rlm@79: /*  Prototype JavaScript framework, version 1.6.1
rlm@79:  *  (c) 2005-2009 Sam Stephenson
rlm@79:  *
rlm@79:  *  Prototype is freely distributable under the terms of an MIT-style license.
rlm@79:  *  For details, see the Prototype web site: http://www.prototypejs.org/
rlm@79:  *
rlm@79:  *--------------------------------------------------------------------------*/
rlm@79: 
rlm@79: var Prototype = {
rlm@79:   Version: '1.6.1',
rlm@79: 
rlm@79:   Browser: (function(){
rlm@79:     var ua = navigator.userAgent;
rlm@79:     var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]';
rlm@79:     return {
rlm@79:       IE:             !!window.attachEvent && !isOpera,
rlm@79:       Opera:          isOpera,
rlm@79:       WebKit:         ua.indexOf('AppleWebKit/') > -1,
rlm@79:       Gecko:          ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') === -1,
rlm@79:       MobileSafari:   /Apple.*Mobile.*Safari/.test(ua)
rlm@79:     }
rlm@79:   })(),
rlm@79: 
rlm@79:   BrowserFeatures: {
rlm@79:     XPath: !!document.evaluate,
rlm@79:     SelectorsAPI: !!document.querySelector,
rlm@79:     ElementExtensions: (function() {
rlm@79:       var constructor = window.Element || window.HTMLElement;
rlm@79:       return !!(constructor && constructor.prototype);
rlm@79:     })(),
rlm@79:     SpecificElementExtensions: (function() {
rlm@79:       if (typeof window.HTMLDivElement !== 'undefined')
rlm@79:         return true;
rlm@79: 
rlm@79:       var div = document.createElement('div');
rlm@79:       var form = document.createElement('form');
rlm@79:       var isSupported = false;
rlm@79: 
rlm@79:       if (div['__proto__'] && (div['__proto__'] !== form['__proto__'])) {
rlm@79:         isSupported = true;
rlm@79:       }
rlm@79: 
rlm@79:       div = form = null;
rlm@79: 
rlm@79:       return isSupported;
rlm@79:     })()
rlm@79:   },
rlm@79: 
rlm@79:   ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
rlm@79:   JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,
rlm@79: 
rlm@79:   emptyFunction: function() { },
rlm@79:   K: function(x) { return x }
rlm@79: };
rlm@79: 
rlm@79: if (Prototype.Browser.MobileSafari)
rlm@79:   Prototype.BrowserFeatures.SpecificElementExtensions = false;
rlm@79: 
rlm@79: 
rlm@79: var Abstract = { };
rlm@79: 
rlm@79: 
rlm@79: var Try = {
rlm@79:   these: function() {
rlm@79:     var returnValue;
rlm@79: 
rlm@79:     for (var i = 0, length = arguments.length; i < length; i++) {
rlm@79:       var lambda = arguments[i];
rlm@79:       try {
rlm@79:         returnValue = lambda();
rlm@79:         break;
rlm@79:       } catch (e) { }
rlm@79:     }
rlm@79: 
rlm@79:     return returnValue;
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: /* Based on Alex Arnell's inheritance implementation. */
rlm@79: 
rlm@79: var Class = (function() {
rlm@79:   function subclass() {};
rlm@79:   function create() {
rlm@79:     var parent = null, properties = $A(arguments);
rlm@79:     if (Object.isFunction(properties[0]))
rlm@79:       parent = properties.shift();
rlm@79: 
rlm@79:     function klass() {
rlm@79:       this.initialize.apply(this, arguments);
rlm@79:     }
rlm@79: 
rlm@79:     Object.extend(klass, Class.Methods);
rlm@79:     klass.superclass = parent;
rlm@79:     klass.subclasses = [];
rlm@79: 
rlm@79:     if (parent) {
rlm@79:       subclass.prototype = parent.prototype;
rlm@79:       klass.prototype = new subclass;
rlm@79:       parent.subclasses.push(klass);
rlm@79:     }
rlm@79: 
rlm@79:     for (var i = 0; i < properties.length; i++)
rlm@79:       klass.addMethods(properties[i]);
rlm@79: 
rlm@79:     if (!klass.prototype.initialize)
rlm@79:       klass.prototype.initialize = Prototype.emptyFunction;
rlm@79: 
rlm@79:     klass.prototype.constructor = klass;
rlm@79:     return klass;
rlm@79:   }
rlm@79: 
rlm@79:   function addMethods(source) {
rlm@79:     var ancestor   = this.superclass && this.superclass.prototype;
rlm@79:     var properties = Object.keys(source);
rlm@79: 
rlm@79:     if (!Object.keys({ toString: true }).length) {
rlm@79:       if (source.toString != Object.prototype.toString)
rlm@79:         properties.push("toString");
rlm@79:       if (source.valueOf != Object.prototype.valueOf)
rlm@79:         properties.push("valueOf");
rlm@79:     }
rlm@79: 
rlm@79:     for (var i = 0, length = properties.length; i < length; i++) {
rlm@79:       var property = properties[i], value = source[property];
rlm@79:       if (ancestor && Object.isFunction(value) &&
rlm@79:           value.argumentNames().first() == "$super") {
rlm@79:         var method = value;
rlm@79:         value = (function(m) {
rlm@79:           return function() { return ancestor[m].apply(this, arguments); };
rlm@79:         })(property).wrap(method);
rlm@79: 
rlm@79:         value.valueOf = method.valueOf.bind(method);
rlm@79:         value.toString = method.toString.bind(method);
rlm@79:       }
rlm@79:       this.prototype[property] = value;
rlm@79:     }
rlm@79: 
rlm@79:     return this;
rlm@79:   }
rlm@79: 
rlm@79:   return {
rlm@79:     create: create,
rlm@79:     Methods: {
rlm@79:       addMethods: addMethods
rlm@79:     }
rlm@79:   };
rlm@79: })();
rlm@79: (function() {
rlm@79: 
rlm@79:   var _toString = Object.prototype.toString;
rlm@79: 
rlm@79:   function extend(destination, source) {
rlm@79:     for (var property in source)
rlm@79:       destination[property] = source[property];
rlm@79:     return destination;
rlm@79:   }
rlm@79: 
rlm@79:   function inspect(object) {
rlm@79:     try {
rlm@79:       if (isUndefined(object)) return 'undefined';
rlm@79:       if (object === null) return 'null';
rlm@79:       return object.inspect ? object.inspect() : String(object);
rlm@79:     } catch (e) {
rlm@79:       if (e instanceof RangeError) return '...';
rlm@79:       throw e;
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   function toJSON(object) {
rlm@79:     var type = typeof object;
rlm@79:     switch (type) {
rlm@79:       case 'undefined':
rlm@79:       case 'function':
rlm@79:       case 'unknown': return;
rlm@79:       case 'boolean': return object.toString();
rlm@79:     }
rlm@79: 
rlm@79:     if (object === null) return 'null';
rlm@79:     if (object.toJSON) return object.toJSON();
rlm@79:     if (isElement(object)) return;
rlm@79: 
rlm@79:     var results = [];
rlm@79:     for (var property in object) {
rlm@79:       var value = toJSON(object[property]);
rlm@79:       if (!isUndefined(value))
rlm@79:         results.push(property.toJSON() + ': ' + value);
rlm@79:     }
rlm@79: 
rlm@79:     return '{' + results.join(', ') + '}';
rlm@79:   }
rlm@79: 
rlm@79:   function toQueryString(object) {
rlm@79:     return $H(object).toQueryString();
rlm@79:   }
rlm@79: 
rlm@79:   function toHTML(object) {
rlm@79:     return object && object.toHTML ? object.toHTML() : String.interpret(object);
rlm@79:   }
rlm@79: 
rlm@79:   function keys(object) {
rlm@79:     var results = [];
rlm@79:     for (var property in object)
rlm@79:       results.push(property);
rlm@79:     return results;
rlm@79:   }
rlm@79: 
rlm@79:   function values(object) {
rlm@79:     var results = [];
rlm@79:     for (var property in object)
rlm@79:       results.push(object[property]);
rlm@79:     return results;
rlm@79:   }
rlm@79: 
rlm@79:   function clone(object) {
rlm@79:     return extend({ }, object);
rlm@79:   }
rlm@79: 
rlm@79:   function isElement(object) {
rlm@79:     return !!(object && object.nodeType == 1);
rlm@79:   }
rlm@79: 
rlm@79:   function isArray(object) {
rlm@79:     return _toString.call(object) == "[object Array]";
rlm@79:   }
rlm@79: 
rlm@79: 
rlm@79:   function isHash(object) {
rlm@79:     return object instanceof Hash;
rlm@79:   }
rlm@79: 
rlm@79:   function isFunction(object) {
rlm@79:     return typeof object === "function";
rlm@79:   }
rlm@79: 
rlm@79:   function isString(object) {
rlm@79:     return _toString.call(object) == "[object String]";
rlm@79:   }
rlm@79: 
rlm@79:   function isNumber(object) {
rlm@79:     return _toString.call(object) == "[object Number]";
rlm@79:   }
rlm@79: 
rlm@79:   function isUndefined(object) {
rlm@79:     return typeof object === "undefined";
rlm@79:   }
rlm@79: 
rlm@79:   extend(Object, {
rlm@79:     extend:        extend,
rlm@79:     inspect:       inspect,
rlm@79:     toJSON:        toJSON,
rlm@79:     toQueryString: toQueryString,
rlm@79:     toHTML:        toHTML,
rlm@79:     keys:          keys,
rlm@79:     values:        values,
rlm@79:     clone:         clone,
rlm@79:     isElement:     isElement,
rlm@79:     isArray:       isArray,
rlm@79:     isHash:        isHash,
rlm@79:     isFunction:    isFunction,
rlm@79:     isString:      isString,
rlm@79:     isNumber:      isNumber,
rlm@79:     isUndefined:   isUndefined
rlm@79:   });
rlm@79: })();
rlm@79: Object.extend(Function.prototype, (function() {
rlm@79:   var slice = Array.prototype.slice;
rlm@79: 
rlm@79:   function update(array, args) {
rlm@79:     var arrayLength = array.length, length = args.length;
rlm@79:     while (length--) array[arrayLength + length] = args[length];
rlm@79:     return array;
rlm@79:   }
rlm@79: 
rlm@79:   function merge(array, args) {
rlm@79:     array = slice.call(array, 0);
rlm@79:     return update(array, args);
rlm@79:   }
rlm@79: 
rlm@79:   function argumentNames() {
rlm@79:     var names = this.toString().match(/^[\s\(]*function[^(]*\(([^)]*)\)/)[1]
rlm@79:       .replace(/\/\/.*?[\r\n]|\/\*(?:.|[\r\n])*?\*\//g, '')
rlm@79:       .replace(/\s+/g, '').split(',');
rlm@79:     return names.length == 1 && !names[0] ? [] : names;
rlm@79:   }
rlm@79: 
rlm@79:   function bind(context) {
rlm@79:     if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
rlm@79:     var __method = this, args = slice.call(arguments, 1);
rlm@79:     return function() {
rlm@79:       var a = merge(args, arguments);
rlm@79:       return __method.apply(context, a);
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   function bindAsEventListener(context) {
rlm@79:     var __method = this, args = slice.call(arguments, 1);
rlm@79:     return function(event) {
rlm@79:       var a = update([event || window.event], args);
rlm@79:       return __method.apply(context, a);
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   function curry() {
rlm@79:     if (!arguments.length) return this;
rlm@79:     var __method = this, args = slice.call(arguments, 0);
rlm@79:     return function() {
rlm@79:       var a = merge(args, arguments);
rlm@79:       return __method.apply(this, a);
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   function delay(timeout) {
rlm@79:     var __method = this, args = slice.call(arguments, 1);
rlm@79:     timeout = timeout * 1000
rlm@79:     return window.setTimeout(function() {
rlm@79:       return __method.apply(__method, args);
rlm@79:     }, timeout);
rlm@79:   }
rlm@79: 
rlm@79:   function defer() {
rlm@79:     var args = update([0.01], arguments);
rlm@79:     return this.delay.apply(this, args);
rlm@79:   }
rlm@79: 
rlm@79:   function wrap(wrapper) {
rlm@79:     var __method = this;
rlm@79:     return function() {
rlm@79:       var a = update([__method.bind(this)], arguments);
rlm@79:       return wrapper.apply(this, a);
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   function methodize() {
rlm@79:     if (this._methodized) return this._methodized;
rlm@79:     var __method = this;
rlm@79:     return this._methodized = function() {
rlm@79:       var a = update([this], arguments);
rlm@79:       return __method.apply(null, a);
rlm@79:     };
rlm@79:   }
rlm@79: 
rlm@79:   return {
rlm@79:     argumentNames:       argumentNames,
rlm@79:     bind:                bind,
rlm@79:     bindAsEventListener: bindAsEventListener,
rlm@79:     curry:               curry,
rlm@79:     delay:               delay,
rlm@79:     defer:               defer,
rlm@79:     wrap:                wrap,
rlm@79:     methodize:           methodize
rlm@79:   }
rlm@79: })());
rlm@79: 
rlm@79: 
rlm@79: Date.prototype.toJSON = function() {
rlm@79:   return '"' + this.getUTCFullYear() + '-' +
rlm@79:     (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
rlm@79:     this.getUTCDate().toPaddedString(2) + 'T' +
rlm@79:     this.getUTCHours().toPaddedString(2) + ':' +
rlm@79:     this.getUTCMinutes().toPaddedString(2) + ':' +
rlm@79:     this.getUTCSeconds().toPaddedString(2) + 'Z"';
rlm@79: };
rlm@79: 
rlm@79: 
rlm@79: RegExp.prototype.match = RegExp.prototype.test;
rlm@79: 
rlm@79: RegExp.escape = function(str) {
rlm@79:   return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
rlm@79: };
rlm@79: var PeriodicalExecuter = Class.create({
rlm@79:   initialize: function(callback, frequency) {
rlm@79:     this.callback = callback;
rlm@79:     this.frequency = frequency;
rlm@79:     this.currentlyExecuting = false;
rlm@79: 
rlm@79:     this.registerCallback();
rlm@79:   },
rlm@79: 
rlm@79:   registerCallback: function() {
rlm@79:     this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
rlm@79:   },
rlm@79: 
rlm@79:   execute: function() {
rlm@79:     this.callback(this);
rlm@79:   },
rlm@79: 
rlm@79:   stop: function() {
rlm@79:     if (!this.timer) return;
rlm@79:     clearInterval(this.timer);
rlm@79:     this.timer = null;
rlm@79:   },
rlm@79: 
rlm@79:   onTimerEvent: function() {
rlm@79:     if (!this.currentlyExecuting) {
rlm@79:       try {
rlm@79:         this.currentlyExecuting = true;
rlm@79:         this.execute();
rlm@79:         this.currentlyExecuting = false;
rlm@79:       } catch(e) {
rlm@79:         this.currentlyExecuting = false;
rlm@79:         throw e;
rlm@79:       }
rlm@79:     }
rlm@79:   }
rlm@79: });
rlm@79: Object.extend(String, {
rlm@79:   interpret: function(value) {
rlm@79:     return value == null ? '' : String(value);
rlm@79:   },
rlm@79:   specialChar: {
rlm@79:     '\b': '\\b',
rlm@79:     '\t': '\\t',
rlm@79:     '\n': '\\n',
rlm@79:     '\f': '\\f',
rlm@79:     '\r': '\\r',
rlm@79:     '\\': '\\\\'
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: Object.extend(String.prototype, (function() {
rlm@79: 
rlm@79:   function prepareReplacement(replacement) {
rlm@79:     if (Object.isFunction(replacement)) return replacement;
rlm@79:     var template = new Template(replacement);
rlm@79:     return function(match) { return template.evaluate(match) };
rlm@79:   }
rlm@79: 
rlm@79:   function gsub(pattern, replacement) {
rlm@79:     var result = '', source = this, match;
rlm@79:     replacement = prepareReplacement(replacement);
rlm@79: 
rlm@79:     if (Object.isString(pattern))
rlm@79:       pattern = RegExp.escape(pattern);
rlm@79: 
rlm@79:     if (!(pattern.length || pattern.source)) {
rlm@79:       replacement = replacement('');
rlm@79:       return replacement + source.split('').join(replacement) + replacement;
rlm@79:     }
rlm@79: 
rlm@79:     while (source.length > 0) {
rlm@79:       if (match = source.match(pattern)) {
rlm@79:         result += source.slice(0, match.index);
rlm@79:         result += String.interpret(replacement(match));
rlm@79:         source  = source.slice(match.index + match[0].length);
rlm@79:       } else {
rlm@79:         result += source, source = '';
rlm@79:       }
rlm@79:     }
rlm@79:     return result;
rlm@79:   }
rlm@79: 
rlm@79:   function sub(pattern, replacement, count) {
rlm@79:     replacement = prepareReplacement(replacement);
rlm@79:     count = Object.isUndefined(count) ? 1 : count;
rlm@79: 
rlm@79:     return this.gsub(pattern, function(match) {
rlm@79:       if (--count < 0) return match[0];
rlm@79:       return replacement(match);
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function scan(pattern, iterator) {
rlm@79:     this.gsub(pattern, iterator);
rlm@79:     return String(this);
rlm@79:   }
rlm@79: 
rlm@79:   function truncate(length, truncation) {
rlm@79:     length = length || 30;
rlm@79:     truncation = Object.isUndefined(truncation) ? '...' : truncation;
rlm@79:     return this.length > length ?
rlm@79:       this.slice(0, length - truncation.length) + truncation : String(this);
rlm@79:   }
rlm@79: 
rlm@79:   function strip() {
rlm@79:     return this.replace(/^\s+/, '').replace(/\s+$/, '');
rlm@79:   }
rlm@79: 
rlm@79:   function stripTags() {
rlm@79:     return this.replace(/<\w+(\s+("[^"]*"|'[^']*'|[^>])+)?>|<\/\w+>/gi, '');
rlm@79:   }
rlm@79: 
rlm@79:   function stripScripts() {
rlm@79:     return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
rlm@79:   }
rlm@79: 
rlm@79:   function extractScripts() {
rlm@79:     var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
rlm@79:     var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
rlm@79:     return (this.match(matchAll) || []).map(function(scriptTag) {
rlm@79:       return (scriptTag.match(matchOne) || ['', ''])[1];
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function evalScripts() {
rlm@79:     return this.extractScripts().map(function(script) { return eval(script) });
rlm@79:   }
rlm@79: 
rlm@79:   function escapeHTML() {
rlm@79:     return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
rlm@79:   }
rlm@79: 
rlm@79:   function unescapeHTML() {
rlm@79:     return this.stripTags().replace(/&lt;/g,'<').replace(/&gt;/g,'>').replace(/&amp;/g,'&');
rlm@79:   }
rlm@79: 
rlm@79: 
rlm@79:   function toQueryParams(separator) {
rlm@79:     var match = this.strip().match(/([^?#]*)(#.*)?$/);
rlm@79:     if (!match) return { };
rlm@79: 
rlm@79:     return match[1].split(separator || '&').inject({ }, function(hash, pair) {
rlm@79:       if ((pair = pair.split('='))[0]) {
rlm@79:         var key = decodeURIComponent(pair.shift());
rlm@79:         var value = pair.length > 1 ? pair.join('=') : pair[0];
rlm@79:         if (value != undefined) value = decodeURIComponent(value);
rlm@79: 
rlm@79:         if (key in hash) {
rlm@79:           if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
rlm@79:           hash[key].push(value);
rlm@79:         }
rlm@79:         else hash[key] = value;
rlm@79:       }
rlm@79:       return hash;
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function toArray() {
rlm@79:     return this.split('');
rlm@79:   }
rlm@79: 
rlm@79:   function succ() {
rlm@79:     return this.slice(0, this.length - 1) +
rlm@79:       String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
rlm@79:   }
rlm@79: 
rlm@79:   function times(count) {
rlm@79:     return count < 1 ? '' : new Array(count + 1).join(this);
rlm@79:   }
rlm@79: 
rlm@79:   function camelize() {
rlm@79:     var parts = this.split('-'), len = parts.length;
rlm@79:     if (len == 1) return parts[0];
rlm@79: 
rlm@79:     var camelized = this.charAt(0) == '-'
rlm@79:       ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
rlm@79:       : parts[0];
rlm@79: 
rlm@79:     for (var i = 1; i < len; i++)
rlm@79:       camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
rlm@79: 
rlm@79:     return camelized;
rlm@79:   }
rlm@79: 
rlm@79:   function capitalize() {
rlm@79:     return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
rlm@79:   }
rlm@79: 
rlm@79:   function underscore() {
rlm@79:     return this.replace(/::/g, '/')
rlm@79:                .replace(/([A-Z]+)([A-Z][a-z])/g, '$1_$2')
rlm@79:                .replace(/([a-z\d])([A-Z])/g, '$1_$2')
rlm@79:                .replace(/-/g, '_')
rlm@79:                .toLowerCase();
rlm@79:   }
rlm@79: 
rlm@79:   function dasherize() {
rlm@79:     return this.replace(/_/g, '-');
rlm@79:   }
rlm@79: 
rlm@79:   function inspect(useDoubleQuotes) {
rlm@79:     var escapedString = this.replace(/[\x00-\x1f\\]/g, function(character) {
rlm@79:       if (character in String.specialChar) {
rlm@79:         return String.specialChar[character];
rlm@79:       }
rlm@79:       return '\\u00' + character.charCodeAt().toPaddedString(2, 16);
rlm@79:     });
rlm@79:     if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
rlm@79:     return "'" + escapedString.replace(/'/g, '\\\'') + "'";
rlm@79:   }
rlm@79: 
rlm@79:   function toJSON() {
rlm@79:     return this.inspect(true);
rlm@79:   }
rlm@79: 
rlm@79:   function unfilterJSON(filter) {
rlm@79:     return this.replace(filter || Prototype.JSONFilter, '$1');
rlm@79:   }
rlm@79: 
rlm@79:   function isJSON() {
rlm@79:     var str = this;
rlm@79:     if (str.blank()) return false;
rlm@79:     str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
rlm@79:     return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
rlm@79:   }
rlm@79: 
rlm@79:   function evalJSON(sanitize) {
rlm@79:     var json = this.unfilterJSON();
rlm@79:     try {
rlm@79:       if (!sanitize || json.isJSON()) return eval('(' + json + ')');
rlm@79:     } catch (e) { }
rlm@79:     throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
rlm@79:   }
rlm@79: 
rlm@79:   function include(pattern) {
rlm@79:     return this.indexOf(pattern) > -1;
rlm@79:   }
rlm@79: 
rlm@79:   function startsWith(pattern) {
rlm@79:     return this.indexOf(pattern) === 0;
rlm@79:   }
rlm@79: 
rlm@79:   function endsWith(pattern) {
rlm@79:     var d = this.length - pattern.length;
rlm@79:     return d >= 0 && this.lastIndexOf(pattern) === d;
rlm@79:   }
rlm@79: 
rlm@79:   function empty() {
rlm@79:     return this == '';
rlm@79:   }
rlm@79: 
rlm@79:   function blank() {
rlm@79:     return /^\s*$/.test(this);
rlm@79:   }
rlm@79: 
rlm@79:   function interpolate(object, pattern) {
rlm@79:     return new Template(this, pattern).evaluate(object);
rlm@79:   }
rlm@79: 
rlm@79:   return {
rlm@79:     gsub:           gsub,
rlm@79:     sub:            sub,
rlm@79:     scan:           scan,
rlm@79:     truncate:       truncate,
rlm@79:     strip:          String.prototype.trim ? String.prototype.trim : strip,
rlm@79:     stripTags:      stripTags,
rlm@79:     stripScripts:   stripScripts,
rlm@79:     extractScripts: extractScripts,
rlm@79:     evalScripts:    evalScripts,
rlm@79:     escapeHTML:     escapeHTML,
rlm@79:     unescapeHTML:   unescapeHTML,
rlm@79:     toQueryParams:  toQueryParams,
rlm@79:     parseQuery:     toQueryParams,
rlm@79:     toArray:        toArray,
rlm@79:     succ:           succ,
rlm@79:     times:          times,
rlm@79:     camelize:       camelize,
rlm@79:     capitalize:     capitalize,
rlm@79:     underscore:     underscore,
rlm@79:     dasherize:      dasherize,
rlm@79:     inspect:        inspect,
rlm@79:     toJSON:         toJSON,
rlm@79:     unfilterJSON:   unfilterJSON,
rlm@79:     isJSON:         isJSON,
rlm@79:     evalJSON:       evalJSON,
rlm@79:     include:        include,
rlm@79:     startsWith:     startsWith,
rlm@79:     endsWith:       endsWith,
rlm@79:     empty:          empty,
rlm@79:     blank:          blank,
rlm@79:     interpolate:    interpolate
rlm@79:   };
rlm@79: })());
rlm@79: 
rlm@79: var Template = Class.create({
rlm@79:   initialize: function(template, pattern) {
rlm@79:     this.template = template.toString();
rlm@79:     this.pattern = pattern || Template.Pattern;
rlm@79:   },
rlm@79: 
rlm@79:   evaluate: function(object) {
rlm@79:     if (object && Object.isFunction(object.toTemplateReplacements))
rlm@79:       object = object.toTemplateReplacements();
rlm@79: 
rlm@79:     return this.template.gsub(this.pattern, function(match) {
rlm@79:       if (object == null) return (match[1] + '');
rlm@79: 
rlm@79:       var before = match[1] || '';
rlm@79:       if (before == '\\') return match[2];
rlm@79: 
rlm@79:       var ctx = object, expr = match[3];
rlm@79:       var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
rlm@79:       match = pattern.exec(expr);
rlm@79:       if (match == null) return before;
rlm@79: 
rlm@79:       while (match != null) {
rlm@79:         var comp = match[1].startsWith('[') ? match[2].replace(/\\\\]/g, ']') : match[1];
rlm@79:         ctx = ctx[comp];
rlm@79:         if (null == ctx || '' == match[3]) break;
rlm@79:         expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
rlm@79:         match = pattern.exec(expr);
rlm@79:       }
rlm@79: 
rlm@79:       return before + String.interpret(ctx);
rlm@79:     });
rlm@79:   }
rlm@79: });
rlm@79: Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
rlm@79: 
rlm@79: var $break = { };
rlm@79: 
rlm@79: var Enumerable = (function() {
rlm@79:   function each(iterator, context) {
rlm@79:     var index = 0;
rlm@79:     try {
rlm@79:       this._each(function(value) {
rlm@79:         iterator.call(context, value, index++);
rlm@79:       });
rlm@79:     } catch (e) {
rlm@79:       if (e != $break) throw e;
rlm@79:     }
rlm@79:     return this;
rlm@79:   }
rlm@79: 
rlm@79:   function eachSlice(number, iterator, context) {
rlm@79:     var index = -number, slices = [], array = this.toArray();
rlm@79:     if (number < 1) return array;
rlm@79:     while ((index += number) < array.length)
rlm@79:       slices.push(array.slice(index, index+number));
rlm@79:     return slices.collect(iterator, context);
rlm@79:   }
rlm@79: 
rlm@79:   function all(iterator, context) {
rlm@79:     iterator = iterator || Prototype.K;
rlm@79:     var result = true;
rlm@79:     this.each(function(value, index) {
rlm@79:       result = result && !!iterator.call(context, value, index);
rlm@79:       if (!result) throw $break;
rlm@79:     });
rlm@79:     return result;
rlm@79:   }
rlm@79: 
rlm@79:   function any(iterator, context) {
rlm@79:     iterator = iterator || Prototype.K;
rlm@79:     var result = false;
rlm@79:     this.each(function(value, index) {
rlm@79:       if (result = !!iterator.call(context, value, index))
rlm@79:         throw $break;
rlm@79:     });
rlm@79:     return result;
rlm@79:   }
rlm@79: 
rlm@79:   function collect(iterator, context) {
rlm@79:     iterator = iterator || Prototype.K;
rlm@79:     var results = [];
rlm@79:     this.each(function(value, index) {
rlm@79:       results.push(iterator.call(context, value, index));
rlm@79:     });
rlm@79:     return results;
rlm@79:   }
rlm@79: 
rlm@79:   function detect(iterator, context) {
rlm@79:     var result;
rlm@79:     this.each(function(value, index) {
rlm@79:       if (iterator.call(context, value, index)) {
rlm@79:         result = value;
rlm@79:         throw $break;
rlm@79:       }
rlm@79:     });
rlm@79:     return result;
rlm@79:   }
rlm@79: 
rlm@79:   function findAll(iterator, context) {
rlm@79:     var results = [];
rlm@79:     this.each(function(value, index) {
rlm@79:       if (iterator.call(context, value, index))
rlm@79:         results.push(value);
rlm@79:     });
rlm@79:     return results;
rlm@79:   }
rlm@79: 
rlm@79:   function grep(filter, iterator, context) {
rlm@79:     iterator = iterator || Prototype.K;
rlm@79:     var results = [];
rlm@79: 
rlm@79:     if (Object.isString(filter))
rlm@79:       filter = new RegExp(RegExp.escape(filter));
rlm@79: 
rlm@79:     this.each(function(value, index) {
rlm@79:       if (filter.match(value))
rlm@79:         results.push(iterator.call(context, value, index));
rlm@79:     });
rlm@79:     return results;
rlm@79:   }
rlm@79: 
rlm@79:   function include(object) {
rlm@79:     if (Object.isFunction(this.indexOf))
rlm@79:       if (this.indexOf(object) != -1) return true;
rlm@79: 
rlm@79:     var found = false;
rlm@79:     this.each(function(value) {
rlm@79:       if (value == object) {
rlm@79:         found = true;
rlm@79:         throw $break;
rlm@79:       }
rlm@79:     });
rlm@79:     return found;
rlm@79:   }
rlm@79: 
rlm@79:   function inGroupsOf(number, fillWith) {
rlm@79:     fillWith = Object.isUndefined(fillWith) ? null : fillWith;
rlm@79:     return this.eachSlice(number, function(slice) {
rlm@79:       while(slice.length < number) slice.push(fillWith);
rlm@79:       return slice;
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function inject(memo, iterator, context) {
rlm@79:     this.each(function(value, index) {
rlm@79:       memo = iterator.call(context, memo, value, index);
rlm@79:     });
rlm@79:     return memo;
rlm@79:   }
rlm@79: 
rlm@79:   function invoke(method) {
rlm@79:     var args = $A(arguments).slice(1);
rlm@79:     return this.map(function(value) {
rlm@79:       return value[method].apply(value, args);
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function max(iterator, context) {
rlm@79:     iterator = iterator || Prototype.K;
rlm@79:     var result;
rlm@79:     this.each(function(value, index) {
rlm@79:       value = iterator.call(context, value, index);
rlm@79:       if (result == null || value >= result)
rlm@79:         result = value;
rlm@79:     });
rlm@79:     return result;
rlm@79:   }
rlm@79: 
rlm@79:   function min(iterator, context) {
rlm@79:     iterator = iterator || Prototype.K;
rlm@79:     var result;
rlm@79:     this.each(function(value, index) {
rlm@79:       value = iterator.call(context, value, index);
rlm@79:       if (result == null || value < result)
rlm@79:         result = value;
rlm@79:     });
rlm@79:     return result;
rlm@79:   }
rlm@79: 
rlm@79:   function partition(iterator, context) {
rlm@79:     iterator = iterator || Prototype.K;
rlm@79:     var trues = [], falses = [];
rlm@79:     this.each(function(value, index) {
rlm@79:       (iterator.call(context, value, index) ?
rlm@79:         trues : falses).push(value);
rlm@79:     });
rlm@79:     return [trues, falses];
rlm@79:   }
rlm@79: 
rlm@79:   function pluck(property) {
rlm@79:     var results = [];
rlm@79:     this.each(function(value) {
rlm@79:       results.push(value[property]);
rlm@79:     });
rlm@79:     return results;
rlm@79:   }
rlm@79: 
rlm@79:   function reject(iterator, context) {
rlm@79:     var results = [];
rlm@79:     this.each(function(value, index) {
rlm@79:       if (!iterator.call(context, value, index))
rlm@79:         results.push(value);
rlm@79:     });
rlm@79:     return results;
rlm@79:   }
rlm@79: 
rlm@79:   function sortBy(iterator, context) {
rlm@79:     return this.map(function(value, index) {
rlm@79:       return {
rlm@79:         value: value,
rlm@79:         criteria: iterator.call(context, value, index)
rlm@79:       };
rlm@79:     }).sort(function(left, right) {
rlm@79:       var a = left.criteria, b = right.criteria;
rlm@79:       return a < b ? -1 : a > b ? 1 : 0;
rlm@79:     }).pluck('value');
rlm@79:   }
rlm@79: 
rlm@79:   function toArray() {
rlm@79:     return this.map();
rlm@79:   }
rlm@79: 
rlm@79:   function zip() {
rlm@79:     var iterator = Prototype.K, args = $A(arguments);
rlm@79:     if (Object.isFunction(args.last()))
rlm@79:       iterator = args.pop();
rlm@79: 
rlm@79:     var collections = [this].concat(args).map($A);
rlm@79:     return this.map(function(value, index) {
rlm@79:       return iterator(collections.pluck(index));
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function size() {
rlm@79:     return this.toArray().length;
rlm@79:   }
rlm@79: 
rlm@79:   function inspect() {
rlm@79:     return '#<Enumerable:' + this.toArray().inspect() + '>';
rlm@79:   }
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79:   return {
rlm@79:     each:       each,
rlm@79:     eachSlice:  eachSlice,
rlm@79:     all:        all,
rlm@79:     every:      all,
rlm@79:     any:        any,
rlm@79:     some:       any,
rlm@79:     collect:    collect,
rlm@79:     map:        collect,
rlm@79:     detect:     detect,
rlm@79:     findAll:    findAll,
rlm@79:     select:     findAll,
rlm@79:     filter:     findAll,
rlm@79:     grep:       grep,
rlm@79:     include:    include,
rlm@79:     member:     include,
rlm@79:     inGroupsOf: inGroupsOf,
rlm@79:     inject:     inject,
rlm@79:     invoke:     invoke,
rlm@79:     max:        max,
rlm@79:     min:        min,
rlm@79:     partition:  partition,
rlm@79:     pluck:      pluck,
rlm@79:     reject:     reject,
rlm@79:     sortBy:     sortBy,
rlm@79:     toArray:    toArray,
rlm@79:     entries:    toArray,
rlm@79:     zip:        zip,
rlm@79:     size:       size,
rlm@79:     inspect:    inspect,
rlm@79:     find:       detect
rlm@79:   };
rlm@79: })();
rlm@79: function $A(iterable) {
rlm@79:   if (!iterable) return [];
rlm@79:   if ('toArray' in Object(iterable)) return iterable.toArray();
rlm@79:   var length = iterable.length || 0, results = new Array(length);
rlm@79:   while (length--) results[length] = iterable[length];
rlm@79:   return results;
rlm@79: }
rlm@79: 
rlm@79: function $w(string) {
rlm@79:   if (!Object.isString(string)) return [];
rlm@79:   string = string.strip();
rlm@79:   return string ? string.split(/\s+/) : [];
rlm@79: }
rlm@79: 
rlm@79: Array.from = $A;
rlm@79: 
rlm@79: 
rlm@79: (function() {
rlm@79:   var arrayProto = Array.prototype,
rlm@79:       slice = arrayProto.slice,
rlm@79:       _each = arrayProto.forEach; // use native browser JS 1.6 implementation if available
rlm@79: 
rlm@79:   function each(iterator) {
rlm@79:     for (var i = 0, length = this.length; i < length; i++)
rlm@79:       iterator(this[i]);
rlm@79:   }
rlm@79:   if (!_each) _each = each;
rlm@79: 
rlm@79:   function clear() {
rlm@79:     this.length = 0;
rlm@79:     return this;
rlm@79:   }
rlm@79: 
rlm@79:   function first() {
rlm@79:     return this[0];
rlm@79:   }
rlm@79: 
rlm@79:   function last() {
rlm@79:     return this[this.length - 1];
rlm@79:   }
rlm@79: 
rlm@79:   function compact() {
rlm@79:     return this.select(function(value) {
rlm@79:       return value != null;
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function flatten() {
rlm@79:     return this.inject([], function(array, value) {
rlm@79:       if (Object.isArray(value))
rlm@79:         return array.concat(value.flatten());
rlm@79:       array.push(value);
rlm@79:       return array;
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function without() {
rlm@79:     var values = slice.call(arguments, 0);
rlm@79:     return this.select(function(value) {
rlm@79:       return !values.include(value);
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function reverse(inline) {
rlm@79:     return (inline !== false ? this : this.toArray())._reverse();
rlm@79:   }
rlm@79: 
rlm@79:   function uniq(sorted) {
rlm@79:     return this.inject([], function(array, value, index) {
rlm@79:       if (0 == index || (sorted ? array.last() != value : !array.include(value)))
rlm@79:         array.push(value);
rlm@79:       return array;
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function intersect(array) {
rlm@79:     return this.uniq().findAll(function(item) {
rlm@79:       return array.detect(function(value) { return item === value });
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79: 
rlm@79:   function clone() {
rlm@79:     return slice.call(this, 0);
rlm@79:   }
rlm@79: 
rlm@79:   function size() {
rlm@79:     return this.length;
rlm@79:   }
rlm@79: 
rlm@79:   function inspect() {
rlm@79:     return '[' + this.map(Object.inspect).join(', ') + ']';
rlm@79:   }
rlm@79: 
rlm@79:   function toJSON() {
rlm@79:     var results = [];
rlm@79:     this.each(function(object) {
rlm@79:       var value = Object.toJSON(object);
rlm@79:       if (!Object.isUndefined(value)) results.push(value);
rlm@79:     });
rlm@79:     return '[' + results.join(', ') + ']';
rlm@79:   }
rlm@79: 
rlm@79:   function indexOf(item, i) {
rlm@79:     i || (i = 0);
rlm@79:     var length = this.length;
rlm@79:     if (i < 0) i = length + i;
rlm@79:     for (; i < length; i++)
rlm@79:       if (this[i] === item) return i;
rlm@79:     return -1;
rlm@79:   }
rlm@79: 
rlm@79:   function lastIndexOf(item, i) {
rlm@79:     i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
rlm@79:     var n = this.slice(0, i).reverse().indexOf(item);
rlm@79:     return (n < 0) ? n : i - n - 1;
rlm@79:   }
rlm@79: 
rlm@79:   function concat() {
rlm@79:     var array = slice.call(this, 0), item;
rlm@79:     for (var i = 0, length = arguments.length; i < length; i++) {
rlm@79:       item = arguments[i];
rlm@79:       if (Object.isArray(item) && !('callee' in item)) {
rlm@79:         for (var j = 0, arrayLength = item.length; j < arrayLength; j++)
rlm@79:           array.push(item[j]);
rlm@79:       } else {
rlm@79:         array.push(item);
rlm@79:       }
rlm@79:     }
rlm@79:     return array;
rlm@79:   }
rlm@79: 
rlm@79:   Object.extend(arrayProto, Enumerable);
rlm@79: 
rlm@79:   if (!arrayProto._reverse)
rlm@79:     arrayProto._reverse = arrayProto.reverse;
rlm@79: 
rlm@79:   Object.extend(arrayProto, {
rlm@79:     _each:     _each,
rlm@79:     clear:     clear,
rlm@79:     first:     first,
rlm@79:     last:      last,
rlm@79:     compact:   compact,
rlm@79:     flatten:   flatten,
rlm@79:     without:   without,
rlm@79:     reverse:   reverse,
rlm@79:     uniq:      uniq,
rlm@79:     intersect: intersect,
rlm@79:     clone:     clone,
rlm@79:     toArray:   clone,
rlm@79:     size:      size,
rlm@79:     inspect:   inspect,
rlm@79:     toJSON:    toJSON
rlm@79:   });
rlm@79: 
rlm@79:   var CONCAT_ARGUMENTS_BUGGY = (function() {
rlm@79:     return [].concat(arguments)[0][0] !== 1;
rlm@79:   })(1,2)
rlm@79: 
rlm@79:   if (CONCAT_ARGUMENTS_BUGGY) arrayProto.concat = concat;
rlm@79: 
rlm@79:   if (!arrayProto.indexOf) arrayProto.indexOf = indexOf;
rlm@79:   if (!arrayProto.lastIndexOf) arrayProto.lastIndexOf = lastIndexOf;
rlm@79: })();
rlm@79: function $H(object) {
rlm@79:   return new Hash(object);
rlm@79: };
rlm@79: 
rlm@79: var Hash = Class.create(Enumerable, (function() {
rlm@79:   function initialize(object) {
rlm@79:     this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
rlm@79:   }
rlm@79: 
rlm@79:   function _each(iterator) {
rlm@79:     for (var key in this._object) {
rlm@79:       var value = this._object[key], pair = [key, value];
rlm@79:       pair.key = key;
rlm@79:       pair.value = value;
rlm@79:       iterator(pair);
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   function set(key, value) {
rlm@79:     return this._object[key] = value;
rlm@79:   }
rlm@79: 
rlm@79:   function get(key) {
rlm@79:     if (this._object[key] !== Object.prototype[key])
rlm@79:       return this._object[key];
rlm@79:   }
rlm@79: 
rlm@79:   function unset(key) {
rlm@79:     var value = this._object[key];
rlm@79:     delete this._object[key];
rlm@79:     return value;
rlm@79:   }
rlm@79: 
rlm@79:   function toObject() {
rlm@79:     return Object.clone(this._object);
rlm@79:   }
rlm@79: 
rlm@79:   function keys() {
rlm@79:     return this.pluck('key');
rlm@79:   }
rlm@79: 
rlm@79:   function values() {
rlm@79:     return this.pluck('value');
rlm@79:   }
rlm@79: 
rlm@79:   function index(value) {
rlm@79:     var match = this.detect(function(pair) {
rlm@79:       return pair.value === value;
rlm@79:     });
rlm@79:     return match && match.key;
rlm@79:   }
rlm@79: 
rlm@79:   function merge(object) {
rlm@79:     return this.clone().update(object);
rlm@79:   }
rlm@79: 
rlm@79:   function update(object) {
rlm@79:     return new Hash(object).inject(this, function(result, pair) {
rlm@79:       result.set(pair.key, pair.value);
rlm@79:       return result;
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   function toQueryPair(key, value) {
rlm@79:     if (Object.isUndefined(value)) return key;
rlm@79:     return key + '=' + encodeURIComponent(String.interpret(value));
rlm@79:   }
rlm@79: 
rlm@79:   function toQueryString() {
rlm@79:     return this.inject([], function(results, pair) {
rlm@79:       var key = encodeURIComponent(pair.key), values = pair.value;
rlm@79: 
rlm@79:       if (values && typeof values == 'object') {
rlm@79:         if (Object.isArray(values))
rlm@79:           return results.concat(values.map(toQueryPair.curry(key)));
rlm@79:       } else results.push(toQueryPair(key, values));
rlm@79:       return results;
rlm@79:     }).join('&');
rlm@79:   }
rlm@79: 
rlm@79:   function inspect() {
rlm@79:     return '#<Hash:{' + this.map(function(pair) {
rlm@79:       return pair.map(Object.inspect).join(': ');
rlm@79:     }).join(', ') + '}>';
rlm@79:   }
rlm@79: 
rlm@79:   function toJSON() {
rlm@79:     return Object.toJSON(this.toObject());
rlm@79:   }
rlm@79: 
rlm@79:   function clone() {
rlm@79:     return new Hash(this);
rlm@79:   }
rlm@79: 
rlm@79:   return {
rlm@79:     initialize:             initialize,
rlm@79:     _each:                  _each,
rlm@79:     set:                    set,
rlm@79:     get:                    get,
rlm@79:     unset:                  unset,
rlm@79:     toObject:               toObject,
rlm@79:     toTemplateReplacements: toObject,
rlm@79:     keys:                   keys,
rlm@79:     values:                 values,
rlm@79:     index:                  index,
rlm@79:     merge:                  merge,
rlm@79:     update:                 update,
rlm@79:     toQueryString:          toQueryString,
rlm@79:     inspect:                inspect,
rlm@79:     toJSON:                 toJSON,
rlm@79:     clone:                  clone
rlm@79:   };
rlm@79: })());
rlm@79: 
rlm@79: Hash.from = $H;
rlm@79: Object.extend(Number.prototype, (function() {
rlm@79:   function toColorPart() {
rlm@79:     return this.toPaddedString(2, 16);
rlm@79:   }
rlm@79: 
rlm@79:   function succ() {
rlm@79:     return this + 1;
rlm@79:   }
rlm@79: 
rlm@79:   function times(iterator, context) {
rlm@79:     $R(0, this, true).each(iterator, context);
rlm@79:     return this;
rlm@79:   }
rlm@79: 
rlm@79:   function toPaddedString(length, radix) {
rlm@79:     var string = this.toString(radix || 10);
rlm@79:     return '0'.times(length - string.length) + string;
rlm@79:   }
rlm@79: 
rlm@79:   function toJSON() {
rlm@79:     return isFinite(this) ? this.toString() : 'null';
rlm@79:   }
rlm@79: 
rlm@79:   function abs() {
rlm@79:     return Math.abs(this);
rlm@79:   }
rlm@79: 
rlm@79:   function round() {
rlm@79:     return Math.round(this);
rlm@79:   }
rlm@79: 
rlm@79:   function ceil() {
rlm@79:     return Math.ceil(this);
rlm@79:   }
rlm@79: 
rlm@79:   function floor() {
rlm@79:     return Math.floor(this);
rlm@79:   }
rlm@79: 
rlm@79:   return {
rlm@79:     toColorPart:    toColorPart,
rlm@79:     succ:           succ,
rlm@79:     times:          times,
rlm@79:     toPaddedString: toPaddedString,
rlm@79:     toJSON:         toJSON,
rlm@79:     abs:            abs,
rlm@79:     round:          round,
rlm@79:     ceil:           ceil,
rlm@79:     floor:          floor
rlm@79:   };
rlm@79: })());
rlm@79: 
rlm@79: function $R(start, end, exclusive) {
rlm@79:   return new ObjectRange(start, end, exclusive);
rlm@79: }
rlm@79: 
rlm@79: var ObjectRange = Class.create(Enumerable, (function() {
rlm@79:   function initialize(start, end, exclusive) {
rlm@79:     this.start = start;
rlm@79:     this.end = end;
rlm@79:     this.exclusive = exclusive;
rlm@79:   }
rlm@79: 
rlm@79:   function _each(iterator) {
rlm@79:     var value = this.start;
rlm@79:     while (this.include(value)) {
rlm@79:       iterator(value);
rlm@79:       value = value.succ();
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   function include(value) {
rlm@79:     if (value < this.start)
rlm@79:       return false;
rlm@79:     if (this.exclusive)
rlm@79:       return value < this.end;
rlm@79:     return value <= this.end;
rlm@79:   }
rlm@79: 
rlm@79:   return {
rlm@79:     initialize: initialize,
rlm@79:     _each:      _each,
rlm@79:     include:    include
rlm@79:   };
rlm@79: })());
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: var Ajax = {
rlm@79:   getTransport: function() {
rlm@79:     return Try.these(
rlm@79:       function() {return new XMLHttpRequest()},
rlm@79:       function() {return new ActiveXObject('Msxml2.XMLHTTP')},
rlm@79:       function() {return new ActiveXObject('Microsoft.XMLHTTP')}
rlm@79:     ) || false;
rlm@79:   },
rlm@79: 
rlm@79:   activeRequestCount: 0
rlm@79: };
rlm@79: 
rlm@79: Ajax.Responders = {
rlm@79:   responders: [],
rlm@79: 
rlm@79:   _each: function(iterator) {
rlm@79:     this.responders._each(iterator);
rlm@79:   },
rlm@79: 
rlm@79:   register: function(responder) {
rlm@79:     if (!this.include(responder))
rlm@79:       this.responders.push(responder);
rlm@79:   },
rlm@79: 
rlm@79:   unregister: function(responder) {
rlm@79:     this.responders = this.responders.without(responder);
rlm@79:   },
rlm@79: 
rlm@79:   dispatch: function(callback, request, transport, json) {
rlm@79:     this.each(function(responder) {
rlm@79:       if (Object.isFunction(responder[callback])) {
rlm@79:         try {
rlm@79:           responder[callback].apply(responder, [request, transport, json]);
rlm@79:         } catch (e) { }
rlm@79:       }
rlm@79:     });
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: Object.extend(Ajax.Responders, Enumerable);
rlm@79: 
rlm@79: Ajax.Responders.register({
rlm@79:   onCreate:   function() { Ajax.activeRequestCount++ },
rlm@79:   onComplete: function() { Ajax.activeRequestCount-- }
rlm@79: });
rlm@79: Ajax.Base = Class.create({
rlm@79:   initialize: function(options) {
rlm@79:     this.options = {
rlm@79:       method:       'post',
rlm@79:       asynchronous: true,
rlm@79:       contentType:  'application/x-www-form-urlencoded',
rlm@79:       encoding:     'UTF-8',
rlm@79:       parameters:   '',
rlm@79:       evalJSON:     true,
rlm@79:       evalJS:       true
rlm@79:     };
rlm@79:     Object.extend(this.options, options || { });
rlm@79: 
rlm@79:     this.options.method = this.options.method.toLowerCase();
rlm@79: 
rlm@79:     if (Object.isString(this.options.parameters))
rlm@79:       this.options.parameters = this.options.parameters.toQueryParams();
rlm@79:     else if (Object.isHash(this.options.parameters))
rlm@79:       this.options.parameters = this.options.parameters.toObject();
rlm@79:   }
rlm@79: });
rlm@79: Ajax.Request = Class.create(Ajax.Base, {
rlm@79:   _complete: false,
rlm@79: 
rlm@79:   initialize: function($super, url, options) {
rlm@79:     $super(options);
rlm@79:     this.transport = Ajax.getTransport();
rlm@79:     this.request(url);
rlm@79:   },
rlm@79: 
rlm@79:   request: function(url) {
rlm@79:     this.url = url;
rlm@79:     this.method = this.options.method;
rlm@79:     var params = Object.clone(this.options.parameters);
rlm@79: 
rlm@79:     if (!['get', 'post'].include(this.method)) {
rlm@79:       params['_method'] = this.method;
rlm@79:       this.method = 'post';
rlm@79:     }
rlm@79: 
rlm@79:     this.parameters = params;
rlm@79: 
rlm@79:     if (params = Object.toQueryString(params)) {
rlm@79:       if (this.method == 'get')
rlm@79:         this.url += (this.url.include('?') ? '&' : '?') + params;
rlm@79:       else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
rlm@79:         params += '&_=';
rlm@79:     }
rlm@79: 
rlm@79:     try {
rlm@79:       var response = new Ajax.Response(this);
rlm@79:       if (this.options.onCreate) this.options.onCreate(response);
rlm@79:       Ajax.Responders.dispatch('onCreate', this, response);
rlm@79: 
rlm@79:       this.transport.open(this.method.toUpperCase(), this.url,
rlm@79:         this.options.asynchronous);
rlm@79: 
rlm@79:       if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);
rlm@79: 
rlm@79:       this.transport.onreadystatechange = this.onStateChange.bind(this);
rlm@79:       this.setRequestHeaders();
rlm@79: 
rlm@79:       this.body = this.method == 'post' ? (this.options.postBody || params) : null;
rlm@79:       this.transport.send(this.body);
rlm@79: 
rlm@79:       /* Force Firefox to handle ready state 4 for synchronous requests */
rlm@79:       if (!this.options.asynchronous && this.transport.overrideMimeType)
rlm@79:         this.onStateChange();
rlm@79: 
rlm@79:     }
rlm@79:     catch (e) {
rlm@79:       this.dispatchException(e);
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   onStateChange: function() {
rlm@79:     var readyState = this.transport.readyState;
rlm@79:     if (readyState > 1 && !((readyState == 4) && this._complete))
rlm@79:       this.respondToReadyState(this.transport.readyState);
rlm@79:   },
rlm@79: 
rlm@79:   setRequestHeaders: function() {
rlm@79:     var headers = {
rlm@79:       'X-Requested-With': 'XMLHttpRequest',
rlm@79:       'X-Prototype-Version': Prototype.Version,
rlm@79:       'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
rlm@79:     };
rlm@79: 
rlm@79:     if (this.method == 'post') {
rlm@79:       headers['Content-type'] = this.options.contentType +
rlm@79:         (this.options.encoding ? '; charset=' + this.options.encoding : '');
rlm@79: 
rlm@79:       /* Force "Connection: close" for older Mozilla browsers to work
rlm@79:        * around a bug where XMLHttpRequest sends an incorrect
rlm@79:        * Content-length header. See Mozilla Bugzilla #246651.
rlm@79:        */
rlm@79:       if (this.transport.overrideMimeType &&
rlm@79:           (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
rlm@79:             headers['Connection'] = 'close';
rlm@79:     }
rlm@79: 
rlm@79:     if (typeof this.options.requestHeaders == 'object') {
rlm@79:       var extras = this.options.requestHeaders;
rlm@79: 
rlm@79:       if (Object.isFunction(extras.push))
rlm@79:         for (var i = 0, length = extras.length; i < length; i += 2)
rlm@79:           headers[extras[i]] = extras[i+1];
rlm@79:       else
rlm@79:         $H(extras).each(function(pair) { headers[pair.key] = pair.value });
rlm@79:     }
rlm@79: 
rlm@79:     for (var name in headers)
rlm@79:       this.transport.setRequestHeader(name, headers[name]);
rlm@79:   },
rlm@79: 
rlm@79:   success: function() {
rlm@79:     var status = this.getStatus();
rlm@79:     return !status || (status >= 200 && status < 300);
rlm@79:   },
rlm@79: 
rlm@79:   getStatus: function() {
rlm@79:     try {
rlm@79:       return this.transport.status || 0;
rlm@79:     } catch (e) { return 0 }
rlm@79:   },
rlm@79: 
rlm@79:   respondToReadyState: function(readyState) {
rlm@79:     var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);
rlm@79: 
rlm@79:     if (state == 'Complete') {
rlm@79:       try {
rlm@79:         this._complete = true;
rlm@79:         (this.options['on' + response.status]
rlm@79:          || this.options['on' + (this.success() ? 'Success' : 'Failure')]
rlm@79:          || Prototype.emptyFunction)(response, response.headerJSON);
rlm@79:       } catch (e) {
rlm@79:         this.dispatchException(e);
rlm@79:       }
rlm@79: 
rlm@79:       var contentType = response.getHeader('Content-type');
rlm@79:       if (this.options.evalJS == 'force'
rlm@79:           || (this.options.evalJS && this.isSameOrigin() && contentType
rlm@79:           && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
rlm@79:         this.evalResponse();
rlm@79:     }
rlm@79: 
rlm@79:     try {
rlm@79:       (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
rlm@79:       Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
rlm@79:     } catch (e) {
rlm@79:       this.dispatchException(e);
rlm@79:     }
rlm@79: 
rlm@79:     if (state == 'Complete') {
rlm@79:       this.transport.onreadystatechange = Prototype.emptyFunction;
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   isSameOrigin: function() {
rlm@79:     var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
rlm@79:     return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
rlm@79:       protocol: location.protocol,
rlm@79:       domain: document.domain,
rlm@79:       port: location.port ? ':' + location.port : ''
rlm@79:     }));
rlm@79:   },
rlm@79: 
rlm@79:   getHeader: function(name) {
rlm@79:     try {
rlm@79:       return this.transport.getResponseHeader(name) || null;
rlm@79:     } catch (e) { return null; }
rlm@79:   },
rlm@79: 
rlm@79:   evalResponse: function() {
rlm@79:     try {
rlm@79:       return eval((this.transport.responseText || '').unfilterJSON());
rlm@79:     } catch (e) {
rlm@79:       this.dispatchException(e);
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   dispatchException: function(exception) {
rlm@79:     (this.options.onException || Prototype.emptyFunction)(this, exception);
rlm@79:     Ajax.Responders.dispatch('onException', this, exception);
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: Ajax.Request.Events =
rlm@79:   ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: Ajax.Response = Class.create({
rlm@79:   initialize: function(request){
rlm@79:     this.request = request;
rlm@79:     var transport  = this.transport  = request.transport,
rlm@79:         readyState = this.readyState = transport.readyState;
rlm@79: 
rlm@79:     if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
rlm@79:       this.status       = this.getStatus();
rlm@79:       this.statusText   = this.getStatusText();
rlm@79:       this.responseText = String.interpret(transport.responseText);
rlm@79:       this.headerJSON   = this._getHeaderJSON();
rlm@79:     }
rlm@79: 
rlm@79:     if(readyState == 4) {
rlm@79:       var xml = transport.responseXML;
rlm@79:       this.responseXML  = Object.isUndefined(xml) ? null : xml;
rlm@79:       this.responseJSON = this._getResponseJSON();
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   status:      0,
rlm@79: 
rlm@79:   statusText: '',
rlm@79: 
rlm@79:   getStatus: Ajax.Request.prototype.getStatus,
rlm@79: 
rlm@79:   getStatusText: function() {
rlm@79:     try {
rlm@79:       return this.transport.statusText || '';
rlm@79:     } catch (e) { return '' }
rlm@79:   },
rlm@79: 
rlm@79:   getHeader: Ajax.Request.prototype.getHeader,
rlm@79: 
rlm@79:   getAllHeaders: function() {
rlm@79:     try {
rlm@79:       return this.getAllResponseHeaders();
rlm@79:     } catch (e) { return null }
rlm@79:   },
rlm@79: 
rlm@79:   getResponseHeader: function(name) {
rlm@79:     return this.transport.getResponseHeader(name);
rlm@79:   },
rlm@79: 
rlm@79:   getAllResponseHeaders: function() {
rlm@79:     return this.transport.getAllResponseHeaders();
rlm@79:   },
rlm@79: 
rlm@79:   _getHeaderJSON: function() {
rlm@79:     var json = this.getHeader('X-JSON');
rlm@79:     if (!json) return null;
rlm@79:     json = decodeURIComponent(escape(json));
rlm@79:     try {
rlm@79:       return json.evalJSON(this.request.options.sanitizeJSON ||
rlm@79:         !this.request.isSameOrigin());
rlm@79:     } catch (e) {
rlm@79:       this.request.dispatchException(e);
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   _getResponseJSON: function() {
rlm@79:     var options = this.request.options;
rlm@79:     if (!options.evalJSON || (options.evalJSON != 'force' &&
rlm@79:       !(this.getHeader('Content-type') || '').include('application/json')) ||
rlm@79:         this.responseText.blank())
rlm@79:           return null;
rlm@79:     try {
rlm@79:       return this.responseText.evalJSON(options.sanitizeJSON ||
rlm@79:         !this.request.isSameOrigin());
rlm@79:     } catch (e) {
rlm@79:       this.request.dispatchException(e);
rlm@79:     }
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: Ajax.Updater = Class.create(Ajax.Request, {
rlm@79:   initialize: function($super, container, url, options) {
rlm@79:     this.container = {
rlm@79:       success: (container.success || container),
rlm@79:       failure: (container.failure || (container.success ? null : container))
rlm@79:     };
rlm@79: 
rlm@79:     options = Object.clone(options);
rlm@79:     var onComplete = options.onComplete;
rlm@79:     options.onComplete = (function(response, json) {
rlm@79:       this.updateContent(response.responseText);
rlm@79:       if (Object.isFunction(onComplete)) onComplete(response, json);
rlm@79:     }).bind(this);
rlm@79: 
rlm@79:     $super(url, options);
rlm@79:   },
rlm@79: 
rlm@79:   updateContent: function(responseText) {
rlm@79:     var receiver = this.container[this.success() ? 'success' : 'failure'],
rlm@79:         options = this.options;
rlm@79: 
rlm@79:     if (!options.evalScripts) responseText = responseText.stripScripts();
rlm@79: 
rlm@79:     if (receiver = $(receiver)) {
rlm@79:       if (options.insertion) {
rlm@79:         if (Object.isString(options.insertion)) {
rlm@79:           var insertion = { }; insertion[options.insertion] = responseText;
rlm@79:           receiver.insert(insertion);
rlm@79:         }
rlm@79:         else options.insertion(receiver, responseText);
rlm@79:       }
rlm@79:       else receiver.update(responseText);
rlm@79:     }
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
rlm@79:   initialize: function($super, container, url, options) {
rlm@79:     $super(options);
rlm@79:     this.onComplete = this.options.onComplete;
rlm@79: 
rlm@79:     this.frequency = (this.options.frequency || 2);
rlm@79:     this.decay = (this.options.decay || 1);
rlm@79: 
rlm@79:     this.updater = { };
rlm@79:     this.container = container;
rlm@79:     this.url = url;
rlm@79: 
rlm@79:     this.start();
rlm@79:   },
rlm@79: 
rlm@79:   start: function() {
rlm@79:     this.options.onComplete = this.updateComplete.bind(this);
rlm@79:     this.onTimerEvent();
rlm@79:   },
rlm@79: 
rlm@79:   stop: function() {
rlm@79:     this.updater.options.onComplete = undefined;
rlm@79:     clearTimeout(this.timer);
rlm@79:     (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
rlm@79:   },
rlm@79: 
rlm@79:   updateComplete: function(response) {
rlm@79:     if (this.options.decay) {
rlm@79:       this.decay = (response.responseText == this.lastText ?
rlm@79:         this.decay * this.options.decay : 1);
rlm@79: 
rlm@79:       this.lastText = response.responseText;
rlm@79:     }
rlm@79:     this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
rlm@79:   },
rlm@79: 
rlm@79:   onTimerEvent: function() {
rlm@79:     this.updater = new Ajax.Updater(this.container, this.url, this.options);
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: 
rlm@79: 
rlm@79: function $(element) {
rlm@79:   if (arguments.length > 1) {
rlm@79:     for (var i = 0, elements = [], length = arguments.length; i < length; i++)
rlm@79:       elements.push($(arguments[i]));
rlm@79:     return elements;
rlm@79:   }
rlm@79:   if (Object.isString(element))
rlm@79:     element = document.getElementById(element);
rlm@79:   return Element.extend(element);
rlm@79: }
rlm@79: 
rlm@79: if (Prototype.BrowserFeatures.XPath) {
rlm@79:   document._getElementsByXPath = function(expression, parentElement) {
rlm@79:     var results = [];
rlm@79:     var query = document.evaluate(expression, $(parentElement) || document,
rlm@79:       null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
rlm@79:     for (var i = 0, length = query.snapshotLength; i < length; i++)
rlm@79:       results.push(Element.extend(query.snapshotItem(i)));
rlm@79:     return results;
rlm@79:   };
rlm@79: }
rlm@79: 
rlm@79: /*--------------------------------------------------------------------------*/
rlm@79: 
rlm@79: if (!window.Node) var Node = { };
rlm@79: 
rlm@79: if (!Node.ELEMENT_NODE) {
rlm@79:   Object.extend(Node, {
rlm@79:     ELEMENT_NODE: 1,
rlm@79:     ATTRIBUTE_NODE: 2,
rlm@79:     TEXT_NODE: 3,
rlm@79:     CDATA_SECTION_NODE: 4,
rlm@79:     ENTITY_REFERENCE_NODE: 5,
rlm@79:     ENTITY_NODE: 6,
rlm@79:     PROCESSING_INSTRUCTION_NODE: 7,
rlm@79:     COMMENT_NODE: 8,
rlm@79:     DOCUMENT_NODE: 9,
rlm@79:     DOCUMENT_TYPE_NODE: 10,
rlm@79:     DOCUMENT_FRAGMENT_NODE: 11,
rlm@79:     NOTATION_NODE: 12
rlm@79:   });
rlm@79: }
rlm@79: 
rlm@79: 
rlm@79: (function(global) {
rlm@79: 
rlm@79:   var SETATTRIBUTE_IGNORES_NAME = (function(){
rlm@79:     var elForm = document.createElement("form");
rlm@79:     var elInput = document.createElement("input");
rlm@79:     var root = document.documentElement;
rlm@79:     elInput.setAttribute("name", "test");
rlm@79:     elForm.appendChild(elInput);
rlm@79:     root.appendChild(elForm);
rlm@79:     var isBuggy = elForm.elements
rlm@79:       ? (typeof elForm.elements.test == "undefined")
rlm@79:       : null;
rlm@79:     root.removeChild(elForm);
rlm@79:     elForm = elInput = null;
rlm@79:     return isBuggy;
rlm@79:   })();
rlm@79: 
rlm@79:   var element = global.Element;
rlm@79:   global.Element = function(tagName, attributes) {
rlm@79:     attributes = attributes || { };
rlm@79:     tagName = tagName.toLowerCase();
rlm@79:     var cache = Element.cache;
rlm@79:     if (SETATTRIBUTE_IGNORES_NAME && attributes.name) {
rlm@79:       tagName = '<' + tagName + ' name="' + attributes.name + '">';
rlm@79:       delete attributes.name;
rlm@79:       return Element.writeAttribute(document.createElement(tagName), attributes);
rlm@79:     }
rlm@79:     if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
rlm@79:     return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
rlm@79:   };
rlm@79:   Object.extend(global.Element, element || { });
rlm@79:   if (element) global.Element.prototype = element.prototype;
rlm@79: })(this);
rlm@79: 
rlm@79: Element.cache = { };
rlm@79: Element.idCounter = 1;
rlm@79: 
rlm@79: Element.Methods = {
rlm@79:   visible: function(element) {
rlm@79:     return $(element).style.display != 'none';
rlm@79:   },
rlm@79: 
rlm@79:   toggle: function(element) {
rlm@79:     element = $(element);
rlm@79:     Element[Element.visible(element) ? 'hide' : 'show'](element);
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79: 
rlm@79:   hide: function(element) {
rlm@79:     element = $(element);
rlm@79:     element.style.display = 'none';
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   show: function(element) {
rlm@79:     element = $(element);
rlm@79:     element.style.display = '';
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   remove: function(element) {
rlm@79:     element = $(element);
rlm@79:     element.parentNode.removeChild(element);
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   update: (function(){
rlm@79: 
rlm@79:     var SELECT_ELEMENT_INNERHTML_BUGGY = (function(){
rlm@79:       var el = document.createElement("select"),
rlm@79:           isBuggy = true;
rlm@79:       el.innerHTML = "<option value=\"test\">test</option>";
rlm@79:       if (el.options && el.options[0]) {
rlm@79:         isBuggy = el.options[0].nodeName.toUpperCase() !== "OPTION";
rlm@79:       }
rlm@79:       el = null;
rlm@79:       return isBuggy;
rlm@79:     })();
rlm@79: 
rlm@79:     var TABLE_ELEMENT_INNERHTML_BUGGY = (function(){
rlm@79:       try {
rlm@79:         var el = document.createElement("table");
rlm@79:         if (el && el.tBodies) {
rlm@79:           el.innerHTML = "<tbody><tr><td>test</td></tr></tbody>";
rlm@79:           var isBuggy = typeof el.tBodies[0] == "undefined";
rlm@79:           el = null;
rlm@79:           return isBuggy;
rlm@79:         }
rlm@79:       } catch (e) {
rlm@79:         return true;
rlm@79:       }
rlm@79:     })();
rlm@79: 
rlm@79:     var SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING = (function () {
rlm@79:       var s = document.createElement("script"),
rlm@79:           isBuggy = false;
rlm@79:       try {
rlm@79:         s.appendChild(document.createTextNode(""));
rlm@79:         isBuggy = !s.firstChild ||
rlm@79:           s.firstChild && s.firstChild.nodeType !== 3;
rlm@79:       } catch (e) {
rlm@79:         isBuggy = true;
rlm@79:       }
rlm@79:       s = null;
rlm@79:       return isBuggy;
rlm@79:     })();
rlm@79: 
rlm@79:     function update(element, content) {
rlm@79:       element = $(element);
rlm@79: 
rlm@79:       if (content && content.toElement)
rlm@79:         content = content.toElement();
rlm@79: 
rlm@79:       if (Object.isElement(content))
rlm@79:         return element.update().insert(content);
rlm@79: 
rlm@79:       content = Object.toHTML(content);
rlm@79: 
rlm@79:       var tagName = element.tagName.toUpperCase();
rlm@79: 
rlm@79:       if (tagName === 'SCRIPT' && SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING) {
rlm@79:         element.text = content;
rlm@79:         return element;
rlm@79:       }
rlm@79: 
rlm@79:       if (SELECT_ELEMENT_INNERHTML_BUGGY || TABLE_ELEMENT_INNERHTML_BUGGY) {
rlm@79:         if (tagName in Element._insertionTranslations.tags) {
rlm@79:           while (element.firstChild) {
rlm@79:             element.removeChild(element.firstChild);
rlm@79:           }
rlm@79:           Element._getContentFromAnonymousElement(tagName, content.stripScripts())
rlm@79:             .each(function(node) {
rlm@79:               element.appendChild(node)
rlm@79:             });
rlm@79:         }
rlm@79:         else {
rlm@79:           element.innerHTML = content.stripScripts();
rlm@79:         }
rlm@79:       }
rlm@79:       else {
rlm@79:         element.innerHTML = content.stripScripts();
rlm@79:       }
rlm@79: 
rlm@79:       content.evalScripts.bind(content).defer();
rlm@79:       return element;
rlm@79:     }
rlm@79: 
rlm@79:     return update;
rlm@79:   })(),
rlm@79: 
rlm@79:   replace: function(element, content) {
rlm@79:     element = $(element);
rlm@79:     if (content && content.toElement) content = content.toElement();
rlm@79:     else if (!Object.isElement(content)) {
rlm@79:       content = Object.toHTML(content);
rlm@79:       var range = element.ownerDocument.createRange();
rlm@79:       range.selectNode(element);
rlm@79:       content.evalScripts.bind(content).defer();
rlm@79:       content = range.createContextualFragment(content.stripScripts());
rlm@79:     }
rlm@79:     element.parentNode.replaceChild(content, element);
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   insert: function(element, insertions) {
rlm@79:     element = $(element);
rlm@79: 
rlm@79:     if (Object.isString(insertions) || Object.isNumber(insertions) ||
rlm@79:         Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
rlm@79:           insertions = {bottom:insertions};
rlm@79: 
rlm@79:     var content, insert, tagName, childNodes;
rlm@79: 
rlm@79:     for (var position in insertions) {
rlm@79:       content  = insertions[position];
rlm@79:       position = position.toLowerCase();
rlm@79:       insert = Element._insertionTranslations[position];
rlm@79: 
rlm@79:       if (content && content.toElement) content = content.toElement();
rlm@79:       if (Object.isElement(content)) {
rlm@79:         insert(element, content);
rlm@79:         continue;
rlm@79:       }
rlm@79: 
rlm@79:       content = Object.toHTML(content);
rlm@79: 
rlm@79:       tagName = ((position == 'before' || position == 'after')
rlm@79:         ? element.parentNode : element).tagName.toUpperCase();
rlm@79: 
rlm@79:       childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
rlm@79: 
rlm@79:       if (position == 'top' || position == 'after') childNodes.reverse();
rlm@79:       childNodes.each(insert.curry(element));
rlm@79: 
rlm@79:       content.evalScripts.bind(content).defer();
rlm@79:     }
rlm@79: 
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   wrap: function(element, wrapper, attributes) {
rlm@79:     element = $(element);
rlm@79:     if (Object.isElement(wrapper))
rlm@79:       $(wrapper).writeAttribute(attributes || { });
rlm@79:     else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
rlm@79:     else wrapper = new Element('div', wrapper);
rlm@79:     if (element.parentNode)
rlm@79:       element.parentNode.replaceChild(wrapper, element);
rlm@79:     wrapper.appendChild(element);
rlm@79:     return wrapper;
rlm@79:   },
rlm@79: 
rlm@79:   inspect: function(element) {
rlm@79:     element = $(element);
rlm@79:     var result = '<' + element.tagName.toLowerCase();
rlm@79:     $H({'id': 'id', 'className': 'class'}).each(function(pair) {
rlm@79:       var property = pair.first(), attribute = pair.last();
rlm@79:       var value = (element[property] || '').toString();
rlm@79:       if (value) result += ' ' + attribute + '=' + value.inspect(true);
rlm@79:     });
rlm@79:     return result + '>';
rlm@79:   },
rlm@79: 
rlm@79:   recursivelyCollect: function(element, property) {
rlm@79:     element = $(element);
rlm@79:     var elements = [];
rlm@79:     while (element = element[property])
rlm@79:       if (element.nodeType == 1)
rlm@79:         elements.push(Element.extend(element));
rlm@79:     return elements;
rlm@79:   },
rlm@79: 
rlm@79:   ancestors: function(element) {
rlm@79:     return Element.recursivelyCollect(element, 'parentNode');
rlm@79:   },
rlm@79: 
rlm@79:   descendants: function(element) {
rlm@79:     return Element.select(element, "*");
rlm@79:   },
rlm@79: 
rlm@79:   firstDescendant: function(element) {
rlm@79:     element = $(element).firstChild;
rlm@79:     while (element && element.nodeType != 1) element = element.nextSibling;
rlm@79:     return $(element);
rlm@79:   },
rlm@79: 
rlm@79:   immediateDescendants: function(element) {
rlm@79:     if (!(element = $(element).firstChild)) return [];
rlm@79:     while (element && element.nodeType != 1) element = element.nextSibling;
rlm@79:     if (element) return [element].concat($(element).nextSiblings());
rlm@79:     return [];
rlm@79:   },
rlm@79: 
rlm@79:   previousSiblings: function(element) {
rlm@79:     return Element.recursivelyCollect(element, 'previousSibling');
rlm@79:   },
rlm@79: 
rlm@79:   nextSiblings: function(element) {
rlm@79:     return Element.recursivelyCollect(element, 'nextSibling');
rlm@79:   },
rlm@79: 
rlm@79:   siblings: function(element) {
rlm@79:     element = $(element);
rlm@79:     return Element.previousSiblings(element).reverse()
rlm@79:       .concat(Element.nextSiblings(element));
rlm@79:   },
rlm@79: 
rlm@79:   match: function(element, selector) {
rlm@79:     if (Object.isString(selector))
rlm@79:       selector = new Selector(selector);
rlm@79:     return selector.match($(element));
rlm@79:   },
rlm@79: 
rlm@79:   up: function(element, expression, index) {
rlm@79:     element = $(element);
rlm@79:     if (arguments.length == 1) return $(element.parentNode);
rlm@79:     var ancestors = Element.ancestors(element);
rlm@79:     return Object.isNumber(expression) ? ancestors[expression] :
rlm@79:       Selector.findElement(ancestors, expression, index);
rlm@79:   },
rlm@79: 
rlm@79:   down: function(element, expression, index) {
rlm@79:     element = $(element);
rlm@79:     if (arguments.length == 1) return Element.firstDescendant(element);
rlm@79:     return Object.isNumber(expression) ? Element.descendants(element)[expression] :
rlm@79:       Element.select(element, expression)[index || 0];
rlm@79:   },
rlm@79: 
rlm@79:   previous: function(element, expression, index) {
rlm@79:     element = $(element);
rlm@79:     if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
rlm@79:     var previousSiblings = Element.previousSiblings(element);
rlm@79:     return Object.isNumber(expression) ? previousSiblings[expression] :
rlm@79:       Selector.findElement(previousSiblings, expression, index);
rlm@79:   },
rlm@79: 
rlm@79:   next: function(element, expression, index) {
rlm@79:     element = $(element);
rlm@79:     if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
rlm@79:     var nextSiblings = Element.nextSiblings(element);
rlm@79:     return Object.isNumber(expression) ? nextSiblings[expression] :
rlm@79:       Selector.findElement(nextSiblings, expression, index);
rlm@79:   },
rlm@79: 
rlm@79: 
rlm@79:   select: function(element) {
rlm@79:     var args = Array.prototype.slice.call(arguments, 1);
rlm@79:     return Selector.findChildElements(element, args);
rlm@79:   },
rlm@79: 
rlm@79:   adjacent: function(element) {
rlm@79:     var args = Array.prototype.slice.call(arguments, 1);
rlm@79:     return Selector.findChildElements(element.parentNode, args).without(element);
rlm@79:   },
rlm@79: 
rlm@79:   identify: function(element) {
rlm@79:     element = $(element);
rlm@79:     var id = Element.readAttribute(element, 'id');
rlm@79:     if (id) return id;
rlm@79:     do { id = 'anonymous_element_' + Element.idCounter++ } while ($(id));
rlm@79:     Element.writeAttribute(element, 'id', id);
rlm@79:     return id;
rlm@79:   },
rlm@79: 
rlm@79:   readAttribute: function(element, name) {
rlm@79:     element = $(element);
rlm@79:     if (Prototype.Browser.IE) {
rlm@79:       var t = Element._attributeTranslations.read;
rlm@79:       if (t.values[name]) return t.values[name](element, name);
rlm@79:       if (t.names[name]) name = t.names[name];
rlm@79:       if (name.include(':')) {
rlm@79:         return (!element.attributes || !element.attributes[name]) ? null :
rlm@79:          element.attributes[name].value;
rlm@79:       }
rlm@79:     }
rlm@79:     return element.getAttribute(name);
rlm@79:   },
rlm@79: 
rlm@79:   writeAttribute: function(element, name, value) {
rlm@79:     element = $(element);
rlm@79:     var attributes = { }, t = Element._attributeTranslations.write;
rlm@79: 
rlm@79:     if (typeof name == 'object') attributes = name;
rlm@79:     else attributes[name] = Object.isUndefined(value) ? true : value;
rlm@79: 
rlm@79:     for (var attr in attributes) {
rlm@79:       name = t.names[attr] || attr;
rlm@79:       value = attributes[attr];
rlm@79:       if (t.values[attr]) name = t.values[attr](element, value);
rlm@79:       if (value === false || value === null)
rlm@79:         element.removeAttribute(name);
rlm@79:       else if (value === true)
rlm@79:         element.setAttribute(name, name);
rlm@79:       else element.setAttribute(name, value);
rlm@79:     }
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   getHeight: function(element) {
rlm@79:     return Element.getDimensions(element).height;
rlm@79:   },
rlm@79: 
rlm@79:   getWidth: function(element) {
rlm@79:     return Element.getDimensions(element).width;
rlm@79:   },
rlm@79: 
rlm@79:   classNames: function(element) {
rlm@79:     return new Element.ClassNames(element);
rlm@79:   },
rlm@79: 
rlm@79:   hasClassName: function(element, className) {
rlm@79:     if (!(element = $(element))) return;
rlm@79:     var elementClassName = element.className;
rlm@79:     return (elementClassName.length > 0 && (elementClassName == className ||
rlm@79:       new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
rlm@79:   },
rlm@79: 
rlm@79:   addClassName: function(element, className) {
rlm@79:     if (!(element = $(element))) return;
rlm@79:     if (!Element.hasClassName(element, className))
rlm@79:       element.className += (element.className ? ' ' : '') + className;
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   removeClassName: function(element, className) {
rlm@79:     if (!(element = $(element))) return;
rlm@79:     element.className = element.className.replace(
rlm@79:       new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   toggleClassName: function(element, className) {
rlm@79:     if (!(element = $(element))) return;
rlm@79:     return Element[Element.hasClassName(element, className) ?
rlm@79:       'removeClassName' : 'addClassName'](element, className);
rlm@79:   },
rlm@79: 
rlm@79:   cleanWhitespace: function(element) {
rlm@79:     element = $(element);
rlm@79:     var node = element.firstChild;
rlm@79:     while (node) {
rlm@79:       var nextNode = node.nextSibling;
rlm@79:       if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
rlm@79:         element.removeChild(node);
rlm@79:       node = nextNode;
rlm@79:     }
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   empty: function(element) {
rlm@79:     return $(element).innerHTML.blank();
rlm@79:   },
rlm@79: 
rlm@79:   descendantOf: function(element, ancestor) {
rlm@79:     element = $(element), ancestor = $(ancestor);
rlm@79: 
rlm@79:     if (element.compareDocumentPosition)
rlm@79:       return (element.compareDocumentPosition(ancestor) & 8) === 8;
rlm@79: 
rlm@79:     if (ancestor.contains)
rlm@79:       return ancestor.contains(element) && ancestor !== element;
rlm@79: 
rlm@79:     while (element = element.parentNode)
rlm@79:       if (element == ancestor) return true;
rlm@79: 
rlm@79:     return false;
rlm@79:   },
rlm@79: 
rlm@79:   scrollTo: function(element) {
rlm@79:     element = $(element);
rlm@79:     var pos = Element.cumulativeOffset(element);
rlm@79:     window.scrollTo(pos[0], pos[1]);
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   getStyle: function(element, style) {
rlm@79:     element = $(element);
rlm@79:     style = style == 'float' ? 'cssFloat' : style.camelize();
rlm@79:     var value = element.style[style];
rlm@79:     if (!value || value == 'auto') {
rlm@79:       var css = document.defaultView.getComputedStyle(element, null);
rlm@79:       value = css ? css[style] : null;
rlm@79:     }
rlm@79:     if (style == 'opacity') return value ? parseFloat(value) : 1.0;
rlm@79:     return value == 'auto' ? null : value;
rlm@79:   },
rlm@79: 
rlm@79:   getOpacity: function(element) {
rlm@79:     return $(element).getStyle('opacity');
rlm@79:   },
rlm@79: 
rlm@79:   setStyle: function(element, styles) {
rlm@79:     element = $(element);
rlm@79:     var elementStyle = element.style, match;
rlm@79:     if (Object.isString(styles)) {
rlm@79:       element.style.cssText += ';' + styles;
rlm@79:       return styles.include('opacity') ?
rlm@79:         element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
rlm@79:     }
rlm@79:     for (var property in styles)
rlm@79:       if (property == 'opacity') element.setOpacity(styles[property]);
rlm@79:       else
rlm@79:         elementStyle[(property == 'float' || property == 'cssFloat') ?
rlm@79:           (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
rlm@79:             property] = styles[property];
rlm@79: 
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   setOpacity: function(element, value) {
rlm@79:     element = $(element);
rlm@79:     element.style.opacity = (value == 1 || value === '') ? '' :
rlm@79:       (value < 0.00001) ? 0 : value;
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   getDimensions: function(element) {
rlm@79:     element = $(element);
rlm@79:     var display = Element.getStyle(element, 'display');
rlm@79:     if (display != 'none' && display != null) // Safari bug
rlm@79:       return {width: element.offsetWidth, height: element.offsetHeight};
rlm@79: 
rlm@79:     var els = element.style;
rlm@79:     var originalVisibility = els.visibility;
rlm@79:     var originalPosition = els.position;
rlm@79:     var originalDisplay = els.display;
rlm@79:     els.visibility = 'hidden';
rlm@79:     if (originalPosition != 'fixed') // Switching fixed to absolute causes issues in Safari
rlm@79:       els.position = 'absolute';
rlm@79:     els.display = 'block';
rlm@79:     var originalWidth = element.clientWidth;
rlm@79:     var originalHeight = element.clientHeight;
rlm@79:     els.display = originalDisplay;
rlm@79:     els.position = originalPosition;
rlm@79:     els.visibility = originalVisibility;
rlm@79:     return {width: originalWidth, height: originalHeight};
rlm@79:   },
rlm@79: 
rlm@79:   makePositioned: function(element) {
rlm@79:     element = $(element);
rlm@79:     var pos = Element.getStyle(element, 'position');
rlm@79:     if (pos == 'static' || !pos) {
rlm@79:       element._madePositioned = true;
rlm@79:       element.style.position = 'relative';
rlm@79:       if (Prototype.Browser.Opera) {
rlm@79:         element.style.top = 0;
rlm@79:         element.style.left = 0;
rlm@79:       }
rlm@79:     }
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   undoPositioned: function(element) {
rlm@79:     element = $(element);
rlm@79:     if (element._madePositioned) {
rlm@79:       element._madePositioned = undefined;
rlm@79:       element.style.position =
rlm@79:         element.style.top =
rlm@79:         element.style.left =
rlm@79:         element.style.bottom =
rlm@79:         element.style.right = '';
rlm@79:     }
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   makeClipping: function(element) {
rlm@79:     element = $(element);
rlm@79:     if (element._overflow) return element;
rlm@79:     element._overflow = Element.getStyle(element, 'overflow') || 'auto';
rlm@79:     if (element._overflow !== 'hidden')
rlm@79:       element.style.overflow = 'hidden';
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   undoClipping: function(element) {
rlm@79:     element = $(element);
rlm@79:     if (!element._overflow) return element;
rlm@79:     element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
rlm@79:     element._overflow = null;
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   cumulativeOffset: function(element) {
rlm@79:     var valueT = 0, valueL = 0;
rlm@79:     do {
rlm@79:       valueT += element.offsetTop  || 0;
rlm@79:       valueL += element.offsetLeft || 0;
rlm@79:       element = element.offsetParent;
rlm@79:     } while (element);
rlm@79:     return Element._returnOffset(valueL, valueT);
rlm@79:   },
rlm@79: 
rlm@79:   positionedOffset: function(element) {
rlm@79:     var valueT = 0, valueL = 0;
rlm@79:     do {
rlm@79:       valueT += element.offsetTop  || 0;
rlm@79:       valueL += element.offsetLeft || 0;
rlm@79:       element = element.offsetParent;
rlm@79:       if (element) {
rlm@79:         if (element.tagName.toUpperCase() == 'BODY') break;
rlm@79:         var p = Element.getStyle(element, 'position');
rlm@79:         if (p !== 'static') break;
rlm@79:       }
rlm@79:     } while (element);
rlm@79:     return Element._returnOffset(valueL, valueT);
rlm@79:   },
rlm@79: 
rlm@79:   absolutize: function(element) {
rlm@79:     element = $(element);
rlm@79:     if (Element.getStyle(element, 'position') == 'absolute') return element;
rlm@79: 
rlm@79:     var offsets = Element.positionedOffset(element);
rlm@79:     var top     = offsets[1];
rlm@79:     var left    = offsets[0];
rlm@79:     var width   = element.clientWidth;
rlm@79:     var height  = element.clientHeight;
rlm@79: 
rlm@79:     element._originalLeft   = left - parseFloat(element.style.left  || 0);
rlm@79:     element._originalTop    = top  - parseFloat(element.style.top || 0);
rlm@79:     element._originalWidth  = element.style.width;
rlm@79:     element._originalHeight = element.style.height;
rlm@79: 
rlm@79:     element.style.position = 'absolute';
rlm@79:     element.style.top    = top + 'px';
rlm@79:     element.style.left   = left + 'px';
rlm@79:     element.style.width  = width + 'px';
rlm@79:     element.style.height = height + 'px';
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   relativize: function(element) {
rlm@79:     element = $(element);
rlm@79:     if (Element.getStyle(element, 'position') == 'relative') return element;
rlm@79: 
rlm@79:     element.style.position = 'relative';
rlm@79:     var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
rlm@79:     var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
rlm@79: 
rlm@79:     element.style.top    = top + 'px';
rlm@79:     element.style.left   = left + 'px';
rlm@79:     element.style.height = element._originalHeight;
rlm@79:     element.style.width  = element._originalWidth;
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   cumulativeScrollOffset: function(element) {
rlm@79:     var valueT = 0, valueL = 0;
rlm@79:     do {
rlm@79:       valueT += element.scrollTop  || 0;
rlm@79:       valueL += element.scrollLeft || 0;
rlm@79:       element = element.parentNode;
rlm@79:     } while (element);
rlm@79:     return Element._returnOffset(valueL, valueT);
rlm@79:   },
rlm@79: 
rlm@79:   getOffsetParent: function(element) {
rlm@79:     if (element.offsetParent) return $(element.offsetParent);
rlm@79:     if (element == document.body) return $(element);
rlm@79: 
rlm@79:     while ((element = element.parentNode) && element != document.body)
rlm@79:       if (Element.getStyle(element, 'position') != 'static')
rlm@79:         return $(element);
rlm@79: 
rlm@79:     return $(document.body);
rlm@79:   },
rlm@79: 
rlm@79:   viewportOffset: function(forElement) {
rlm@79:     var valueT = 0, valueL = 0;
rlm@79: 
rlm@79:     var element = forElement;
rlm@79:     do {
rlm@79:       valueT += element.offsetTop  || 0;
rlm@79:       valueL += element.offsetLeft || 0;
rlm@79: 
rlm@79:       if (element.offsetParent == document.body &&
rlm@79:         Element.getStyle(element, 'position') == 'absolute') break;
rlm@79: 
rlm@79:     } while (element = element.offsetParent);
rlm@79: 
rlm@79:     element = forElement;
rlm@79:     do {
rlm@79:       if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
rlm@79:         valueT -= element.scrollTop  || 0;
rlm@79:         valueL -= element.scrollLeft || 0;
rlm@79:       }
rlm@79:     } while (element = element.parentNode);
rlm@79: 
rlm@79:     return Element._returnOffset(valueL, valueT);
rlm@79:   },
rlm@79: 
rlm@79:   clonePosition: function(element, source) {
rlm@79:     var options = Object.extend({
rlm@79:       setLeft:    true,
rlm@79:       setTop:     true,
rlm@79:       setWidth:   true,
rlm@79:       setHeight:  true,
rlm@79:       offsetTop:  0,
rlm@79:       offsetLeft: 0
rlm@79:     }, arguments[2] || { });
rlm@79: 
rlm@79:     source = $(source);
rlm@79:     var p = Element.viewportOffset(source);
rlm@79: 
rlm@79:     element = $(element);
rlm@79:     var delta = [0, 0];
rlm@79:     var parent = null;
rlm@79:     if (Element.getStyle(element, 'position') == 'absolute') {
rlm@79:       parent = Element.getOffsetParent(element);
rlm@79:       delta = Element.viewportOffset(parent);
rlm@79:     }
rlm@79: 
rlm@79:     if (parent == document.body) {
rlm@79:       delta[0] -= document.body.offsetLeft;
rlm@79:       delta[1] -= document.body.offsetTop;
rlm@79:     }
rlm@79: 
rlm@79:     if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
rlm@79:     if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
rlm@79:     if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
rlm@79:     if (options.setHeight) element.style.height = source.offsetHeight + 'px';
rlm@79:     return element;
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: Object.extend(Element.Methods, {
rlm@79:   getElementsBySelector: Element.Methods.select,
rlm@79: 
rlm@79:   childElements: Element.Methods.immediateDescendants
rlm@79: });
rlm@79: 
rlm@79: Element._attributeTranslations = {
rlm@79:   write: {
rlm@79:     names: {
rlm@79:       className: 'class',
rlm@79:       htmlFor:   'for'
rlm@79:     },
rlm@79:     values: { }
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: if (Prototype.Browser.Opera) {
rlm@79:   Element.Methods.getStyle = Element.Methods.getStyle.wrap(
rlm@79:     function(proceed, element, style) {
rlm@79:       switch (style) {
rlm@79:         case 'left': case 'top': case 'right': case 'bottom':
rlm@79:           if (proceed(element, 'position') === 'static') return null;
rlm@79:         case 'height': case 'width':
rlm@79:           if (!Element.visible(element)) return null;
rlm@79: 
rlm@79:           var dim = parseInt(proceed(element, style), 10);
rlm@79: 
rlm@79:           if (dim !== element['offset' + style.capitalize()])
rlm@79:             return dim + 'px';
rlm@79: 
rlm@79:           var properties;
rlm@79:           if (style === 'height') {
rlm@79:             properties = ['border-top-width', 'padding-top',
rlm@79:              'padding-bottom', 'border-bottom-width'];
rlm@79:           }
rlm@79:           else {
rlm@79:             properties = ['border-left-width', 'padding-left',
rlm@79:              'padding-right', 'border-right-width'];
rlm@79:           }
rlm@79:           return properties.inject(dim, function(memo, property) {
rlm@79:             var val = proceed(element, property);
rlm@79:             return val === null ? memo : memo - parseInt(val, 10);
rlm@79:           }) + 'px';
rlm@79:         default: return proceed(element, style);
rlm@79:       }
rlm@79:     }
rlm@79:   );
rlm@79: 
rlm@79:   Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
rlm@79:     function(proceed, element, attribute) {
rlm@79:       if (attribute === 'title') return element.title;
rlm@79:       return proceed(element, attribute);
rlm@79:     }
rlm@79:   );
rlm@79: }
rlm@79: 
rlm@79: else if (Prototype.Browser.IE) {
rlm@79:   Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
rlm@79:     function(proceed, element) {
rlm@79:       element = $(element);
rlm@79:       try { element.offsetParent }
rlm@79:       catch(e) { return $(document.body) }
rlm@79:       var position = element.getStyle('position');
rlm@79:       if (position !== 'static') return proceed(element);
rlm@79:       element.setStyle({ position: 'relative' });
rlm@79:       var value = proceed(element);
rlm@79:       element.setStyle({ position: position });
rlm@79:       return value;
rlm@79:     }
rlm@79:   );
rlm@79: 
rlm@79:   $w('positionedOffset viewportOffset').each(function(method) {
rlm@79:     Element.Methods[method] = Element.Methods[method].wrap(
rlm@79:       function(proceed, element) {
rlm@79:         element = $(element);
rlm@79:         try { element.offsetParent }
rlm@79:         catch(e) { return Element._returnOffset(0,0) }
rlm@79:         var position = element.getStyle('position');
rlm@79:         if (position !== 'static') return proceed(element);
rlm@79:         var offsetParent = element.getOffsetParent();
rlm@79:         if (offsetParent && offsetParent.getStyle('position') === 'fixed')
rlm@79:           offsetParent.setStyle({ zoom: 1 });
rlm@79:         element.setStyle({ position: 'relative' });
rlm@79:         var value = proceed(element);
rlm@79:         element.setStyle({ position: position });
rlm@79:         return value;
rlm@79:       }
rlm@79:     );
rlm@79:   });
rlm@79: 
rlm@79:   Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
rlm@79:     function(proceed, element) {
rlm@79:       try { element.offsetParent }
rlm@79:       catch(e) { return Element._returnOffset(0,0) }
rlm@79:       return proceed(element);
rlm@79:     }
rlm@79:   );
rlm@79: 
rlm@79:   Element.Methods.getStyle = function(element, style) {
rlm@79:     element = $(element);
rlm@79:     style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
rlm@79:     var value = element.style[style];
rlm@79:     if (!value && element.currentStyle) value = element.currentStyle[style];
rlm@79: 
rlm@79:     if (style == 'opacity') {
rlm@79:       if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
rlm@79:         if (value[1]) return parseFloat(value[1]) / 100;
rlm@79:       return 1.0;
rlm@79:     }
rlm@79: 
rlm@79:     if (value == 'auto') {
rlm@79:       if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
rlm@79:         return element['offset' + style.capitalize()] + 'px';
rlm@79:       return null;
rlm@79:     }
rlm@79:     return value;
rlm@79:   };
rlm@79: 
rlm@79:   Element.Methods.setOpacity = function(element, value) {
rlm@79:     function stripAlpha(filter){
rlm@79:       return filter.replace(/alpha\([^\)]*\)/gi,'');
rlm@79:     }
rlm@79:     element = $(element);
rlm@79:     var currentStyle = element.currentStyle;
rlm@79:     if ((currentStyle && !currentStyle.hasLayout) ||
rlm@79:       (!currentStyle && element.style.zoom == 'normal'))
rlm@79:         element.style.zoom = 1;
rlm@79: 
rlm@79:     var filter = element.getStyle('filter'), style = element.style;
rlm@79:     if (value == 1 || value === '') {
rlm@79:       (filter = stripAlpha(filter)) ?
rlm@79:         style.filter = filter : style.removeAttribute('filter');
rlm@79:       return element;
rlm@79:     } else if (value < 0.00001) value = 0;
rlm@79:     style.filter = stripAlpha(filter) +
rlm@79:       'alpha(opacity=' + (value * 100) + ')';
rlm@79:     return element;
rlm@79:   };
rlm@79: 
rlm@79:   Element._attributeTranslations = (function(){
rlm@79: 
rlm@79:     var classProp = 'className';
rlm@79:     var forProp = 'for';
rlm@79: 
rlm@79:     var el = document.createElement('div');
rlm@79: 
rlm@79:     el.setAttribute(classProp, 'x');
rlm@79: 
rlm@79:     if (el.className !== 'x') {
rlm@79:       el.setAttribute('class', 'x');
rlm@79:       if (el.className === 'x') {
rlm@79:         classProp = 'class';
rlm@79:       }
rlm@79:     }
rlm@79:     el = null;
rlm@79: 
rlm@79:     el = document.createElement('label');
rlm@79:     el.setAttribute(forProp, 'x');
rlm@79:     if (el.htmlFor !== 'x') {
rlm@79:       el.setAttribute('htmlFor', 'x');
rlm@79:       if (el.htmlFor === 'x') {
rlm@79:         forProp = 'htmlFor';
rlm@79:       }
rlm@79:     }
rlm@79:     el = null;
rlm@79: 
rlm@79:     return {
rlm@79:       read: {
rlm@79:         names: {
rlm@79:           'class':      classProp,
rlm@79:           'className':  classProp,
rlm@79:           'for':        forProp,
rlm@79:           'htmlFor':    forProp
rlm@79:         },
rlm@79:         values: {
rlm@79:           _getAttr: function(element, attribute) {
rlm@79:             return element.getAttribute(attribute);
rlm@79:           },
rlm@79:           _getAttr2: function(element, attribute) {
rlm@79:             return element.getAttribute(attribute, 2);
rlm@79:           },
rlm@79:           _getAttrNode: function(element, attribute) {
rlm@79:             var node = element.getAttributeNode(attribute);
rlm@79:             return node ? node.value : "";
rlm@79:           },
rlm@79:           _getEv: (function(){
rlm@79: 
rlm@79:             var el = document.createElement('div');
rlm@79:             el.onclick = Prototype.emptyFunction;
rlm@79:             var value = el.getAttribute('onclick');
rlm@79:             var f;
rlm@79: 
rlm@79:             if (String(value).indexOf('{') > -1) {
rlm@79:               f = function(element, attribute) {
rlm@79:                 attribute = element.getAttribute(attribute);
rlm@79:                 if (!attribute) return null;
rlm@79:                 attribute = attribute.toString();
rlm@79:                 attribute = attribute.split('{')[1];
rlm@79:                 attribute = attribute.split('}')[0];
rlm@79:                 return attribute.strip();
rlm@79:               };
rlm@79:             }
rlm@79:             else if (value === '') {
rlm@79:               f = function(element, attribute) {
rlm@79:                 attribute = element.getAttribute(attribute);
rlm@79:                 if (!attribute) return null;
rlm@79:                 return attribute.strip();
rlm@79:               };
rlm@79:             }
rlm@79:             el = null;
rlm@79:             return f;
rlm@79:           })(),
rlm@79:           _flag: function(element, attribute) {
rlm@79:             return $(element).hasAttribute(attribute) ? attribute : null;
rlm@79:           },
rlm@79:           style: function(element) {
rlm@79:             return element.style.cssText.toLowerCase();
rlm@79:           },
rlm@79:           title: function(element) {
rlm@79:             return element.title;
rlm@79:           }
rlm@79:         }
rlm@79:       }
rlm@79:     }
rlm@79:   })();
rlm@79: 
rlm@79:   Element._attributeTranslations.write = {
rlm@79:     names: Object.extend({
rlm@79:       cellpadding: 'cellPadding',
rlm@79:       cellspacing: 'cellSpacing'
rlm@79:     }, Element._attributeTranslations.read.names),
rlm@79:     values: {
rlm@79:       checked: function(element, value) {
rlm@79:         element.checked = !!value;
rlm@79:       },
rlm@79: 
rlm@79:       style: function(element, value) {
rlm@79:         element.style.cssText = value ? value : '';
rlm@79:       }
rlm@79:     }
rlm@79:   };
rlm@79: 
rlm@79:   Element._attributeTranslations.has = {};
rlm@79: 
rlm@79:   $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
rlm@79:       'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
rlm@79:     Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
rlm@79:     Element._attributeTranslations.has[attr.toLowerCase()] = attr;
rlm@79:   });
rlm@79: 
rlm@79:   (function(v) {
rlm@79:     Object.extend(v, {
rlm@79:       href:        v._getAttr2,
rlm@79:       src:         v._getAttr2,
rlm@79:       type:        v._getAttr,
rlm@79:       action:      v._getAttrNode,
rlm@79:       disabled:    v._flag,
rlm@79:       checked:     v._flag,
rlm@79:       readonly:    v._flag,
rlm@79:       multiple:    v._flag,
rlm@79:       onload:      v._getEv,
rlm@79:       onunload:    v._getEv,
rlm@79:       onclick:     v._getEv,
rlm@79:       ondblclick:  v._getEv,
rlm@79:       onmousedown: v._getEv,
rlm@79:       onmouseup:   v._getEv,
rlm@79:       onmouseover: v._getEv,
rlm@79:       onmousemove: v._getEv,
rlm@79:       onmouseout:  v._getEv,
rlm@79:       onfocus:     v._getEv,
rlm@79:       onblur:      v._getEv,
rlm@79:       onkeypress:  v._getEv,
rlm@79:       onkeydown:   v._getEv,
rlm@79:       onkeyup:     v._getEv,
rlm@79:       onsubmit:    v._getEv,
rlm@79:       onreset:     v._getEv,
rlm@79:       onselect:    v._getEv,
rlm@79:       onchange:    v._getEv
rlm@79:     });
rlm@79:   })(Element._attributeTranslations.read.values);
rlm@79: 
rlm@79:   if (Prototype.BrowserFeatures.ElementExtensions) {
rlm@79:     (function() {
rlm@79:       function _descendants(element) {
rlm@79:         var nodes = element.getElementsByTagName('*'), results = [];
rlm@79:         for (var i = 0, node; node = nodes[i]; i++)
rlm@79:           if (node.tagName !== "!") // Filter out comment nodes.
rlm@79:             results.push(node);
rlm@79:         return results;
rlm@79:       }
rlm@79: 
rlm@79:       Element.Methods.down = function(element, expression, index) {
rlm@79:         element = $(element);
rlm@79:         if (arguments.length == 1) return element.firstDescendant();
rlm@79:         return Object.isNumber(expression) ? _descendants(element)[expression] :
rlm@79:           Element.select(element, expression)[index || 0];
rlm@79:       }
rlm@79:     })();
rlm@79:   }
rlm@79: 
rlm@79: }
rlm@79: 
rlm@79: else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
rlm@79:   Element.Methods.setOpacity = function(element, value) {
rlm@79:     element = $(element);
rlm@79:     element.style.opacity = (value == 1) ? 0.999999 :
rlm@79:       (value === '') ? '' : (value < 0.00001) ? 0 : value;
rlm@79:     return element;
rlm@79:   };
rlm@79: }
rlm@79: 
rlm@79: else if (Prototype.Browser.WebKit) {
rlm@79:   Element.Methods.setOpacity = function(element, value) {
rlm@79:     element = $(element);
rlm@79:     element.style.opacity = (value == 1 || value === '') ? '' :
rlm@79:       (value < 0.00001) ? 0 : value;
rlm@79: 
rlm@79:     if (value == 1)
rlm@79:       if(element.tagName.toUpperCase() == 'IMG' && element.width) {
rlm@79:         element.width++; element.width--;
rlm@79:       } else try {
rlm@79:         var n = document.createTextNode(' ');
rlm@79:         element.appendChild(n);
rlm@79:         element.removeChild(n);
rlm@79:       } catch (e) { }
rlm@79: 
rlm@79:     return element;
rlm@79:   };
rlm@79: 
rlm@79:   Element.Methods.cumulativeOffset = function(element) {
rlm@79:     var valueT = 0, valueL = 0;
rlm@79:     do {
rlm@79:       valueT += element.offsetTop  || 0;
rlm@79:       valueL += element.offsetLeft || 0;
rlm@79:       if (element.offsetParent == document.body)
rlm@79:         if (Element.getStyle(element, 'position') == 'absolute') break;
rlm@79: 
rlm@79:       element = element.offsetParent;
rlm@79:     } while (element);
rlm@79: 
rlm@79:     return Element._returnOffset(valueL, valueT);
rlm@79:   };
rlm@79: }
rlm@79: 
rlm@79: if ('outerHTML' in document.documentElement) {
rlm@79:   Element.Methods.replace = function(element, content) {
rlm@79:     element = $(element);
rlm@79: 
rlm@79:     if (content && content.toElement) content = content.toElement();
rlm@79:     if (Object.isElement(content)) {
rlm@79:       element.parentNode.replaceChild(content, element);
rlm@79:       return element;
rlm@79:     }
rlm@79: 
rlm@79:     content = Object.toHTML(content);
rlm@79:     var parent = element.parentNode, tagName = parent.tagName.toUpperCase();
rlm@79: 
rlm@79:     if (Element._insertionTranslations.tags[tagName]) {
rlm@79:       var nextSibling = element.next();
rlm@79:       var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
rlm@79:       parent.removeChild(element);
rlm@79:       if (nextSibling)
rlm@79:         fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
rlm@79:       else
rlm@79:         fragments.each(function(node) { parent.appendChild(node) });
rlm@79:     }
rlm@79:     else element.outerHTML = content.stripScripts();
rlm@79: 
rlm@79:     content.evalScripts.bind(content).defer();
rlm@79:     return element;
rlm@79:   };
rlm@79: }
rlm@79: 
rlm@79: Element._returnOffset = function(l, t) {
rlm@79:   var result = [l, t];
rlm@79:   result.left = l;
rlm@79:   result.top = t;
rlm@79:   return result;
rlm@79: };
rlm@79: 
rlm@79: Element._getContentFromAnonymousElement = function(tagName, html) {
rlm@79:   var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
rlm@79:   if (t) {
rlm@79:     div.innerHTML = t[0] + html + t[1];
rlm@79:     t[2].times(function() { div = div.firstChild });
rlm@79:   } else div.innerHTML = html;
rlm@79:   return $A(div.childNodes);
rlm@79: };
rlm@79: 
rlm@79: Element._insertionTranslations = {
rlm@79:   before: function(element, node) {
rlm@79:     element.parentNode.insertBefore(node, element);
rlm@79:   },
rlm@79:   top: function(element, node) {
rlm@79:     element.insertBefore(node, element.firstChild);
rlm@79:   },
rlm@79:   bottom: function(element, node) {
rlm@79:     element.appendChild(node);
rlm@79:   },
rlm@79:   after: function(element, node) {
rlm@79:     element.parentNode.insertBefore(node, element.nextSibling);
rlm@79:   },
rlm@79:   tags: {
rlm@79:     TABLE:  ['<table>',                '</table>',                   1],
rlm@79:     TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
rlm@79:     TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
rlm@79:     TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
rlm@79:     SELECT: ['<select>',               '</select>',                  1]
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: (function() {
rlm@79:   var tags = Element._insertionTranslations.tags;
rlm@79:   Object.extend(tags, {
rlm@79:     THEAD: tags.TBODY,
rlm@79:     TFOOT: tags.TBODY,
rlm@79:     TH:    tags.TD
rlm@79:   });
rlm@79: })();
rlm@79: 
rlm@79: Element.Methods.Simulated = {
rlm@79:   hasAttribute: function(element, attribute) {
rlm@79:     attribute = Element._attributeTranslations.has[attribute] || attribute;
rlm@79:     var node = $(element).getAttributeNode(attribute);
rlm@79:     return !!(node && node.specified);
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: Element.Methods.ByTag = { };
rlm@79: 
rlm@79: Object.extend(Element, Element.Methods);
rlm@79: 
rlm@79: (function(div) {
rlm@79: 
rlm@79:   if (!Prototype.BrowserFeatures.ElementExtensions && div['__proto__']) {
rlm@79:     window.HTMLElement = { };
rlm@79:     window.HTMLElement.prototype = div['__proto__'];
rlm@79:     Prototype.BrowserFeatures.ElementExtensions = true;
rlm@79:   }
rlm@79: 
rlm@79:   div = null;
rlm@79: 
rlm@79: })(document.createElement('div'))
rlm@79: 
rlm@79: Element.extend = (function() {
rlm@79: 
rlm@79:   function checkDeficiency(tagName) {
rlm@79:     if (typeof window.Element != 'undefined') {
rlm@79:       var proto = window.Element.prototype;
rlm@79:       if (proto) {
rlm@79:         var id = '_' + (Math.random()+'').slice(2);
rlm@79:         var el = document.createElement(tagName);
rlm@79:         proto[id] = 'x';
rlm@79:         var isBuggy = (el[id] !== 'x');
rlm@79:         delete proto[id];
rlm@79:         el = null;
rlm@79:         return isBuggy;
rlm@79:       }
rlm@79:     }
rlm@79:     return false;
rlm@79:   }
rlm@79: 
rlm@79:   function extendElementWith(element, methods) {
rlm@79:     for (var property in methods) {
rlm@79:       var value = methods[property];
rlm@79:       if (Object.isFunction(value) && !(property in element))
rlm@79:         element[property] = value.methodize();
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   var HTMLOBJECTELEMENT_PROTOTYPE_BUGGY = checkDeficiency('object');
rlm@79: 
rlm@79:   if (Prototype.BrowserFeatures.SpecificElementExtensions) {
rlm@79:     if (HTMLOBJECTELEMENT_PROTOTYPE_BUGGY) {
rlm@79:       return function(element) {
rlm@79:         if (element && typeof element._extendedByPrototype == 'undefined') {
rlm@79:           var t = element.tagName;
rlm@79:           if (t && (/^(?:object|applet|embed)$/i.test(t))) {
rlm@79:             extendElementWith(element, Element.Methods);
rlm@79:             extendElementWith(element, Element.Methods.Simulated);
rlm@79:             extendElementWith(element, Element.Methods.ByTag[t.toUpperCase()]);
rlm@79:           }
rlm@79:         }
rlm@79:         return element;
rlm@79:       }
rlm@79:     }
rlm@79:     return Prototype.K;
rlm@79:   }
rlm@79: 
rlm@79:   var Methods = { }, ByTag = Element.Methods.ByTag;
rlm@79: 
rlm@79:   var extend = Object.extend(function(element) {
rlm@79:     if (!element || typeof element._extendedByPrototype != 'undefined' ||
rlm@79:         element.nodeType != 1 || element == window) return element;
rlm@79: 
rlm@79:     var methods = Object.clone(Methods),
rlm@79:         tagName = element.tagName.toUpperCase();
rlm@79: 
rlm@79:     if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
rlm@79: 
rlm@79:     extendElementWith(element, methods);
rlm@79: 
rlm@79:     element._extendedByPrototype = Prototype.emptyFunction;
rlm@79:     return element;
rlm@79: 
rlm@79:   }, {
rlm@79:     refresh: function() {
rlm@79:       if (!Prototype.BrowserFeatures.ElementExtensions) {
rlm@79:         Object.extend(Methods, Element.Methods);
rlm@79:         Object.extend(Methods, Element.Methods.Simulated);
rlm@79:       }
rlm@79:     }
rlm@79:   });
rlm@79: 
rlm@79:   extend.refresh();
rlm@79:   return extend;
rlm@79: })();
rlm@79: 
rlm@79: Element.hasAttribute = function(element, attribute) {
rlm@79:   if (element.hasAttribute) return element.hasAttribute(attribute);
rlm@79:   return Element.Methods.Simulated.hasAttribute(element, attribute);
rlm@79: };
rlm@79: 
rlm@79: Element.addMethods = function(methods) {
rlm@79:   var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
rlm@79: 
rlm@79:   if (!methods) {
rlm@79:     Object.extend(Form, Form.Methods);
rlm@79:     Object.extend(Form.Element, Form.Element.Methods);
rlm@79:     Object.extend(Element.Methods.ByTag, {
rlm@79:       "FORM":     Object.clone(Form.Methods),
rlm@79:       "INPUT":    Object.clone(Form.Element.Methods),
rlm@79:       "SELECT":   Object.clone(Form.Element.Methods),
rlm@79:       "TEXTAREA": Object.clone(Form.Element.Methods)
rlm@79:     });
rlm@79:   }
rlm@79: 
rlm@79:   if (arguments.length == 2) {
rlm@79:     var tagName = methods;
rlm@79:     methods = arguments[1];
rlm@79:   }
rlm@79: 
rlm@79:   if (!tagName) Object.extend(Element.Methods, methods || { });
rlm@79:   else {
rlm@79:     if (Object.isArray(tagName)) tagName.each(extend);
rlm@79:     else extend(tagName);
rlm@79:   }
rlm@79: 
rlm@79:   function extend(tagName) {
rlm@79:     tagName = tagName.toUpperCase();
rlm@79:     if (!Element.Methods.ByTag[tagName])
rlm@79:       Element.Methods.ByTag[tagName] = { };
rlm@79:     Object.extend(Element.Methods.ByTag[tagName], methods);
rlm@79:   }
rlm@79: 
rlm@79:   function copy(methods, destination, onlyIfAbsent) {
rlm@79:     onlyIfAbsent = onlyIfAbsent || false;
rlm@79:     for (var property in methods) {
rlm@79:       var value = methods[property];
rlm@79:       if (!Object.isFunction(value)) continue;
rlm@79:       if (!onlyIfAbsent || !(property in destination))
rlm@79:         destination[property] = value.methodize();
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   function findDOMClass(tagName) {
rlm@79:     var klass;
rlm@79:     var trans = {
rlm@79:       "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
rlm@79:       "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
rlm@79:       "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
rlm@79:       "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
rlm@79:       "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
rlm@79:       "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
rlm@79:       "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
rlm@79:       "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
rlm@79:       "FrameSet", "IFRAME": "IFrame"
rlm@79:     };
rlm@79:     if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
rlm@79:     if (window[klass]) return window[klass];
rlm@79:     klass = 'HTML' + tagName + 'Element';
rlm@79:     if (window[klass]) return window[klass];
rlm@79:     klass = 'HTML' + tagName.capitalize() + 'Element';
rlm@79:     if (window[klass]) return window[klass];
rlm@79: 
rlm@79:     var element = document.createElement(tagName);
rlm@79:     var proto = element['__proto__'] || element.constructor.prototype;
rlm@79:     element = null;
rlm@79:     return proto;
rlm@79:   }
rlm@79: 
rlm@79:   var elementPrototype = window.HTMLElement ? HTMLElement.prototype :
rlm@79:    Element.prototype;
rlm@79: 
rlm@79:   if (F.ElementExtensions) {
rlm@79:     copy(Element.Methods, elementPrototype);
rlm@79:     copy(Element.Methods.Simulated, elementPrototype, true);
rlm@79:   }
rlm@79: 
rlm@79:   if (F.SpecificElementExtensions) {
rlm@79:     for (var tag in Element.Methods.ByTag) {
rlm@79:       var klass = findDOMClass(tag);
rlm@79:       if (Object.isUndefined(klass)) continue;
rlm@79:       copy(T[tag], klass.prototype);
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   Object.extend(Element, Element.Methods);
rlm@79:   delete Element.ByTag;
rlm@79: 
rlm@79:   if (Element.extend.refresh) Element.extend.refresh();
rlm@79:   Element.cache = { };
rlm@79: };
rlm@79: 
rlm@79: 
rlm@79: document.viewport = {
rlm@79: 
rlm@79:   getDimensions: function() {
rlm@79:     return { width: this.getWidth(), height: this.getHeight() };
rlm@79:   },
rlm@79: 
rlm@79:   getScrollOffsets: function() {
rlm@79:     return Element._returnOffset(
rlm@79:       window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
rlm@79:       window.pageYOffset || document.documentElement.scrollTop  || document.body.scrollTop);
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: (function(viewport) {
rlm@79:   var B = Prototype.Browser, doc = document, element, property = {};
rlm@79: 
rlm@79:   function getRootElement() {
rlm@79:     if (B.WebKit && !doc.evaluate)
rlm@79:       return document;
rlm@79: 
rlm@79:     if (B.Opera && window.parseFloat(window.opera.version()) < 9.5)
rlm@79:       return document.body;
rlm@79: 
rlm@79:     return document.documentElement;
rlm@79:   }
rlm@79: 
rlm@79:   function define(D) {
rlm@79:     if (!element) element = getRootElement();
rlm@79: 
rlm@79:     property[D] = 'client' + D;
rlm@79: 
rlm@79:     viewport['get' + D] = function() { return element[property[D]] };
rlm@79:     return viewport['get' + D]();
rlm@79:   }
rlm@79: 
rlm@79:   viewport.getWidth  = define.curry('Width');
rlm@79: 
rlm@79:   viewport.getHeight = define.curry('Height');
rlm@79: })(document.viewport);
rlm@79: 
rlm@79: 
rlm@79: Element.Storage = {
rlm@79:   UID: 1
rlm@79: };
rlm@79: 
rlm@79: Element.addMethods({
rlm@79:   getStorage: function(element) {
rlm@79:     if (!(element = $(element))) return;
rlm@79: 
rlm@79:     var uid;
rlm@79:     if (element === window) {
rlm@79:       uid = 0;
rlm@79:     } else {
rlm@79:       if (typeof element._prototypeUID === "undefined")
rlm@79:         element._prototypeUID = [Element.Storage.UID++];
rlm@79:       uid = element._prototypeUID[0];
rlm@79:     }
rlm@79: 
rlm@79:     if (!Element.Storage[uid])
rlm@79:       Element.Storage[uid] = $H();
rlm@79: 
rlm@79:     return Element.Storage[uid];
rlm@79:   },
rlm@79: 
rlm@79:   store: function(element, key, value) {
rlm@79:     if (!(element = $(element))) return;
rlm@79: 
rlm@79:     if (arguments.length === 2) {
rlm@79:       Element.getStorage(element).update(key);
rlm@79:     } else {
rlm@79:       Element.getStorage(element).set(key, value);
rlm@79:     }
rlm@79: 
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   retrieve: function(element, key, defaultValue) {
rlm@79:     if (!(element = $(element))) return;
rlm@79:     var hash = Element.getStorage(element), value = hash.get(key);
rlm@79: 
rlm@79:     if (Object.isUndefined(value)) {
rlm@79:       hash.set(key, defaultValue);
rlm@79:       value = defaultValue;
rlm@79:     }
rlm@79: 
rlm@79:     return value;
rlm@79:   },
rlm@79: 
rlm@79:   clone: function(element, deep) {
rlm@79:     if (!(element = $(element))) return;
rlm@79:     var clone = element.cloneNode(deep);
rlm@79:     clone._prototypeUID = void 0;
rlm@79:     if (deep) {
rlm@79:       var descendants = Element.select(clone, '*'),
rlm@79:           i = descendants.length;
rlm@79:       while (i--) {
rlm@79:         descendants[i]._prototypeUID = void 0;
rlm@79:       }
rlm@79:     }
rlm@79:     return Element.extend(clone);
rlm@79:   }
rlm@79: });
rlm@79: /* Portions of the Selector class are derived from Jack Slocum's DomQuery,
rlm@79:  * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
rlm@79:  * license.  Please see http://www.yui-ext.com/ for more information. */
rlm@79: 
rlm@79: var Selector = Class.create({
rlm@79:   initialize: function(expression) {
rlm@79:     this.expression = expression.strip();
rlm@79: 
rlm@79:     if (this.shouldUseSelectorsAPI()) {
rlm@79:       this.mode = 'selectorsAPI';
rlm@79:     } else if (this.shouldUseXPath()) {
rlm@79:       this.mode = 'xpath';
rlm@79:       this.compileXPathMatcher();
rlm@79:     } else {
rlm@79:       this.mode = "normal";
rlm@79:       this.compileMatcher();
rlm@79:     }
rlm@79: 
rlm@79:   },
rlm@79: 
rlm@79:   shouldUseXPath: (function() {
rlm@79: 
rlm@79:     var IS_DESCENDANT_SELECTOR_BUGGY = (function(){
rlm@79:       var isBuggy = false;
rlm@79:       if (document.evaluate && window.XPathResult) {
rlm@79:         var el = document.createElement('div');
rlm@79:         el.innerHTML = '<ul><li></li></ul><div><ul><li></li></ul></div>';
rlm@79: 
rlm@79:         var xpath = ".//*[local-name()='ul' or local-name()='UL']" +
rlm@79:           "//*[local-name()='li' or local-name()='LI']";
rlm@79: 
rlm@79:         var result = document.evaluate(xpath, el, null,
rlm@79:           XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
rlm@79: 
rlm@79:         isBuggy = (result.snapshotLength !== 2);
rlm@79:         el = null;
rlm@79:       }
rlm@79:       return isBuggy;
rlm@79:     })();
rlm@79: 
rlm@79:     return function() {
rlm@79:       if (!Prototype.BrowserFeatures.XPath) return false;
rlm@79: 
rlm@79:       var e = this.expression;
rlm@79: 
rlm@79:       if (Prototype.Browser.WebKit &&
rlm@79:        (e.include("-of-type") || e.include(":empty")))
rlm@79:         return false;
rlm@79: 
rlm@79:       if ((/(\[[\w-]*?:|:checked)/).test(e))
rlm@79:         return false;
rlm@79: 
rlm@79:       if (IS_DESCENDANT_SELECTOR_BUGGY) return false;
rlm@79: 
rlm@79:       return true;
rlm@79:     }
rlm@79: 
rlm@79:   })(),
rlm@79: 
rlm@79:   shouldUseSelectorsAPI: function() {
rlm@79:     if (!Prototype.BrowserFeatures.SelectorsAPI) return false;
rlm@79: 
rlm@79:     if (Selector.CASE_INSENSITIVE_CLASS_NAMES) return false;
rlm@79: 
rlm@79:     if (!Selector._div) Selector._div = new Element('div');
rlm@79: 
rlm@79:     try {
rlm@79:       Selector._div.querySelector(this.expression);
rlm@79:     } catch(e) {
rlm@79:       return false;
rlm@79:     }
rlm@79: 
rlm@79:     return true;
rlm@79:   },
rlm@79: 
rlm@79:   compileMatcher: function() {
rlm@79:     var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
rlm@79:         c = Selector.criteria, le, p, m, len = ps.length, name;
rlm@79: 
rlm@79:     if (Selector._cache[e]) {
rlm@79:       this.matcher = Selector._cache[e];
rlm@79:       return;
rlm@79:     }
rlm@79: 
rlm@79:     this.matcher = ["this.matcher = function(root) {",
rlm@79:                     "var r = root, h = Selector.handlers, c = false, n;"];
rlm@79: 
rlm@79:     while (e && le != e && (/\S/).test(e)) {
rlm@79:       le = e;
rlm@79:       for (var i = 0; i<len; i++) {
rlm@79:         p = ps[i].re;
rlm@79:         name = ps[i].name;
rlm@79:         if (m = e.match(p)) {
rlm@79:           this.matcher.push(Object.isFunction(c[name]) ? c[name](m) :
rlm@79:             new Template(c[name]).evaluate(m));
rlm@79:           e = e.replace(m[0], '');
rlm@79:           break;
rlm@79:         }
rlm@79:       }
rlm@79:     }
rlm@79: 
rlm@79:     this.matcher.push("return h.unique(n);\n}");
rlm@79:     eval(this.matcher.join('\n'));
rlm@79:     Selector._cache[this.expression] = this.matcher;
rlm@79:   },
rlm@79: 
rlm@79:   compileXPathMatcher: function() {
rlm@79:     var e = this.expression, ps = Selector.patterns,
rlm@79:         x = Selector.xpath, le, m, len = ps.length, name;
rlm@79: 
rlm@79:     if (Selector._cache[e]) {
rlm@79:       this.xpath = Selector._cache[e]; return;
rlm@79:     }
rlm@79: 
rlm@79:     this.matcher = ['.//*'];
rlm@79:     while (e && le != e && (/\S/).test(e)) {
rlm@79:       le = e;
rlm@79:       for (var i = 0; i<len; i++) {
rlm@79:         name = ps[i].name;
rlm@79:         if (m = e.match(ps[i].re)) {
rlm@79:           this.matcher.push(Object.isFunction(x[name]) ? x[name](m) :
rlm@79:             new Template(x[name]).evaluate(m));
rlm@79:           e = e.replace(m[0], '');
rlm@79:           break;
rlm@79:         }
rlm@79:       }
rlm@79:     }
rlm@79: 
rlm@79:     this.xpath = this.matcher.join('');
rlm@79:     Selector._cache[this.expression] = this.xpath;
rlm@79:   },
rlm@79: 
rlm@79:   findElements: function(root) {
rlm@79:     root = root || document;
rlm@79:     var e = this.expression, results;
rlm@79: 
rlm@79:     switch (this.mode) {
rlm@79:       case 'selectorsAPI':
rlm@79:         if (root !== document) {
rlm@79:           var oldId = root.id, id = $(root).identify();
rlm@79:           id = id.replace(/([\.:])/g, "\\$1");
rlm@79:           e = "#" + id + " " + e;
rlm@79:         }
rlm@79: 
rlm@79:         results = $A(root.querySelectorAll(e)).map(Element.extend);
rlm@79:         root.id = oldId;
rlm@79: 
rlm@79:         return results;
rlm@79:       case 'xpath':
rlm@79:         return document._getElementsByXPath(this.xpath, root);
rlm@79:       default:
rlm@79:        return this.matcher(root);
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   match: function(element) {
rlm@79:     this.tokens = [];
rlm@79: 
rlm@79:     var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
rlm@79:     var le, p, m, len = ps.length, name;
rlm@79: 
rlm@79:     while (e && le !== e && (/\S/).test(e)) {
rlm@79:       le = e;
rlm@79:       for (var i = 0; i<len; i++) {
rlm@79:         p = ps[i].re;
rlm@79:         name = ps[i].name;
rlm@79:         if (m = e.match(p)) {
rlm@79:           if (as[name]) {
rlm@79:             this.tokens.push([name, Object.clone(m)]);
rlm@79:             e = e.replace(m[0], '');
rlm@79:           } else {
rlm@79:             return this.findElements(document).include(element);
rlm@79:           }
rlm@79:         }
rlm@79:       }
rlm@79:     }
rlm@79: 
rlm@79:     var match = true, name, matches;
rlm@79:     for (var i = 0, token; token = this.tokens[i]; i++) {
rlm@79:       name = token[0], matches = token[1];
rlm@79:       if (!Selector.assertions[name](element, matches)) {
rlm@79:         match = false; break;
rlm@79:       }
rlm@79:     }
rlm@79: 
rlm@79:     return match;
rlm@79:   },
rlm@79: 
rlm@79:   toString: function() {
rlm@79:     return this.expression;
rlm@79:   },
rlm@79: 
rlm@79:   inspect: function() {
rlm@79:     return "#<Selector:" + this.expression.inspect() + ">";
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: if (Prototype.BrowserFeatures.SelectorsAPI &&
rlm@79:  document.compatMode === 'BackCompat') {
rlm@79:   Selector.CASE_INSENSITIVE_CLASS_NAMES = (function(){
rlm@79:     var div = document.createElement('div'),
rlm@79:      span = document.createElement('span');
rlm@79: 
rlm@79:     div.id = "prototype_test_id";
rlm@79:     span.className = 'Test';
rlm@79:     div.appendChild(span);
rlm@79:     var isIgnored = (div.querySelector('#prototype_test_id .test') !== null);
rlm@79:     div = span = null;
rlm@79:     return isIgnored;
rlm@79:   })();
rlm@79: }
rlm@79: 
rlm@79: Object.extend(Selector, {
rlm@79:   _cache: { },
rlm@79: 
rlm@79:   xpath: {
rlm@79:     descendant:   "//*",
rlm@79:     child:        "/*",
rlm@79:     adjacent:     "/following-sibling::*[1]",
rlm@79:     laterSibling: '/following-sibling::*',
rlm@79:     tagName:      function(m) {
rlm@79:       if (m[1] == '*') return '';
rlm@79:       return "[local-name()='" + m[1].toLowerCase() +
rlm@79:              "' or local-name()='" + m[1].toUpperCase() + "']";
rlm@79:     },
rlm@79:     className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
rlm@79:     id:           "[@id='#{1}']",
rlm@79:     attrPresence: function(m) {
rlm@79:       m[1] = m[1].toLowerCase();
rlm@79:       return new Template("[@#{1}]").evaluate(m);
rlm@79:     },
rlm@79:     attr: function(m) {
rlm@79:       m[1] = m[1].toLowerCase();
rlm@79:       m[3] = m[5] || m[6];
rlm@79:       return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
rlm@79:     },
rlm@79:     pseudo: function(m) {
rlm@79:       var h = Selector.xpath.pseudos[m[1]];
rlm@79:       if (!h) return '';
rlm@79:       if (Object.isFunction(h)) return h(m);
rlm@79:       return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
rlm@79:     },
rlm@79:     operators: {
rlm@79:       '=':  "[@#{1}='#{3}']",
rlm@79:       '!=': "[@#{1}!='#{3}']",
rlm@79:       '^=': "[starts-with(@#{1}, '#{3}')]",
rlm@79:       '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
rlm@79:       '*=': "[contains(@#{1}, '#{3}')]",
rlm@79:       '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
rlm@79:       '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
rlm@79:     },
rlm@79:     pseudos: {
rlm@79:       'first-child': '[not(preceding-sibling::*)]',
rlm@79:       'last-child':  '[not(following-sibling::*)]',
rlm@79:       'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
rlm@79:       'empty':       "[count(*) = 0 and (count(text()) = 0)]",
rlm@79:       'checked':     "[@checked]",
rlm@79:       'disabled':    "[(@disabled) and (@type!='hidden')]",
rlm@79:       'enabled':     "[not(@disabled) and (@type!='hidden')]",
rlm@79:       'not': function(m) {
rlm@79:         var e = m[6], p = Selector.patterns,
rlm@79:             x = Selector.xpath, le, v, len = p.length, name;
rlm@79: 
rlm@79:         var exclusion = [];
rlm@79:         while (e && le != e && (/\S/).test(e)) {
rlm@79:           le = e;
rlm@79:           for (var i = 0; i<len; i++) {
rlm@79:             name = p[i].name
rlm@79:             if (m = e.match(p[i].re)) {
rlm@79:               v = Object.isFunction(x[name]) ? x[name](m) : new Template(x[name]).evaluate(m);
rlm@79:               exclusion.push("(" + v.substring(1, v.length - 1) + ")");
rlm@79:               e = e.replace(m[0], '');
rlm@79:               break;
rlm@79:             }
rlm@79:           }
rlm@79:         }
rlm@79:         return "[not(" + exclusion.join(" and ") + ")]";
rlm@79:       },
rlm@79:       'nth-child':      function(m) {
rlm@79:         return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
rlm@79:       },
rlm@79:       'nth-last-child': function(m) {
rlm@79:         return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
rlm@79:       },
rlm@79:       'nth-of-type':    function(m) {
rlm@79:         return Selector.xpath.pseudos.nth("position() ", m);
rlm@79:       },
rlm@79:       'nth-last-of-type': function(m) {
rlm@79:         return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
rlm@79:       },
rlm@79:       'first-of-type':  function(m) {
rlm@79:         m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
rlm@79:       },
rlm@79:       'last-of-type':   function(m) {
rlm@79:         m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
rlm@79:       },
rlm@79:       'only-of-type':   function(m) {
rlm@79:         var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
rlm@79:       },
rlm@79:       nth: function(fragment, m) {
rlm@79:         var mm, formula = m[6], predicate;
rlm@79:         if (formula == 'even') formula = '2n+0';
rlm@79:         if (formula == 'odd')  formula = '2n+1';
rlm@79:         if (mm = formula.match(/^(\d+)$/)) // digit only
rlm@79:           return '[' + fragment + "= " + mm[1] + ']';
rlm@79:         if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
rlm@79:           if (mm[1] == "-") mm[1] = -1;
rlm@79:           var a = mm[1] ? Number(mm[1]) : 1;
rlm@79:           var b = mm[2] ? Number(mm[2]) : 0;
rlm@79:           predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
rlm@79:           "((#{fragment} - #{b}) div #{a} >= 0)]";
rlm@79:           return new Template(predicate).evaluate({
rlm@79:             fragment: fragment, a: a, b: b });
rlm@79:         }
rlm@79:       }
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   criteria: {
rlm@79:     tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
rlm@79:     className:    'n = h.className(n, r, "#{1}", c);    c = false;',
rlm@79:     id:           'n = h.id(n, r, "#{1}", c);           c = false;',
rlm@79:     attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
rlm@79:     attr: function(m) {
rlm@79:       m[3] = (m[5] || m[6]);
rlm@79:       return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
rlm@79:     },
rlm@79:     pseudo: function(m) {
rlm@79:       if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
rlm@79:       return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
rlm@79:     },
rlm@79:     descendant:   'c = "descendant";',
rlm@79:     child:        'c = "child";',
rlm@79:     adjacent:     'c = "adjacent";',
rlm@79:     laterSibling: 'c = "laterSibling";'
rlm@79:   },
rlm@79: 
rlm@79:   patterns: [
rlm@79:     { name: 'laterSibling', re: /^\s*~\s*/ },
rlm@79:     { name: 'child',        re: /^\s*>\s*/ },
rlm@79:     { name: 'adjacent',     re: /^\s*\+\s*/ },
rlm@79:     { name: 'descendant',   re: /^\s/ },
rlm@79: 
rlm@79:     { name: 'tagName',      re: /^\s*(\*|[\w\-]+)(\b|$)?/ },
rlm@79:     { name: 'id',           re: /^#([\w\-\*]+)(\b|$)/ },
rlm@79:     { name: 'className',    re: /^\.([\w\-\*]+)(\b|$)/ },
rlm@79:     { name: 'pseudo',       re: /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/ },
rlm@79:     { name: 'attrPresence', re: /^\[((?:[\w-]+:)?[\w-]+)\]/ },
rlm@79:     { name: 'attr',         re: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/ }
rlm@79:   ],
rlm@79: 
rlm@79:   assertions: {
rlm@79:     tagName: function(element, matches) {
rlm@79:       return matches[1].toUpperCase() == element.tagName.toUpperCase();
rlm@79:     },
rlm@79: 
rlm@79:     className: function(element, matches) {
rlm@79:       return Element.hasClassName(element, matches[1]);
rlm@79:     },
rlm@79: 
rlm@79:     id: function(element, matches) {
rlm@79:       return element.id === matches[1];
rlm@79:     },
rlm@79: 
rlm@79:     attrPresence: function(element, matches) {
rlm@79:       return Element.hasAttribute(element, matches[1]);
rlm@79:     },
rlm@79: 
rlm@79:     attr: function(element, matches) {
rlm@79:       var nodeValue = Element.readAttribute(element, matches[1]);
rlm@79:       return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   handlers: {
rlm@79:     concat: function(a, b) {
rlm@79:       for (var i = 0, node; node = b[i]; i++)
rlm@79:         a.push(node);
rlm@79:       return a;
rlm@79:     },
rlm@79: 
rlm@79:     mark: function(nodes) {
rlm@79:       var _true = Prototype.emptyFunction;
rlm@79:       for (var i = 0, node; node = nodes[i]; i++)
rlm@79:         node._countedByPrototype = _true;
rlm@79:       return nodes;
rlm@79:     },
rlm@79: 
rlm@79:     unmark: (function(){
rlm@79: 
rlm@79:       var PROPERTIES_ATTRIBUTES_MAP = (function(){
rlm@79:         var el = document.createElement('div'),
rlm@79:             isBuggy = false,
rlm@79:             propName = '_countedByPrototype',
rlm@79:             value = 'x'
rlm@79:         el[propName] = value;
rlm@79:         isBuggy = (el.getAttribute(propName) === value);
rlm@79:         el = null;
rlm@79:         return isBuggy;
rlm@79:       })();
rlm@79: 
rlm@79:       return PROPERTIES_ATTRIBUTES_MAP ?
rlm@79:         function(nodes) {
rlm@79:           for (var i = 0, node; node = nodes[i]; i++)
rlm@79:             node.removeAttribute('_countedByPrototype');
rlm@79:           return nodes;
rlm@79:         } :
rlm@79:         function(nodes) {
rlm@79:           for (var i = 0, node; node = nodes[i]; i++)
rlm@79:             node._countedByPrototype = void 0;
rlm@79:           return nodes;
rlm@79:         }
rlm@79:     })(),
rlm@79: 
rlm@79:     index: function(parentNode, reverse, ofType) {
rlm@79:       parentNode._countedByPrototype = Prototype.emptyFunction;
rlm@79:       if (reverse) {
rlm@79:         for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
rlm@79:           var node = nodes[i];
rlm@79:           if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
rlm@79:         }
rlm@79:       } else {
rlm@79:         for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
rlm@79:           if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
rlm@79:       }
rlm@79:     },
rlm@79: 
rlm@79:     unique: function(nodes) {
rlm@79:       if (nodes.length == 0) return nodes;
rlm@79:       var results = [], n;
rlm@79:       for (var i = 0, l = nodes.length; i < l; i++)
rlm@79:         if (typeof (n = nodes[i])._countedByPrototype == 'undefined') {
rlm@79:           n._countedByPrototype = Prototype.emptyFunction;
rlm@79:           results.push(Element.extend(n));
rlm@79:         }
rlm@79:       return Selector.handlers.unmark(results);
rlm@79:     },
rlm@79: 
rlm@79:     descendant: function(nodes) {
rlm@79:       var h = Selector.handlers;
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++)
rlm@79:         h.concat(results, node.getElementsByTagName('*'));
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     child: function(nodes) {
rlm@79:       var h = Selector.handlers;
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++) {
rlm@79:         for (var j = 0, child; child = node.childNodes[j]; j++)
rlm@79:           if (child.nodeType == 1 && child.tagName != '!') results.push(child);
rlm@79:       }
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     adjacent: function(nodes) {
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++) {
rlm@79:         var next = this.nextElementSibling(node);
rlm@79:         if (next) results.push(next);
rlm@79:       }
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     laterSibling: function(nodes) {
rlm@79:       var h = Selector.handlers;
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++)
rlm@79:         h.concat(results, Element.nextSiblings(node));
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     nextElementSibling: function(node) {
rlm@79:       while (node = node.nextSibling)
rlm@79:         if (node.nodeType == 1) return node;
rlm@79:       return null;
rlm@79:     },
rlm@79: 
rlm@79:     previousElementSibling: function(node) {
rlm@79:       while (node = node.previousSibling)
rlm@79:         if (node.nodeType == 1) return node;
rlm@79:       return null;
rlm@79:     },
rlm@79: 
rlm@79:     tagName: function(nodes, root, tagName, combinator) {
rlm@79:       var uTagName = tagName.toUpperCase();
rlm@79:       var results = [], h = Selector.handlers;
rlm@79:       if (nodes) {
rlm@79:         if (combinator) {
rlm@79:           if (combinator == "descendant") {
rlm@79:             for (var i = 0, node; node = nodes[i]; i++)
rlm@79:               h.concat(results, node.getElementsByTagName(tagName));
rlm@79:             return results;
rlm@79:           } else nodes = this[combinator](nodes);
rlm@79:           if (tagName == "*") return nodes;
rlm@79:         }
rlm@79:         for (var i = 0, node; node = nodes[i]; i++)
rlm@79:           if (node.tagName.toUpperCase() === uTagName) results.push(node);
rlm@79:         return results;
rlm@79:       } else return root.getElementsByTagName(tagName);
rlm@79:     },
rlm@79: 
rlm@79:     id: function(nodes, root, id, combinator) {
rlm@79:       var targetNode = $(id), h = Selector.handlers;
rlm@79: 
rlm@79:       if (root == document) {
rlm@79:         if (!targetNode) return [];
rlm@79:         if (!nodes) return [targetNode];
rlm@79:       } else {
rlm@79:         if (!root.sourceIndex || root.sourceIndex < 1) {
rlm@79:           var nodes = root.getElementsByTagName('*');
rlm@79:           for (var j = 0, node; node = nodes[j]; j++) {
rlm@79:             if (node.id === id) return [node];
rlm@79:           }
rlm@79:         }
rlm@79:       }
rlm@79: 
rlm@79:       if (nodes) {
rlm@79:         if (combinator) {
rlm@79:           if (combinator == 'child') {
rlm@79:             for (var i = 0, node; node = nodes[i]; i++)
rlm@79:               if (targetNode.parentNode == node) return [targetNode];
rlm@79:           } else if (combinator == 'descendant') {
rlm@79:             for (var i = 0, node; node = nodes[i]; i++)
rlm@79:               if (Element.descendantOf(targetNode, node)) return [targetNode];
rlm@79:           } else if (combinator == 'adjacent') {
rlm@79:             for (var i = 0, node; node = nodes[i]; i++)
rlm@79:               if (Selector.handlers.previousElementSibling(targetNode) == node)
rlm@79:                 return [targetNode];
rlm@79:           } else nodes = h[combinator](nodes);
rlm@79:         }
rlm@79:         for (var i = 0, node; node = nodes[i]; i++)
rlm@79:           if (node == targetNode) return [targetNode];
rlm@79:         return [];
rlm@79:       }
rlm@79:       return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
rlm@79:     },
rlm@79: 
rlm@79:     className: function(nodes, root, className, combinator) {
rlm@79:       if (nodes && combinator) nodes = this[combinator](nodes);
rlm@79:       return Selector.handlers.byClassName(nodes, root, className);
rlm@79:     },
rlm@79: 
rlm@79:     byClassName: function(nodes, root, className) {
rlm@79:       if (!nodes) nodes = Selector.handlers.descendant([root]);
rlm@79:       var needle = ' ' + className + ' ';
rlm@79:       for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
rlm@79:         nodeClassName = node.className;
rlm@79:         if (nodeClassName.length == 0) continue;
rlm@79:         if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
rlm@79:           results.push(node);
rlm@79:       }
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     attrPresence: function(nodes, root, attr, combinator) {
rlm@79:       if (!nodes) nodes = root.getElementsByTagName("*");
rlm@79:       if (nodes && combinator) nodes = this[combinator](nodes);
rlm@79:       var results = [];
rlm@79:       for (var i = 0, node; node = nodes[i]; i++)
rlm@79:         if (Element.hasAttribute(node, attr)) results.push(node);
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     attr: function(nodes, root, attr, value, operator, combinator) {
rlm@79:       if (!nodes) nodes = root.getElementsByTagName("*");
rlm@79:       if (nodes && combinator) nodes = this[combinator](nodes);
rlm@79:       var handler = Selector.operators[operator], results = [];
rlm@79:       for (var i = 0, node; node = nodes[i]; i++) {
rlm@79:         var nodeValue = Element.readAttribute(node, attr);
rlm@79:         if (nodeValue === null) continue;
rlm@79:         if (handler(nodeValue, value)) results.push(node);
rlm@79:       }
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     pseudo: function(nodes, name, value, root, combinator) {
rlm@79:       if (nodes && combinator) nodes = this[combinator](nodes);
rlm@79:       if (!nodes) nodes = root.getElementsByTagName("*");
rlm@79:       return Selector.pseudos[name](nodes, value, root);
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   pseudos: {
rlm@79:     'first-child': function(nodes, value, root) {
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++) {
rlm@79:         if (Selector.handlers.previousElementSibling(node)) continue;
rlm@79:           results.push(node);
rlm@79:       }
rlm@79:       return results;
rlm@79:     },
rlm@79:     'last-child': function(nodes, value, root) {
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++) {
rlm@79:         if (Selector.handlers.nextElementSibling(node)) continue;
rlm@79:           results.push(node);
rlm@79:       }
rlm@79:       return results;
rlm@79:     },
rlm@79:     'only-child': function(nodes, value, root) {
rlm@79:       var h = Selector.handlers;
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++)
rlm@79:         if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
rlm@79:           results.push(node);
rlm@79:       return results;
rlm@79:     },
rlm@79:     'nth-child':        function(nodes, formula, root) {
rlm@79:       return Selector.pseudos.nth(nodes, formula, root);
rlm@79:     },
rlm@79:     'nth-last-child':   function(nodes, formula, root) {
rlm@79:       return Selector.pseudos.nth(nodes, formula, root, true);
rlm@79:     },
rlm@79:     'nth-of-type':      function(nodes, formula, root) {
rlm@79:       return Selector.pseudos.nth(nodes, formula, root, false, true);
rlm@79:     },
rlm@79:     'nth-last-of-type': function(nodes, formula, root) {
rlm@79:       return Selector.pseudos.nth(nodes, formula, root, true, true);
rlm@79:     },
rlm@79:     'first-of-type':    function(nodes, formula, root) {
rlm@79:       return Selector.pseudos.nth(nodes, "1", root, false, true);
rlm@79:     },
rlm@79:     'last-of-type':     function(nodes, formula, root) {
rlm@79:       return Selector.pseudos.nth(nodes, "1", root, true, true);
rlm@79:     },
rlm@79:     'only-of-type':     function(nodes, formula, root) {
rlm@79:       var p = Selector.pseudos;
rlm@79:       return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
rlm@79:     },
rlm@79: 
rlm@79:     getIndices: function(a, b, total) {
rlm@79:       if (a == 0) return b > 0 ? [b] : [];
rlm@79:       return $R(1, total).inject([], function(memo, i) {
rlm@79:         if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
rlm@79:         return memo;
rlm@79:       });
rlm@79:     },
rlm@79: 
rlm@79:     nth: function(nodes, formula, root, reverse, ofType) {
rlm@79:       if (nodes.length == 0) return [];
rlm@79:       if (formula == 'even') formula = '2n+0';
rlm@79:       if (formula == 'odd')  formula = '2n+1';
rlm@79:       var h = Selector.handlers, results = [], indexed = [], m;
rlm@79:       h.mark(nodes);
rlm@79:       for (var i = 0, node; node = nodes[i]; i++) {
rlm@79:         if (!node.parentNode._countedByPrototype) {
rlm@79:           h.index(node.parentNode, reverse, ofType);
rlm@79:           indexed.push(node.parentNode);
rlm@79:         }
rlm@79:       }
rlm@79:       if (formula.match(/^\d+$/)) { // just a number
rlm@79:         formula = Number(formula);
rlm@79:         for (var i = 0, node; node = nodes[i]; i++)
rlm@79:           if (node.nodeIndex == formula) results.push(node);
rlm@79:       } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
rlm@79:         if (m[1] == "-") m[1] = -1;
rlm@79:         var a = m[1] ? Number(m[1]) : 1;
rlm@79:         var b = m[2] ? Number(m[2]) : 0;
rlm@79:         var indices = Selector.pseudos.getIndices(a, b, nodes.length);
rlm@79:         for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
rlm@79:           for (var j = 0; j < l; j++)
rlm@79:             if (node.nodeIndex == indices[j]) results.push(node);
rlm@79:         }
rlm@79:       }
rlm@79:       h.unmark(nodes);
rlm@79:       h.unmark(indexed);
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     'empty': function(nodes, value, root) {
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++) {
rlm@79:         if (node.tagName == '!' || node.firstChild) continue;
rlm@79:         results.push(node);
rlm@79:       }
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     'not': function(nodes, selector, root) {
rlm@79:       var h = Selector.handlers, selectorType, m;
rlm@79:       var exclusions = new Selector(selector).findElements(root);
rlm@79:       h.mark(exclusions);
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++)
rlm@79:         if (!node._countedByPrototype) results.push(node);
rlm@79:       h.unmark(exclusions);
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     'enabled': function(nodes, value, root) {
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++)
rlm@79:         if (!node.disabled && (!node.type || node.type !== 'hidden'))
rlm@79:           results.push(node);
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     'disabled': function(nodes, value, root) {
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++)
rlm@79:         if (node.disabled) results.push(node);
rlm@79:       return results;
rlm@79:     },
rlm@79: 
rlm@79:     'checked': function(nodes, value, root) {
rlm@79:       for (var i = 0, results = [], node; node = nodes[i]; i++)
rlm@79:         if (node.checked) results.push(node);
rlm@79:       return results;
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   operators: {
rlm@79:     '=':  function(nv, v) { return nv == v; },
rlm@79:     '!=': function(nv, v) { return nv != v; },
rlm@79:     '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); },
rlm@79:     '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
rlm@79:     '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
rlm@79:     '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
rlm@79:     '|=': function(nv, v) { return ('-' + (nv || "").toUpperCase() +
rlm@79:      '-').include('-' + (v || "").toUpperCase() + '-'); }
rlm@79:   },
rlm@79: 
rlm@79:   split: function(expression) {
rlm@79:     var expressions = [];
rlm@79:     expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
rlm@79:       expressions.push(m[1].strip());
rlm@79:     });
rlm@79:     return expressions;
rlm@79:   },
rlm@79: 
rlm@79:   matchElements: function(elements, expression) {
rlm@79:     var matches = $$(expression), h = Selector.handlers;
rlm@79:     h.mark(matches);
rlm@79:     for (var i = 0, results = [], element; element = elements[i]; i++)
rlm@79:       if (element._countedByPrototype) results.push(element);
rlm@79:     h.unmark(matches);
rlm@79:     return results;
rlm@79:   },
rlm@79: 
rlm@79:   findElement: function(elements, expression, index) {
rlm@79:     if (Object.isNumber(expression)) {
rlm@79:       index = expression; expression = false;
rlm@79:     }
rlm@79:     return Selector.matchElements(elements, expression || '*')[index || 0];
rlm@79:   },
rlm@79: 
rlm@79:   findChildElements: function(element, expressions) {
rlm@79:     expressions = Selector.split(expressions.join(','));
rlm@79:     var results = [], h = Selector.handlers;
rlm@79:     for (var i = 0, l = expressions.length, selector; i < l; i++) {
rlm@79:       selector = new Selector(expressions[i].strip());
rlm@79:       h.concat(results, selector.findElements(element));
rlm@79:     }
rlm@79:     return (l > 1) ? h.unique(results) : results;
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: if (Prototype.Browser.IE) {
rlm@79:   Object.extend(Selector.handlers, {
rlm@79:     concat: function(a, b) {
rlm@79:       for (var i = 0, node; node = b[i]; i++)
rlm@79:         if (node.tagName !== "!") a.push(node);
rlm@79:       return a;
rlm@79:     }
rlm@79:   });
rlm@79: }
rlm@79: 
rlm@79: function $$() {
rlm@79:   return Selector.findChildElements(document, $A(arguments));
rlm@79: }
rlm@79: 
rlm@79: var Form = {
rlm@79:   reset: function(form) {
rlm@79:     form = $(form);
rlm@79:     form.reset();
rlm@79:     return form;
rlm@79:   },
rlm@79: 
rlm@79:   serializeElements: function(elements, options) {
rlm@79:     if (typeof options != 'object') options = { hash: !!options };
rlm@79:     else if (Object.isUndefined(options.hash)) options.hash = true;
rlm@79:     var key, value, submitted = false, submit = options.submit;
rlm@79: 
rlm@79:     var data = elements.inject({ }, function(result, element) {
rlm@79:       if (!element.disabled && element.name) {
rlm@79:         key = element.name; value = $(element).getValue();
rlm@79:         if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
rlm@79:             submit !== false && (!submit || key == submit) && (submitted = true)))) {
rlm@79:           if (key in result) {
rlm@79:             if (!Object.isArray(result[key])) result[key] = [result[key]];
rlm@79:             result[key].push(value);
rlm@79:           }
rlm@79:           else result[key] = value;
rlm@79:         }
rlm@79:       }
rlm@79:       return result;
rlm@79:     });
rlm@79: 
rlm@79:     return options.hash ? data : Object.toQueryString(data);
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: Form.Methods = {
rlm@79:   serialize: function(form, options) {
rlm@79:     return Form.serializeElements(Form.getElements(form), options);
rlm@79:   },
rlm@79: 
rlm@79:   getElements: function(form) {
rlm@79:     var elements = $(form).getElementsByTagName('*'),
rlm@79:         element,
rlm@79:         arr = [ ],
rlm@79:         serializers = Form.Element.Serializers;
rlm@79:     for (var i = 0; element = elements[i]; i++) {
rlm@79:       arr.push(element);
rlm@79:     }
rlm@79:     return arr.inject([], function(elements, child) {
rlm@79:       if (serializers[child.tagName.toLowerCase()])
rlm@79:         elements.push(Element.extend(child));
rlm@79:       return elements;
rlm@79:     })
rlm@79:   },
rlm@79: 
rlm@79:   getInputs: function(form, typeName, name) {
rlm@79:     form = $(form);
rlm@79:     var inputs = form.getElementsByTagName('input');
rlm@79: 
rlm@79:     if (!typeName && !name) return $A(inputs).map(Element.extend);
rlm@79: 
rlm@79:     for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
rlm@79:       var input = inputs[i];
rlm@79:       if ((typeName && input.type != typeName) || (name && input.name != name))
rlm@79:         continue;
rlm@79:       matchingInputs.push(Element.extend(input));
rlm@79:     }
rlm@79: 
rlm@79:     return matchingInputs;
rlm@79:   },
rlm@79: 
rlm@79:   disable: function(form) {
rlm@79:     form = $(form);
rlm@79:     Form.getElements(form).invoke('disable');
rlm@79:     return form;
rlm@79:   },
rlm@79: 
rlm@79:   enable: function(form) {
rlm@79:     form = $(form);
rlm@79:     Form.getElements(form).invoke('enable');
rlm@79:     return form;
rlm@79:   },
rlm@79: 
rlm@79:   findFirstElement: function(form) {
rlm@79:     var elements = $(form).getElements().findAll(function(element) {
rlm@79:       return 'hidden' != element.type && !element.disabled;
rlm@79:     });
rlm@79:     var firstByIndex = elements.findAll(function(element) {
rlm@79:       return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
rlm@79:     }).sortBy(function(element) { return element.tabIndex }).first();
rlm@79: 
rlm@79:     return firstByIndex ? firstByIndex : elements.find(function(element) {
rlm@79:       return /^(?:input|select|textarea)$/i.test(element.tagName);
rlm@79:     });
rlm@79:   },
rlm@79: 
rlm@79:   focusFirstElement: function(form) {
rlm@79:     form = $(form);
rlm@79:     form.findFirstElement().activate();
rlm@79:     return form;
rlm@79:   },
rlm@79: 
rlm@79:   request: function(form, options) {
rlm@79:     form = $(form), options = Object.clone(options || { });
rlm@79: 
rlm@79:     var params = options.parameters, action = form.readAttribute('action') || '';
rlm@79:     if (action.blank()) action = window.location.href;
rlm@79:     options.parameters = form.serialize(true);
rlm@79: 
rlm@79:     if (params) {
rlm@79:       if (Object.isString(params)) params = params.toQueryParams();
rlm@79:       Object.extend(options.parameters, params);
rlm@79:     }
rlm@79: 
rlm@79:     if (form.hasAttribute('method') && !options.method)
rlm@79:       options.method = form.method;
rlm@79: 
rlm@79:     return new Ajax.Request(action, options);
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: /*--------------------------------------------------------------------------*/
rlm@79: 
rlm@79: 
rlm@79: Form.Element = {
rlm@79:   focus: function(element) {
rlm@79:     $(element).focus();
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   select: function(element) {
rlm@79:     $(element).select();
rlm@79:     return element;
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: Form.Element.Methods = {
rlm@79: 
rlm@79:   serialize: function(element) {
rlm@79:     element = $(element);
rlm@79:     if (!element.disabled && element.name) {
rlm@79:       var value = element.getValue();
rlm@79:       if (value != undefined) {
rlm@79:         var pair = { };
rlm@79:         pair[element.name] = value;
rlm@79:         return Object.toQueryString(pair);
rlm@79:       }
rlm@79:     }
rlm@79:     return '';
rlm@79:   },
rlm@79: 
rlm@79:   getValue: function(element) {
rlm@79:     element = $(element);
rlm@79:     var method = element.tagName.toLowerCase();
rlm@79:     return Form.Element.Serializers[method](element);
rlm@79:   },
rlm@79: 
rlm@79:   setValue: function(element, value) {
rlm@79:     element = $(element);
rlm@79:     var method = element.tagName.toLowerCase();
rlm@79:     Form.Element.Serializers[method](element, value);
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   clear: function(element) {
rlm@79:     $(element).value = '';
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   present: function(element) {
rlm@79:     return $(element).value != '';
rlm@79:   },
rlm@79: 
rlm@79:   activate: function(element) {
rlm@79:     element = $(element);
rlm@79:     try {
rlm@79:       element.focus();
rlm@79:       if (element.select && (element.tagName.toLowerCase() != 'input' ||
rlm@79:           !(/^(?:button|reset|submit)$/i.test(element.type))))
rlm@79:         element.select();
rlm@79:     } catch (e) { }
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   disable: function(element) {
rlm@79:     element = $(element);
rlm@79:     element.disabled = true;
rlm@79:     return element;
rlm@79:   },
rlm@79: 
rlm@79:   enable: function(element) {
rlm@79:     element = $(element);
rlm@79:     element.disabled = false;
rlm@79:     return element;
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: /*--------------------------------------------------------------------------*/
rlm@79: 
rlm@79: var Field = Form.Element;
rlm@79: 
rlm@79: var $F = Form.Element.Methods.getValue;
rlm@79: 
rlm@79: /*--------------------------------------------------------------------------*/
rlm@79: 
rlm@79: Form.Element.Serializers = {
rlm@79:   input: function(element, value) {
rlm@79:     switch (element.type.toLowerCase()) {
rlm@79:       case 'checkbox':
rlm@79:       case 'radio':
rlm@79:         return Form.Element.Serializers.inputSelector(element, value);
rlm@79:       default:
rlm@79:         return Form.Element.Serializers.textarea(element, value);
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   inputSelector: function(element, value) {
rlm@79:     if (Object.isUndefined(value)) return element.checked ? element.value : null;
rlm@79:     else element.checked = !!value;
rlm@79:   },
rlm@79: 
rlm@79:   textarea: function(element, value) {
rlm@79:     if (Object.isUndefined(value)) return element.value;
rlm@79:     else element.value = value;
rlm@79:   },
rlm@79: 
rlm@79:   select: function(element, value) {
rlm@79:     if (Object.isUndefined(value))
rlm@79:       return this[element.type == 'select-one' ?
rlm@79:         'selectOne' : 'selectMany'](element);
rlm@79:     else {
rlm@79:       var opt, currentValue, single = !Object.isArray(value);
rlm@79:       for (var i = 0, length = element.length; i < length; i++) {
rlm@79:         opt = element.options[i];
rlm@79:         currentValue = this.optionValue(opt);
rlm@79:         if (single) {
rlm@79:           if (currentValue == value) {
rlm@79:             opt.selected = true;
rlm@79:             return;
rlm@79:           }
rlm@79:         }
rlm@79:         else opt.selected = value.include(currentValue);
rlm@79:       }
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   selectOne: function(element) {
rlm@79:     var index = element.selectedIndex;
rlm@79:     return index >= 0 ? this.optionValue(element.options[index]) : null;
rlm@79:   },
rlm@79: 
rlm@79:   selectMany: function(element) {
rlm@79:     var values, length = element.length;
rlm@79:     if (!length) return null;
rlm@79: 
rlm@79:     for (var i = 0, values = []; i < length; i++) {
rlm@79:       var opt = element.options[i];
rlm@79:       if (opt.selected) values.push(this.optionValue(opt));
rlm@79:     }
rlm@79:     return values;
rlm@79:   },
rlm@79: 
rlm@79:   optionValue: function(opt) {
rlm@79:     return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: /*--------------------------------------------------------------------------*/
rlm@79: 
rlm@79: 
rlm@79: Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
rlm@79:   initialize: function($super, element, frequency, callback) {
rlm@79:     $super(callback, frequency);
rlm@79:     this.element   = $(element);
rlm@79:     this.lastValue = this.getValue();
rlm@79:   },
rlm@79: 
rlm@79:   execute: function() {
rlm@79:     var value = this.getValue();
rlm@79:     if (Object.isString(this.lastValue) && Object.isString(value) ?
rlm@79:         this.lastValue != value : String(this.lastValue) != String(value)) {
rlm@79:       this.callback(this.element, value);
rlm@79:       this.lastValue = value;
rlm@79:     }
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: Form.Element.Observer = Class.create(Abstract.TimedObserver, {
rlm@79:   getValue: function() {
rlm@79:     return Form.Element.getValue(this.element);
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: Form.Observer = Class.create(Abstract.TimedObserver, {
rlm@79:   getValue: function() {
rlm@79:     return Form.serialize(this.element);
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: /*--------------------------------------------------------------------------*/
rlm@79: 
rlm@79: Abstract.EventObserver = Class.create({
rlm@79:   initialize: function(element, callback) {
rlm@79:     this.element  = $(element);
rlm@79:     this.callback = callback;
rlm@79: 
rlm@79:     this.lastValue = this.getValue();
rlm@79:     if (this.element.tagName.toLowerCase() == 'form')
rlm@79:       this.registerFormCallbacks();
rlm@79:     else
rlm@79:       this.registerCallback(this.element);
rlm@79:   },
rlm@79: 
rlm@79:   onElementEvent: function() {
rlm@79:     var value = this.getValue();
rlm@79:     if (this.lastValue != value) {
rlm@79:       this.callback(this.element, value);
rlm@79:       this.lastValue = value;
rlm@79:     }
rlm@79:   },
rlm@79: 
rlm@79:   registerFormCallbacks: function() {
rlm@79:     Form.getElements(this.element).each(this.registerCallback, this);
rlm@79:   },
rlm@79: 
rlm@79:   registerCallback: function(element) {
rlm@79:     if (element.type) {
rlm@79:       switch (element.type.toLowerCase()) {
rlm@79:         case 'checkbox':
rlm@79:         case 'radio':
rlm@79:           Event.observe(element, 'click', this.onElementEvent.bind(this));
rlm@79:           break;
rlm@79:         default:
rlm@79:           Event.observe(element, 'change', this.onElementEvent.bind(this));
rlm@79:           break;
rlm@79:       }
rlm@79:     }
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
rlm@79:   getValue: function() {
rlm@79:     return Form.Element.getValue(this.element);
rlm@79:   }
rlm@79: });
rlm@79: 
rlm@79: Form.EventObserver = Class.create(Abstract.EventObserver, {
rlm@79:   getValue: function() {
rlm@79:     return Form.serialize(this.element);
rlm@79:   }
rlm@79: });
rlm@79: (function() {
rlm@79: 
rlm@79:   var Event = {
rlm@79:     KEY_BACKSPACE: 8,
rlm@79:     KEY_TAB:       9,
rlm@79:     KEY_RETURN:   13,
rlm@79:     KEY_ESC:      27,
rlm@79:     KEY_LEFT:     37,
rlm@79:     KEY_UP:       38,
rlm@79:     KEY_RIGHT:    39,
rlm@79:     KEY_DOWN:     40,
rlm@79:     KEY_DELETE:   46,
rlm@79:     KEY_HOME:     36,
rlm@79:     KEY_END:      35,
rlm@79:     KEY_PAGEUP:   33,
rlm@79:     KEY_PAGEDOWN: 34,
rlm@79:     KEY_INSERT:   45,
rlm@79: 
rlm@79:     cache: {}
rlm@79:   };
rlm@79: 
rlm@79:   var docEl = document.documentElement;
rlm@79:   var MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED = 'onmouseenter' in docEl
rlm@79:     && 'onmouseleave' in docEl;
rlm@79: 
rlm@79:   var _isButton;
rlm@79:   if (Prototype.Browser.IE) {
rlm@79:     var buttonMap = { 0: 1, 1: 4, 2: 2 };
rlm@79:     _isButton = function(event, code) {
rlm@79:       return event.button === buttonMap[code];
rlm@79:     };
rlm@79:   } else if (Prototype.Browser.WebKit) {
rlm@79:     _isButton = function(event, code) {
rlm@79:       switch (code) {
rlm@79:         case 0: return event.which == 1 && !event.metaKey;
rlm@79:         case 1: return event.which == 1 && event.metaKey;
rlm@79:         default: return false;
rlm@79:       }
rlm@79:     };
rlm@79:   } else {
rlm@79:     _isButton = function(event, code) {
rlm@79:       return event.which ? (event.which === code + 1) : (event.button === code);
rlm@79:     };
rlm@79:   }
rlm@79: 
rlm@79:   function isLeftClick(event)   { return _isButton(event, 0) }
rlm@79: 
rlm@79:   function isMiddleClick(event) { return _isButton(event, 1) }
rlm@79: 
rlm@79:   function isRightClick(event)  { return _isButton(event, 2) }
rlm@79: 
rlm@79:   function element(event) {
rlm@79:     event = Event.extend(event);
rlm@79: 
rlm@79:     var node = event.target, type = event.type,
rlm@79:      currentTarget = event.currentTarget;
rlm@79: 
rlm@79:     if (currentTarget && currentTarget.tagName) {
rlm@79:       if (type === 'load' || type === 'error' ||
rlm@79:         (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
rlm@79:           && currentTarget.type === 'radio'))
rlm@79:             node = currentTarget;
rlm@79:     }
rlm@79: 
rlm@79:     if (node.nodeType == Node.TEXT_NODE)
rlm@79:       node = node.parentNode;
rlm@79: 
rlm@79:     return Element.extend(node);
rlm@79:   }
rlm@79: 
rlm@79:   function findElement(event, expression) {
rlm@79:     var element = Event.element(event);
rlm@79:     if (!expression) return element;
rlm@79:     var elements = [element].concat(element.ancestors());
rlm@79:     return Selector.findElement(elements, expression, 0);
rlm@79:   }
rlm@79: 
rlm@79:   function pointer(event) {
rlm@79:     return { x: pointerX(event), y: pointerY(event) };
rlm@79:   }
rlm@79: 
rlm@79:   function pointerX(event) {
rlm@79:     var docElement = document.documentElement,
rlm@79:      body = document.body || { scrollLeft: 0 };
rlm@79: 
rlm@79:     return event.pageX || (event.clientX +
rlm@79:       (docElement.scrollLeft || body.scrollLeft) -
rlm@79:       (docElement.clientLeft || 0));
rlm@79:   }
rlm@79: 
rlm@79:   function pointerY(event) {
rlm@79:     var docElement = document.documentElement,
rlm@79:      body = document.body || { scrollTop: 0 };
rlm@79: 
rlm@79:     return  event.pageY || (event.clientY +
rlm@79:        (docElement.scrollTop || body.scrollTop) -
rlm@79:        (docElement.clientTop || 0));
rlm@79:   }
rlm@79: 
rlm@79: 
rlm@79:   function stop(event) {
rlm@79:     Event.extend(event);
rlm@79:     event.preventDefault();
rlm@79:     event.stopPropagation();
rlm@79: 
rlm@79:     event.stopped = true;
rlm@79:   }
rlm@79: 
rlm@79:   Event.Methods = {
rlm@79:     isLeftClick: isLeftClick,
rlm@79:     isMiddleClick: isMiddleClick,
rlm@79:     isRightClick: isRightClick,
rlm@79: 
rlm@79:     element: element,
rlm@79:     findElement: findElement,
rlm@79: 
rlm@79:     pointer: pointer,
rlm@79:     pointerX: pointerX,
rlm@79:     pointerY: pointerY,
rlm@79: 
rlm@79:     stop: stop
rlm@79:   };
rlm@79: 
rlm@79: 
rlm@79:   var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
rlm@79:     m[name] = Event.Methods[name].methodize();
rlm@79:     return m;
rlm@79:   });
rlm@79: 
rlm@79:   if (Prototype.Browser.IE) {
rlm@79:     function _relatedTarget(event) {
rlm@79:       var element;
rlm@79:       switch (event.type) {
rlm@79:         case 'mouseover': element = event.fromElement; break;
rlm@79:         case 'mouseout':  element = event.toElement;   break;
rlm@79:         default: return null;
rlm@79:       }
rlm@79:       return Element.extend(element);
rlm@79:     }
rlm@79: 
rlm@79:     Object.extend(methods, {
rlm@79:       stopPropagation: function() { this.cancelBubble = true },
rlm@79:       preventDefault:  function() { this.returnValue = false },
rlm@79:       inspect: function() { return '[object Event]' }
rlm@79:     });
rlm@79: 
rlm@79:     Event.extend = function(event, element) {
rlm@79:       if (!event) return false;
rlm@79:       if (event._extendedByPrototype) return event;
rlm@79: 
rlm@79:       event._extendedByPrototype = Prototype.emptyFunction;
rlm@79:       var pointer = Event.pointer(event);
rlm@79: 
rlm@79:       Object.extend(event, {
rlm@79:         target: event.srcElement || element,
rlm@79:         relatedTarget: _relatedTarget(event),
rlm@79:         pageX:  pointer.x,
rlm@79:         pageY:  pointer.y
rlm@79:       });
rlm@79: 
rlm@79:       return Object.extend(event, methods);
rlm@79:     };
rlm@79:   } else {
rlm@79:     Event.prototype = window.Event.prototype || document.createEvent('HTMLEvents').__proto__;
rlm@79:     Object.extend(Event.prototype, methods);
rlm@79:     Event.extend = Prototype.K;
rlm@79:   }
rlm@79: 
rlm@79:   function _createResponder(element, eventName, handler) {
rlm@79:     var registry = Element.retrieve(element, 'prototype_event_registry');
rlm@79: 
rlm@79:     if (Object.isUndefined(registry)) {
rlm@79:       CACHE.push(element);
rlm@79:       registry = Element.retrieve(element, 'prototype_event_registry', $H());
rlm@79:     }
rlm@79: 
rlm@79:     var respondersForEvent = registry.get(eventName);
rlm@79:     if (Object.isUndefined(respondersForEvent)) {
rlm@79:       respondersForEvent = [];
rlm@79:       registry.set(eventName, respondersForEvent);
rlm@79:     }
rlm@79: 
rlm@79:     if (respondersForEvent.pluck('handler').include(handler)) return false;
rlm@79: 
rlm@79:     var responder;
rlm@79:     if (eventName.include(":")) {
rlm@79:       responder = function(event) {
rlm@79:         if (Object.isUndefined(event.eventName))
rlm@79:           return false;
rlm@79: 
rlm@79:         if (event.eventName !== eventName)
rlm@79:           return false;
rlm@79: 
rlm@79:         Event.extend(event, element);
rlm@79:         handler.call(element, event);
rlm@79:       };
rlm@79:     } else {
rlm@79:       if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED &&
rlm@79:        (eventName === "mouseenter" || eventName === "mouseleave")) {
rlm@79:         if (eventName === "mouseenter" || eventName === "mouseleave") {
rlm@79:           responder = function(event) {
rlm@79:             Event.extend(event, element);
rlm@79: 
rlm@79:             var parent = event.relatedTarget;
rlm@79:             while (parent && parent !== element) {
rlm@79:               try { parent = parent.parentNode; }
rlm@79:               catch(e) { parent = element; }
rlm@79:             }
rlm@79: 
rlm@79:             if (parent === element) return;
rlm@79: 
rlm@79:             handler.call(element, event);
rlm@79:           };
rlm@79:         }
rlm@79:       } else {
rlm@79:         responder = function(event) {
rlm@79:           Event.extend(event, element);
rlm@79:           handler.call(element, event);
rlm@79:         };
rlm@79:       }
rlm@79:     }
rlm@79: 
rlm@79:     responder.handler = handler;
rlm@79:     respondersForEvent.push(responder);
rlm@79:     return responder;
rlm@79:   }
rlm@79: 
rlm@79:   function _destroyCache() {
rlm@79:     for (var i = 0, length = CACHE.length; i < length; i++) {
rlm@79:       Event.stopObserving(CACHE[i]);
rlm@79:       CACHE[i] = null;
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   var CACHE = [];
rlm@79: 
rlm@79:   if (Prototype.Browser.IE)
rlm@79:     window.attachEvent('onunload', _destroyCache);
rlm@79: 
rlm@79:   if (Prototype.Browser.WebKit)
rlm@79:     window.addEventListener('unload', Prototype.emptyFunction, false);
rlm@79: 
rlm@79: 
rlm@79:   var _getDOMEventName = Prototype.K;
rlm@79: 
rlm@79:   if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) {
rlm@79:     _getDOMEventName = function(eventName) {
rlm@79:       var translations = { mouseenter: "mouseover", mouseleave: "mouseout" };
rlm@79:       return eventName in translations ? translations[eventName] : eventName;
rlm@79:     };
rlm@79:   }
rlm@79: 
rlm@79:   function observe(element, eventName, handler) {
rlm@79:     element = $(element);
rlm@79: 
rlm@79:     var responder = _createResponder(element, eventName, handler);
rlm@79: 
rlm@79:     if (!responder) return element;
rlm@79: 
rlm@79:     if (eventName.include(':')) {
rlm@79:       if (element.addEventListener)
rlm@79:         element.addEventListener("dataavailable", responder, false);
rlm@79:       else {
rlm@79:         element.attachEvent("ondataavailable", responder);
rlm@79:         element.attachEvent("onfilterchange", responder);
rlm@79:       }
rlm@79:     } else {
rlm@79:       var actualEventName = _getDOMEventName(eventName);
rlm@79: 
rlm@79:       if (element.addEventListener)
rlm@79:         element.addEventListener(actualEventName, responder, false);
rlm@79:       else
rlm@79:         element.attachEvent("on" + actualEventName, responder);
rlm@79:     }
rlm@79: 
rlm@79:     return element;
rlm@79:   }
rlm@79: 
rlm@79:   function stopObserving(element, eventName, handler) {
rlm@79:     element = $(element);
rlm@79: 
rlm@79:     var registry = Element.retrieve(element, 'prototype_event_registry');
rlm@79: 
rlm@79:     if (Object.isUndefined(registry)) return element;
rlm@79: 
rlm@79:     if (eventName && !handler) {
rlm@79:       var responders = registry.get(eventName);
rlm@79: 
rlm@79:       if (Object.isUndefined(responders)) return element;
rlm@79: 
rlm@79:       responders.each( function(r) {
rlm@79:         Element.stopObserving(element, eventName, r.handler);
rlm@79:       });
rlm@79:       return element;
rlm@79:     } else if (!eventName) {
rlm@79:       registry.each( function(pair) {
rlm@79:         var eventName = pair.key, responders = pair.value;
rlm@79: 
rlm@79:         responders.each( function(r) {
rlm@79:           Element.stopObserving(element, eventName, r.handler);
rlm@79:         });
rlm@79:       });
rlm@79:       return element;
rlm@79:     }
rlm@79: 
rlm@79:     var responders = registry.get(eventName);
rlm@79: 
rlm@79:     if (!responders) return;
rlm@79: 
rlm@79:     var responder = responders.find( function(r) { return r.handler === handler; });
rlm@79:     if (!responder) return element;
rlm@79: 
rlm@79:     var actualEventName = _getDOMEventName(eventName);
rlm@79: 
rlm@79:     if (eventName.include(':')) {
rlm@79:       if (element.removeEventListener)
rlm@79:         element.removeEventListener("dataavailable", responder, false);
rlm@79:       else {
rlm@79:         element.detachEvent("ondataavailable", responder);
rlm@79:         element.detachEvent("onfilterchange",  responder);
rlm@79:       }
rlm@79:     } else {
rlm@79:       if (element.removeEventListener)
rlm@79:         element.removeEventListener(actualEventName, responder, false);
rlm@79:       else
rlm@79:         element.detachEvent('on' + actualEventName, responder);
rlm@79:     }
rlm@79: 
rlm@79:     registry.set(eventName, responders.without(responder));
rlm@79: 
rlm@79:     return element;
rlm@79:   }
rlm@79: 
rlm@79:   function fire(element, eventName, memo, bubble) {
rlm@79:     element = $(element);
rlm@79: 
rlm@79:     if (Object.isUndefined(bubble))
rlm@79:       bubble = true;
rlm@79: 
rlm@79:     if (element == document && document.createEvent && !element.dispatchEvent)
rlm@79:       element = document.documentElement;
rlm@79: 
rlm@79:     var event;
rlm@79:     if (document.createEvent) {
rlm@79:       event = document.createEvent('HTMLEvents');
rlm@79:       event.initEvent('dataavailable', true, true);
rlm@79:     } else {
rlm@79:       event = document.createEventObject();
rlm@79:       event.eventType = bubble ? 'ondataavailable' : 'onfilterchange';
rlm@79:     }
rlm@79: 
rlm@79:     event.eventName = eventName;
rlm@79:     event.memo = memo || { };
rlm@79: 
rlm@79:     if (document.createEvent)
rlm@79:       element.dispatchEvent(event);
rlm@79:     else
rlm@79:       element.fireEvent(event.eventType, event);
rlm@79: 
rlm@79:     return Event.extend(event);
rlm@79:   }
rlm@79: 
rlm@79: 
rlm@79:   Object.extend(Event, Event.Methods);
rlm@79: 
rlm@79:   Object.extend(Event, {
rlm@79:     fire:          fire,
rlm@79:     observe:       observe,
rlm@79:     stopObserving: stopObserving
rlm@79:   });
rlm@79: 
rlm@79:   Element.addMethods({
rlm@79:     fire:          fire,
rlm@79: 
rlm@79:     observe:       observe,
rlm@79: 
rlm@79:     stopObserving: stopObserving
rlm@79:   });
rlm@79: 
rlm@79:   Object.extend(document, {
rlm@79:     fire:          fire.methodize(),
rlm@79: 
rlm@79:     observe:       observe.methodize(),
rlm@79: 
rlm@79:     stopObserving: stopObserving.methodize(),
rlm@79: 
rlm@79:     loaded:        false
rlm@79:   });
rlm@79: 
rlm@79:   if (window.Event) Object.extend(window.Event, Event);
rlm@79:   else window.Event = Event;
rlm@79: })();
rlm@79: 
rlm@79: (function() {
rlm@79:   /* Support for the DOMContentLoaded event is based on work by Dan Webb,
rlm@79:      Matthias Miller, Dean Edwards, John Resig, and Diego Perini. */
rlm@79: 
rlm@79:   var timer;
rlm@79: 
rlm@79:   function fireContentLoadedEvent() {
rlm@79:     if (document.loaded) return;
rlm@79:     if (timer) window.clearTimeout(timer);
rlm@79:     document.loaded = true;
rlm@79:     document.fire('dom:loaded');
rlm@79:   }
rlm@79: 
rlm@79:   function checkReadyState() {
rlm@79:     if (document.readyState === 'complete') {
rlm@79:       document.stopObserving('readystatechange', checkReadyState);
rlm@79:       fireContentLoadedEvent();
rlm@79:     }
rlm@79:   }
rlm@79: 
rlm@79:   function pollDoScroll() {
rlm@79:     try { document.documentElement.doScroll('left'); }
rlm@79:     catch(e) {
rlm@79:       timer = pollDoScroll.defer();
rlm@79:       return;
rlm@79:     }
rlm@79:     fireContentLoadedEvent();
rlm@79:   }
rlm@79: 
rlm@79:   if (document.addEventListener) {
rlm@79:     document.addEventListener('DOMContentLoaded', fireContentLoadedEvent, false);
rlm@79:   } else {
rlm@79:     document.observe('readystatechange', checkReadyState);
rlm@79:     if (window == top)
rlm@79:       timer = pollDoScroll.defer();
rlm@79:   }
rlm@79: 
rlm@79:   Event.observe(window, 'load', fireContentLoadedEvent);
rlm@79: })();
rlm@79: 
rlm@79: Element.addMethods();
rlm@79: 
rlm@79: /*------------------------------- DEPRECATED -------------------------------*/
rlm@79: 
rlm@79: Hash.toQueryString = Object.toQueryString;
rlm@79: 
rlm@79: var Toggle = { display: Element.toggle };
rlm@79: 
rlm@79: Element.Methods.childOf = Element.Methods.descendantOf;
rlm@79: 
rlm@79: var Insertion = {
rlm@79:   Before: function(element, content) {
rlm@79:     return Element.insert(element, {before:content});
rlm@79:   },
rlm@79: 
rlm@79:   Top: function(element, content) {
rlm@79:     return Element.insert(element, {top:content});
rlm@79:   },
rlm@79: 
rlm@79:   Bottom: function(element, content) {
rlm@79:     return Element.insert(element, {bottom:content});
rlm@79:   },
rlm@79: 
rlm@79:   After: function(element, content) {
rlm@79:     return Element.insert(element, {after:content});
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: var $continue = new Error('"throw $continue" is deprecated, use "return" instead');
rlm@79: 
rlm@79: var Position = {
rlm@79:   includeScrollOffsets: false,
rlm@79: 
rlm@79:   prepare: function() {
rlm@79:     this.deltaX =  window.pageXOffset
rlm@79:                 || document.documentElement.scrollLeft
rlm@79:                 || document.body.scrollLeft
rlm@79:                 || 0;
rlm@79:     this.deltaY =  window.pageYOffset
rlm@79:                 || document.documentElement.scrollTop
rlm@79:                 || document.body.scrollTop
rlm@79:                 || 0;
rlm@79:   },
rlm@79: 
rlm@79:   within: function(element, x, y) {
rlm@79:     if (this.includeScrollOffsets)
rlm@79:       return this.withinIncludingScrolloffsets(element, x, y);
rlm@79:     this.xcomp = x;
rlm@79:     this.ycomp = y;
rlm@79:     this.offset = Element.cumulativeOffset(element);
rlm@79: 
rlm@79:     return (y >= this.offset[1] &&
rlm@79:             y <  this.offset[1] + element.offsetHeight &&
rlm@79:             x >= this.offset[0] &&
rlm@79:             x <  this.offset[0] + element.offsetWidth);
rlm@79:   },
rlm@79: 
rlm@79:   withinIncludingScrolloffsets: function(element, x, y) {
rlm@79:     var offsetcache = Element.cumulativeScrollOffset(element);
rlm@79: 
rlm@79:     this.xcomp = x + offsetcache[0] - this.deltaX;
rlm@79:     this.ycomp = y + offsetcache[1] - this.deltaY;
rlm@79:     this.offset = Element.cumulativeOffset(element);
rlm@79: 
rlm@79:     return (this.ycomp >= this.offset[1] &&
rlm@79:             this.ycomp <  this.offset[1] + element.offsetHeight &&
rlm@79:             this.xcomp >= this.offset[0] &&
rlm@79:             this.xcomp <  this.offset[0] + element.offsetWidth);
rlm@79:   },
rlm@79: 
rlm@79:   overlap: function(mode, element) {
rlm@79:     if (!mode) return 0;
rlm@79:     if (mode == 'vertical')
rlm@79:       return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
rlm@79:         element.offsetHeight;
rlm@79:     if (mode == 'horizontal')
rlm@79:       return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
rlm@79:         element.offsetWidth;
rlm@79:   },
rlm@79: 
rlm@79: 
rlm@79:   cumulativeOffset: Element.Methods.cumulativeOffset,
rlm@79: 
rlm@79:   positionedOffset: Element.Methods.positionedOffset,
rlm@79: 
rlm@79:   absolutize: function(element) {
rlm@79:     Position.prepare();
rlm@79:     return Element.absolutize(element);
rlm@79:   },
rlm@79: 
rlm@79:   relativize: function(element) {
rlm@79:     Position.prepare();
rlm@79:     return Element.relativize(element);
rlm@79:   },
rlm@79: 
rlm@79:   realOffset: Element.Methods.cumulativeScrollOffset,
rlm@79: 
rlm@79:   offsetParent: Element.Methods.getOffsetParent,
rlm@79: 
rlm@79:   page: Element.Methods.viewportOffset,
rlm@79: 
rlm@79:   clone: function(source, target, options) {
rlm@79:     options = options || { };
rlm@79:     return Element.clonePosition(target, source, options);
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: /*--------------------------------------------------------------------------*/
rlm@79: 
rlm@79: if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
rlm@79:   function iter(name) {
rlm@79:     return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
rlm@79:   }
rlm@79: 
rlm@79:   instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
rlm@79:   function(element, className) {
rlm@79:     className = className.toString().strip();
rlm@79:     var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
rlm@79:     return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
rlm@79:   } : function(element, className) {
rlm@79:     className = className.toString().strip();
rlm@79:     var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
rlm@79:     if (!classNames && !className) return elements;
rlm@79: 
rlm@79:     var nodes = $(element).getElementsByTagName('*');
rlm@79:     className = ' ' + className + ' ';
rlm@79: 
rlm@79:     for (var i = 0, child, cn; child = nodes[i]; i++) {
rlm@79:       if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
rlm@79:           (classNames && classNames.all(function(name) {
rlm@79:             return !name.toString().blank() && cn.include(' ' + name + ' ');
rlm@79:           }))))
rlm@79:         elements.push(Element.extend(child));
rlm@79:     }
rlm@79:     return elements;
rlm@79:   };
rlm@79: 
rlm@79:   return function(className, parentElement) {
rlm@79:     return $(parentElement || document.body).getElementsByClassName(className);
rlm@79:   };
rlm@79: }(Element.Methods);
rlm@79: 
rlm@79: /*--------------------------------------------------------------------------*/
rlm@79: 
rlm@79: Element.ClassNames = Class.create();
rlm@79: Element.ClassNames.prototype = {
rlm@79:   initialize: function(element) {
rlm@79:     this.element = $(element);
rlm@79:   },
rlm@79: 
rlm@79:   _each: function(iterator) {
rlm@79:     this.element.className.split(/\s+/).select(function(name) {
rlm@79:       return name.length > 0;
rlm@79:     })._each(iterator);
rlm@79:   },
rlm@79: 
rlm@79:   set: function(className) {
rlm@79:     this.element.className = className;
rlm@79:   },
rlm@79: 
rlm@79:   add: function(classNameToAdd) {
rlm@79:     if (this.include(classNameToAdd)) return;
rlm@79:     this.set($A(this).concat(classNameToAdd).join(' '));
rlm@79:   },
rlm@79: 
rlm@79:   remove: function(classNameToRemove) {
rlm@79:     if (!this.include(classNameToRemove)) return;
rlm@79:     this.set($A(this).without(classNameToRemove).join(' '));
rlm@79:   },
rlm@79: 
rlm@79:   toString: function() {
rlm@79:     return $A(this).join(' ');
rlm@79:   }
rlm@79: };
rlm@79: 
rlm@79: Object.extend(Element.ClassNames.prototype, Enumerable);
rlm@79: 
rlm@79: /*--------------------------------------------------------------------------*/