ? true : value;
Chris@0: 
Chris@0:     for (var attr in attributes) {
Chris@0:       name = t.names[attr] || attr;
Chris@0:       value = attributes[attr];
Chris@0:       if (t.values[attr]) name = t.values[attr](element, value);
Chris@0:       if (value === false || value === null)
Chris@0:         element.removeAttribute(name);
Chris@0:       else if (value === true)
Chris@0:         element.setAttribute(name, name);
Chris@0:       else element.setAttribute(name, value);
Chris@0:     }
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   getHeight: function(element) {
Chris@441:     return Element.getDimensions(element).height;
Chris@0:   },
Chris@0: 
Chris@0:   getWidth: function(element) {
Chris@441:     return Element.getDimensions(element).width;
Chris@0:   },
Chris@0: 
Chris@0:   classNames: function(element) {
Chris@0:     return new Element.ClassNames(element);
Chris@0:   },
Chris@0: 
Chris@0:   hasClassName: function(element, className) {
Chris@0:     if (!(element = $(element))) return;
Chris@0:     var elementClassName = element.className;
Chris@0:     return (elementClassName.length > 0 && (elementClassName == className ||
Chris@0:       new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
Chris@0:   },
Chris@0: 
Chris@0:   addClassName: function(element, className) {
Chris@0:     if (!(element = $(element))) return;
Chris@441:     if (!Element.hasClassName(element, className))
Chris@0:       element.className += (element.className ? ' ' : '') + className;
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   removeClassName: function(element, className) {
Chris@0:     if (!(element = $(element))) return;
Chris@0:     element.className = element.className.replace(
Chris@0:       new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   toggleClassName: function(element, className) {
Chris@0:     if (!(element = $(element))) return;
Chris@441:     return Element[Element.hasClassName(element, className) ?
Chris@441:       'removeClassName' : 'addClassName'](element, className);
Chris@0:   },
Chris@0: 
Chris@0:   cleanWhitespace: function(element) {
Chris@0:     element = $(element);
Chris@0:     var node = element.firstChild;
Chris@0:     while (node) {
Chris@0:       var nextNode = node.nextSibling;
Chris@0:       if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
Chris@0:         element.removeChild(node);
Chris@0:       node = nextNode;
Chris@0:     }
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   empty: function(element) {
Chris@0:     return $(element).innerHTML.blank();
Chris@0:   },
Chris@0: 
Chris@0:   descendantOf: function(element, ancestor) {
Chris@0:     element = $(element), ancestor = $(ancestor);
Chris@0: 
Chris@0:     if (element.compareDocumentPosition)
Chris@0:       return (element.compareDocumentPosition(ancestor) & 8) === 8;
Chris@0: 
Chris@0:     if (ancestor.contains)
Chris@0:       return ancestor.contains(element) && ancestor !== element;
Chris@0: 
Chris@0:     while (element = element.parentNode)
Chris@0:       if (element == ancestor) return true;
Chris@0: 
Chris@0:     return false;
Chris@0:   },
Chris@0: 
Chris@0:   scrollTo: function(element) {
Chris@0:     element = $(element);
Chris@441:     var pos = Element.cumulativeOffset(element);
Chris@0:     window.scrollTo(pos[0], pos[1]);
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   getStyle: function(element, style) {
Chris@0:     element = $(element);
Chris@0:     style = style == 'float' ? 'cssFloat' : style.camelize();
Chris@0:     var value = element.style[style];
Chris@0:     if (!value || value == 'auto') {
Chris@0:       var css = document.defaultView.getComputedStyle(element, null);
Chris@0:       value = css ? css[style] : null;
Chris@0:     }
Chris@0:     if (style == 'opacity') return value ? parseFloat(value) : 1.0;
Chris@0:     return value == 'auto' ? null : value;
Chris@0:   },
Chris@0: 
Chris@0:   getOpacity: function(element) {
Chris@0:     return $(element).getStyle('opacity');
Chris@0:   },
Chris@0: 
Chris@0:   setStyle: function(element, styles) {
Chris@0:     element = $(element);
Chris@0:     var elementStyle = element.style, match;
Chris@0:     if (Object.isString(styles)) {
Chris@0:       element.style.cssText += ';' + styles;
Chris@0:       return styles.include('opacity') ?
Chris@0:         element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
Chris@0:     }
Chris@0:     for (var property in styles)
Chris@0:       if (property == 'opacity') element.setOpacity(styles[property]);
Chris@0:       else
Chris@0:         elementStyle[(property == 'float' || property == 'cssFloat') ?
Chris@0:           (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
Chris@0:             property] = styles[property];
Chris@0: 
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   setOpacity: function(element, value) {
Chris@0:     element = $(element);
Chris@0:     element.style.opacity = (value == 1 || value === '') ? '' :
Chris@0:       (value < 0.00001) ? 0 : value;
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   makePositioned: function(element) {
Chris@0:     element = $(element);
Chris@0:     var pos = Element.getStyle(element, 'position');
Chris@0:     if (pos == 'static' || !pos) {
Chris@0:       element._madePositioned = true;
Chris@0:       element.style.position = 'relative';
Chris@0:       if (Prototype.Browser.Opera) {
Chris@0:         element.style.top = 0;
Chris@0:         element.style.left = 0;
Chris@0:       }
Chris@0:     }
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   undoPositioned: function(element) {
Chris@0:     element = $(element);
Chris@0:     if (element._madePositioned) {
Chris@0:       element._madePositioned = undefined;
Chris@0:       element.style.position =
Chris@0:         element.style.top =
Chris@0:         element.style.left =
Chris@0:         element.style.bottom =
Chris@0:         element.style.right = '';
Chris@0:     }
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   makeClipping: function(element) {
Chris@0:     element = $(element);
Chris@0:     if (element._overflow) return element;
Chris@0:     element._overflow = Element.getStyle(element, 'overflow') || 'auto';
Chris@0:     if (element._overflow !== 'hidden')
Chris@0:       element.style.overflow = 'hidden';
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   undoClipping: function(element) {
Chris@0:     element = $(element);
Chris@0:     if (!element._overflow) return element;
Chris@0:     element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
Chris@0:     element._overflow = null;
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   clonePosition: function(element, source) {
Chris@0:     var options = Object.extend({
Chris@0:       setLeft:    true,
Chris@0:       setTop:     true,
Chris@0:       setWidth:   true,
Chris@0:       setHeight:  true,
Chris@0:       offsetTop:  0,
Chris@0:       offsetLeft: 0
Chris@0:     }, arguments[2] || { });
Chris@0: 
Chris@0:     source = $(source);
Chris@441:     var p = Element.viewportOffset(source), delta = [0, 0], parent = null;
Chris@441: 
Chris@0:     element = $(element);
Chris@441: 
Chris@0:     if (Element.getStyle(element, 'position') == 'absolute') {
Chris@441:       parent = Element.getOffsetParent(element);
Chris@441:       delta = Element.viewportOffset(parent);
Chris@0:     }
Chris@0: 
Chris@0:     if (parent == document.body) {
Chris@0:       delta[0] -= document.body.offsetLeft;
Chris@0:       delta[1] -= document.body.offsetTop;
Chris@0:     }
Chris@0: 
Chris@0:     if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
Chris@0:     if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
Chris@0:     if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
Chris@0:     if (options.setHeight) element.style.height = source.offsetHeight + 'px';
Chris@0:     return element;
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: Object.extend(Element.Methods, {
Chris@0:   getElementsBySelector: Element.Methods.select,
Chris@441: 
Chris@0:   childElements: Element.Methods.immediateDescendants
Chris@0: });
Chris@0: 
Chris@0: Element._attributeTranslations = {
Chris@0:   write: {
Chris@0:     names: {
Chris@0:       className: 'class',
Chris@0:       htmlFor:   'for'
Chris@0:     },
Chris@0:     values: { }
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: if (Prototype.Browser.Opera) {
Chris@0:   Element.Methods.getStyle = Element.Methods.getStyle.wrap(
Chris@0:     function(proceed, element, style) {
Chris@0:       switch (style) {
Chris@0:         case 'height': case 'width':
Chris@0:           if (!Element.visible(element)) return null;
Chris@0: 
Chris@0:           var dim = parseInt(proceed(element, style), 10);
Chris@0: 
Chris@0:           if (dim !== element['offset' + style.capitalize()])
Chris@0:             return dim + 'px';
Chris@0: 
Chris@0:           var properties;
Chris@0:           if (style === 'height') {
Chris@0:             properties = ['border-top-width', 'padding-top',
Chris@0:              'padding-bottom', 'border-bottom-width'];
Chris@0:           }
Chris@0:           else {
Chris@0:             properties = ['border-left-width', 'padding-left',
Chris@0:              'padding-right', 'border-right-width'];
Chris@0:           }
Chris@0:           return properties.inject(dim, function(memo, property) {
Chris@0:             var val = proceed(element, property);
Chris@0:             return val === null ? memo : memo - parseInt(val, 10);
Chris@0:           }) + 'px';
Chris@0:         default: return proceed(element, style);
Chris@0:       }
Chris@0:     }
Chris@0:   );
Chris@0: 
Chris@0:   Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
Chris@0:     function(proceed, element, attribute) {
Chris@0:       if (attribute === 'title') return element.title;
Chris@0:       return proceed(element, attribute);
Chris@0:     }
Chris@0:   );
Chris@0: }
Chris@0: 
Chris@0: else if (Prototype.Browser.IE) {
Chris@0:   Element.Methods.getStyle = function(element, style) {
Chris@0:     element = $(element);
Chris@0:     style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
Chris@0:     var value = element.style[style];
Chris@0:     if (!value && element.currentStyle) value = element.currentStyle[style];
Chris@0: 
Chris@0:     if (style == 'opacity') {
Chris@0:       if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
Chris@0:         if (value[1]) return parseFloat(value[1]) / 100;
Chris@0:       return 1.0;
Chris@0:     }
Chris@0: 
Chris@0:     if (value == 'auto') {
Chris@0:       if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
Chris@0:         return element['offset' + style.capitalize()] + 'px';
Chris@0:       return null;
Chris@0:     }
Chris@0:     return value;
Chris@0:   };
Chris@0: 
Chris@0:   Element.Methods.setOpacity = function(element, value) {
Chris@0:     function stripAlpha(filter){
Chris@0:       return filter.replace(/alpha\([^\)]*\)/gi,'');
Chris@0:     }
Chris@0:     element = $(element);
Chris@0:     var currentStyle = element.currentStyle;
Chris@0:     if ((currentStyle && !currentStyle.hasLayout) ||
Chris@0:       (!currentStyle && element.style.zoom == 'normal'))
Chris@0:         element.style.zoom = 1;
Chris@0: 
Chris@0:     var filter = element.getStyle('filter'), style = element.style;
Chris@0:     if (value == 1 || value === '') {
Chris@0:       (filter = stripAlpha(filter)) ?
Chris@0:         style.filter = filter : style.removeAttribute('filter');
Chris@0:       return element;
Chris@0:     } else if (value < 0.00001) value = 0;
Chris@0:     style.filter = stripAlpha(filter) +
Chris@0:       'alpha(opacity=' + (value * 100) + ')';
Chris@0:     return element;
Chris@0:   };
Chris@0: 
Chris@441:   Element._attributeTranslations = (function(){
Chris@441: 
Chris@441:     var classProp = 'className',
Chris@441:         forProp = 'for',
Chris@441:         el = document.createElement('div');
Chris@441: 
Chris@441:     el.setAttribute(classProp, 'x');
Chris@441: 
Chris@441:     if (el.className !== 'x') {
Chris@441:       el.setAttribute('class', 'x');
Chris@441:       if (el.className === 'x') {
Chris@441:         classProp = 'class';
Chris@441:       }
Chris@441:     }
Chris@441:     el = null;
Chris@441: 
Chris@441:     el = document.createElement('label');
Chris@441:     el.setAttribute(forProp, 'x');
Chris@441:     if (el.htmlFor !== 'x') {
Chris@441:       el.setAttribute('htmlFor', 'x');
Chris@441:       if (el.htmlFor === 'x') {
Chris@441:         forProp = 'htmlFor';
Chris@441:       }
Chris@441:     }
Chris@441:     el = null;
Chris@441: 
Chris@441:     return {
Chris@441:       read: {
Chris@441:         names: {
Chris@441:           'class':      classProp,
Chris@441:           'className':  classProp,
Chris@441:           'for':        forProp,
Chris@441:           'htmlFor':    forProp
Chris@0:         },
Chris@441:         values: {
Chris@441:           _getAttr: function(element, attribute) {
Chris@441:             return element.getAttribute(attribute);
Chris@441:           },
Chris@441:           _getAttr2: function(element, attribute) {
Chris@441:             return element.getAttribute(attribute, 2);
Chris@441:           },
Chris@441:           _getAttrNode: function(element, attribute) {
Chris@441:             var node = element.getAttributeNode(attribute);
Chris@441:             return node ? node.value : "";
Chris@441:           },
Chris@441:           _getEv: (function(){
Chris@441: 
Chris@441:             var el = document.createElement('div'), f;
Chris@441:             el.onclick = Prototype.emptyFunction;
Chris@441:             var value = el.getAttribute('onclick');
Chris@441: 
Chris@441:             if (String(value).indexOf('{') > -1) {
Chris@441:               f = function(element, attribute) {
Chris@441:                 attribute = element.getAttribute(attribute);
Chris@441:                 if (!attribute) return null;
Chris@441:                 attribute = attribute.toString();
Chris@441:                 attribute = attribute.split('{')[1];
Chris@441:                 attribute = attribute.split('}')[0];
Chris@441:                 return attribute.strip();
Chris@441:               };
Chris@441:             }
Chris@441:             else if (value === '') {
Chris@441:               f = function(element, attribute) {
Chris@441:                 attribute = element.getAttribute(attribute);
Chris@441:                 if (!attribute) return null;
Chris@441:                 return attribute.strip();
Chris@441:               };
Chris@441:             }
Chris@441:             el = null;
Chris@441:             return f;
Chris@441:           })(),
Chris@441:           _flag: function(element, attribute) {
Chris@441:             return $(element).hasAttribute(attribute) ? attribute : null;
Chris@441:           },
Chris@441:           style: function(element) {
Chris@441:             return element.style.cssText.toLowerCase();
Chris@441:           },
Chris@441:           title: function(element) {
Chris@441:             return element.title;
Chris@441:           }
Chris@0:         }
Chris@0:       }
Chris@0:     }
Chris@441:   })();
Chris@0: 
Chris@0:   Element._attributeTranslations.write = {
Chris@0:     names: Object.extend({
Chris@0:       cellpadding: 'cellPadding',
Chris@0:       cellspacing: 'cellSpacing'
Chris@0:     }, Element._attributeTranslations.read.names),
Chris@0:     values: {
Chris@0:       checked: function(element, value) {
Chris@0:         element.checked = !!value;
Chris@0:       },
Chris@0: 
Chris@0:       style: function(element, value) {
Chris@0:         element.style.cssText = value ? value : '';
Chris@0:       }
Chris@0:     }
Chris@0:   };
Chris@0: 
Chris@0:   Element._attributeTranslations.has = {};
Chris@0: 
Chris@0:   $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
Chris@0:       'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
Chris@0:     Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
Chris@0:     Element._attributeTranslations.has[attr.toLowerCase()] = attr;
Chris@0:   });
Chris@0: 
Chris@0:   (function(v) {
Chris@0:     Object.extend(v, {
Chris@441:       href:        v._getAttr2,
Chris@441:       src:         v._getAttr2,
Chris@0:       type:        v._getAttr,
Chris@0:       action:      v._getAttrNode,
Chris@0:       disabled:    v._flag,
Chris@0:       checked:     v._flag,
Chris@0:       readonly:    v._flag,
Chris@0:       multiple:    v._flag,
Chris@0:       onload:      v._getEv,
Chris@0:       onunload:    v._getEv,
Chris@0:       onclick:     v._getEv,
Chris@0:       ondblclick:  v._getEv,
Chris@0:       onmousedown: v._getEv,
Chris@0:       onmouseup:   v._getEv,
Chris@0:       onmouseover: v._getEv,
Chris@0:       onmousemove: v._getEv,
Chris@0:       onmouseout:  v._getEv,
Chris@0:       onfocus:     v._getEv,
Chris@0:       onblur:      v._getEv,
Chris@0:       onkeypress:  v._getEv,
Chris@0:       onkeydown:   v._getEv,
Chris@0:       onkeyup:     v._getEv,
Chris@0:       onsubmit:    v._getEv,
Chris@0:       onreset:     v._getEv,
Chris@0:       onselect:    v._getEv,
Chris@0:       onchange:    v._getEv
Chris@0:     });
Chris@0:   })(Element._attributeTranslations.read.values);
Chris@441: 
Chris@441:   if (Prototype.BrowserFeatures.ElementExtensions) {
Chris@441:     (function() {
Chris@441:       function _descendants(element) {
Chris@441:         var nodes = element.getElementsByTagName('*'), results = [];
Chris@441:         for (var i = 0, node; node = nodes[i]; i++)
Chris@441:           if (node.tagName !== "!") // Filter out comment nodes.
Chris@441:             results.push(node);
Chris@441:         return results;
Chris@441:       }
Chris@441: 
Chris@441:       Element.Methods.down = function(element, expression, index) {
Chris@441:         element = $(element);
Chris@441:         if (arguments.length == 1) return element.firstDescendant();
Chris@441:         return Object.isNumber(expression) ? _descendants(element)[expression] :
Chris@441:           Element.select(element, expression)[index || 0];
Chris@441:       }
Chris@441:     })();
Chris@441:   }
Chris@441: 
Chris@0: }
Chris@0: 
Chris@0: else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
Chris@0:   Element.Methods.setOpacity = function(element, value) {
Chris@0:     element = $(element);
Chris@0:     element.style.opacity = (value == 1) ? 0.999999 :
Chris@0:       (value === '') ? '' : (value < 0.00001) ? 0 : value;
Chris@0:     return element;
Chris@0:   };
Chris@0: }
Chris@0: 
Chris@0: else if (Prototype.Browser.WebKit) {
Chris@0:   Element.Methods.setOpacity = function(element, value) {
Chris@0:     element = $(element);
Chris@0:     element.style.opacity = (value == 1 || value === '') ? '' :
Chris@0:       (value < 0.00001) ? 0 : value;
Chris@0: 
Chris@0:     if (value == 1)
Chris@441:       if (element.tagName.toUpperCase() == 'IMG' && element.width) {
Chris@0:         element.width++; element.width--;
Chris@0:       } else try {
Chris@0:         var n = document.createTextNode(' ');
Chris@0:         element.appendChild(n);
Chris@0:         element.removeChild(n);
Chris@0:       } catch (e) { }
Chris@0: 
Chris@0:     return element;
Chris@0:   };
Chris@0: }
Chris@0: 
Chris@441: if ('outerHTML' in document.documentElement) {
Chris@0:   Element.Methods.replace = function(element, content) {
Chris@0:     element = $(element);
Chris@0: 
Chris@0:     if (content && content.toElement) content = content.toElement();
Chris@0:     if (Object.isElement(content)) {
Chris@0:       element.parentNode.replaceChild(content, element);
Chris@0:       return element;
Chris@0:     }
Chris@0: 
Chris@0:     content = Object.toHTML(content);
Chris@0:     var parent = element.parentNode, tagName = parent.tagName.toUpperCase();
Chris@0: 
Chris@0:     if (Element._insertionTranslations.tags[tagName]) {
Chris@441:       var nextSibling = element.next(),
Chris@441:           fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
Chris@0:       parent.removeChild(element);
Chris@0:       if (nextSibling)
Chris@0:         fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
Chris@0:       else
Chris@0:         fragments.each(function(node) { parent.appendChild(node) });
Chris@0:     }
Chris@0:     else element.outerHTML = content.stripScripts();
Chris@0: 
Chris@0:     content.evalScripts.bind(content).defer();
Chris@0:     return element;
Chris@0:   };
Chris@0: }
Chris@0: 
Chris@0: Element._returnOffset = function(l, t) {
Chris@0:   var result = [l, t];
Chris@0:   result.left = l;
Chris@0:   result.top = t;
Chris@0:   return result;
Chris@0: };
Chris@0: 
Chris@441: Element._getContentFromAnonymousElement = function(tagName, html, force) {
Chris@441:   var div = new Element('div'),
Chris@441:       t = Element._insertionTranslations.tags[tagName];
Chris@441: 
Chris@441:   var workaround = false;
Chris@441:   if (t) workaround = true;
Chris@441:   else if (force) {
Chris@441:     workaround = true;
Chris@441:     t = ['', '', 0];
Chris@441:   }
Chris@441: 
Chris@441:   if (workaround) {
Chris@441:     div.innerHTML = '&nbsp;' + t[0] + html + t[1];
Chris@441:     div.removeChild(div.firstChild);
Chris@441:     for (var i = t[2]; i--; ) {
Chris@441:       div = div.firstChild;
Chris@441:     }
Chris@441:   }
Chris@441:   else {
Chris@441:     div.innerHTML = html;
Chris@441:   }
Chris@0:   return $A(div.childNodes);
Chris@0: };
Chris@0: 
Chris@0: Element._insertionTranslations = {
Chris@0:   before: function(element, node) {
Chris@0:     element.parentNode.insertBefore(node, element);
Chris@0:   },
Chris@0:   top: function(element, node) {
Chris@0:     element.insertBefore(node, element.firstChild);
Chris@0:   },
Chris@0:   bottom: function(element, node) {
Chris@0:     element.appendChild(node);
Chris@0:   },
Chris@0:   after: function(element, node) {
Chris@0:     element.parentNode.insertBefore(node, element.nextSibling);
Chris@0:   },
Chris@0:   tags: {
Chris@0:     TABLE:  ['<table>',                '</table>',                   1],
Chris@0:     TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
Chris@0:     TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
Chris@0:     TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
Chris@0:     SELECT: ['<select>',               '</select>',                  1]
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: (function() {
Chris@441:   var tags = Element._insertionTranslations.tags;
Chris@441:   Object.extend(tags, {
Chris@441:     THEAD: tags.TBODY,
Chris@441:     TFOOT: tags.TBODY,
Chris@441:     TH:    tags.TD
Chris@0:   });
Chris@441: })();
Chris@0: 
Chris@0: Element.Methods.Simulated = {
Chris@0:   hasAttribute: function(element, attribute) {
Chris@0:     attribute = Element._attributeTranslations.has[attribute] || attribute;
Chris@0:     var node = $(element).getAttributeNode(attribute);
Chris@0:     return !!(node && node.specified);
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: Element.Methods.ByTag = { };
Chris@0: 
Chris@0: Object.extend(Element, Element.Methods);
Chris@0: 
Chris@441: (function(div) {
Chris@441: 
Chris@441:   if (!Prototype.BrowserFeatures.ElementExtensions && div['__proto__']) {
Chris@441:     window.HTMLElement = { };
Chris@441:     window.HTMLElement.prototype = div['__proto__'];
Chris@441:     Prototype.BrowserFeatures.ElementExtensions = true;
Chris@441:   }
Chris@441: 
Chris@441:   div = null;
Chris@441: 
Chris@441: })(document.createElement('div'));
Chris@0: 
Chris@0: Element.extend = (function() {
Chris@441: 
Chris@441:   function checkDeficiency(tagName) {
Chris@441:     if (typeof window.Element != 'undefined') {
Chris@441:       var proto = window.Element.prototype;
Chris@441:       if (proto) {
Chris@441:         var id = '_' + (Math.random()+'').slice(2),
Chris@441:             el = document.createElement(tagName);
Chris@441:         proto[id] = 'x';
Chris@441:         var isBuggy = (el[id] !== 'x');
Chris@441:         delete proto[id];
Chris@441:         el = null;
Chris@441:         return isBuggy;
Chris@441:       }
Chris@441:     }
Chris@441:     return false;
Chris@441:   }
Chris@441: 
Chris@441:   function extendElementWith(element, methods) {
Chris@441:     for (var property in methods) {
Chris@441:       var value = methods[property];
Chris@0:       if (Object.isFunction(value) && !(property in element))
Chris@0:         element[property] = value.methodize();
Chris@0:     }
Chris@441:   }
Chris@441: 
Chris@441:   var HTMLOBJECTELEMENT_PROTOTYPE_BUGGY = checkDeficiency('object');
Chris@441: 
Chris@441:   if (Prototype.BrowserFeatures.SpecificElementExtensions) {
Chris@441:     if (HTMLOBJECTELEMENT_PROTOTYPE_BUGGY) {
Chris@441:       return function(element) {
Chris@441:         if (element && typeof element._extendedByPrototype == 'undefined') {
Chris@441:           var t = element.tagName;
Chris@441:           if (t && (/^(?:object|applet|embed)$/i.test(t))) {
Chris@441:             extendElementWith(element, Element.Methods);
Chris@441:             extendElementWith(element, Element.Methods.Simulated);
Chris@441:             extendElementWith(element, Element.Methods.ByTag[t.toUpperCase()]);
Chris@441:           }
Chris@441:         }
Chris@441:         return element;
Chris@441:       }
Chris@441:     }
Chris@441:     return Prototype.K;
Chris@441:   }
Chris@441: 
Chris@441:   var Methods = { }, ByTag = Element.Methods.ByTag;
Chris@441: 
Chris@441:   var extend = Object.extend(function(element) {
Chris@441:     if (!element || typeof element._extendedByPrototype != 'undefined' ||
Chris@441:         element.nodeType != 1 || element == window) return element;
Chris@441: 
Chris@441:     var methods = Object.clone(Methods),
Chris@441:         tagName = element.tagName.toUpperCase();
Chris@441: 
Chris@441:     if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
Chris@441: 
Chris@441:     extendElementWith(element, methods);
Chris@0: 
Chris@0:     element._extendedByPrototype = Prototype.emptyFunction;
Chris@0:     return element;
Chris@0: 
Chris@0:   }, {
Chris@0:     refresh: function() {
Chris@0:       if (!Prototype.BrowserFeatures.ElementExtensions) {
Chris@0:         Object.extend(Methods, Element.Methods);
Chris@0:         Object.extend(Methods, Element.Methods.Simulated);
Chris@0:       }
Chris@0:     }
Chris@0:   });
Chris@0: 
Chris@0:   extend.refresh();
Chris@0:   return extend;
Chris@0: })();
Chris@0: 
Chris@441: if (document.documentElement.hasAttribute) {
Chris@441:   Element.hasAttribute = function(element, attribute) {
Chris@441:     return element.hasAttribute(attribute);
Chris@441:   };
Chris@441: }
Chris@441: else {
Chris@441:   Element.hasAttribute = Element.Methods.Simulated.hasAttribute;
Chris@441: }
Chris@0: 
Chris@0: Element.addMethods = function(methods) {
Chris@0:   var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
Chris@0: 
Chris@0:   if (!methods) {
Chris@0:     Object.extend(Form, Form.Methods);
Chris@0:     Object.extend(Form.Element, Form.Element.Methods);
Chris@0:     Object.extend(Element.Methods.ByTag, {
Chris@0:       "FORM":     Object.clone(Form.Methods),
Chris@0:       "INPUT":    Object.clone(Form.Element.Methods),
Chris@0:       "SELECT":   Object.clone(Form.Element.Methods),
Chris@441:       "TEXTAREA": Object.clone(Form.Element.Methods),
Chris@441:       "BUTTON":   Object.clone(Form.Element.Methods)
Chris@0:     });
Chris@0:   }
Chris@0: 
Chris@0:   if (arguments.length == 2) {
Chris@0:     var tagName = methods;
Chris@0:     methods = arguments[1];
Chris@0:   }
Chris@0: 
Chris@0:   if (!tagName) Object.extend(Element.Methods, methods || { });
Chris@0:   else {
Chris@0:     if (Object.isArray(tagName)) tagName.each(extend);
Chris@0:     else extend(tagName);
Chris@0:   }
Chris@0: 
Chris@0:   function extend(tagName) {
Chris@0:     tagName = tagName.toUpperCase();
Chris@0:     if (!Element.Methods.ByTag[tagName])
Chris@0:       Element.Methods.ByTag[tagName] = { };
Chris@0:     Object.extend(Element.Methods.ByTag[tagName], methods);
Chris@0:   }
Chris@0: 
Chris@0:   function copy(methods, destination, onlyIfAbsent) {
Chris@0:     onlyIfAbsent = onlyIfAbsent || false;
Chris@0:     for (var property in methods) {
Chris@0:       var value = methods[property];
Chris@0:       if (!Object.isFunction(value)) continue;
Chris@0:       if (!onlyIfAbsent || !(property in destination))
Chris@0:         destination[property] = value.methodize();
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   function findDOMClass(tagName) {
Chris@0:     var klass;
Chris@0:     var trans = {
Chris@0:       "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
Chris@0:       "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
Chris@0:       "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
Chris@0:       "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
Chris@0:       "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
Chris@0:       "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
Chris@0:       "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
Chris@0:       "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
Chris@0:       "FrameSet", "IFRAME": "IFrame"
Chris@0:     };
Chris@0:     if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
Chris@0:     if (window[klass]) return window[klass];
Chris@0:     klass = 'HTML' + tagName + 'Element';
Chris@0:     if (window[klass]) return window[klass];
Chris@0:     klass = 'HTML' + tagName.capitalize() + 'Element';
Chris@0:     if (window[klass]) return window[klass];
Chris@0: 
Chris@441:     var element = document.createElement(tagName),
Chris@441:         proto = element['__proto__'] || element.constructor.prototype;
Chris@441: 
Chris@441:     element = null;
Chris@441:     return proto;
Chris@441:   }
Chris@441: 
Chris@441:   var elementPrototype = window.HTMLElement ? HTMLElement.prototype :
Chris@441:    Element.prototype;
Chris@0: 
Chris@0:   if (F.ElementExtensions) {
Chris@441:     copy(Element.Methods, elementPrototype);
Chris@441:     copy(Element.Methods.Simulated, elementPrototype, true);
Chris@0:   }
Chris@0: 
Chris@0:   if (F.SpecificElementExtensions) {
Chris@0:     for (var tag in Element.Methods.ByTag) {
Chris@0:       var klass = findDOMClass(tag);
Chris@0:       if (Object.isUndefined(klass)) continue;
Chris@0:       copy(T[tag], klass.prototype);
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   Object.extend(Element, Element.Methods);
Chris@0:   delete Element.ByTag;
Chris@0: 
Chris@0:   if (Element.extend.refresh) Element.extend.refresh();
Chris@0:   Element.cache = { };
Chris@0: };
Chris@0: 
Chris@441: 
Chris@0: document.viewport = {
Chris@441: 
Chris@0:   getDimensions: function() {
Chris@441:     return { width: this.getWidth(), height: this.getHeight() };
Chris@0:   },
Chris@0: 
Chris@0:   getScrollOffsets: function() {
Chris@0:     return Element._returnOffset(
Chris@0:       window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
Chris@441:       window.pageYOffset || document.documentElement.scrollTop  || document.body.scrollTop);
Chris@0:   }
Chris@0: };
Chris@441: 
Chris@441: (function(viewport) {
Chris@441:   var B = Prototype.Browser, doc = document, element, property = {};
Chris@441: 
Chris@441:   function getRootElement() {
Chris@441:     if (B.WebKit && !doc.evaluate)
Chris@441:       return document;
Chris@441: 
Chris@441:     if (B.Opera && window.parseFloat(window.opera.version()) < 9.5)
Chris@441:       return document.body;
Chris@441: 
Chris@441:     return document.documentElement;
Chris@441:   }
Chris@441: 
Chris@441:   function define(D) {
Chris@441:     if (!element) element = getRootElement();
Chris@441: 
Chris@441:     property[D] = 'client' + D;
Chris@441: 
Chris@441:     viewport['get' + D] = function() { return element[property[D]] };
Chris@441:     return viewport['get' + D]();
Chris@441:   }
Chris@441: 
Chris@441:   viewport.getWidth  = define.curry('Width');
Chris@441: 
Chris@441:   viewport.getHeight = define.curry('Height');
Chris@441: })(document.viewport);
Chris@441: 
Chris@441: 
Chris@441: Element.Storage = {
Chris@441:   UID: 1
Chris@441: };
Chris@441: 
Chris@441: Element.addMethods({
Chris@441:   getStorage: function(element) {
Chris@441:     if (!(element = $(element))) return;
Chris@441: 
Chris@441:     var uid;
Chris@441:     if (element === window) {
Chris@441:       uid = 0;
Chris@0:     } else {
Chris@441:       if (typeof element._prototypeUID === "undefined")
Chris@441:         element._prototypeUID = Element.Storage.UID++;
Chris@441:       uid = element._prototypeUID;
Chris@0:     }
Chris@0: 
Chris@441:     if (!Element.Storage[uid])
Chris@441:       Element.Storage[uid] = $H();
Chris@441: 
Chris@441:     return Element.Storage[uid];
Chris@0:   },
Chris@0: 
Chris@441:   store: function(element, key, value) {
Chris@441:     if (!(element = $(element))) return;
Chris@441: 
Chris@441:     if (arguments.length === 2) {
Chris@441:       Element.getStorage(element).update(key);
Chris@441:     } else {
Chris@441:       Element.getStorage(element).set(key, value);
Chris@441:     }
Chris@441: 
Chris@441:     return element;
Chris@441:   },
Chris@441: 
Chris@441:   retrieve: function(element, key, defaultValue) {
Chris@441:     if (!(element = $(element))) return;
Chris@441:     var hash = Element.getStorage(element), value = hash.get(key);
Chris@441: 
Chris@441:     if (Object.isUndefined(value)) {
Chris@441:       hash.set(key, defaultValue);
Chris@441:       value = defaultValue;
Chris@441:     }
Chris@441: 
Chris@441:     return value;
Chris@441:   },
Chris@441: 
Chris@441:   clone: function(element, deep) {
Chris@441:     if (!(element = $(element))) return;
Chris@441:     var clone = element.cloneNode(deep);
Chris@441:     clone._prototypeUID = void 0;
Chris@441:     if (deep) {
Chris@441:       var descendants = Element.select(clone, '*'),
Chris@441:           i = descendants.length;
Chris@441:       while (i--) {
Chris@441:         descendants[i]._prototypeUID = void 0;
Chris@441:       }
Chris@441:     }
Chris@441:     return Element.extend(clone);
Chris@441:   },
Chris@441: 
Chris@441:   purge: function(element) {
Chris@441:     if (!(element = $(element))) return;
Chris@441:     var purgeElement = Element._purgeElement;
Chris@441: 
Chris@441:     purgeElement(element);
Chris@441: 
Chris@441:     var descendants = element.getElementsByTagName('*'),
Chris@441:      i = descendants.length;
Chris@441: 
Chris@441:     while (i--) purgeElement(descendants[i]);
Chris@441: 
Chris@441:     return null;
Chris@441:   }
Chris@441: });
Chris@441: 
Chris@441: (function() {
Chris@441: 
Chris@441:   function toDecimal(pctString) {
Chris@441:     var match = pctString.match(/^(\d+)%?$/i);
Chris@441:     if (!match) return null;
Chris@441:     return (Number(match[1]) / 100);
Chris@441:   }
Chris@441: 
Chris@441:   function getPixelValue(value, property, context) {
Chris@441:     var element = null;
Chris@441:     if (Object.isElement(value)) {
Chris@441:       element = value;
Chris@441:       value = element.getStyle(property);
Chris@441:     }
Chris@441: 
Chris@441:     if (value === null) {
Chris@441:       return null;
Chris@441:     }
Chris@441: 
Chris@441:     if ((/^(?:-)?\d+(\.\d+)?(px)?$/i).test(value)) {
Chris@441:       return window.parseFloat(value);
Chris@441:     }
Chris@441: 
Chris@441:     var isPercentage = value.include('%'), isViewport = (context === document.viewport);
Chris@441: 
Chris@441:     if (/\d/.test(value) && element && element.runtimeStyle && !(isPercentage && isViewport)) {
Chris@441:       var style = element.style.left, rStyle = element.runtimeStyle.left;
Chris@441:       element.runtimeStyle.left = element.currentStyle.left;
Chris@441:       element.style.left = value || 0;
Chris@441:       value = element.style.pixelLeft;
Chris@441:       element.style.left = style;
Chris@441:       element.runtimeStyle.left = rStyle;
Chris@441: 
Chris@441:       return value;
Chris@441:     }
Chris@441: 
Chris@441:     if (element && isPercentage) {
Chris@441:       context = context || element.parentNode;
Chris@441:       var decimal = toDecimal(value);
Chris@441:       var whole = null;
Chris@441:       var position = element.getStyle('position');
Chris@441: 
Chris@441:       var isHorizontal = property.include('left') || property.include('right') ||
Chris@441:        property.include('width');
Chris@441: 
Chris@441:       var isVertical =  property.include('top') || property.include('bottom') ||
Chris@441:         property.include('height');
Chris@441: 
Chris@441:       if (context === document.viewport) {
Chris@441:         if (isHorizontal) {
Chris@441:           whole = document.viewport.getWidth();
Chris@441:         } else if (isVertical) {
Chris@441:           whole = document.viewport.getHeight();
Chris@441:         }
Chris@441:       } else {
Chris@441:         if (isHorizontal) {
Chris@441:           whole = $(context).measure('width');
Chris@441:         } else if (isVertical) {
Chris@441:           whole = $(context).measure('height');
Chris@441:         }
Chris@441:       }
Chris@441: 
Chris@441:       return (whole === null) ? 0 : whole * decimal;
Chris@441:     }
Chris@441: 
Chris@441:     return 0;
Chris@441:   }
Chris@441: 
Chris@441:   function toCSSPixels(number) {
Chris@441:     if (Object.isString(number) && number.endsWith('px')) {
Chris@441:       return number;
Chris@441:     }
Chris@441:     return number + 'px';
Chris@441:   }
Chris@441: 
Chris@441:   function isDisplayed(element) {
Chris@441:     var originalElement = element;
Chris@441:     while (element && element.parentNode) {
Chris@441:       var display = element.getStyle('display');
Chris@441:       if (display === 'none') {
Chris@441:         return false;
Chris@441:       }
Chris@441:       element = $(element.parentNode);
Chris@441:     }
Chris@0:     return true;
Chris@441:   }
Chris@441: 
Chris@441:   var hasLayout = Prototype.K;
Chris@441:   if ('currentStyle' in document.documentElement) {
Chris@441:     hasLayout = function(element) {
Chris@441:       if (!element.currentStyle.hasLayout) {
Chris@441:         element.style.zoom = 1;
Chris@441:       }
Chris@441:       return element;
Chris@441:     };
Chris@441:   }
Chris@441: 
Chris@441:   function cssNameFor(key) {
Chris@441:     if (key.include('border')) key = key + '-width';
Chris@441:     return key.camelize();
Chris@441:   }
Chris@441: 
Chris@441:   Element.Layout = Class.create(Hash, {
Chris@441:     initialize: function($super, element, preCompute) {
Chris@441:       $super();
Chris@441:       this.element = $(element);
Chris@441: 
Chris@441:       Element.Layout.PROPERTIES.each( function(property) {
Chris@441:         this._set(property, null);
Chris@441:       }, this);
Chris@441: 
Chris@441:       if (preCompute) {
Chris@441:         this._preComputing = true;
Chris@441:         this._begin();
Chris@441:         Element.Layout.PROPERTIES.each( this._compute, this );
Chris@441:         this._end();
Chris@441:         this._preComputing = false;
Chris@441:       }
Chris@441:     },
Chris@441: 
Chris@441:     _set: function(property, value) {
Chris@441:       return Hash.prototype.set.call(this, property, value);
Chris@441:     },
Chris@441: 
Chris@441:     set: function(property, value) {
Chris@441:       throw "Properties of Element.Layout are read-only.";
Chris@441:     },
Chris@441: 
Chris@441:     get: function($super, property) {
Chris@441:       var value = $super(property);
Chris@441:       return value === null ? this._compute(property) : value;
Chris@441:     },
Chris@441: 
Chris@441:     _begin: function() {
Chris@441:       if (this._prepared) return;
Chris@441: 
Chris@441:       var element = this.element;
Chris@441:       if (isDisplayed(element)) {
Chris@441:         this._prepared = true;
Chris@441:         return;
Chris@441:       }
Chris@441: 
Chris@441:       var originalStyles = {
Chris@441:         position:   element.style.position   || '',
Chris@441:         width:      element.style.width      || '',
Chris@441:         visibility: element.style.visibility || '',
Chris@441:         display:    element.style.display    || ''
Chris@441:       };
Chris@441: 
Chris@441:       element.store('prototype_original_styles', originalStyles);
Chris@441: 
Chris@441:       var position = element.getStyle('position'),
Chris@441:        width = element.getStyle('width');
Chris@441: 
Chris@441:       if (width === "0px" || width === null) {
Chris@441:         element.style.display = 'block';
Chris@441:         width = element.getStyle('width');
Chris@441:       }
Chris@441: 
Chris@441:       var context = (position === 'fixed') ? document.viewport :
Chris@441:        element.parentNode;
Chris@441: 
Chris@441:       element.setStyle({
Chris@441:         position:   'absolute',
Chris@441:         visibility: 'hidden',
Chris@441:         display:    'block'
Chris@441:       });
Chris@441: 
Chris@441:       var positionedWidth = element.getStyle('width');
Chris@441: 
Chris@441:       var newWidth;
Chris@441:       if (width && (positionedWidth === width)) {
Chris@441:         newWidth = getPixelValue(element, 'width', context);
Chris@441:       } else if (position === 'absolute' || position === 'fixed') {
Chris@441:         newWidth = getPixelValue(element, 'width', context);
Chris@441:       } else {
Chris@441:         var parent = element.parentNode, pLayout = $(parent).getLayout();
Chris@441: 
Chris@441:         newWidth = pLayout.get('width') -
Chris@441:          this.get('margin-left') -
Chris@441:          this.get('border-left') -
Chris@441:          this.get('padding-left') -
Chris@441:          this.get('padding-right') -
Chris@441:          this.get('border-right') -
Chris@441:          this.get('margin-right');
Chris@441:       }
Chris@441: 
Chris@441:       element.setStyle({ width: newWidth + 'px' });
Chris@441: 
Chris@441:       this._prepared = true;
Chris@441:     },
Chris@441: 
Chris@441:     _end: function() {
Chris@441:       var element = this.element;
Chris@441:       var originalStyles = element.retrieve('prototype_original_styles');
Chris@441:       element.store('prototype_original_styles', null);
Chris@441:       element.setStyle(originalStyles);
Chris@441:       this._prepared = false;
Chris@441:     },
Chris@441: 
Chris@441:     _compute: function(property) {
Chris@441:       var COMPUTATIONS = Element.Layout.COMPUTATIONS;
Chris@441:       if (!(property in COMPUTATIONS)) {
Chris@441:         throw "Property not found.";
Chris@441:       }
Chris@441: 
Chris@441:       return this._set(property, COMPUTATIONS[property].call(this, this.element));
Chris@441:     },
Chris@441: 
Chris@441:     toObject: function() {
Chris@441:       var args = $A(arguments);
Chris@441:       var keys = (args.length === 0) ? Element.Layout.PROPERTIES :
Chris@441:        args.join(' ').split(' ');
Chris@441:       var obj = {};
Chris@441:       keys.each( function(key) {
Chris@441:         if (!Element.Layout.PROPERTIES.include(key)) return;
Chris@441:         var value = this.get(key);
Chris@441:         if (value != null) obj[key] = value;
Chris@441:       }, this);
Chris@441:       return obj;
Chris@441:     },
Chris@441: 
Chris@441:     toHash: function() {
Chris@441:       var obj = this.toObject.apply(this, arguments);
Chris@441:       return new Hash(obj);
Chris@441:     },
Chris@441: 
Chris@441:     toCSS: function() {
Chris@441:       var args = $A(arguments);
Chris@441:       var keys = (args.length === 0) ? Element.Layout.PROPERTIES :
Chris@441:        args.join(' ').split(' ');
Chris@441:       var css = {};
Chris@441: 
Chris@441:       keys.each( function(key) {
Chris@441:         if (!Element.Layout.PROPERTIES.include(key)) return;
Chris@441:         if (Element.Layout.COMPOSITE_PROPERTIES.include(key)) return;
Chris@441: 
Chris@441:         var value = this.get(key);
Chris@441:         if (value != null) css[cssNameFor(key)] = value + 'px';
Chris@441:       }, this);
Chris@441:       return css;
Chris@441:     },
Chris@441: 
Chris@441:     inspect: function() {
Chris@441:       return "#<Element.Layout>";
Chris@0:     }
Chris@441:   });
Chris@441: 
Chris@441:   Object.extend(Element.Layout, {
Chris@441:     PROPERTIES: $w('height width top left right bottom border-left border-right border-top border-bottom padding-left padding-right padding-top padding-bottom margin-top margin-bottom margin-left margin-right padding-box-width padding-box-height border-box-width border-box-height margin-box-width margin-box-height'),
Chris@441: 
Chris@441:     COMPOSITE_PROPERTIES: $w('padding-box-width padding-box-height margin-box-width margin-box-height border-box-width border-box-height'),
Chris@441: 
Chris@441:     COMPUTATIONS: {
Chris@441:       'height': function(element) {
Chris@441:         if (!this._preComputing) this._begin();
Chris@441: 
Chris@441:         var bHeight = this.get('border-box-height');
Chris@441:         if (bHeight <= 0) {
Chris@441:           if (!this._preComputing) this._end();
Chris@441:           return 0;
Chris@441:         }
Chris@441: 
Chris@441:         var bTop = this.get('border-top'),
Chris@441:          bBottom = this.get('border-bottom');
Chris@441: 
Chris@441:         var pTop = this.get('padding-top'),
Chris@441:          pBottom = this.get('padding-bottom');
Chris@441: 
Chris@441:         if (!this._preComputing) this._end();
Chris@441: 
Chris@441:         return bHeight - bTop - bBottom - pTop - pBottom;
Chris@441:       },
Chris@441: 
Chris@441:       'width': function(element) {
Chris@441:         if (!this._preComputing) this._begin();
Chris@441: 
Chris@441:         var bWidth = this.get('border-box-width');
Chris@441:         if (bWidth <= 0) {
Chris@441:           if (!this._preComputing) this._end();
Chris@441:           return 0;
Chris@441:         }
Chris@441: 
Chris@441:         var bLeft = this.get('border-left'),
Chris@441:          bRight = this.get('border-right');
Chris@441: 
Chris@441:         var pLeft = this.get('padding-left'),
Chris@441:          pRight = this.get('padding-right');
Chris@441: 
Chris@441:         if (!this._preComputing) this._end();
Chris@441: 
Chris@441:         return bWidth - bLeft - bRight - pLeft - pRight;
Chris@441:       },
Chris@441: 
Chris@441:       'padding-box-height': function(element) {
Chris@441:         var height = this.get('height'),
Chris@441:          pTop = this.get('padding-top'),
Chris@441:          pBottom = this.get('padding-bottom');
Chris@441: 
Chris@441:         return height + pTop + pBottom;
Chris@441:       },
Chris@441: 
Chris@441:       'padding-box-width': function(element) {
Chris@441:         var width = this.get('width'),
Chris@441:          pLeft = this.get('padding-left'),
Chris@441:          pRight = this.get('padding-right');
Chris@441: 
Chris@441:         return width + pLeft + pRight;
Chris@441:       },
Chris@441: 
Chris@441:       'border-box-height': function(element) {
Chris@441:         if (!this._preComputing) this._begin();
Chris@441:         var height = element.offsetHeight;
Chris@441:         if (!this._preComputing) this._end();
Chris@441:         return height;
Chris@441:       },
Chris@441: 
Chris@441:       'border-box-width': function(element) {
Chris@441:         if (!this._preComputing) this._begin();
Chris@441:         var width = element.offsetWidth;
Chris@441:         if (!this._preComputing) this._end();
Chris@441:         return width;
Chris@441:       },
Chris@441: 
Chris@441:       'margin-box-height': function(element) {
Chris@441:         var bHeight = this.get('border-box-height'),
Chris@441:          mTop = this.get('margin-top'),
Chris@441:          mBottom = this.get('margin-bottom');
Chris@441: 
Chris@441:         if (bHeight <= 0) return 0;
Chris@441: 
Chris@441:         return bHeight + mTop + mBottom;
Chris@441:       },
Chris@441: 
Chris@441:       'margin-box-width': function(element) {
Chris@441:         var bWidth = this.get('border-box-width'),
Chris@441:          mLeft = this.get('margin-left'),
Chris@441:          mRight = this.get('margin-right');
Chris@441: 
Chris@441:         if (bWidth <= 0) return 0;
Chris@441: 
Chris@441:         return bWidth + mLeft + mRight;
Chris@441:       },
Chris@441: 
Chris@441:       'top': function(element) {
Chris@441:         var offset = element.positionedOffset();
Chris@441:         return offset.top;
Chris@441:       },
Chris@441: 
Chris@441:       'bottom': function(element) {
Chris@441:         var offset = element.positionedOffset(),
Chris@441:          parent = element.getOffsetParent(),
Chris@441:          pHeight = parent.measure('height');
Chris@441: 
Chris@441:         var mHeight = this.get('border-box-height');
Chris@441: 
Chris@441:         return pHeight - mHeight - offset.top;
Chris@441:       },
Chris@441: 
Chris@441:       'left': function(element) {
Chris@441:         var offset = element.positionedOffset();
Chris@441:         return offset.left;
Chris@441:       },
Chris@441: 
Chris@441:       'right': function(element) {
Chris@441:         var offset = element.positionedOffset(),
Chris@441:          parent = element.getOffsetParent(),
Chris@441:          pWidth = parent.measure('width');
Chris@441: 
Chris@441:         var mWidth = this.get('border-box-width');
Chris@441: 
Chris@441:         return pWidth - mWidth - offset.left;
Chris@441:       },
Chris@441: 
Chris@441:       'padding-top': function(element) {
Chris@441:         return getPixelValue(element, 'paddingTop');
Chris@441:       },
Chris@441: 
Chris@441:       'padding-bottom': function(element) {
Chris@441:         return getPixelValue(element, 'paddingBottom');
Chris@441:       },
Chris@441: 
Chris@441:       'padding-left': function(element) {
Chris@441:         return getPixelValue(element, 'paddingLeft');
Chris@441:       },
Chris@441: 
Chris@441:       'padding-right': function(element) {
Chris@441:         return getPixelValue(element, 'paddingRight');
Chris@441:       },
Chris@441: 
Chris@441:       'border-top': function(element) {
Chris@441:         return getPixelValue(element, 'borderTopWidth');
Chris@441:       },
Chris@441: 
Chris@441:       'border-bottom': function(element) {
Chris@441:         return getPixelValue(element, 'borderBottomWidth');
Chris@441:       },
Chris@441: 
Chris@441:       'border-left': function(element) {
Chris@441:         return getPixelValue(element, 'borderLeftWidth');
Chris@441:       },
Chris@441: 
Chris@441:       'border-right': function(element) {
Chris@441:         return getPixelValue(element, 'borderRightWidth');
Chris@441:       },
Chris@441: 
Chris@441:       'margin-top': function(element) {
Chris@441:         return getPixelValue(element, 'marginTop');
Chris@441:       },
Chris@441: 
Chris@441:       'margin-bottom': function(element) {
Chris@441:         return getPixelValue(element, 'marginBottom');
Chris@441:       },
Chris@441: 
Chris@441:       'margin-left': function(element) {
Chris@441:         return getPixelValue(element, 'marginLeft');
Chris@441:       },
Chris@441: 
Chris@441:       'margin-right': function(element) {
Chris@441:         return getPixelValue(element, 'marginRight');
Chris@441:       }
Chris@0:     }
Chris@441:   });
Chris@441: 
Chris@441:   if ('getBoundingClientRect' in document.documentElement) {
Chris@441:     Object.extend(Element.Layout.COMPUTATIONS, {
Chris@441:       'right': function(element) {
Chris@441:         var parent = hasLayout(element.getOffsetParent());
Chris@441:         var rect = element.getBoundingClientRect(),
Chris@441:          pRect = parent.getBoundingClientRect();
Chris@441: 
Chris@441:         return (pRect.right - rect.right).round();
Chris@441:       },
Chris@441: 
Chris@441:       'bottom': function(element) {
Chris@441:         var parent = hasLayout(element.getOffsetParent());
Chris@441:         var rect = element.getBoundingClientRect(),
Chris@441:          pRect = parent.getBoundingClientRect();
Chris@441: 
Chris@441:         return (pRect.bottom - rect.bottom).round();
Chris@441:       }
Chris@441:     });
Chris@441:   }
Chris@441: 
Chris@441:   Element.Offset = Class.create({
Chris@441:     initialize: function(left, top) {
Chris@441:       this.left = left.round();
Chris@441:       this.top  = top.round();
Chris@441: 
Chris@441:       this[0] = this.left;
Chris@441:       this[1] = this.top;
Chris@441:     },
Chris@441: 
Chris@441:     relativeTo: function(offset) {
Chris@441:       return new Element.Offset(
Chris@441:         this.left - offset.left,
Chris@441:         this.top  - offset.top
Chris@441:       );
Chris@441:     },
Chris@441: 
Chris@441:     inspect: function() {
Chris@441:       return "#<Element.Offset left: #{left} top: #{top}>".interpolate(this);
Chris@441:     },
Chris@441: 
Chris@441:     toString: function() {
Chris@441:       return "[#{left}, #{top}]".interpolate(this);
Chris@441:     },
Chris@441: 
Chris@441:     toArray: function() {
Chris@441:       return [this.left, this.top];
Chris@441:     }
Chris@441:   });
Chris@441: 
Chris@441:   function getLayout(element, preCompute) {
Chris@441:     return new Element.Layout(element, preCompute);
Chris@441:   }
Chris@441: 
Chris@441:   function measure(element, property) {
Chris@441:     return $(element).getLayout().get(property);
Chris@441:   }
Chris@441: 
Chris@441:   function getDimensions(element) {
Chris@441:     element = $(element);
Chris@441:     var display = Element.getStyle(element, 'display');
Chris@441: 
Chris@441:     if (display && display !== 'none') {
Chris@441:       return { width: element.offsetWidth, height: element.offsetHeight };
Chris@441:     }
Chris@441: 
Chris@441:     var style = element.style;
Chris@441:     var originalStyles = {
Chris@441:       visibility: style.visibility,
Chris@441:       position:   style.position,
Chris@441:       display:    style.display
Chris@441:     };
Chris@441: 
Chris@441:     var newStyles = {
Chris@441:       visibility: 'hidden',
Chris@441:       display:    'block'
Chris@441:     };
Chris@441: 
Chris@441:     if (originalStyles.position !== 'fixed')
Chris@441:       newStyles.position = 'absolute';
Chris@441: 
Chris@441:     Element.setStyle(element, newStyles);
Chris@441: 
Chris@441:     var dimensions = {
Chris@441:       width:  element.offsetWidth,
Chris@441:       height: element.offsetHeight
Chris@441:     };
Chris@441: 
Chris@441:     Element.setStyle(element, originalStyles);
Chris@441: 
Chris@441:     return dimensions;
Chris@441:   }
Chris@441: 
Chris@441:   function getOffsetParent(element) {
Chris@441:     element = $(element);
Chris@441: 
Chris@441:     if (isDocument(element) || isDetached(element) || isBody(element) || isHtml(element))
Chris@441:       return $(document.body);
Chris@441: 
Chris@441:     var isInline = (Element.getStyle(element, 'display') === 'inline');
Chris@441:     if (!isInline && element.offsetParent) return $(element.offsetParent);
Chris@441: 
Chris@441:     while ((element = element.parentNode) && element !== document.body) {
Chris@441:       if (Element.getStyle(element, 'position') !== 'static') {
Chris@441:         return isHtml(element) ? $(document.body) : $(element);
Chris@441:       }
Chris@441:     }
Chris@441: 
Chris@441:     return $(document.body);
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441:   function cumulativeOffset(element) {
Chris@441:     element = $(element);
Chris@441:     var valueT = 0, valueL = 0;
Chris@441:     if (element.parentNode) {
Chris@441:       do {
Chris@441:         valueT += element.offsetTop  || 0;
Chris@441:         valueL += element.offsetLeft || 0;
Chris@441:         element = element.offsetParent;
Chris@441:       } while (element);
Chris@441:     }
Chris@441:     return new Element.Offset(valueL, valueT);
Chris@441:   }
Chris@441: 
Chris@441:   function positionedOffset(element) {
Chris@441:     element = $(element);
Chris@441: 
Chris@441:     var layout = element.getLayout();
Chris@441: 
Chris@441:     var valueT = 0, valueL = 0;
Chris@441:     do {
Chris@441:       valueT += element.offsetTop  || 0;
Chris@441:       valueL += element.offsetLeft || 0;
Chris@441:       element = element.offsetParent;
Chris@441:       if (element) {
Chris@441:         if (isBody(element)) break;
Chris@441:         var p = Element.getStyle(element, 'position');
Chris@441:         if (p !== 'static') break;
Chris@441:       }
Chris@441:     } while (element);
Chris@441: 
Chris@441:     valueL -= layout.get('margin-top');
Chris@441:     valueT -= layout.get('margin-left');
Chris@441: 
Chris@441:     return new Element.Offset(valueL, valueT);
Chris@441:   }
Chris@441: 
Chris@441:   function cumulativeScrollOffset(element) {
Chris@441:     var valueT = 0, valueL = 0;
Chris@441:     do {
Chris@441:       valueT += element.scrollTop  || 0;
Chris@441:       valueL += element.scrollLeft || 0;
Chris@441:       element = element.parentNode;
Chris@441:     } while (element);
Chris@441:     return new Element.Offset(valueL, valueT);
Chris@441:   }
Chris@441: 
Chris@441:   function viewportOffset(forElement) {
Chris@441:     element = $(element);
Chris@441:     var valueT = 0, valueL = 0, docBody = document.body;
Chris@441: 
Chris@441:     var element = forElement;
Chris@441:     do {
Chris@441:       valueT += element.offsetTop  || 0;
Chris@441:       valueL += element.offsetLeft || 0;
Chris@441:       if (element.offsetParent == docBody &&
Chris@441:         Element.getStyle(element, 'position') == 'absolute') break;
Chris@441:     } while (element = element.offsetParent);
Chris@441: 
Chris@441:     element = forElement;
Chris@441:     do {
Chris@441:       if (element != docBody) {
Chris@441:         valueT -= element.scrollTop  || 0;
Chris@441:         valueL -= element.scrollLeft || 0;
Chris@441:       }
Chris@441:     } while (element = element.parentNode);
Chris@441:     return new Element.Offset(valueL, valueT);
Chris@441:   }
Chris@441: 
Chris@441:   function absolutize(element) {
Chris@441:     element = $(element);
Chris@441: 
Chris@441:     if (Element.getStyle(element, 'position') === 'absolute') {
Chris@441:       return element;
Chris@441:     }
Chris@441: 
Chris@441:     var offsetParent = getOffsetParent(element);
Chris@441:     var eOffset = element.viewportOffset(),
Chris@441:      pOffset = offsetParent.viewportOffset();
Chris@441: 
Chris@441:     var offset = eOffset.relativeTo(pOffset);
Chris@441:     var layout = element.getLayout();
Chris@441: 
Chris@441:     element.store('prototype_absolutize_original_styles', {
Chris@441:       left:   element.getStyle('left'),
Chris@441:       top:    element.getStyle('top'),
Chris@441:       width:  element.getStyle('width'),
Chris@441:       height: element.getStyle('height')
Chris@441:     });
Chris@441: 
Chris@441:     element.setStyle({
Chris@441:       position: 'absolute',
Chris@441:       top:    offset.top + 'px',
Chris@441:       left:   offset.left + 'px',
Chris@441:       width:  layout.get('width') + 'px',
Chris@441:       height: layout.get('height') + 'px'
Chris@441:     });
Chris@441: 
Chris@441:     return element;
Chris@441:   }
Chris@441: 
Chris@441:   function relativize(element) {
Chris@441:     element = $(element);
Chris@441:     if (Element.getStyle(element, 'position') === 'relative') {
Chris@441:       return element;
Chris@441:     }
Chris@441: 
Chris@441:     var originalStyles =
Chris@441:      element.retrieve('prototype_absolutize_original_styles');
Chris@441: 
Chris@441:     if (originalStyles) element.setStyle(originalStyles);
Chris@441:     return element;
Chris@441:   }
Chris@441: 
Chris@441:   if (Prototype.Browser.IE) {
Chris@441:     getOffsetParent = getOffsetParent.wrap(
Chris@441:       function(proceed, element) {
Chris@441:         element = $(element);
Chris@441: 
Chris@441:         if (isDocument(element) || isDetached(element) || isBody(element) || isHtml(element))
Chris@441:           return $(document.body);
Chris@441: 
Chris@441:         var position = element.getStyle('position');
Chris@441:         if (position !== 'static') return proceed(element);
Chris@441: 
Chris@441:         element.setStyle({ position: 'relative' });
Chris@441:         var value = proceed(element);
Chris@441:         element.setStyle({ position: position });
Chris@441:         return value;
Chris@441:       }
Chris@441:     );
Chris@441: 
Chris@441:     positionedOffset = positionedOffset.wrap(function(proceed, element) {
Chris@441:       element = $(element);
Chris@441:       if (!element.parentNode) return new Element.Offset(0, 0);
Chris@441:       var position = element.getStyle('position');
Chris@441:       if (position !== 'static') return proceed(element);
Chris@441: 
Chris@441:       var offsetParent = element.getOffsetParent();
Chris@441:       if (offsetParent && offsetParent.getStyle('position') === 'fixed')
Chris@441:         hasLayout(offsetParent);
Chris@441: 
Chris@441:       element.setStyle({ position: 'relative' });
Chris@441:       var value = proceed(element);
Chris@441:       element.setStyle({ position: position });
Chris@441:       return value;
Chris@441:     });
Chris@441:   } else if (Prototype.Browser.Webkit) {
Chris@441:     cumulativeOffset = function(element) {
Chris@441:       element = $(element);
Chris@441:       var valueT = 0, valueL = 0;
Chris@441:       do {
Chris@441:         valueT += element.offsetTop  || 0;
Chris@441:         valueL += element.offsetLeft || 0;
Chris@441:         if (element.offsetParent == document.body)
Chris@441:           if (Element.getStyle(element, 'position') == 'absolute') break;
Chris@441: 
Chris@441:         element = element.offsetParent;
Chris@441:       } while (element);
Chris@441: 
Chris@441:       return new Element.Offset(valueL, valueT);
Chris@441:     };
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441:   Element.addMethods({
Chris@441:     getLayout:              getLayout,
Chris@441:     measure:                measure,
Chris@441:     getDimensions:          getDimensions,
Chris@441:     getOffsetParent:        getOffsetParent,
Chris@441:     cumulativeOffset:       cumulativeOffset,
Chris@441:     positionedOffset:       positionedOffset,
Chris@441:     cumulativeScrollOffset: cumulativeScrollOffset,
Chris@441:     viewportOffset:         viewportOffset,
Chris@441:     absolutize:             absolutize,
Chris@441:     relativize:             relativize
Chris@441:   });
Chris@441: 
Chris@441:   function isBody(element) {
Chris@441:     return element.nodeName.toUpperCase() === 'BODY';
Chris@441:   }
Chris@441: 
Chris@441:   function isHtml(element) {
Chris@441:     return element.nodeName.toUpperCase() === 'HTML';
Chris@441:   }
Chris@441: 
Chris@441:   function isDocument(element) {
Chris@441:     return element.nodeType === Node.DOCUMENT_NODE;
Chris@441:   }
Chris@441: 
Chris@441:   function isDetached(element) {
Chris@441:     return element !== document.body &&
Chris@441:      !Element.descendantOf(element, document.body);
Chris@441:   }
Chris@441: 
Chris@441:   if ('getBoundingClientRect' in document.documentElement) {
Chris@441:     Element.addMethods({
Chris@441:       viewportOffset: function(element) {
Chris@441:         element = $(element);
Chris@441:         if (isDetached(element)) return new Element.Offset(0, 0);
Chris@441: 
Chris@441:         var rect = element.getBoundingClientRect(),
Chris@441:          docEl = document.documentElement;
Chris@441:         return new Element.Offset(rect.left - docEl.clientLeft,
Chris@441:          rect.top - docEl.clientTop);
Chris@441:       }
Chris@441:     });
Chris@441:   }
Chris@441: })();
Chris@441: window.$$ = function() {
Chris@441:   var expression = $A(arguments).join(', ');
Chris@441:   return Prototype.Selector.select(expression, document);
Chris@441: };
Chris@441: 
Chris@441: Prototype.Selector = (function() {
Chris@441: 
Chris@441:   function select() {
Chris@441:     throw new Error('Method "Prototype.Selector.select" must be defined.');
Chris@441:   }
Chris@441: 
Chris@441:   function match() {
Chris@441:     throw new Error('Method "Prototype.Selector.match" must be defined.');
Chris@441:   }
Chris@441: 
Chris@441:   function find(elements, expression, index) {
Chris@441:     index = index || 0;
Chris@441:     var match = Prototype.Selector.match, length = elements.length, matchIndex = 0, i;
Chris@441: 
Chris@441:     for (i = 0; i < length; i++) {
Chris@441:       if (match(elements[i], expression) && index == matchIndex++) {
Chris@441:         return Element.extend(elements[i]);
Chris@441:       }
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   function extendElements(elements) {
Chris@441:     for (var i = 0, length = elements.length; i < length; i++) {
Chris@441:       Element.extend(elements[i]);
Chris@441:     }
Chris@441:     return elements;
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441:   var K = Prototype.K;
Chris@441: 
Chris@441:   return {
Chris@441:     select: select,
Chris@441:     match: match,
Chris@441:     find: find,
Chris@441:     extendElements: (Element.extend === K) ? K : extendElements,
Chris@441:     extendElement: Element.extend
Chris@441:   };
Chris@441: })();
Chris@441: Prototype._original_property = window.Sizzle;
Chris@441: /*!
Chris@441:  * Sizzle CSS Selector Engine - v1.0
Chris@441:  *  Copyright 2009, The Dojo Foundation
Chris@441:  *  Released under the MIT, BSD, and GPL Licenses.
Chris@441:  *  More information: http://sizzlejs.com/
Chris@441:  */
Chris@441: (function(){
Chris@441: 
Chris@441: var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g,
Chris@441:   done = 0,
Chris@441:   toString = Object.prototype.toString,
Chris@441:   hasDuplicate = false,
Chris@441:   baseHasDuplicate = true;
Chris@441: 
Chris@441: [0, 0].sort(function(){
Chris@441:   baseHasDuplicate = false;
Chris@441:   return 0;
Chris@441: });
Chris@441: 
Chris@441: var Sizzle = function(selector, context, results, seed) {
Chris@441:   results = results || [];
Chris@441:   var origContext = context = context || document;
Chris@441: 
Chris@441:   if ( context.nodeType !== 1 && context.nodeType !== 9 ) {
Chris@441:     return [];
Chris@441:   }
Chris@441: 
Chris@441:   if ( !selector || typeof selector !== "string" ) {
Chris@441:     return results;
Chris@441:   }
Chris@441: 
Chris@441:   var parts = [], m, set, checkSet, check, mode, extra, prune = true, contextXML = isXML(context),
Chris@441:     soFar = selector;
Chris@441: 
Chris@441:   while ( (chunker.exec(""), m = chunker.exec(soFar)) !== null ) {
Chris@441:     soFar = m[3];
Chris@441: 
Chris@441:     parts.push( m[1] );
Chris@441: 
Chris@441:     if ( m[2] ) {
Chris@441:       extra = m[3];
Chris@441:       break;
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   if ( parts.length > 1 && origPOS.exec( selector ) ) {
Chris@441:     if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
Chris@441:       set = posProcess( parts[0] + parts[1], context );
Chris@441:     } else {
Chris@441:       set = Expr.relative[ parts[0] ] ?
Chris@441:         [ context ] :
Chris@441:         Sizzle( parts.shift(), context );
Chris@441: 
Chris@441:       while ( parts.length ) {
Chris@441:         selector = parts.shift();
Chris@441: 
Chris@441:         if ( Expr.relative[ selector ] )
Chris@441:           selector += parts.shift();
Chris@441: 
Chris@441:         set = posProcess( selector, set );
Chris@441:       }
Chris@441:     }
Chris@441:   } else {
Chris@441:     if ( !seed && parts.length > 1 && context.nodeType === 9 && !contextXML &&
Chris@441:         Expr.match.ID.test(parts[0]) && !Expr.match.ID.test(parts[parts.length - 1]) ) {
Chris@441:       var ret = Sizzle.find( parts.shift(), context, contextXML );
Chris@441:       context = ret.expr ? Sizzle.filter( ret.expr, ret.set )[0] : ret.set[0];
Chris@441:     }
Chris@441: 
Chris@441:     if ( context ) {
Chris@441:       var ret = seed ?
Chris@441:         { expr: parts.pop(), set: makeArray(seed) } :
Chris@441:         Sizzle.find( parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML );
Chris@441:       set = ret.expr ? Sizzle.filter( ret.expr, ret.set ) : ret.set;
Chris@441: 
Chris@441:       if ( parts.length > 0 ) {
Chris@441:         checkSet = makeArray(set);
Chris@441:       } else {
Chris@441:         prune = false;
Chris@441:       }
Chris@441: 
Chris@441:       while ( parts.length ) {
Chris@441:         var cur = parts.pop(), pop = cur;
Chris@441: 
Chris@441:         if ( !Expr.relative[ cur ] ) {
Chris@441:           cur = "";
Chris@441:         } else {
Chris@441:           pop = parts.pop();
Chris@441:         }
Chris@441: 
Chris@441:         if ( pop == null ) {
Chris@441:           pop = context;
Chris@441:         }
Chris@441: 
Chris@441:         Expr.relative[ cur ]( checkSet, pop, contextXML );
Chris@441:       }
Chris@441:     } else {
Chris@441:       checkSet = parts = [];
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   if ( !checkSet ) {
Chris@441:     checkSet = set;
Chris@441:   }
Chris@441: 
Chris@441:   if ( !checkSet ) {
Chris@441:     throw "Syntax error, unrecognized expression: " + (cur || selector);
Chris@441:   }
Chris@441: 
Chris@441:   if ( toString.call(checkSet) === "[object Array]" ) {
Chris@441:     if ( !prune ) {
Chris@441:       results.push.apply( results, checkSet );
Chris@441:     } else if ( context && context.nodeType === 1 ) {
Chris@441:       for ( var i = 0; checkSet[i] != null; i++ ) {
Chris@441:         if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
Chris@441:           results.push( set[i] );
Chris@441:         }
Chris@441:       }
Chris@441:     } else {
Chris@441:       for ( var i = 0; checkSet[i] != null; i++ ) {
Chris@441:         if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
Chris@441:           results.push( set[i] );
Chris@441:         }
Chris@441:       }
Chris@441:     }
Chris@441:   } else {
Chris@441:     makeArray( checkSet, results );
Chris@441:   }
Chris@441: 
Chris@441:   if ( extra ) {
Chris@441:     Sizzle( extra, origContext, results, seed );
Chris@441:     Sizzle.uniqueSort( results );
Chris@441:   }
Chris@441: 
Chris@441:   return results;
Chris@441: };
Chris@441: 
Chris@441: Sizzle.uniqueSort = function(results){
Chris@441:   if ( sortOrder ) {
Chris@441:     hasDuplicate = baseHasDuplicate;
Chris@441:     results.sort(sortOrder);
Chris@441: 
Chris@441:     if ( hasDuplicate ) {
Chris@441:       for ( var i = 1; i < results.length; i++ ) {
Chris@441:         if ( results[i] === results[i-1] ) {
Chris@441:           results.splice(i--, 1);
Chris@441:         }
Chris@441:       }
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   return results;
Chris@441: };
Chris@441: 
Chris@441: Sizzle.matches = function(expr, set){
Chris@441:   return Sizzle(expr, null, null, set);
Chris@441: };
Chris@441: 
Chris@441: Sizzle.find = function(expr, context, isXML){
Chris@441:   var set, match;
Chris@441: 
Chris@441:   if ( !expr ) {
Chris@441:     return [];
Chris@441:   }
Chris@441: 
Chris@441:   for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
Chris@441:     var type = Expr.order[i], match;
Chris@441: 
Chris@441:     if ( (match = Expr.leftMatch[ type ].exec( expr )) ) {
Chris@441:       var left = match[1];
Chris@441:       match.splice(1,1);
Chris@441: 
Chris@441:       if ( left.substr( left.length - 1 ) !== "\\" ) {
Chris@441:         match[1] = (match[1] || "").replace(/\\/g, "");
Chris@441:         set = Expr.find[ type ]( match, context, isXML );
Chris@441:         if ( set != null ) {
Chris@441:           expr = expr.replace( Expr.match[ type ], "" );
Chris@0:           break;
Chris@0:         }
Chris@0:       }
Chris@0:     }
Chris@441:   }
Chris@441: 
Chris@441:   if ( !set ) {
Chris@441:     set = context.getElementsByTagName("*");
Chris@441:   }
Chris@441: 
Chris@441:   return {set: set, expr: expr};
Chris@441: };
Chris@441: 
Chris@441: Sizzle.filter = function(expr, set, inplace, not){
Chris@441:   var old = expr, result = [], curLoop = set, match, anyFound,
Chris@441:     isXMLFilter = set && set[0] && isXML(set[0]);
Chris@441: 
Chris@441:   while ( expr && set.length ) {
Chris@441:     for ( var type in Expr.filter ) {
Chris@441:       if ( (match = Expr.match[ type ].exec( expr )) != null ) {
Chris@441:         var filter = Expr.filter[ type ], found, item;
Chris@441:         anyFound = false;
Chris@441: 
Chris@441:         if ( curLoop == result ) {
Chris@441:           result = [];
Chris@441:         }
Chris@441: 
Chris@441:         if ( Expr.preFilter[ type ] ) {
Chris@441:           match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not, isXMLFilter );
Chris@441: 
Chris@441:           if ( !match ) {
Chris@441:             anyFound = found = true;
Chris@441:           } else if ( match === true ) {
Chris@441:             continue;
Chris@441:           }
Chris@441:         }
Chris@441: 
Chris@441:         if ( match ) {
Chris@441:           for ( var i = 0; (item = curLoop[i]) != null; i++ ) {
Chris@441:             if ( item ) {
Chris@441:               found = filter( item, match, i, curLoop );
Chris@441:               var pass = not ^ !!found;
Chris@441: 
Chris@441:               if ( inplace && found != null ) {
Chris@441:                 if ( pass ) {
Chris@441:                   anyFound = true;
Chris@441:                 } else {
Chris@441:                   curLoop[i] = false;
Chris@441:                 }
Chris@441:               } else if ( pass ) {
Chris@441:                 result.push( item );
Chris@441:                 anyFound = true;
Chris@441:               }
Chris@441:             }
Chris@441:           }
Chris@441:         }
Chris@441: 
Chris@441:         if ( found !== undefined ) {
Chris@441:           if ( !inplace ) {
Chris@441:             curLoop = result;
Chris@441:           }
Chris@441: 
Chris@441:           expr = expr.replace( Expr.match[ type ], "" );
Chris@441: 
Chris@441:           if ( !anyFound ) {
Chris@441:             return [];
Chris@441:           }
Chris@441: 
Chris@0:           break;
Chris@0:         }
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@441:     if ( expr == old ) {
Chris@441:       if ( anyFound == null ) {
Chris@441:         throw "Syntax error, unrecognized expression: " + expr;
Chris@441:       } else {
Chris@441:         break;
Chris@441:       }
Chris@441:     }
Chris@441: 
Chris@441:     old = expr;
Chris@441:   }
Chris@441: 
Chris@441:   return curLoop;
Chris@441: };
Chris@441: 
Chris@441: var Expr = Sizzle.selectors = {
Chris@441:   order: [ "ID", "NAME", "TAG" ],
Chris@441:   match: {
Chris@441:     ID: /#((?:[\w\u00c0-\uFFFF-]|\\.)+)/,
Chris@441:     CLASS: /\.((?:[\w\u00c0-\uFFFF-]|\\.)+)/,
Chris@441:     NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF-]|\\.)+)['"]*\]/,
Chris@441:     ATTR: /\[\s*((?:[\w\u00c0-\uFFFF-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
Chris@441:     TAG: /^((?:[\w\u00c0-\uFFFF\*-]|\\.)+)/,
Chris@441:     CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
Chris@441:     POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
Chris@441:     PSEUDO: /:((?:[\w\u00c0-\uFFFF-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
Chris@0:   },
Chris@441:   leftMatch: {},
Chris@441:   attrMap: {
Chris@441:     "class": "className",
Chris@441:     "for": "htmlFor"
Chris@441:   },
Chris@441:   attrHandle: {
Chris@441:     href: function(elem){
Chris@441:       return elem.getAttribute("href");
Chris@0:     }
Chris@0:   },
Chris@441:   relative: {
Chris@441:     "+": function(checkSet, part, isXML){
Chris@441:       var isPartStr = typeof part === "string",
Chris@441:         isTag = isPartStr && !/\W/.test(part),
Chris@441:         isPartStrNotTag = isPartStr && !isTag;
Chris@441: 
Chris@441:       if ( isTag && !isXML ) {
Chris@441:         part = part.toUpperCase();
Chris@441:       }
Chris@441: 
Chris@441:       for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
Chris@441:         if ( (elem = checkSet[i]) ) {
Chris@441:           while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {}
Chris@441: 
Chris@441:           checkSet[i] = isPartStrNotTag || elem && elem.nodeName === part ?
Chris@441:             elem || false :
Chris@441:             elem === part;
Chris@441:         }
Chris@441:       }
Chris@441: 
Chris@441:       if ( isPartStrNotTag ) {
Chris@441:         Sizzle.filter( part, checkSet, true );
Chris@441:       }
Chris@441:     },
Chris@441:     ">": function(checkSet, part, isXML){
Chris@441:       var isPartStr = typeof part === "string";
Chris@441: 
Chris@441:       if ( isPartStr && !/\W/.test(part) ) {
Chris@441:         part = isXML ? part : part.toUpperCase();
Chris@441: 
Chris@441:         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
Chris@441:           var elem = checkSet[i];
Chris@441:           if ( elem ) {
Chris@441:             var parent = elem.parentNode;
Chris@441:             checkSet[i] = parent.nodeName === part ? parent : false;
Chris@441:           }
Chris@441:         }
Chris@441:       } else {
Chris@441:         for ( var i = 0, l = checkSet.length; i < l; i++ ) {
Chris@441:           var elem = checkSet[i];
Chris@441:           if ( elem ) {
Chris@441:             checkSet[i] = isPartStr ?
Chris@441:               elem.parentNode :
Chris@441:               elem.parentNode === part;
Chris@441:           }
Chris@441:         }
Chris@441: 
Chris@441:         if ( isPartStr ) {
Chris@441:           Sizzle.filter( part, checkSet, true );
Chris@441:         }
Chris@441:       }
Chris@441:     },
Chris@441:     "": function(checkSet, part, isXML){
Chris@441:       var doneName = done++, checkFn = dirCheck;
Chris@441: 
Chris@441:       if ( !/\W/.test(part) ) {
Chris@441:         var nodeCheck = part = isXML ? part : part.toUpperCase();
Chris@441:         checkFn = dirNodeCheck;
Chris@441:       }
Chris@441: 
Chris@441:       checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML);
Chris@441:     },
Chris@441:     "~": function(checkSet, part, isXML){
Chris@441:       var doneName = done++, checkFn = dirCheck;
Chris@441: 
Chris@441:       if ( typeof part === "string" && !/\W/.test(part) ) {
Chris@441:         var nodeCheck = part = isXML ? part : part.toUpperCase();
Chris@441:         checkFn = dirNodeCheck;
Chris@441:       }
Chris@441: 
Chris@441:       checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML);
Chris@441:     }
Chris@441:   },
Chris@441:   find: {
Chris@441:     ID: function(match, context, isXML){
Chris@441:       if ( typeof context.getElementById !== "undefined" && !isXML ) {
Chris@441:         var m = context.getElementById(match[1]);
Chris@441:         return m ? [m] : [];
Chris@441:       }
Chris@441:     },
Chris@441:     NAME: function(match, context, isXML){
Chris@441:       if ( typeof context.getElementsByName !== "undefined" ) {
Chris@441:         var ret = [], results = context.getElementsByName(match[1]);
Chris@441: 
Chris@441:         for ( var i = 0, l = results.length; i < l; i++ ) {
Chris@441:           if ( results[i].getAttribute("name") === match[1] ) {
Chris@441:             ret.push( results[i] );
Chris@441:           }
Chris@441:         }
Chris@441: 
Chris@441:         return ret.length === 0 ? null : ret;
Chris@441:       }
Chris@441:     },
Chris@441:     TAG: function(match, context){
Chris@441:       return context.getElementsByTagName(match[1]);
Chris@441:     }
Chris@441:   },
Chris@441:   preFilter: {
Chris@441:     CLASS: function(match, curLoop, inplace, result, not, isXML){
Chris@441:       match = " " + match[1].replace(/\\/g, "") + " ";
Chris@441: 
Chris@441:       if ( isXML ) {
Chris@441:         return match;
Chris@441:       }
Chris@441: 
Chris@441:       for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) {
Chris@441:         if ( elem ) {
Chris@441:           if ( not ^ (elem.className && (" " + elem.className + " ").indexOf(match) >= 0) ) {
Chris@441:             if ( !inplace )
Chris@441:               result.push( elem );
Chris@441:           } else if ( inplace ) {
Chris@441:             curLoop[i] = false;
Chris@0:           }
Chris@0:         }
Chris@0:       }
Chris@441: 
Chris@441:       return false;
Chris@441:     },
Chris@441:     ID: function(match){
Chris@441:       return match[1].replace(/\\/g, "");
Chris@441:     },
Chris@441:     TAG: function(match, curLoop){
Chris@441:       for ( var i = 0; curLoop[i] === false; i++ ){}
Chris@441:       return curLoop[i] && isXML(curLoop[i]) ? match[1] : match[1].toUpperCase();
Chris@441:     },
Chris@441:     CHILD: function(match){
Chris@441:       if ( match[1] == "nth" ) {
Chris@441:         var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
Chris@441:           match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
Chris@441:           !/\D/.test( match[2] ) && "0n+" + match[2] || match[2]);
Chris@441: 
Chris@441:         match[2] = (test[1] + (test[2] || 1)) - 0;
Chris@441:         match[3] = test[3] - 0;
Chris@441:       }
Chris@441: 
Chris@441:       match[0] = done++;
Chris@441: 
Chris@441:       return match;
Chris@441:     },
Chris@441:     ATTR: function(match, curLoop, inplace, result, not, isXML){
Chris@441:       var name = match[1].replace(/\\/g, "");
Chris@441: 
Chris@441:       if ( !isXML && Expr.attrMap[name] ) {
Chris@441:         match[1] = Expr.attrMap[name];
Chris@441:       }
Chris@441: 
Chris@441:       if ( match[2] === "~=" ) {
Chris@441:         match[4] = " " + match[4] + " ";
Chris@441:       }
Chris@441: 
Chris@441:       return match;
Chris@441:     },
Chris@441:     PSEUDO: function(match, curLoop, inplace, result, not){
Chris@441:       if ( match[1] === "not" ) {
Chris@441:         if ( ( chunker.exec(match[3]) || "" ).length > 1 || /^\w/.test(match[3]) ) {
Chris@441:           match[3] = Sizzle(match[3], null, null, curLoop);
Chris@441:         } else {
Chris@441:           var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
Chris@441:           if ( !inplace ) {
Chris@441:             result.push.apply( result, ret );
Chris@441:           }
Chris@441:           return false;
Chris@441:         }
Chris@441:       } else if ( Expr.match.POS.test( match[0] ) || Expr.match.CHILD.test( match[0] ) ) {
Chris@441:         return true;
Chris@441:       }
Chris@441: 
Chris@441:       return match;
Chris@441:     },
Chris@441:     POS: function(match){
Chris@441:       match.unshift( true );
Chris@441:       return match;
Chris@0:     }
Chris@441:   },
Chris@441:   filters: {
Chris@441:     enabled: function(elem){
Chris@441:       return elem.disabled === false && elem.type !== "hidden";
Chris@441:     },
Chris@441:     disabled: function(elem){
Chris@441:       return elem.disabled === true;
Chris@441:     },
Chris@441:     checked: function(elem){
Chris@441:       return elem.checked === true;
Chris@441:     },
Chris@441:     selected: function(elem){
Chris@441:       elem.parentNode.selectedIndex;
Chris@441:       return elem.selected === true;
Chris@441:     },
Chris@441:     parent: function(elem){
Chris@441:       return !!elem.firstChild;
Chris@441:     },
Chris@441:     empty: function(elem){
Chris@441:       return !elem.firstChild;
Chris@441:     },
Chris@441:     has: function(elem, i, match){
Chris@441:       return !!Sizzle( match[3], elem ).length;
Chris@441:     },
Chris@441:     header: function(elem){
Chris@441:       return /h\d/i.test( elem.nodeName );
Chris@441:     },
Chris@441:     text: function(elem){
Chris@441:       return "text" === elem.type;
Chris@441:     },
Chris@441:     radio: function(elem){
Chris@441:       return "radio" === elem.type;
Chris@441:     },
Chris@441:     checkbox: function(elem){
Chris@441:       return "checkbox" === elem.type;
Chris@441:     },
Chris@441:     file: function(elem){
Chris@441:       return "file" === elem.type;
Chris@441:     },
Chris@441:     password: function(elem){
Chris@441:       return "password" === elem.type;
Chris@441:     },
Chris@441:     submit: function(elem){
Chris@441:       return "submit" === elem.type;
Chris@441:     },
Chris@441:     image: function(elem){
Chris@441:       return "image" === elem.type;
Chris@441:     },
Chris@441:     reset: function(elem){
Chris@441:       return "reset" === elem.type;
Chris@441:     },
Chris@441:     button: function(elem){
Chris@441:       return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
Chris@441:     },
Chris@441:     input: function(elem){
Chris@441:       return /input|select|textarea|button/i.test(elem.nodeName);
Chris@441:     }
Chris@441:   },
Chris@441:   setFilters: {
Chris@441:     first: function(elem, i){
Chris@441:       return i === 0;
Chris@441:     },
Chris@441:     last: function(elem, i, match, array){
Chris@441:       return i === array.length - 1;
Chris@441:     },
Chris@441:     even: function(elem, i){
Chris@441:       return i % 2 === 0;
Chris@441:     },
Chris@441:     odd: function(elem, i){
Chris@441:       return i % 2 === 1;
Chris@441:     },
Chris@441:     lt: function(elem, i, match){
Chris@441:       return i < match[3] - 0;
Chris@441:     },
Chris@441:     gt: function(elem, i, match){
Chris@441:       return i > match[3] - 0;
Chris@441:     },
Chris@441:     nth: function(elem, i, match){
Chris@441:       return match[3] - 0 == i;
Chris@441:     },
Chris@441:     eq: function(elem, i, match){
Chris@441:       return match[3] - 0 == i;
Chris@441:     }
Chris@441:   },
Chris@441:   filter: {
Chris@441:     PSEUDO: function(elem, match, i, array){
Chris@441:       var name = match[1], filter = Expr.filters[ name ];
Chris@441: 
Chris@441:       if ( filter ) {
Chris@441:         return filter( elem, i, match, array );
Chris@441:       } else if ( name === "contains" ) {
Chris@441:         return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
Chris@441:       } else if ( name === "not" ) {
Chris@441:         var not = match[3];
Chris@441: 
Chris@441:         for ( var i = 0, l = not.length; i < l; i++ ) {
Chris@441:           if ( not[i] === elem ) {
Chris@441:             return false;
Chris@441:           }
Chris@441:         }
Chris@441: 
Chris@441:         return true;
Chris@441:       }
Chris@441:     },
Chris@441:     CHILD: function(elem, match){
Chris@441:       var type = match[1], node = elem;
Chris@441:       switch (type) {
Chris@441:         case 'only':
Chris@441:         case 'first':
Chris@441:           while ( (node = node.previousSibling) )  {
Chris@441:             if ( node.nodeType === 1 ) return false;
Chris@441:           }
Chris@441:           if ( type == 'first') return true;
Chris@441:           node = elem;
Chris@441:         case 'last':
Chris@441:           while ( (node = node.nextSibling) )  {
Chris@441:             if ( node.nodeType === 1 ) return false;
Chris@441:           }
Chris@441:           return true;
Chris@441:         case 'nth':
Chris@441:           var first = match[2], last = match[3];
Chris@441: 
Chris@441:           if ( first == 1 && last == 0 ) {
Chris@441:             return true;
Chris@441:           }
Chris@441: 
Chris@441:           var doneName = match[0],
Chris@441:             parent = elem.parentNode;
Chris@441: 
Chris@441:           if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
Chris@441:             var count = 0;
Chris@441:             for ( node = parent.firstChild; node; node = node.nextSibling ) {
Chris@441:               if ( node.nodeType === 1 ) {
Chris@441:                 node.nodeIndex = ++count;
Chris@441:               }
Chris@441:             }
Chris@441:             parent.sizcache = doneName;
Chris@441:           }
Chris@441: 
Chris@441:           var diff = elem.nodeIndex - last;
Chris@441:           if ( first == 0 ) {
Chris@441:             return diff == 0;
Chris@441:           } else {
Chris@441:             return ( diff % first == 0 && diff / first >= 0 );
Chris@441:           }
Chris@441:       }
Chris@441:     },
Chris@441:     ID: function(elem, match){
Chris@441:       return elem.nodeType === 1 && elem.getAttribute("id") === match;
Chris@441:     },
Chris@441:     TAG: function(elem, match){
Chris@441:       return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
Chris@441:     },
Chris@441:     CLASS: function(elem, match){
Chris@441:       return (" " + (elem.className || elem.getAttribute("class")) + " ")
Chris@441:         .indexOf( match ) > -1;
Chris@441:     },
Chris@441:     ATTR: function(elem, match){
Chris@441:       var name = match[1],
Chris@441:         result = Expr.attrHandle[ name ] ?
Chris@441:           Expr.attrHandle[ name ]( elem ) :
Chris@441:           elem[ name ] != null ?
Chris@441:             elem[ name ] :
Chris@441:             elem.getAttribute( name ),
Chris@441:         value = result + "",
Chris@441:         type = match[2],
Chris@441:         check = match[4];
Chris@441: 
Chris@441:       return result == null ?
Chris@441:         type === "!=" :
Chris@441:         type === "=" ?
Chris@441:         value === check :
Chris@441:         type === "*=" ?
Chris@441:         value.indexOf(check) >= 0 :
Chris@441:         type === "~=" ?
Chris@441:         (" " + value + " ").indexOf(check) >= 0 :
Chris@441:         !check ?
Chris@441:         value && result !== false :
Chris@441:         type === "!=" ?
Chris@441:         value != check :
Chris@441:         type === "^=" ?
Chris@441:         value.indexOf(check) === 0 :
Chris@441:         type === "$=" ?
Chris@441:         value.substr(value.length - check.length) === check :
Chris@441:         type === "|=" ?
Chris@441:         value === check || value.substr(0, check.length + 1) === check + "-" :
Chris@441:         false;
Chris@441:     },
Chris@441:     POS: function(elem, match, i, array){
Chris@441:       var name = match[2], filter = Expr.setFilters[ name ];
Chris@441: 
Chris@441:       if ( filter ) {
Chris@441:         return filter( elem, i, match, array );
Chris@0:       }
Chris@0:     }
Chris@441:   }
Chris@441: };
Chris@441: 
Chris@441: var origPOS = Expr.match.POS;
Chris@441: 
Chris@441: for ( var type in Expr.match ) {
Chris@441:   Expr.match[ type ] = new RegExp( Expr.match[ type ].source + /(?![^\[]*\])(?![^\(]*\))/.source );
Chris@441:   Expr.leftMatch[ type ] = new RegExp( /(^(?:.|\r|\n)*?)/.source + Expr.match[ type ].source );
Chris@441: }
Chris@441: 
Chris@441: var makeArray = function(array, results) {
Chris@441:   array = Array.prototype.slice.call( array, 0 );
Chris@441: 
Chris@441:   if ( results ) {
Chris@441:     results.push.apply( results, array );
Chris@441:     return results;
Chris@441:   }
Chris@441: 
Chris@441:   return array;
Chris@441: };
Chris@441: 
Chris@441: try {
Chris@441:   Array.prototype.slice.call( document.documentElement.childNodes, 0 );
Chris@441: 
Chris@441: } catch(e){
Chris@441:   makeArray = function(array, results) {
Chris@441:     var ret = results || [];
Chris@441: 
Chris@441:     if ( toString.call(array) === "[object Array]" ) {
Chris@441:       Array.prototype.push.apply( ret, array );
Chris@441:     } else {
Chris@441:       if ( typeof array.length === "number" ) {
Chris@441:         for ( var i = 0, l = array.length; i < l; i++ ) {
Chris@441:           ret.push( array[i] );
Chris@0:         }
Chris@441:       } else {
Chris@441:         for ( var i = 0; array[i]; i++ ) {
Chris@441:           ret.push( array[i] );
Chris@0:         }
Chris@0:       }
Chris@0:     }
Chris@441: 
Chris@441:     return ret;
Chris@441:   };
Chris@441: }
Chris@441: 
Chris@441: var sortOrder;
Chris@441: 
Chris@441: if ( document.documentElement.compareDocumentPosition ) {
Chris@441:   sortOrder = function( a, b ) {
Chris@441:     if ( !a.compareDocumentPosition || !b.compareDocumentPosition ) {
Chris@441:       if ( a == b ) {
Chris@441:         hasDuplicate = true;
Chris@441:       }
Chris@441:       return 0;
Chris@0:     }
Chris@441: 
Chris@441:     var ret = a.compareDocumentPosition(b) & 4 ? -1 : a === b ? 0 : 1;
Chris@441:     if ( ret === 0 ) {
Chris@441:       hasDuplicate = true;
Chris@441:     }
Chris@441:     return ret;
Chris@441:   };
Chris@441: } else if ( "sourceIndex" in document.documentElement ) {
Chris@441:   sortOrder = function( a, b ) {
Chris@441:     if ( !a.sourceIndex || !b.sourceIndex ) {
Chris@441:       if ( a == b ) {
Chris@441:         hasDuplicate = true;
Chris@441:       }
Chris@441:       return 0;
Chris@441:     }
Chris@441: 
Chris@441:     var ret = a.sourceIndex - b.sourceIndex;
Chris@441:     if ( ret === 0 ) {
Chris@441:       hasDuplicate = true;
Chris@441:     }
Chris@441:     return ret;
Chris@441:   };
Chris@441: } else if ( document.createRange ) {
Chris@441:   sortOrder = function( a, b ) {
Chris@441:     if ( !a.ownerDocument || !b.ownerDocument ) {
Chris@441:       if ( a == b ) {
Chris@441:         hasDuplicate = true;
Chris@441:       }
Chris@441:       return 0;
Chris@441:     }
Chris@441: 
Chris@441:     var aRange = a.ownerDocument.createRange(), bRange = b.ownerDocument.createRange();
Chris@441:     aRange.setStart(a, 0);
Chris@441:     aRange.setEnd(a, 0);
Chris@441:     bRange.setStart(b, 0);
Chris@441:     bRange.setEnd(b, 0);
Chris@441:     var ret = aRange.compareBoundaryPoints(Range.START_TO_END, bRange);
Chris@441:     if ( ret === 0 ) {
Chris@441:       hasDuplicate = true;
Chris@441:     }
Chris@441:     return ret;
Chris@441:   };
Chris@441: }
Chris@441: 
Chris@441: (function(){
Chris@441:   var form = document.createElement("div"),
Chris@441:     id = "script" + (new Date).getTime();
Chris@441:   form.innerHTML = "<a name='" + id + "'/>";
Chris@441: 
Chris@441:   var root = document.documentElement;
Chris@441:   root.insertBefore( form, root.firstChild );
Chris@441: 
Chris@441:   if ( !!document.getElementById( id ) ) {
Chris@441:     Expr.find.ID = function(match, context, isXML){
Chris@441:       if ( typeof context.getElementById !== "undefined" && !isXML ) {
Chris@441:         var m = context.getElementById(match[1]);
Chris@441:         return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
Chris@441:       }
Chris@441:     };
Chris@441: 
Chris@441:     Expr.filter.ID = function(elem, match){
Chris@441:       var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
Chris@441:       return elem.nodeType === 1 && node && node.nodeValue === match;
Chris@441:     };
Chris@441:   }
Chris@441: 
Chris@441:   root.removeChild( form );
Chris@441:   root = form = null; // release memory in IE
Chris@441: })();
Chris@441: 
Chris@441: (function(){
Chris@441: 
Chris@441:   var div = document.createElement("div");
Chris@441:   div.appendChild( document.createComment("") );
Chris@441: 
Chris@441:   if ( div.getElementsByTagName("*").length > 0 ) {
Chris@441:     Expr.find.TAG = function(match, context){
Chris@441:       var results = context.getElementsByTagName(match[1]);
Chris@441: 
Chris@441:       if ( match[1] === "*" ) {
Chris@441:         var tmp = [];
Chris@441: 
Chris@441:         for ( var i = 0; results[i]; i++ ) {
Chris@441:           if ( results[i].nodeType === 1 ) {
Chris@441:             tmp.push( results[i] );
Chris@441:           }
Chris@0:         }
Chris@441: 
Chris@441:         results = tmp;
Chris@0:       }
Chris@441: 
Chris@441:       return results;
Chris@441:     };
Chris@441:   }
Chris@441: 
Chris@441:   div.innerHTML = "<a href='#'></a>";
Chris@441:   if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
Chris@441:       div.firstChild.getAttribute("href") !== "#" ) {
Chris@441:     Expr.attrHandle.href = function(elem){
Chris@441:       return elem.getAttribute("href", 2);
Chris@441:     };
Chris@441:   }
Chris@441: 
Chris@441:   div = null; // release memory in IE
Chris@441: })();
Chris@441: 
Chris@441: if ( document.querySelectorAll ) (function(){
Chris@441:   var oldSizzle = Sizzle, div = document.createElement("div");
Chris@441:   div.innerHTML = "<p class='TEST'></p>";
Chris@441: 
Chris@441:   if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
Chris@441:     return;
Chris@441:   }
Chris@441: 
Chris@441:   Sizzle = function(query, context, extra, seed){
Chris@441:     context = context || document;
Chris@441: 
Chris@441:     if ( !seed && context.nodeType === 9 && !isXML(context) ) {
Chris@441:       try {
Chris@441:         return makeArray( context.querySelectorAll(query), extra );
Chris@441:       } catch(e){}
Chris@441:     }
Chris@441: 
Chris@441:     return oldSizzle(query, context, extra, seed);
Chris@441:   };
Chris@441: 
Chris@441:   for ( var prop in oldSizzle ) {
Chris@441:     Sizzle[ prop ] = oldSizzle[ prop ];
Chris@441:   }
Chris@441: 
Chris@441:   div = null; // release memory in IE
Chris@441: })();
Chris@441: 
Chris@441: if ( document.getElementsByClassName && document.documentElement.getElementsByClassName ) (function(){
Chris@441:   var div = document.createElement("div");
Chris@441:   div.innerHTML = "<div class='test e'></div><div class='test'></div>";
Chris@441: 
Chris@441:   if ( div.getElementsByClassName("e").length === 0 )
Chris@441:     return;
Chris@441: 
Chris@441:   div.lastChild.className = "e";
Chris@441: 
Chris@441:   if ( div.getElementsByClassName("e").length === 1 )
Chris@441:     return;
Chris@441: 
Chris@441:   Expr.order.splice(1, 0, "CLASS");
Chris@441:   Expr.find.CLASS = function(match, context, isXML) {
Chris@441:     if ( typeof context.getElementsByClassName !== "undefined" && !isXML ) {
Chris@441:       return context.getElementsByClassName(match[1]);
Chris@441:     }
Chris@441:   };
Chris@441: 
Chris@441:   div = null; // release memory in IE
Chris@441: })();
Chris@441: 
Chris@441: function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
Chris@441:   var sibDir = dir == "previousSibling" && !isXML;
Chris@441:   for ( var i = 0, l = checkSet.length; i < l; i++ ) {
Chris@441:     var elem = checkSet[i];
Chris@441:     if ( elem ) {
Chris@441:       if ( sibDir && elem.nodeType === 1 ){
Chris@441:         elem.sizcache = doneName;
Chris@441:         elem.sizset = i;
Chris@441:       }
Chris@441:       elem = elem[dir];
Chris@441:       var match = false;
Chris@441: 
Chris@441:       while ( elem ) {
Chris@441:         if ( elem.sizcache === doneName ) {
Chris@441:           match = checkSet[elem.sizset];
Chris@441:           break;
Chris@0:         }
Chris@441: 
Chris@441:         if ( elem.nodeType === 1 && !isXML ){
Chris@441:           elem.sizcache = doneName;
Chris@441:           elem.sizset = i;
Chris@441:         }
Chris@441: 
Chris@441:         if ( elem.nodeName === cur ) {
Chris@441:           match = elem;
Chris@441:           break;
Chris@441:         }
Chris@441: 
Chris@441:         elem = elem[dir];
Chris@0:       }
Chris@441: 
Chris@441:       checkSet[i] = match;
Chris@441:     }
Chris@441:   }
Chris@441: }
Chris@441: 
Chris@441: function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
Chris@441:   var sibDir = dir == "previousSibling" && !isXML;
Chris@441:   for ( var i = 0, l = checkSet.length; i < l; i++ ) {
Chris@441:     var elem = checkSet[i];
Chris@441:     if ( elem ) {
Chris@441:       if ( sibDir && elem.nodeType === 1 ) {
Chris@441:         elem.sizcache = doneName;
Chris@441:         elem.sizset = i;
Chris@0:       }
Chris@441:       elem = elem[dir];
Chris@441:       var match = false;
Chris@441: 
Chris@441:       while ( elem ) {
Chris@441:         if ( elem.sizcache === doneName ) {
Chris@441:           match = checkSet[elem.sizset];
Chris@441:           break;
Chris@0:         }
Chris@441: 
Chris@441:         if ( elem.nodeType === 1 ) {
Chris@441:           if ( !isXML ) {
Chris@441:             elem.sizcache = doneName;
Chris@441:             elem.sizset = i;
Chris@441:           }
Chris@441:           if ( typeof cur !== "string" ) {
Chris@441:             if ( elem === cur ) {
Chris@441:               match = true;
Chris@441:               break;
Chris@441:             }
Chris@441: 
Chris@441:           } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
Chris@441:             match = elem;
Chris@441:             break;
Chris@441:           }
Chris@0:         }
Chris@441: 
Chris@441:         elem = elem[dir];
Chris@0:       }
Chris@441: 
Chris@441:       checkSet[i] = match;
Chris@0:     }
Chris@441:   }
Chris@0: }
Chris@0: 
Chris@441: var contains = document.compareDocumentPosition ?  function(a, b){
Chris@441:   return a.compareDocumentPosition(b) & 16;
Chris@441: } : function(a, b){
Chris@441:   return a !== b && (a.contains ? a.contains(b) : true);
Chris@441: };
Chris@441: 
Chris@441: var isXML = function(elem){
Chris@441:   return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
Chris@441:     !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
Chris@441: };
Chris@441: 
Chris@441: var posProcess = function(selector, context){
Chris@441:   var tmpSet = [], later = "", match,
Chris@441:     root = context.nodeType ? [context] : context;
Chris@441: 
Chris@441:   while ( (match = Expr.match.PSEUDO.exec( selector )) ) {
Chris@441:     later += match[0];
Chris@441:     selector = selector.replace( Expr.match.PSEUDO, "" );
Chris@441:   }
Chris@441: 
Chris@441:   selector = Expr.relative[selector] ? selector + "*" : selector;
Chris@441: 
Chris@441:   for ( var i = 0, l = root.length; i < l; i++ ) {
Chris@441:     Sizzle( selector, root[i], tmpSet );
Chris@441:   }
Chris@441: 
Chris@441:   return Sizzle.filter( later, tmpSet );
Chris@441: };
Chris@441: 
Chris@441: 
Chris@441: window.Sizzle = Sizzle;
Chris@441: 
Chris@441: })();
Chris@441: 
Chris@441: ;(function(engine) {
Chris@441:   var extendElements = Prototype.Selector.extendElements;
Chris@441: 
Chris@441:   function select(selector, scope) {
Chris@441:     return extendElements(engine(selector, scope || document));
Chris@441:   }
Chris@441: 
Chris@441:   function match(element, selector) {
Chris@441:     return engine.matches(selector, [element]).length == 1;
Chris@441:   }
Chris@441: 
Chris@441:   Prototype.Selector.engine = engine;
Chris@441:   Prototype.Selector.select = select;
Chris@441:   Prototype.Selector.match = match;
Chris@441: })(Sizzle);
Chris@441: 
Chris@441: window.Sizzle = Prototype._original_property;
Chris@441: delete Prototype._original_property;
Chris@441: 
Chris@0: var Form = {
Chris@0:   reset: function(form) {
Chris@441:     form = $(form);
Chris@441:     form.reset();
Chris@0:     return form;
Chris@0:   },
Chris@0: 
Chris@0:   serializeElements: function(elements, options) {
Chris@0:     if (typeof options != 'object') options = { hash: !!options };
Chris@0:     else if (Object.isUndefined(options.hash)) options.hash = true;
Chris@441:     var key, value, submitted = false, submit = options.submit, accumulator, initial;
Chris@441: 
Chris@441:     if (options.hash) {
Chris@441:       initial = {};
Chris@441:       accumulator = function(result, key, value) {
Chris@441:         if (key in result) {
Chris@441:           if (!Object.isArray(result[key])) result[key] = [result[key]];
Chris@441:           result[key].push(value);
Chris@441:         } else result[key] = value;
Chris@441:         return result;
Chris@441:       };
Chris@441:     } else {
Chris@441:       initial = '';
Chris@441:       accumulator = function(result, key, value) {
Chris@441:         return result + (result ? '&' : '') + encodeURIComponent(key) + '=' + encodeURIComponent(value);
Chris@441:       }
Chris@441:     }
Chris@441: 
Chris@441:     return elements.inject(initial, function(result, element) {
Chris@0:       if (!element.disabled && element.name) {
Chris@0:         key = element.name; value = $(element).getValue();
Chris@0:         if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
Chris@0:             submit !== false && (!submit || key == submit) && (submitted = true)))) {
Chris@441:           result = accumulator(result, key, value);
Chris@0:         }
Chris@0:       }
Chris@0:       return result;
Chris@0:     });
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: Form.Methods = {
Chris@0:   serialize: function(form, options) {
Chris@0:     return Form.serializeElements(Form.getElements(form), options);
Chris@0:   },
Chris@0: 
Chris@0:   getElements: function(form) {
Chris@441:     var elements = $(form).getElementsByTagName('*'),
Chris@441:         element,
Chris@441:         arr = [ ],
Chris@441:         serializers = Form.Element.Serializers;
Chris@441:     for (var i = 0; element = elements[i]; i++) {
Chris@441:       arr.push(element);
Chris@441:     }
Chris@441:     return arr.inject([], function(elements, child) {
Chris@441:       if (serializers[child.tagName.toLowerCase()])
Chris@441:         elements.push(Element.extend(child));
Chris@441:       return elements;
Chris@441:     })
Chris@0:   },
Chris@0: 
Chris@0:   getInputs: function(form, typeName, name) {
Chris@0:     form = $(form);
Chris@0:     var inputs = form.getElementsByTagName('input');
Chris@0: 
Chris@0:     if (!typeName && !name) return $A(inputs).map(Element.extend);
Chris@0: 
Chris@0:     for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
Chris@0:       var input = inputs[i];
Chris@0:       if ((typeName && input.type != typeName) || (name && input.name != name))
Chris@0:         continue;
Chris@0:       matchingInputs.push(Element.extend(input));
Chris@0:     }
Chris@0: 
Chris@0:     return matchingInputs;
Chris@0:   },
Chris@0: 
Chris@0:   disable: function(form) {
Chris@0:     form = $(form);
Chris@0:     Form.getElements(form).invoke('disable');
Chris@0:     return form;
Chris@0:   },
Chris@0: 
Chris@0:   enable: function(form) {
Chris@0:     form = $(form);
Chris@0:     Form.getElements(form).invoke('enable');
Chris@0:     return form;
Chris@0:   },
Chris@0: 
Chris@0:   findFirstElement: function(form) {
Chris@0:     var elements = $(form).getElements().findAll(function(element) {
Chris@0:       return 'hidden' != element.type && !element.disabled;
Chris@0:     });
Chris@0:     var firstByIndex = elements.findAll(function(element) {
Chris@0:       return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
Chris@0:     }).sortBy(function(element) { return element.tabIndex }).first();
Chris@0: 
Chris@0:     return firstByIndex ? firstByIndex : elements.find(function(element) {
Chris@441:       return /^(?:input|select|textarea)$/i.test(element.tagName);
Chris@0:     });
Chris@0:   },
Chris@0: 
Chris@0:   focusFirstElement: function(form) {
Chris@0:     form = $(form);
Chris@441:     var element = form.findFirstElement();
Chris@441:     if (element) element.activate();
Chris@0:     return form;
Chris@0:   },
Chris@0: 
Chris@0:   request: function(form, options) {
Chris@0:     form = $(form), options = Object.clone(options || { });
Chris@0: 
Chris@0:     var params = options.parameters, action = form.readAttribute('action') || '';
Chris@0:     if (action.blank()) action = window.location.href;
Chris@0:     options.parameters = form.serialize(true);
Chris@0: 
Chris@0:     if (params) {
Chris@0:       if (Object.isString(params)) params = params.toQueryParams();
Chris@0:       Object.extend(options.parameters, params);
Chris@0:     }
Chris@0: 
Chris@0:     if (form.hasAttribute('method') && !options.method)
Chris@0:       options.method = form.method;
Chris@0: 
Chris@0:     return new Ajax.Request(action, options);
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@441: 
Chris@0: Form.Element = {
Chris@0:   focus: function(element) {
Chris@0:     $(element).focus();
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   select: function(element) {
Chris@0:     $(element).select();
Chris@0:     return element;
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: Form.Element.Methods = {
Chris@441: 
Chris@0:   serialize: function(element) {
Chris@0:     element = $(element);
Chris@0:     if (!element.disabled && element.name) {
Chris@0:       var value = element.getValue();
Chris@0:       if (value != undefined) {
Chris@0:         var pair = { };
Chris@0:         pair[element.name] = value;
Chris@0:         return Object.toQueryString(pair);
Chris@0:       }
Chris@0:     }
Chris@0:     return '';
Chris@0:   },
Chris@0: 
Chris@0:   getValue: function(element) {
Chris@0:     element = $(element);
Chris@0:     var method = element.tagName.toLowerCase();
Chris@0:     return Form.Element.Serializers[method](element);
Chris@0:   },
Chris@0: 
Chris@0:   setValue: function(element, value) {
Chris@0:     element = $(element);
Chris@0:     var method = element.tagName.toLowerCase();
Chris@0:     Form.Element.Serializers[method](element, value);
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   clear: function(element) {
Chris@0:     $(element).value = '';
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   present: function(element) {
Chris@0:     return $(element).value != '';
Chris@0:   },
Chris@0: 
Chris@0:   activate: function(element) {
Chris@0:     element = $(element);
Chris@0:     try {
Chris@0:       element.focus();
Chris@0:       if (element.select && (element.tagName.toLowerCase() != 'input' ||
Chris@441:           !(/^(?:button|reset|submit)$/i.test(element.type))))
Chris@0:         element.select();
Chris@0:     } catch (e) { }
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   disable: function(element) {
Chris@0:     element = $(element);
Chris@0:     element.disabled = true;
Chris@0:     return element;
Chris@0:   },
Chris@0: 
Chris@0:   enable: function(element) {
Chris@0:     element = $(element);
Chris@0:     element.disabled = false;
Chris@0:     return element;
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@0: var Field = Form.Element;
Chris@441: 
Chris@0: var $F = Form.Element.Methods.getValue;
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@441: Form.Element.Serializers = (function() {
Chris@441:   function input(element, value) {
Chris@0:     switch (element.type.toLowerCase()) {
Chris@0:       case 'checkbox':
Chris@0:       case 'radio':
Chris@441:         return inputSelector(element, value);
Chris@0:       default:
Chris@441:         return valueSelector(element, value);
Chris@0:     }
Chris@441:   }
Chris@441: 
Chris@441:   function inputSelector(element, value) {
Chris@441:     if (Object.isUndefined(value))
Chris@441:       return element.checked ? element.value : null;
Chris@0:     else element.checked = !!value;
Chris@441:   }
Chris@441: 
Chris@441:   function valueSelector(element, value) {
Chris@0:     if (Object.isUndefined(value)) return element.value;
Chris@0:     else element.value = value;
Chris@441:   }
Chris@441: 
Chris@441:   function select(element, value) {
Chris@0:     if (Object.isUndefined(value))
Chris@441:       return (element.type === 'select-one' ? selectOne : selectMany)(element);
Chris@441: 
Chris@441:     var opt, currentValue, single = !Object.isArray(value);
Chris@441:     for (var i = 0, length = element.length; i < length; i++) {
Chris@441:       opt = element.options[i];
Chris@441:       currentValue = this.optionValue(opt);
Chris@441:       if (single) {
Chris@441:         if (currentValue == value) {
Chris@441:           opt.selected = true;
Chris@441:           return;
Chris@0:         }
Chris@0:       }
Chris@441:       else opt.selected = value.include(currentValue);
Chris@0:     }
Chris@441:   }
Chris@441: 
Chris@441:   function selectOne(element) {
Chris@0:     var index = element.selectedIndex;
Chris@441:     return index >= 0 ? optionValue(element.options[index]) : null;
Chris@441:   }
Chris@441: 
Chris@441:   function selectMany(element) {
Chris@0:     var values, length = element.length;
Chris@0:     if (!length) return null;
Chris@0: 
Chris@0:     for (var i = 0, values = []; i < length; i++) {
Chris@0:       var opt = element.options[i];
Chris@441:       if (opt.selected) values.push(optionValue(opt));
Chris@0:     }
Chris@0:     return values;
Chris@441:   }
Chris@441: 
Chris@441:   function optionValue(opt) {
Chris@441:     return Element.hasAttribute(opt, 'value') ? opt.value : opt.text;
Chris@441:   }
Chris@441: 
Chris@441:   return {
Chris@441:     input:         input,
Chris@441:     inputSelector: inputSelector,
Chris@441:     textarea:      valueSelector,
Chris@441:     select:        select,
Chris@441:     selectOne:     selectOne,
Chris@441:     selectMany:    selectMany,
Chris@441:     optionValue:   optionValue,
Chris@441:     button:        valueSelector
Chris@441:   };
Chris@441: })();
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@441: 
Chris@0: Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
Chris@0:   initialize: function($super, element, frequency, callback) {
Chris@0:     $super(callback, frequency);
Chris@0:     this.element   = $(element);
Chris@0:     this.lastValue = this.getValue();
Chris@0:   },
Chris@0: 
Chris@0:   execute: function() {
Chris@0:     var value = this.getValue();
Chris@0:     if (Object.isString(this.lastValue) && Object.isString(value) ?
Chris@0:         this.lastValue != value : String(this.lastValue) != String(value)) {
Chris@0:       this.callback(this.element, value);
Chris@0:       this.lastValue = value;
Chris@0:     }
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Form.Element.Observer = Class.create(Abstract.TimedObserver, {
Chris@0:   getValue: function() {
Chris@0:     return Form.Element.getValue(this.element);
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Form.Observer = Class.create(Abstract.TimedObserver, {
Chris@0:   getValue: function() {
Chris@0:     return Form.serialize(this.element);
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@0: Abstract.EventObserver = Class.create({
Chris@0:   initialize: function(element, callback) {
Chris@0:     this.element  = $(element);
Chris@0:     this.callback = callback;
Chris@0: 
Chris@0:     this.lastValue = this.getValue();
Chris@0:     if (this.element.tagName.toLowerCase() == 'form')
Chris@0:       this.registerFormCallbacks();
Chris@0:     else
Chris@0:       this.registerCallback(this.element);
Chris@0:   },
Chris@0: 
Chris@0:   onElementEvent: function() {
Chris@0:     var value = this.getValue();
Chris@0:     if (this.lastValue != value) {
Chris@0:       this.callback(this.element, value);
Chris@0:       this.lastValue = value;
Chris@0:     }
Chris@0:   },
Chris@0: 
Chris@0:   registerFormCallbacks: function() {
Chris@0:     Form.getElements(this.element).each(this.registerCallback, this);
Chris@0:   },
Chris@0: 
Chris@0:   registerCallback: function(element) {
Chris@0:     if (element.type) {
Chris@0:       switch (element.type.toLowerCase()) {
Chris@0:         case 'checkbox':
Chris@0:         case 'radio':
Chris@0:           Event.observe(element, 'click', this.onElementEvent.bind(this));
Chris@0:           break;
Chris@0:         default:
Chris@0:           Event.observe(element, 'change', this.onElementEvent.bind(this));
Chris@0:           break;
Chris@0:       }
Chris@0:     }
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
Chris@0:   getValue: function() {
Chris@0:     return Form.Element.getValue(this.element);
Chris@0:   }
Chris@0: });
Chris@0: 
Chris@0: Form.EventObserver = Class.create(Abstract.EventObserver, {
Chris@0:   getValue: function() {
Chris@0:     return Form.serialize(this.element);
Chris@0:   }
Chris@0: });
Chris@441: (function() {
Chris@441: 
Chris@441:   var Event = {
Chris@441:     KEY_BACKSPACE: 8,
Chris@441:     KEY_TAB:       9,
Chris@441:     KEY_RETURN:   13,
Chris@441:     KEY_ESC:      27,
Chris@441:     KEY_LEFT:     37,
Chris@441:     KEY_UP:       38,
Chris@441:     KEY_RIGHT:    39,
Chris@441:     KEY_DOWN:     40,
Chris@441:     KEY_DELETE:   46,
Chris@441:     KEY_HOME:     36,
Chris@441:     KEY_END:      35,
Chris@441:     KEY_PAGEUP:   33,
Chris@441:     KEY_PAGEDOWN: 34,
Chris@441:     KEY_INSERT:   45,
Chris@441: 
Chris@441:     cache: {}
Chris@441:   };
Chris@441: 
Chris@441:   var docEl = document.documentElement;
Chris@441:   var MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED = 'onmouseenter' in docEl
Chris@441:     && 'onmouseleave' in docEl;
Chris@441: 
Chris@441: 
Chris@441: 
Chris@441:   var isIELegacyEvent = function(event) { return false; };
Chris@441: 
Chris@441:   if (window.attachEvent) {
Chris@441:     if (window.addEventListener) {
Chris@441:       isIELegacyEvent = function(event) {
Chris@441:         return !(event instanceof window.Event);
Chris@441:       };
Chris@441:     } else {
Chris@441:       isIELegacyEvent = function(event) { return true; };
Chris@0:     }
Chris@441:   }
Chris@441: 
Chris@441:   var _isButton;
Chris@441: 
Chris@441:   function _isButtonForDOMEvents(event, code) {
Chris@441:     return event.which ? (event.which === code + 1) : (event.button === code);
Chris@441:   }
Chris@441: 
Chris@441:   var legacyButtonMap = { 0: 1, 1: 4, 2: 2 };
Chris@441:   function _isButtonForLegacyEvents(event, code) {
Chris@441:     return event.button === legacyButtonMap[code];
Chris@441:   }
Chris@441: 
Chris@441:   function _isButtonForWebKit(event, code) {
Chris@441:     switch (code) {
Chris@441:       case 0: return event.which == 1 && !event.metaKey;
Chris@441:       case 1: return event.which == 2 || (event.which == 1 && event.metaKey);
Chris@441:       case 2: return event.which == 3;
Chris@441:       default: return false;
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   if (window.attachEvent) {
Chris@441:     if (!window.addEventListener) {
Chris@441:       _isButton = _isButtonForLegacyEvents;
Chris@441:     } else {
Chris@441:       _isButton = function(event, code) {
Chris@441:         return isIELegacyEvent(event) ? _isButtonForLegacyEvents(event, code) :
Chris@441:          _isButtonForDOMEvents(event, code);
Chris@441:       }
Chris@441:     }
Chris@0:   } else if (Prototype.Browser.WebKit) {
Chris@441:     _isButton = _isButtonForWebKit;
Chris@441:   } else {
Chris@441:     _isButton = _isButtonForDOMEvents;
Chris@441:   }
Chris@441: 
Chris@441:   function isLeftClick(event)   { return _isButton(event, 0) }
Chris@441: 
Chris@441:   function isMiddleClick(event) { return _isButton(event, 1) }
Chris@441: 
Chris@441:   function isRightClick(event)  { return _isButton(event, 2) }
Chris@441: 
Chris@441:   function element(event) {
Chris@441:     event = Event.extend(event);
Chris@441: 
Chris@441:     var node = event.target, type = event.type,
Chris@441:      currentTarget = event.currentTarget;
Chris@441: 
Chris@441:     if (currentTarget && currentTarget.tagName) {
Chris@441:       if (type === 'load' || type === 'error' ||
Chris@441:         (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
Chris@441:           && currentTarget.type === 'radio'))
Chris@441:             node = currentTarget;
Chris@441:     }
Chris@441: 
Chris@441:     if (node.nodeType == Node.TEXT_NODE)
Chris@441:       node = node.parentNode;
Chris@441: 
Chris@441:     return Element.extend(node);
Chris@441:   }
Chris@441: 
Chris@441:   function findElement(event, expression) {
Chris@441:     var element = Event.element(event);
Chris@441: 
Chris@441:     if (!expression) return element;
Chris@441:     while (element) {
Chris@441:       if (Object.isElement(element) && Prototype.Selector.match(element, expression)) {
Chris@441:         return Element.extend(element);
Chris@0:       }
Chris@441:       element = element.parentNode;
Chris@0:     }
Chris@441:   }
Chris@441: 
Chris@441:   function pointer(event) {
Chris@441:     return { x: pointerX(event), y: pointerY(event) };
Chris@441:   }
Chris@441: 
Chris@441:   function pointerX(event) {
Chris@441:     var docElement = document.documentElement,
Chris@441:      body = document.body || { scrollLeft: 0 };
Chris@441: 
Chris@441:     return event.pageX || (event.clientX +
Chris@441:       (docElement.scrollLeft || body.scrollLeft) -
Chris@441:       (docElement.clientLeft || 0));
Chris@441:   }
Chris@441: 
Chris@441:   function pointerY(event) {
Chris@441:     var docElement = document.documentElement,
Chris@441:      body = document.body || { scrollTop: 0 };
Chris@441: 
Chris@441:     return  event.pageY || (event.clientY +
Chris@441:        (docElement.scrollTop || body.scrollTop) -
Chris@441:        (docElement.clientTop || 0));
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441:   function stop(event) {
Chris@441:     Event.extend(event);
Chris@441:     event.preventDefault();
Chris@441:     event.stopPropagation();
Chris@441: 
Chris@441:     event.stopped = true;
Chris@441:   }
Chris@441: 
Chris@441: 
Chris@441:   Event.Methods = {
Chris@441:     isLeftClick:   isLeftClick,
Chris@441:     isMiddleClick: isMiddleClick,
Chris@441:     isRightClick:  isRightClick,
Chris@441: 
Chris@441:     element:     element,
Chris@441:     findElement: findElement,
Chris@441: 
Chris@441:     pointer:  pointer,
Chris@441:     pointerX: pointerX,
Chris@441:     pointerY: pointerY,
Chris@441: 
Chris@441:     stop: stop
Chris@0:   };
Chris@441: 
Chris@0:   var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
Chris@0:     m[name] = Event.Methods[name].methodize();
Chris@0:     return m;
Chris@0:   });
Chris@0: 
Chris@441:   if (window.attachEvent) {
Chris@441:     function _relatedTarget(event) {
Chris@441:       var element;
Chris@441:       switch (event.type) {
Chris@441:         case 'mouseover':
Chris@441:         case 'mouseenter':
Chris@441:           element = event.fromElement;
Chris@441:           break;
Chris@441:         case 'mouseout':
Chris@441:         case 'mouseleave':
Chris@441:           element = event.toElement;
Chris@441:           break;
Chris@441:         default:
Chris@441:           return null;
Chris@441:       }
Chris@441:       return Element.extend(element);
Chris@441:     }
Chris@441: 
Chris@441:     var additionalMethods = {
Chris@0:       stopPropagation: function() { this.cancelBubble = true },
Chris@0:       preventDefault:  function() { this.returnValue = false },
Chris@441:       inspect: function() { return '[object Event]' }
Chris@441:     };
Chris@441: 
Chris@441:     Event.extend = function(event, element) {
Chris@0:       if (!event) return false;
Chris@441: 
Chris@441:       if (!isIELegacyEvent(event)) return event;
Chris@441: 
Chris@0:       if (event._extendedByPrototype) return event;
Chris@0:       event._extendedByPrototype = Prototype.emptyFunction;
Chris@441: 
Chris@0:       var pointer = Event.pointer(event);
Chris@441: 
Chris@0:       Object.extend(event, {
Chris@441:         target: event.srcElement || element,
Chris@441:         relatedTarget: _relatedTarget(event),
Chris@0:         pageX:  pointer.x,
Chris@0:         pageY:  pointer.y
Chris@0:       });
Chris@441: 
Chris@441:       Object.extend(event, methods);
Chris@441:       Object.extend(event, additionalMethods);
Chris@441: 
Chris@441:       return event;
Chris@0:     };
Chris@0:   } else {
Chris@441:     Event.extend = Prototype.K;
Chris@441:   }
Chris@441: 
Chris@441:   if (window.addEventListener) {
Chris@441:     Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__;
Chris@0:     Object.extend(Event.prototype, methods);
Chris@441:   }
Chris@441: 
Chris@441:   function _createResponder(element, eventName, handler) {
Chris@441:     var registry = Element.retrieve(element, 'prototype_event_registry');
Chris@441: 
Chris@441:     if (Object.isUndefined(registry)) {
Chris@441:       CACHE.push(element);
Chris@441:       registry = Element.retrieve(element, 'prototype_event_registry', $H());
Chris@441:     }
Chris@441: 
Chris@441:     var respondersForEvent = registry.get(eventName);
Chris@441:     if (Object.isUndefined(respondersForEvent)) {
Chris@441:       respondersForEvent = [];
Chris@441:       registry.set(eventName, respondersForEvent);
Chris@441:     }
Chris@441: 
Chris@441:     if (respondersForEvent.pluck('handler').include(handler)) return false;
Chris@441: 
Chris@441:     var responder;
Chris@441:     if (eventName.include(":")) {
Chris@441:       responder = function(event) {
Chris@441:         if (Object.isUndefined(event.eventName))
Chris@441:           return false;
Chris@441: 
Chris@441:         if (event.eventName !== eventName)
Chris@441:           return false;
Chris@441: 
Chris@441:         Event.extend(event, element);
Chris@441:         handler.call(element, event);
Chris@441:       };
Chris@441:     } else {
Chris@441:       if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED &&
Chris@441:        (eventName === "mouseenter" || eventName === "mouseleave")) {
Chris@441:         if (eventName === "mouseenter" || eventName === "mouseleave") {
Chris@441:           responder = function(event) {
Chris@441:             Event.extend(event, element);
Chris@441: 
Chris@441:             var parent = event.relatedTarget;
Chris@441:             while (parent && parent !== element) {
Chris@441:               try { parent = parent.parentNode; }
Chris@441:               catch(e) { parent = element; }
Chris@441:             }
Chris@441: 
Chris@441:             if (parent === element) return;
Chris@441: 
Chris@441:             handler.call(element, event);
Chris@441:           };
Chris@441:         }
Chris@441:       } else {
Chris@441:         responder = function(event) {
Chris@441:           Event.extend(event, element);
Chris@441:           handler.call(element, event);
Chris@441:         };
Chris@441:       }
Chris@441:     }
Chris@441: 
Chris@441:     responder.handler = handler;
Chris@441:     respondersForEvent.push(responder);
Chris@441:     return responder;
Chris@441:   }
Chris@441: 
Chris@441:   function _destroyCache() {
Chris@441:     for (var i = 0, length = CACHE.length; i < length; i++) {
Chris@441:       Event.stopObserving(CACHE[i]);
Chris@441:       CACHE[i] = null;
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   var CACHE = [];
Chris@441: 
Chris@441:   if (Prototype.Browser.IE)
Chris@441:     window.attachEvent('onunload', _destroyCache);
Chris@441: 
Chris@441:   if (Prototype.Browser.WebKit)
Chris@441:     window.addEventListener('unload', Prototype.emptyFunction, false);
Chris@441: 
Chris@441: 
Chris@441:   var _getDOMEventName = Prototype.K,
Chris@441:       translations = { mouseenter: "mouseover", mouseleave: "mouseout" };
Chris@441: 
Chris@441:   if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) {
Chris@441:     _getDOMEventName = function(eventName) {
Chris@441:       return (translations[eventName] || eventName);
Chris@441:     };
Chris@441:   }
Chris@441: 
Chris@441:   function observe(element, eventName, handler) {
Chris@441:     element = $(element);
Chris@441: 
Chris@441:     var responder = _createResponder(element, eventName, handler);
Chris@441: 
Chris@441:     if (!responder) return element;
Chris@441: 
Chris@441:     if (eventName.include(':')) {
Chris@441:       if (element.addEventListener)
Chris@441:         element.addEventListener("dataavailable", responder, false);
Chris@441:       else {
Chris@441:         element.attachEvent("ondataavailable", responder);
Chris@441:         element.attachEvent("onlosecapture", responder);
Chris@441:       }
Chris@441:     } else {
Chris@441:       var actualEventName = _getDOMEventName(eventName);
Chris@441: 
Chris@441:       if (element.addEventListener)
Chris@441:         element.addEventListener(actualEventName, responder, false);
Chris@441:       else
Chris@441:         element.attachEvent("on" + actualEventName, responder);
Chris@441:     }
Chris@441: 
Chris@441:     return element;
Chris@441:   }
Chris@441: 
Chris@441:   function stopObserving(element, eventName, handler) {
Chris@441:     element = $(element);
Chris@441: 
Chris@441:     var registry = Element.retrieve(element, 'prototype_event_registry');
Chris@441:     if (!registry) return element;
Chris@441: 
Chris@441:     if (!eventName) {
Chris@441:       registry.each( function(pair) {
Chris@441:         var eventName = pair.key;
Chris@441:         stopObserving(element, eventName);
Chris@441:       });
Chris@441:       return element;
Chris@441:     }
Chris@441: 
Chris@441:     var responders = registry.get(eventName);
Chris@441:     if (!responders) return element;
Chris@441: 
Chris@441:     if (!handler) {
Chris@441:       responders.each(function(r) {
Chris@441:         stopObserving(element, eventName, r.handler);
Chris@441:       });
Chris@441:       return element;
Chris@441:     }
Chris@441: 
Chris@441:     var i = responders.length, responder;
Chris@441:     while (i--) {
Chris@441:       if (responders[i].handler === handler) {
Chris@441:         responder = responders[i];
Chris@441:         break;
Chris@441:       }
Chris@441:     }
Chris@441:     if (!responder) return element;
Chris@441: 
Chris@441:     if (eventName.include(':')) {
Chris@441:       if (element.removeEventListener)
Chris@441:         element.removeEventListener("dataavailable", responder, false);
Chris@441:       else {
Chris@441:         element.detachEvent("ondataavailable", responder);
Chris@441:         element.detachEvent("onlosecapture", responder);
Chris@441:       }
Chris@441:     } else {
Chris@441:       var actualEventName = _getDOMEventName(eventName);
Chris@441:       if (element.removeEventListener)
Chris@441:         element.removeEventListener(actualEventName, responder, false);
Chris@441:       else
Chris@441:         element.detachEvent('on' + actualEventName, responder);
Chris@441:     }
Chris@441: 
Chris@441:     registry.set(eventName, responders.without(responder));
Chris@441: 
Chris@441:     return element;
Chris@441:   }
Chris@441: 
Chris@441:   function fire(element, eventName, memo, bubble) {
Chris@441:     element = $(element);
Chris@441: 
Chris@441:     if (Object.isUndefined(bubble))
Chris@441:       bubble = true;
Chris@441: 
Chris@441:     if (element == document && document.createEvent && !element.dispatchEvent)
Chris@441:       element = document.documentElement;
Chris@441: 
Chris@441:     var event;
Chris@441:     if (document.createEvent) {
Chris@441:       event = document.createEvent('HTMLEvents');
Chris@441:       event.initEvent('dataavailable', bubble, true);
Chris@441:     } else {
Chris@441:       event = document.createEventObject();
Chris@441:       event.eventType = bubble ? 'ondataavailable' : 'onlosecapture';
Chris@441:     }
Chris@441: 
Chris@441:     event.eventName = eventName;
Chris@441:     event.memo = memo || { };
Chris@441: 
Chris@441:     if (document.createEvent)
Chris@441:       element.dispatchEvent(event);
Chris@441:     else
Chris@441:       element.fireEvent(event.eventType, event);
Chris@441: 
Chris@441:     return Event.extend(event);
Chris@441:   }
Chris@441: 
Chris@441:   Event.Handler = Class.create({
Chris@441:     initialize: function(element, eventName, selector, callback) {
Chris@441:       this.element   = $(element);
Chris@441:       this.eventName = eventName;
Chris@441:       this.selector  = selector;
Chris@441:       this.callback  = callback;
Chris@441:       this.handler   = this.handleEvent.bind(this);
Chris@441:     },
Chris@441: 
Chris@441:     start: function() {
Chris@441:       Event.observe(this.element, this.eventName, this.handler);
Chris@441:       return this;
Chris@441:     },
Chris@441: 
Chris@441:     stop: function() {
Chris@441:       Event.stopObserving(this.element, this.eventName, this.handler);
Chris@441:       return this;
Chris@441:     },
Chris@441: 
Chris@441:     handleEvent: function(event) {
Chris@441:       var element = Event.findElement(event, this.selector);
Chris@441:       if (element) this.callback.call(this.element, event, element);
Chris@441:     }
Chris@441:   });
Chris@441: 
Chris@441:   function on(element, eventName, selector, callback) {
Chris@441:     element = $(element);
Chris@441:     if (Object.isFunction(selector) && Object.isUndefined(callback)) {
Chris@441:       callback = selector, selector = null;
Chris@441:     }
Chris@441: 
Chris@441:     return new Event.Handler(element, eventName, selector, callback).start();
Chris@441:   }
Chris@441: 
Chris@441:   Object.extend(Event, Event.Methods);
Chris@441: 
Chris@441:   Object.extend(Event, {
Chris@441:     fire:          fire,
Chris@441:     observe:       observe,
Chris@441:     stopObserving: stopObserving,
Chris@441:     on:            on
Chris@441:   });
Chris@441: 
Chris@441:   Element.addMethods({
Chris@441:     fire:          fire,
Chris@441: 
Chris@441:     observe:       observe,
Chris@441: 
Chris@441:     stopObserving: stopObserving,
Chris@441: 
Chris@441:     on:            on
Chris@441:   });
Chris@441: 
Chris@441:   Object.extend(document, {
Chris@441:     fire:          fire.methodize(),
Chris@441: 
Chris@441:     observe:       observe.methodize(),
Chris@441: 
Chris@441:     stopObserving: stopObserving.methodize(),
Chris@441: 
Chris@441:     on:            on.methodize(),
Chris@441: 
Chris@441:     loaded:        false
Chris@441:   });
Chris@441: 
Chris@441:   if (window.Event) Object.extend(window.Event, Event);
Chris@441:   else window.Event = Event;
Chris@0: })();
Chris@0: 
Chris@0: (function() {
Chris@0:   /* Support for the DOMContentLoaded event is based on work by Dan Webb,
Chris@441:      Matthias Miller, Dean Edwards, John Resig, and Diego Perini. */
Chris@0: 
Chris@0:   var timer;
Chris@0: 
Chris@0:   function fireContentLoadedEvent() {
Chris@0:     if (document.loaded) return;
Chris@441:     if (timer) window.clearTimeout(timer);
Chris@0:     document.loaded = true;
Chris@441:     document.fire('dom:loaded');
Chris@441:   }
Chris@441: 
Chris@441:   function checkReadyState() {
Chris@441:     if (document.readyState === 'complete') {
Chris@441:       document.stopObserving('readystatechange', checkReadyState);
Chris@441:       fireContentLoadedEvent();
Chris@441:     }
Chris@441:   }
Chris@441: 
Chris@441:   function pollDoScroll() {
Chris@441:     try { document.documentElement.doScroll('left'); }
Chris@441:     catch(e) {
Chris@441:       timer = pollDoScroll.defer();
Chris@441:       return;
Chris@441:     }
Chris@441:     fireContentLoadedEvent();
Chris@0:   }
Chris@0: 
Chris@0:   if (document.addEventListener) {
Chris@441:     document.addEventListener('DOMContentLoaded', fireContentLoadedEvent, false);
Chris@0:   } else {
Chris@441:     document.observe('readystatechange', checkReadyState);
Chris@441:     if (window == top)
Chris@441:       timer = pollDoScroll.defer();
Chris@441:   }
Chris@441: 
Chris@441:   Event.observe(window, 'load', fireContentLoadedEvent);
Chris@0: })();
Chris@441: 
Chris@441: Element.addMethods();
Chris@441: 
Chris@0: /*------------------------------- DEPRECATED -------------------------------*/
Chris@0: 
Chris@0: Hash.toQueryString = Object.toQueryString;
Chris@0: 
Chris@0: var Toggle = { display: Element.toggle };
Chris@0: 
Chris@0: Element.Methods.childOf = Element.Methods.descendantOf;
Chris@0: 
Chris@0: var Insertion = {
Chris@0:   Before: function(element, content) {
Chris@0:     return Element.insert(element, {before:content});
Chris@0:   },
Chris@0: 
Chris@0:   Top: function(element, content) {
Chris@0:     return Element.insert(element, {top:content});
Chris@0:   },
Chris@0: 
Chris@0:   Bottom: function(element, content) {
Chris@0:     return Element.insert(element, {bottom:content});
Chris@0:   },
Chris@0: 
Chris@0:   After: function(element, content) {
Chris@0:     return Element.insert(element, {after:content});
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: var $continue = new Error('"throw $continue" is deprecated, use "return" instead');
Chris@0: 
Chris@0: var Position = {
Chris@0:   includeScrollOffsets: false,
Chris@0: 
Chris@0:   prepare: function() {
Chris@0:     this.deltaX =  window.pageXOffset
Chris@0:                 || document.documentElement.scrollLeft
Chris@0:                 || document.body.scrollLeft
Chris@0:                 || 0;
Chris@0:     this.deltaY =  window.pageYOffset
Chris@0:                 || document.documentElement.scrollTop
Chris@0:                 || document.body.scrollTop
Chris@0:                 || 0;
Chris@0:   },
Chris@0: 
Chris@0:   within: function(element, x, y) {
Chris@0:     if (this.includeScrollOffsets)
Chris@0:       return this.withinIncludingScrolloffsets(element, x, y);
Chris@0:     this.xcomp = x;
Chris@0:     this.ycomp = y;
Chris@0:     this.offset = Element.cumulativeOffset(element);
Chris@0: 
Chris@0:     return (y >= this.offset[1] &&
Chris@0:             y <  this.offset[1] + element.offsetHeight &&
Chris@0:             x >= this.offset[0] &&
Chris@0:             x <  this.offset[0] + element.offsetWidth);
Chris@0:   },
Chris@0: 
Chris@0:   withinIncludingScrolloffsets: function(element, x, y) {
Chris@0:     var offsetcache = Element.cumulativeScrollOffset(element);
Chris@0: 
Chris@0:     this.xcomp = x + offsetcache[0] - this.deltaX;
Chris@0:     this.ycomp = y + offsetcache[1] - this.deltaY;
Chris@0:     this.offset = Element.cumulativeOffset(element);
Chris@0: 
Chris@0:     return (this.ycomp >= this.offset[1] &&
Chris@0:             this.ycomp <  this.offset[1] + element.offsetHeight &&
Chris@0:             this.xcomp >= this.offset[0] &&
Chris@0:             this.xcomp <  this.offset[0] + element.offsetWidth);
Chris@0:   },
Chris@0: 
Chris@0:   overlap: function(mode, element) {
Chris@0:     if (!mode) return 0;
Chris@0:     if (mode == 'vertical')
Chris@0:       return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
Chris@0:         element.offsetHeight;
Chris@0:     if (mode == 'horizontal')
Chris@0:       return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
Chris@0:         element.offsetWidth;
Chris@0:   },
Chris@0: 
Chris@0: 
Chris@0:   cumulativeOffset: Element.Methods.cumulativeOffset,
Chris@0: 
Chris@0:   positionedOffset: Element.Methods.positionedOffset,
Chris@0: 
Chris@0:   absolutize: function(element) {
Chris@0:     Position.prepare();
Chris@0:     return Element.absolutize(element);
Chris@0:   },
Chris@0: 
Chris@0:   relativize: function(element) {
Chris@0:     Position.prepare();
Chris@0:     return Element.relativize(element);
Chris@0:   },
Chris@0: 
Chris@0:   realOffset: Element.Methods.cumulativeScrollOffset,
Chris@0: 
Chris@0:   offsetParent: Element.Methods.getOffsetParent,
Chris@0: 
Chris@0:   page: Element.Methods.viewportOffset,
Chris@0: 
Chris@0:   clone: function(source, target, options) {
Chris@0:     options = options || { };
Chris@0:     return Element.clonePosition(target, source, options);
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@0: if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
Chris@0:   function iter(name) {
Chris@0:     return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
Chris@0:   }
Chris@0: 
Chris@0:   instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
Chris@0:   function(element, className) {
Chris@0:     className = className.toString().strip();
Chris@0:     var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
Chris@0:     return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
Chris@0:   } : function(element, className) {
Chris@0:     className = className.toString().strip();
Chris@0:     var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
Chris@0:     if (!classNames && !className) return elements;
Chris@0: 
Chris@0:     var nodes = $(element).getElementsByTagName('*');
Chris@0:     className = ' ' + className + ' ';
Chris@0: 
Chris@0:     for (var i = 0, child, cn; child = nodes[i]; i++) {
Chris@0:       if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
Chris@0:           (classNames && classNames.all(function(name) {
Chris@0:             return !name.toString().blank() && cn.include(' ' + name + ' ');
Chris@0:           }))))
Chris@0:         elements.push(Element.extend(child));
Chris@0:     }
Chris@0:     return elements;
Chris@0:   };
Chris@0: 
Chris@0:   return function(className, parentElement) {
Chris@0:     return $(parentElement || document.body).getElementsByClassName(className);
Chris@0:   };
Chris@0: }(Element.Methods);
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@0: Element.ClassNames = Class.create();
Chris@0: Element.ClassNames.prototype = {
Chris@0:   initialize: function(element) {
Chris@0:     this.element = $(element);
Chris@0:   },
Chris@0: 
Chris@0:   _each: function(iterator) {
Chris@0:     this.element.className.split(/\s+/).select(function(name) {
Chris@0:       return name.length > 0;
Chris@0:     })._each(iterator);
Chris@0:   },
Chris@0: 
Chris@0:   set: function(className) {
Chris@0:     this.element.className = className;
Chris@0:   },
Chris@0: 
Chris@0:   add: function(classNameToAdd) {
Chris@0:     if (this.include(classNameToAdd)) return;
Chris@0:     this.set($A(this).concat(classNameToAdd).join(' '));
Chris@0:   },
Chris@0: 
Chris@0:   remove: function(classNameToRemove) {
Chris@0:     if (!this.include(classNameToRemove)) return;
Chris@0:     this.set($A(this).without(classNameToRemove).join(' '));
Chris@0:   },
Chris@0: 
Chris@0:   toString: function() {
Chris@0:     return $A(this).join(' ');
Chris@0:   }
Chris@0: };
Chris@0: 
Chris@0: Object.extend(Element.ClassNames.prototype, Enumerable);
Chris@0: 
Chris@0: /*--------------------------------------------------------------------------*/
Chris@0: 
Chris@441: (function() {
Chris@441:   window.Selector = Class.create({
Chris@441:     initialize: function(expression) {
Chris@441:       this.expression = expression.strip();
Chris@441:     },
Chris@441: 
Chris@441:     findElements: function(rootElement) {
Chris@441:       return Prototype.Selector.select(this.expression, rootElement);
Chris@441:     },
Chris@441: 
Chris@441:     match: function(element) {
Chris@441:       return Prototype.Selector.match(element, this.expression);
Chris@441:     },
Chris@441: 
Chris@441:     toString: function() {
Chris@441:       return this.expression;
Chris@441:     },
Chris@441: 
Chris@441:     inspect: function() {
Chris@441:       return "#<Selector: " + this.expression + ">";
Chris@441:     }
Chris@441:   });
Chris@441: 
Chris@441:   Object.extend(Selector, {
Chris@441:     matchElements: function(elements, expression) {
Chris@441:       var match = Prototype.Selector.match,
Chris@441:           results = [];
Chris@441: 
Chris@441:       for (var i = 0, length = elements.length; i < length; i++) {
Chris@441:         var element = elements[i];
Chris@441:         if (match(element, expression)) {
Chris@441:           results.push(Element.extend(element));
Chris@441:         }
Chris@441:       }
Chris@441:       return results;
Chris@441:     },
Chris@441: 
Chris@441:     findElement: function(elements, expression, index) {
Chris@441:       index = index || 0;
Chris@441:       var matchIndex = 0, element;
Chris@441:       for (var i = 0, length = elements.length; i < length; i++) {
Chris@441:         element = elements[i];
Chris@441:         if (Prototype.Selector.match(element, expression) && index === matchIndex++) {
Chris@441:           return Element.extend(element);
Chris@441:         }
Chris@441:       }
Chris@441:     },
Chris@441: 
Chris@441:     findChildElements: function(element, expressions) {
Chris@441:       var selector = expressions.toArray().join(', ');
Chris@441:       return Prototype.Selector.select(selector, element || document);
Chris@441:     }
Chris@441:   });
Chris@441: })();