User:Gawdl3y/Scripts/prototype.js

/* Prototype JavaScript framework, version 1.6.0.3 * (c) 2005-2008 Sam Stephenson * * Prototype is freely distributable under the terms of an MIT-style license. * For details, see the Prototype web site: http://www.prototypejs.org/ * *--*/

var Prototype = { Version: '1.6.0.3',

Browser: { IE:    !!(window.attachEvent &&      navigator.userAgent.indexOf('Opera') === -1), Opera: navigator.userAgent.indexOf('Opera') > -1, WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1, Gecko: navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') === -1, MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/) },

BrowserFeatures: { XPath: !!document.evaluate, SelectorsAPI: !!document.querySelector, ElementExtensions: !!window.HTMLElement, SpecificElementExtensions: document.createElement('div')['__proto__'] && document.createElement('div')['__proto__'] !== document.createElement('form')['__proto__'] },

ScriptFragment: ']*>([\\S\\s]*?)<\/script>', JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

emptyFunction: function { }, K: function(x) { return x } };

if (Prototype.Browser.MobileSafari) Prototype.BrowserFeatures.SpecificElementExtensions = false;

/* Based on Alex Arnell's inheritance implementation. */ var Class = { create: function { var parent = null, properties = $A(arguments); if (Object.isFunction(properties[0])) parent = properties.shift;

function klass { this.initialize.apply(this, arguments); }

Object.extend(klass, Class.Methods); klass.superclass = parent; klass.subclasses = [];

if (parent) { var subclass = function { }; subclass.prototype = parent.prototype; klass.prototype = new subclass; parent.subclasses.push(klass); }

for (var i = 0; i < properties.length; i++) klass.addMethods(properties[i]);

if (!klass.prototype.initialize) klass.prototype.initialize = Prototype.emptyFunction;

klass.prototype.constructor = klass;

return klass; } };

Class.Methods = { addMethods: function(source) { var ancestor  = this.superclass && this.superclass.prototype; var properties = Object.keys(source);

if (!Object.keys({ toString: true }).length) properties.push("toString", "valueOf");

for (var i = 0, length = properties.length; i < length; i++) { var property = properties[i], value = source[property]; if (ancestor && Object.isFunction(value) &&         value.argumentNames.first == "$super") { var method = value; value = (function(m) {         return function { return ancestor[m].apply(this, arguments) };        })(property).wrap(method);

value.valueOf = method.valueOf.bind(method); value.toString = method.toString.bind(method); }     this.prototype[property] = value; }

return this; } };

var Abstract = { };

Object.extend = function(destination, source) { for (var property in source) destination[property] = source[property]; return destination; };

Object.extend(Object, { inspect: function(object) {    try {      if (Object.isUndefined(object)) return 'undefined';      if (object === null) return 'null';      return object.inspect ? object.inspect : String(object);    } catch (e) {      if (e instanceof RangeError) return '...';      throw e;    }  },

toJSON: function(object) { var type = typeof object; switch (type) { case 'undefined': case 'function': case 'unknown': return; case 'boolean': return object.toString; }

if (object === null) return 'null'; if (object.toJSON) return object.toJSON; if (Object.isElement(object)) return;

var results = []; for (var property in object) { var value = Object.toJSON(object[property]); if (!Object.isUndefined(value)) results.push(property.toJSON + ': ' + value); }

return '{' + results.join(', ') + '}'; },

toQueryString: function(object) { return $H(object).toQueryString; },

toHTML: function(object) { return object && object.toHTML ? object.toHTML : String.interpret(object); },

keys: function(object) { var keys = []; for (var property in object) keys.push(property); return keys; },

values: function(object) { var values = []; for (var property in object) values.push(object[property]); return values; },

clone: function(object) { return Object.extend({ }, object); },

isElement: function(object) { return !!(object && object.nodeType == 1); },

isArray: function(object) { return object != null && typeof object == "object" && 'splice' in object && 'join' in object; },

isHash: function(object) { return object instanceof Hash; },

isFunction: function(object) { return typeof object == "function"; },

isString: function(object) { return typeof object == "string"; },

isNumber: function(object) { return typeof object == "number"; },

isUndefined: function(object) { return typeof object == "undefined"; } });

Object.extend(Function.prototype, { argumentNames: function {    var names = this.toString.match(/^[\s\(]*function[^(]*\(([^\)]*)\)/)[1] .replace(/\s+/g, '').split(','); return names.length == 1 && !names[0] ? [] : names; },

bind: function { if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this; var __method = this, args = $A(arguments), object = args.shift; return function { return __method.apply(object, args.concat($A(arguments))); } },

bindAsEventListener: function { var __method = this, args = $A(arguments), object = args.shift; return function(event) { return __method.apply(object, [event || window.event].concat(args)); } },

curry: function { if (!arguments.length) return this; var __method = this, args = $A(arguments); return function { return __method.apply(this, args.concat($A(arguments))); } },

delay: function { var __method = this, args = $A(arguments), timeout = args.shift * 1000; return window.setTimeout(function {     return __method.apply(__method, args);    }, timeout); },

defer: function { var args = [0.01].concat($A(arguments)); return this.delay.apply(this, args); },

wrap: function(wrapper) { var __method = this; return function { return wrapper.apply(this, [__method.bind(this)].concat($A(arguments))); } },

methodize: function { if (this._methodized) return this._methodized; var __method = this; return this._methodized = function { return __method.apply(null, [this].concat($A(arguments))); }; } });

Date.prototype.toJSON = function { return '"' + this.getUTCFullYear + '-' +   (this.getUTCMonth + 1).toPaddedString(2) + '-' +    this.getUTCDate.toPaddedString(2) + 'T' +    this.getUTCHours.toPaddedString(2) + ':' +    this.getUTCMinutes.toPaddedString(2) + ':' +    this.getUTCSeconds.toPaddedString(2) + 'Z"'; };

var Try = { these: function { var returnValue;

for (var i = 0, length = arguments.length; i < length; i++) { var lambda = arguments[i]; try { returnValue = lambda; break; } catch (e) { } }

return returnValue; } };

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) { return String(str).replace(/([.*+?^=!:${}|[\]\/\\])/g, '\\$1'); };

/*--*/

var PeriodicalExecuter = Class.create({ initialize: function(callback, frequency) {    this.callback = callback;    this.frequency = frequency;    this.currentlyExecuting = false;

this.registerCallback; },

registerCallback: function { this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000); },

execute: function { this.callback(this); },

stop: function { if (!this.timer) return; clearInterval(this.timer); this.timer = null; },

onTimerEvent: function { if (!this.currentlyExecuting) { try { this.currentlyExecuting = true; this.execute; } finally { this.currentlyExecuting = false; }   }  } }); Object.extend(String, { interpret: function(value) { return value == null ? '' : String(value); }, specialChar: { '\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '\\': '\\\\' } });

Object.extend(String.prototype, { gsub: function(pattern, replacement) {    var result = '', source = this, match;    replacement = arguments.callee.prepareReplacement(replacement);

while (source.length > 0) { if (match = source.match(pattern)) { result += source.slice(0, match.index); result += String.interpret(replacement(match)); source = source.slice(match.index + match[0].length); } else { result += source, source = ''; }   }    return result; },

sub: function(pattern, replacement, count) { replacement = this.gsub.prepareReplacement(replacement); count = Object.isUndefined(count) ? 1 : count;

return this.gsub(pattern, function(match) {     if (--count < 0) return match[0];      return replacement(match);    }); },

scan: function(pattern, iterator) { this.gsub(pattern, iterator); return String(this); },

truncate: function(length, truncation) { length = length || 30; truncation = Object.isUndefined(truncation) ? '...' : truncation; return this.length > length ? this.slice(0, length - truncation.length) + truncation : String(this); },

strip: function { return this.replace(/^\s+/, ).replace(/\s+$/, ); },

stripTags: function { return this.replace(/<\/?[^>]+>/gi, ''); },

stripScripts: function { return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), ''); },

extractScripts: function { var matchAll = new RegExp(Prototype.ScriptFragment, 'img'); var matchOne = new RegExp(Prototype.ScriptFragment, 'im'); return (this.match(matchAll) || []).map(function(scriptTag) {     return (scriptTag.match(matchOne) || [, ])[1];    }); },

evalScripts: function { return this.extractScripts.map(function(script) { return eval(script) }); },

escapeHTML: function { var self = arguments.callee; self.text.data = this; return self.div.innerHTML; },

unescapeHTML: function { var div = new Element('div'); div.innerHTML = this.stripTags; return div.childNodes[0] ? (div.childNodes.length > 1 ?     $A(div.childNodes).inject(, function(memo, node) { return memo+node.nodeValue }) :      div.childNodes[0].nodeValue) : ; },

toQueryParams: function(separator) { var match = this.strip.match(/([^?#]*)(#.*)?$/); if (!match) return { };

return match[1].split(separator || '&').inject({ }, function(hash, pair) {     if ((pair = pair.split('='))[0]) {        var key = decodeURIComponent(pair.shift);        var value = pair.length > 1 ? pair.join('=') : pair[0];        if (value != undefined) value = decodeURIComponent(value);

if (key in hash) { if (!Object.isArray(hash[key])) hash[key] = [hash[key]]; hash[key].push(value); }       else hash[key] = value; }     return hash; }); },

toArray: function { return this.split(''); },

succ: function { return this.slice(0, this.length - 1) + String.fromCharCode(this.charCodeAt(this.length - 1) + 1); },

times: function(count) { return count < 1 ? '' : new Array(count + 1).join(this); },

camelize: function { var parts = this.split('-'), len = parts.length; if (len == 1) return parts[0];

var camelized = this.charAt(0) == '-' ? parts[0].charAt(0).toUpperCase + parts[0].substring(1) : parts[0];

for (var i = 1; i < len; i++) camelized += parts[i].charAt(0).toUpperCase + parts[i].substring(1);

return camelized; },

capitalize: function { return this.charAt(0).toUpperCase + this.substring(1).toLowerCase; },

underscore: function { return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase; },

dasherize: function { return this.gsub(/_/,'-'); },

inspect: function(useDoubleQuotes) { var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {     var character = String.specialChar[match[0]];      return character ? character : '\\u00' + match[0].charCodeAt.toPaddedString(2, 16);    }); if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"'; return "'" + escapedString.replace(/'/g, '\\\'') + "'"; },

toJSON: function { return this.inspect(true); },

unfilterJSON: function(filter) { return this.sub(filter || Prototype.JSONFilter, '#{1}'); },

isJSON: function { var str = this; if (str.blank) return false; str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');   return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);  },

evalJSON: function(sanitize) { var json = this.unfilterJSON; try { if (!sanitize || json.isJSON) return eval('(' + json + ')'); } catch (e) { } throw new SyntaxError('Badly formed JSON string: ' + this.inspect); },

include: function(pattern) { return this.indexOf(pattern) > -1; },

startsWith: function(pattern) { return this.indexOf(pattern) === 0; },

endsWith: function(pattern) { var d = this.length - pattern.length; return d >= 0 && this.lastIndexOf(pattern) === d; },

empty: function { return this == ''; },

blank: function { return /^\s*$/.test(this); },

interpolate: function(object, pattern) { return new Template(this, pattern).evaluate(object); } });

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, { escapeHTML: function {    return this.replace(/&/g,'&amp;').replace(//g,'&gt;');  },  unescapeHTML: function {    return this.stripTags.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');  } });

String.prototype.gsub.prepareReplacement = function(replacement) { if (Object.isFunction(replacement)) return replacement; var template = new Template(replacement); return function(match) { return template.evaluate(match) }; };

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, { div:  document.createElement('div'),  text: document.createTextNode('') });

String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.text);

var Template = Class.create({ initialize: function(template, pattern) {    this.template = template.toString;    this.pattern = pattern || Template.Pattern;  },

evaluate: function(object) { if (Object.isFunction(object.toTemplateReplacements)) object = object.toTemplateReplacements;

return this.template.gsub(this.pattern, function(match) {     if (object == null) return '';

var before = match[1] || ''; if (before == '\\') return match[2];

var ctx = object, expr = match[3]; var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/; match = pattern.exec(expr); if (match == null) return before;

while (match != null) { var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1]; ctx = ctx[comp]; if (null == ctx || '' == match[3]) break; expr = expr.substring('[' == match[3] ? match[1].length : match[0].length); match = pattern.exec(expr); }

return before + String.interpret(ctx); }); } }); Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = { each: function(iterator, context) { var index = 0; try { this._each(function(value) {       iterator.call(context, value, index++);      }); } catch (e) { if (e != $break) throw e;   } return this; },

eachSlice: function(number, iterator, context) { var index = -number, slices = [], array = this.toArray; if (number < 1) return array; while ((index += number) < array.length) slices.push(array.slice(index, index+number)); return slices.collect(iterator, context); },

all: function(iterator, context) { iterator = iterator || Prototype.K;   var result = true; this.each(function(value, index) {     result = result && !!iterator.call(context, value, index);      if (!result) throw $break;    }); return result; },

any: function(iterator, context) { iterator = iterator || Prototype.K;   var result = false; this.each(function(value, index) {     if (result = !!iterator.call(context, value, index))        throw $break;    }); return result; },

collect: function(iterator, context) { iterator = iterator || Prototype.K;   var results = []; this.each(function(value, index) {     results.push(iterator.call(context, value, index));    }); return results; },

detect: function(iterator, context) { var result; this.each(function(value, index) {     if (iterator.call(context, value, index)) {        result = value;        throw $break;      }    }); return result; },

findAll: function(iterator, context) { var results = []; this.each(function(value, index) {     if (iterator.call(context, value, index))        results.push(value);    }); return results; },

grep: function(filter, iterator, context) { iterator = iterator || Prototype.K;   var results = [];

if (Object.isString(filter)) filter = new RegExp(filter);

this.each(function(value, index) {     if (filter.match(value))        results.push(iterator.call(context, value, index));    }); return results; },

include: function(object) { if (Object.isFunction(this.indexOf)) if (this.indexOf(object) != -1) return true;

var found = false; this.each(function(value) {     if (value == object) {        found = true;        throw $break;      }    }); return found; },

inGroupsOf: function(number, fillWith) { fillWith = Object.isUndefined(fillWith) ? null : fillWith; return this.eachSlice(number, function(slice) {     while(slice.length < number) slice.push(fillWith);      return slice;    }); },

inject: function(memo, iterator, context) { this.each(function(value, index) {     memo = iterator.call(context, memo, value, index);    }); return memo; },

invoke: function(method) { var args = $A(arguments).slice(1); return this.map(function(value) {     return value[method].apply(value, args);    }); },

max: function(iterator, context) { iterator = iterator || Prototype.K;   var result; this.each(function(value, index) {     value = iterator.call(context, value, index);      if (result == null || value >= result)        result = value;    }); return result; },

min: function(iterator, context) { iterator = iterator || Prototype.K;   var result; this.each(function(value, index) {     value = iterator.call(context, value, index);      if (result == null || value < result)        result = value;    }); return result; },

partition: function(iterator, context) { iterator = iterator || Prototype.K;   var trues = [], falses = []; this.each(function(value, index) {     (iterator.call(context, value, index) ? trues : falses).push(value);   }); return [trues, falses]; },

pluck: function(property) { var results = []; this.each(function(value) {     results.push(value[property]);    }); return results; },

reject: function(iterator, context) { var results = []; this.each(function(value, index) {     if (!iterator.call(context, value, index))        results.push(value);    }); return results; },

sortBy: function(iterator, context) { return this.map(function(value, index) {     return {        value: value,        criteria: iterator.call(context, value, index)      };    }).sort(function(left, right) {      var a = left.criteria, b = right.criteria;      return a < b ? -1 : a > b ? 1 : 0;    }).pluck('value'); },

toArray: function { return this.map; },

zip: function { var iterator = Prototype.K, args = $A(arguments); if (Object.isFunction(args.last)) iterator = args.pop;

var collections = [this].concat(args).map($A); return this.map(function(value, index) {     return iterator(collections.pluck(index));    }); },

size: function { return this.toArray.length; },

inspect: function { return '#'; } };

Object.extend(Enumerable, { map:     Enumerable.collect,  find:    Enumerable.detect,  select:  Enumerable.findAll,  filter:  Enumerable.findAll,  member:  Enumerable.include,  entries: Enumerable.toArray,  every:   Enumerable.all,  some:    Enumerable.any }); function $A(iterable) { if (!iterable) return []; if (iterable.toArray) return iterable.toArray; var length = iterable.length || 0, results = new Array(length); while (length--) results[length] = iterable[length]; return results; }

if (Prototype.Browser.WebKit) { $A = function(iterable) { if (!iterable) return []; // In Safari, only use the `toArray` method if it's not a NodeList. // A NodeList is a function, has an function `item` property, and a numeric // `length` property. Adapted from Google Doctype. if (!(typeof iterable === 'function' && typeof iterable.length === 'number' && typeof iterable.item === 'function') && iterable.toArray) return iterable.toArray; var length = iterable.length || 0, results = new Array(length); while (length--) results[length] = iterable[length]; return results; }; }

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, { _each: function(iterator) {    for (var i = 0, length = this.length; i < length; i++)      iterator(this[i]);  },

clear: function { this.length = 0; return this; },

first: function { return this[0]; },

last: function { return this[this.length - 1]; },

compact: function { return this.select(function(value) {     return value != null;    }); },

flatten: function { return this.inject([], function(array, value) {     return array.concat(Object.isArray(value) ? value.flatten : [value]);   }); },

without: function { var values = $A(arguments); return this.select(function(value) {     return !values.include(value);    }); },

reverse: function(inline) { return (inline !== false ? this : this.toArray)._reverse; },

reduce: function { return this.length > 1 ? this : this[0]; },

uniq: function(sorted) { return this.inject([], function(array, value, index) {     if (0 == index || (sorted ? array.last != value : !array.include(value)))        array.push(value);      return array;    }); },

intersect: function(array) { return this.uniq.findAll(function(item) {     return array.detect(function(value) { return item === value });    }); },

clone: function { return [].concat(this); },

size: function { return this.length; },

inspect: function { return '[' + this.map(Object.inspect).join(', ') + ']'; },

toJSON: function { var results = []; this.each(function(object) {     var value = Object.toJSON(object);      if (!Object.isUndefined(value)) results.push(value);    }); return '[' + results.join(', ') + ']'; } });

// use native browser JS 1.6 implementation if available if (Object.isFunction(Array.prototype.forEach)) Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) { i || (i = 0); var length = this.length; if (i < 0) i = length + i; for (i < length; i++) if (this[i] === item) return i; return -1; };

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) { i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1; var n = this.slice(0, i).reverse.indexOf(item); return (n < 0) ? n : i - n - 1; };

Array.prototype.toArray = Array.prototype.clone;

function $w(string) { if (!Object.isString(string)) return []; string = string.strip; return string ? string.split(/\s+/) : []; }

if (Prototype.Browser.Opera){ Array.prototype.concat = function { var array = []; for (var i = 0, length = this.length; i < length; i++) array.push(this[i]); for (var i = 0, length = arguments.length; i < length; i++) { if (Object.isArray(arguments[i])) { for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++) array.push(arguments[i][j]); } else { array.push(arguments[i]); }   }    return array; }; } Object.extend(Number.prototype, { toColorPart: function {    return this.toPaddedString(2, 16);  },

succ: function { return this + 1; },

times: function(iterator, context) { $R(0, this, true).each(iterator, context); return this; },

toPaddedString: function(length, radix) { var string = this.toString(radix || 10); return '0'.times(length - string.length) + string; },

toJSON: function { return isFinite(this) ? this.toString : 'null'; } });

$w('abs round ceil floor').each(function(method){ Number.prototype[method] = Math[method].methodize; }); function $H(object) { return new Hash(object); };

var Hash = Class.create(Enumerable, (function {

function toQueryPair(key, value) { if (Object.isUndefined(value)) return key; return key + '=' + encodeURIComponent(String.interpret(value)); }

return { initialize: function(object) { this._object = Object.isHash(object) ? object.toObject : Object.clone(object); },

_each: function(iterator) { for (var key in this._object) { var value = this._object[key], pair = [key, value]; pair.key = key; pair.value = value; iterator(pair); }   },

set: function(key, value) { return this._object[key] = value; },

get: function(key) { // simulating poorly supported hasOwnProperty if (this._object[key] !== Object.prototype[key]) return this._object[key]; },

unset: function(key) { var value = this._object[key]; delete this._object[key]; return value; },

toObject: function { return Object.clone(this._object); },

keys: function { return this.pluck('key'); },

values: function { return this.pluck('value'); },

index: function(value) { var match = this.detect(function(pair) {       return pair.value === value;      }); return match && match.key; },

merge: function(object) { return this.clone.update(object); },

update: function(object) { return new Hash(object).inject(this, function(result, pair) {       result.set(pair.key, pair.value);        return result;      }); },

toQueryString: function { return this.inject([], function(results, pair) {       var key = encodeURIComponent(pair.key), values = pair.value;

if (values && typeof values == 'object') { if (Object.isArray(values)) return results.concat(values.map(toQueryPair.curry(key))); } else results.push(toQueryPair(key, values)); return results; }).join('&');   },

inspect: function { return '#'; },

toJSON: function { return Object.toJSON(this.toObject); },

clone: function { return new Hash(this); } } }));

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject; Hash.from = $H; var ObjectRange = Class.create(Enumerable, { initialize: function(start, end, exclusive) {    this.start = start;    this.end = end;    this.exclusive = exclusive;  },

_each: function(iterator) { var value = this.start; while (this.include(value)) { iterator(value); value = value.succ; } },

include: function(value) { if (value < this.start) return false; if (this.exclusive) return value < this.end; return value <= this.end; } });

var $R = function(start, end, exclusive) { return new ObjectRange(start, end, exclusive); };

var Ajax = { getTransport: function { return Try.these(     function {return new XMLHttpRequest},      function {return new ActiveXObject('Msxml2.XMLHTTP')},      function {return new ActiveXObject('Microsoft.XMLHTTP')}    ) || false; },

activeRequestCount: 0 };

Ajax.Responders = { responders: [],

_each: function(iterator) { this.responders._each(iterator); },

register: function(responder) { if (!this.include(responder)) this.responders.push(responder); },

unregister: function(responder) { this.responders = this.responders.without(responder); },

dispatch: function(callback, request, transport, json) { this.each(function(responder) {     if (Object.isFunction(responder[callback])) {        try {          responder[callback].apply(responder, [request, transport, json]);        } catch (e) { }      }    }); } };

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({ onCreate:   function { Ajax.activeRequestCount++ },  onComplete: function { Ajax.activeRequestCount-- } });

Ajax.Base = Class.create({ initialize: function(options) {    this.options = {      method:       'post',      asynchronous: true,      contentType:  'application/x-www-form-urlencoded',      encoding:     'UTF-8',      parameters:   '',      evalJSON:     true,      evalJS:       true    };    Object.extend(this.options, options || { });

this.options.method = this.options.method.toLowerCase;

if (Object.isString(this.options.parameters)) this.options.parameters = this.options.parameters.toQueryParams; else if (Object.isHash(this.options.parameters)) this.options.parameters = this.options.parameters.toObject; } });

Ajax.Request = Class.create(Ajax.Base, { _complete: false,

initialize: function($super, url, options) { $super(options); this.transport = Ajax.getTransport; this.request(url); },

request: function(url) { this.url = url; this.method = this.options.method; var params = Object.clone(this.options.parameters);

if (!['get', 'post'].include(this.method)) { // simulate other verbs over post params['_method'] = this.method; this.method = 'post'; }

this.parameters = params;

if (params = Object.toQueryString(params)) { // when GET, append parameters to URL if (this.method == 'get') this.url += (this.url.include('?') ? '&' : '?') + params; else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) params += '&_='; }

try { var response = new Ajax.Response(this); if (this.options.onCreate) this.options.onCreate(response); Ajax.Responders.dispatch('onCreate', this, response);

this.transport.open(this.method.toUpperCase, this.url,       this.options.asynchronous);

if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

this.transport.onreadystatechange = this.onStateChange.bind(this); this.setRequestHeaders;

this.body = this.method == 'post' ? (this.options.postBody || params) : null; this.transport.send(this.body);

/* Force Firefox to handle ready state 4 for synchronous requests */ if (!this.options.asynchronous && this.transport.overrideMimeType) this.onStateChange;

}   catch (e) { this.dispatchException(e); } },

onStateChange: function { var readyState = this.transport.readyState; if (readyState > 1 && !((readyState == 4) && this._complete)) this.respondToReadyState(this.transport.readyState); },

setRequestHeaders: function { var headers = { 'X-Requested-With': 'XMLHttpRequest', 'X-Prototype-Version': Prototype.Version, 'Accept': 'text/javascript, text/html, application/xml, text/xml, */*' };

if (this.method == 'post') { headers['Content-type'] = this.options.contentType + (this.options.encoding ? '; charset=' + this.options.encoding : '');

/* Force "Connection: close" for older Mozilla browsers to work * around a bug where XMLHttpRequest sends an incorrect * Content-length header. See Mozilla Bugzilla #246651. */     if (this.transport.overrideMimeType &&          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005) headers['Connection'] = 'close'; }

// user-defined headers if (typeof this.options.requestHeaders == 'object') { var extras = this.options.requestHeaders;

if (Object.isFunction(extras.push)) for (var i = 0, length = extras.length; i < length; i += 2) headers[extras[i]] = extras[i+1]; else $H(extras).each(function(pair) { headers[pair.key] = pair.value }); }

for (var name in headers) this.transport.setRequestHeader(name, headers[name]); },

success: function { var status = this.getStatus; return !status || (status >= 200 && status < 300); },

getStatus: function { try { return this.transport.status || 0; } catch (e) { return 0 } },

respondToReadyState: function(readyState) { var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

if (state == 'Complete') { try { this._complete = true; (this.options['on' + response.status]        || this.options['on' + (this.success ? 'Success' : 'Failure')]        || Prototype.emptyFunction)(response, response.headerJSON); } catch (e) { this.dispatchException(e); }

var contentType = response.getHeader('Content-type'); if (this.options.evalJS == 'force'         || (this.options.evalJS && this.isSameOrigin && contentType && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(.*)?\s*$/i))) this.evalResponse; }

try { (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON); Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON); } catch (e) { this.dispatchException(e); }

if (state == 'Complete') { // avoid memory leak in MSIE: clean up     this.transport.onreadystatechange = Prototype.emptyFunction; } },

isSameOrigin: function { var m = this.url.match(/^\s*https?:\/\/[^\/]*/); return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({ protocol: location.protocol, domain: document.domain, port: location.port ? ':' + location.port : '' })); },

getHeader: function(name) { try { return this.transport.getResponseHeader(name) || null; } catch (e) { return null } },

evalResponse: function { try { return eval((this.transport.responseText || '').unfilterJSON); } catch (e) { this.dispatchException(e); } },

dispatchException: function(exception) { (this.options.onException || Prototype.emptyFunction)(this, exception); Ajax.Responders.dispatch('onException', this, exception); } });

Ajax.Request.Events = ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({ initialize: function(request){    this.request = request;    var transport  = this.transport  = request.transport,        readyState = this.readyState = transport.readyState;

if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) { this.status      = this.getStatus; this.statusText  = this.getStatusText; this.responseText = String.interpret(transport.responseText); this.headerJSON  = this._getHeaderJSON; }

if(readyState == 4) { var xml = transport.responseXML; this.responseXML = Object.isUndefined(xml) ? null : xml; this.responseJSON = this._getResponseJSON; } },

status:     0, statusText: '',

getStatus: Ajax.Request.prototype.getStatus,

getStatusText: function { try { return this.transport.statusText || ''; } catch (e) { return '' } },

getHeader: Ajax.Request.prototype.getHeader,

getAllHeaders: function { try { return this.getAllResponseHeaders; } catch (e) { return null } },

getResponseHeader: function(name) { return this.transport.getResponseHeader(name); },

getAllResponseHeaders: function { return this.transport.getAllResponseHeaders; },

_getHeaderJSON: function { var json = this.getHeader('X-JSON'); if (!json) return null; json = decodeURIComponent(escape(json)); try { return json.evalJSON(this.request.options.sanitizeJSON ||       !this.request.isSameOrigin); } catch (e) { this.request.dispatchException(e); } },

_getResponseJSON: function { var options = this.request.options; if (!options.evalJSON || (options.evalJSON != 'force' && !(this.getHeader('Content-type') || '').include('application/json')) ||       this.responseText.blank) return null; try { return this.responseText.evalJSON(options.sanitizeJSON ||       !this.request.isSameOrigin); } catch (e) { this.request.dispatchException(e); } } });

Ajax.Updater = Class.create(Ajax.Request, { initialize: function($super, container, url, options) {    this.container = {      success: (container.success || container),      failure: (container.failure || (container.success ? null : container))    };

options = Object.clone(options); var onComplete = options.onComplete; options.onComplete = (function(response, json) {     this.updateContent(response.responseText);      if (Object.isFunction(onComplete)) onComplete(response, json);    }).bind(this);

$super(url, options); },

updateContent: function(responseText) { var receiver = this.container[this.success ? 'success' : 'failure'], options = this.options;

if (!options.evalScripts) responseText = responseText.stripScripts;

if (receiver = $(receiver)) { if (options.insertion) { if (Object.isString(options.insertion)) { var insertion = { }; insertion[options.insertion] = responseText; receiver.insert(insertion); }       else options.insertion(receiver, responseText); }     else receiver.update(responseText); } } });

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, { initialize: function($super, container, url, options) {    $super(options);    this.onComplete = this.options.onComplete;

this.frequency = (this.options.frequency || 2); this.decay = (this.options.decay || 1);

this.updater = { }; this.container = container; this.url = url;

this.start; },

start: function { this.options.onComplete = this.updateComplete.bind(this); this.onTimerEvent; },

stop: function { this.updater.options.onComplete = undefined; clearTimeout(this.timer); (this.onComplete || Prototype.emptyFunction).apply(this, arguments); },

updateComplete: function(response) { if (this.options.decay) { this.decay = (response.responseText == this.lastText ?       this.decay * this.options.decay : 1);

this.lastText = response.responseText; }   this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency); },

onTimerEvent: function { this.updater = new Ajax.Updater(this.container, this.url, this.options); } }); function $(element) { if (arguments.length > 1) {    for (var i = 0, elements = [], length = arguments.length; i < length; i++)      elements.push($(arguments[i]));    return elements;  }  if (Object.isString(element))    element = document.getElementById(element);  return Element.extend(element); }

if (Prototype.BrowserFeatures.XPath) { document._getElementsByXPath = function(expression, parentElement) { var results = []; var query = document.evaluate(expression, $(parentElement) || document,     null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null); for (var i = 0, length = query.snapshotLength; i < length; i++) results.push(Element.extend(query.snapshotItem(i))); return results; }; }

/*--*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) { // DOM level 2 ECMAScript Language Binding Object.extend(Node, {   ELEMENT_NODE: 1,    ATTRIBUTE_NODE: 2,    TEXT_NODE: 3,    CDATA_SECTION_NODE: 4,    ENTITY_REFERENCE_NODE: 5,    ENTITY_NODE: 6,    PROCESSING_INSTRUCTION_NODE: 7,    COMMENT_NODE: 8,    DOCUMENT_NODE: 9,    DOCUMENT_TYPE_NODE: 10,    DOCUMENT_FRAGMENT_NODE: 11,    NOTATION_NODE: 12  }); }

(function { var element = this.Element;  this.Element = function(tagName, attributes) {    attributes = attributes || { };    tagName = tagName.toLowerCase;    var cache = Element.cache;    if (Prototype.Browser.IE && attributes.name) {      tagName = '<' + tagName + ' name="' + attributes.name + '">';      delete attributes.name;      return Element.writeAttribute(document.createElement(tagName), attributes);    }    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);  };  Object.extend(this.Element, element || { });  if (element) this.Element.prototype = element.prototype; }).call(window);

Element.cache = { };

Element.Methods = { visible: function(element) { return $(element).style.display != 'none'; },

toggle: function(element) { element = $(element); Element[Element.visible(element) ? 'hide' : 'show'](element); return element; },

hide: function(element) { element = $(element); element.style.display = 'none'; return element; },

show: function(element) { element = $(element); element.style.display = ''; return element; },

remove: function(element) { element = $(element); element.parentNode.removeChild(element); return element; },

update: function(element, content) { element = $(element); if (content && content.toElement) content = content.toElement; if (Object.isElement(content)) return element.update.insert(content); content = Object.toHTML(content); element.innerHTML = content.stripScripts; content.evalScripts.bind(content).defer; return element; },

replace: function(element, content) { element = $(element); if (content && content.toElement) content = content.toElement; else if (!Object.isElement(content)) { content = Object.toHTML(content); var range = element.ownerDocument.createRange; range.selectNode(element); content.evalScripts.bind(content).defer; content = range.createContextualFragment(content.stripScripts); }   element.parentNode.replaceChild(content, element); return element; },

insert: function(element, insertions) { element = $(element);

if (Object.isString(insertions) || Object.isNumber(insertions) ||       Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML))) insertions = {bottom:insertions};

var content, insert, tagName, childNodes;

for (var position in insertions) { content = insertions[position]; position = position.toLowerCase; insert = Element._insertionTranslations[position];

if (content && content.toElement) content = content.toElement; if (Object.isElement(content)) { insert(element, content); continue; }

content = Object.toHTML(content);

tagName = ((position == 'before' || position == 'after')       ? element.parentNode : element).tagName.toUpperCase;

childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts);

if (position == 'top' || position == 'after') childNodes.reverse; childNodes.each(insert.curry(element));

content.evalScripts.bind(content).defer; }

return element; },

wrap: function(element, wrapper, attributes) { element = $(element); if (Object.isElement(wrapper)) $(wrapper).writeAttribute(attributes || { }); else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes); else wrapper = new Element('div', wrapper); if (element.parentNode) element.parentNode.replaceChild(wrapper, element); wrapper.appendChild(element); return wrapper; },

inspect: function(element) { element = $(element); var result = '<' + element.tagName.toLowerCase; $H({'id': 'id', 'className': 'class'}).each(function(pair) {     var property = pair.first, attribute = pair.last;      var value = (element[property] || '').toString;      if (value) result += ' ' + attribute + '=' + value.inspect(true);    }); return result + '>'; },

recursivelyCollect: function(element, property) { element = $(element); var elements = []; while (element = element[property]) if (element.nodeType == 1) elements.push(Element.extend(element)); return elements; },

ancestors: function(element) { return $(element).recursivelyCollect('parentNode'); },

descendants: function(element) { return $(element).select("*"); },

firstDescendant: function(element) { element = $(element).firstChild; while (element && element.nodeType != 1) element = element.nextSibling; return $(element); },

immediateDescendants: function(element) { if (!(element = $(element).firstChild)) return []; while (element && element.nodeType != 1) element = element.nextSibling; if (element) return [element].concat($(element).nextSiblings); return []; },

previousSiblings: function(element) { return $(element).recursivelyCollect('previousSibling'); },

nextSiblings: function(element) { return $(element).recursivelyCollect('nextSibling'); },

siblings: function(element) { element = $(element); return element.previousSiblings.reverse.concat(element.nextSiblings); },

match: function(element, selector) { if (Object.isString(selector)) selector = new Selector(selector); return selector.match($(element)); },

up: function(element, expression, index) { element = $(element); if (arguments.length == 1) return $(element.parentNode); var ancestors = element.ancestors; return Object.isNumber(expression) ? ancestors[expression] : Selector.findElement(ancestors, expression, index); },

down: function(element, expression, index) { element = $(element); if (arguments.length == 1) return element.firstDescendant; return Object.isNumber(expression) ? element.descendants[expression] : Element.select(element, expression)[index || 0]; },

previous: function(element, expression, index) { element = $(element); if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element)); var previousSiblings = element.previousSiblings; return Object.isNumber(expression) ? previousSiblings[expression] : Selector.findElement(previousSiblings, expression, index); },

next: function(element, expression, index) { element = $(element); if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element)); var nextSiblings = element.nextSiblings; return Object.isNumber(expression) ? nextSiblings[expression] : Selector.findElement(nextSiblings, expression, index); },

select: function { var args = $A(arguments), element = $(args.shift); return Selector.findChildElements(element, args); },

adjacent: function { var args = $A(arguments), element = $(args.shift); return Selector.findChildElements(element.parentNode, args).without(element); },

identify: function(element) { element = $(element); var id = element.readAttribute('id'), self = arguments.callee; if (id) return id; do { id = 'anonymous_element_' + self.counter++ } while ($(id)); element.writeAttribute('id', id); return id; },

readAttribute: function(element, name) { element = $(element); if (Prototype.Browser.IE) { var t = Element._attributeTranslations.read; if (t.values[name]) return t.values[name](element, name); if (t.names[name]) name = t.names[name]; if (name.include(':')) { return (!element.attributes || !element.attributes[name]) ? null : element.attributes[name].value; }   }    return element.getAttribute(name); },

writeAttribute: function(element, name, value) { element = $(element); var attributes = { }, t = Element._attributeTranslations.write;

if (typeof name == 'object') attributes = name; else attributes[name] = Object.isUndefined(value) ? true : value;

for (var attr in attributes) { name = t.names[attr] || attr; value = attributes[attr]; if (t.values[attr]) name = t.values[attr](element, value); if (value === false || value === null) element.removeAttribute(name); else if (value === true) element.setAttribute(name, name); else element.setAttribute(name, value); }   return element; },

getHeight: function(element) { return $(element).getDimensions.height; },

getWidth: function(element) { return $(element).getDimensions.width; },

classNames: function(element) { return new Element.ClassNames(element); },

hasClassName: function(element, className) { if (!(element = $(element))) return; var elementClassName = element.className; return (elementClassName.length > 0 && (elementClassName == className || new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName))); },

addClassName: function(element, className) { if (!(element = $(element))) return; if (!element.hasClassName(className)) element.className += (element.className ? ' ' : '') + className; return element; },

removeClassName: function(element, className) { if (!(element = $(element))) return; element.className = element.className.replace(     new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip; return element; },

toggleClassName: function(element, className) { if (!(element = $(element))) return; return element[element.hasClassName(className) ? 'removeClassName' : 'addClassName'](className); },

// removes whitespace-only text node children cleanWhitespace: function(element) { element = $(element); var node = element.firstChild; while (node) { var nextNode = node.nextSibling; if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) element.removeChild(node); node = nextNode; }   return element; },

empty: function(element) { return $(element).innerHTML.blank; },

descendantOf: function(element, ancestor) { element = $(element), ancestor = $(ancestor);

if (element.compareDocumentPosition) return (element.compareDocumentPosition(ancestor) & 8) === 8;

if (ancestor.contains) return ancestor.contains(element) && ancestor !== element;

while (element = element.parentNode) if (element == ancestor) return true;

return false; },

scrollTo: function(element) { element = $(element); var pos = element.cumulativeOffset; window.scrollTo(pos[0], pos[1]); return element; },

getStyle: function(element, style) { element = $(element); style = style == 'float' ? 'cssFloat' : style.camelize; var value = element.style[style]; if (!value || value == 'auto') { var css = document.defaultView.getComputedStyle(element, null); value = css ? css[style] : null; }   if (style == 'opacity') return value ? parseFloat(value) : 1.0; return value == 'auto' ? null : value; },

getOpacity: function(element) { return $(element).getStyle('opacity'); },

setStyle: function(element, styles) { element = $(element); var elementStyle = element.style, match; if (Object.isString(styles)) { element.style.cssText += ';' + styles; return styles.include('opacity') ? element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element; }   for (var property in styles) if (property == 'opacity') element.setOpacity(styles[property]); else elementStyle[(property == 'float' || property == 'cssFloat') ? (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') : property] = styles[property];

return element; },

setOpacity: function(element, value) { element = $(element); element.style.opacity = (value == 1 || value === '') ? '' :     (value < 0.00001) ? 0 : value; return element; },

getDimensions: function(element) { element = $(element); var display = element.getStyle('display'); if (display != 'none' && display != null) // Safari bug return {width: element.offsetWidth, height: element.offsetHeight};

// All *Width and *Height properties give 0 on elements with display none, // so enable the element temporarily var els = element.style; var originalVisibility = els.visibility; var originalPosition = els.position; var originalDisplay = els.display; els.visibility = 'hidden'; els.position = 'absolute'; els.display = 'block'; var originalWidth = element.clientWidth; var originalHeight = element.clientHeight; els.display = originalDisplay; els.position = originalPosition; els.visibility = originalVisibility; return {width: originalWidth, height: originalHeight}; },

makePositioned: function(element) { element = $(element); var pos = Element.getStyle(element, 'position'); if (pos == 'static' || !pos) { element._madePositioned = true; element.style.position = 'relative'; // Opera returns the offset relative to the positioning context, when an     // element is position relative but top and left have not been defined if (Prototype.Browser.Opera) { element.style.top = 0; element.style.left = 0; }   }    return element; },

undoPositioned: function(element) { element = $(element); if (element._madePositioned) { element._madePositioned = undefined; element.style.position = element.style.top = element.style.left = element.style.bottom = element.style.right = ''; }   return element; },

makeClipping: function(element) { element = $(element); if (element._overflow) return element; element._overflow = Element.getStyle(element, 'overflow') || 'auto'; if (element._overflow !== 'hidden') element.style.overflow = 'hidden'; return element; },

undoClipping: function(element) { element = $(element); if (!element._overflow) return element; element.style.overflow = element._overflow == 'auto' ? '' : element._overflow; element._overflow = null; return element; },

cumulativeOffset: function(element) { var valueT = 0, valueL = 0; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0; element = element.offsetParent; } while (element); return Element._returnOffset(valueL, valueT); },

positionedOffset: function(element) { var valueT = 0, valueL = 0; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0; element = element.offsetParent; if (element) { if (element.tagName.toUpperCase == 'BODY') break; var p = Element.getStyle(element, 'position'); if (p !== 'static') break; }   } while (element); return Element._returnOffset(valueL, valueT); },

absolutize: function(element) { element = $(element); if (element.getStyle('position') == 'absolute') return element; // Position.prepare; // To be done manually by Scripty when it needs it.

var offsets = element.positionedOffset; var top    = offsets[1]; var left   = offsets[0]; var width  = element.clientWidth; var height = element.clientHeight;

element._originalLeft  = left - parseFloat(element.style.left  || 0); element._originalTop   = top  - parseFloat(element.style.top || 0); element._originalWidth = element.style.width; element._originalHeight = element.style.height;

element.style.position = 'absolute'; element.style.top   = top + 'px'; element.style.left  = left + 'px'; element.style.width = width + 'px'; element.style.height = height + 'px'; return element; },

relativize: function(element) { element = $(element); if (element.getStyle('position') == 'relative') return element; // Position.prepare; // To be done manually by Scripty when it needs it.

element.style.position = 'relative'; var top = parseFloat(element.style.top  || 0) - (element._originalTop || 0); var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

element.style.top   = top + 'px'; element.style.left  = left + 'px'; element.style.height = element._originalHeight; element.style.width = element._originalWidth; return element; },

cumulativeScrollOffset: function(element) { var valueT = 0, valueL = 0; do { valueT += element.scrollTop || 0; valueL += element.scrollLeft || 0; element = element.parentNode; } while (element); return Element._returnOffset(valueL, valueT); },

getOffsetParent: function(element) { if (element.offsetParent) return $(element.offsetParent); if (element == document.body) return $(element);

while ((element = element.parentNode) && element != document.body) if (Element.getStyle(element, 'position') != 'static') return $(element);

return $(document.body); },

viewportOffset: function(forElement) { var valueT = 0, valueL = 0;

var element = forElement; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0;

// Safari fix if (element.offsetParent == document.body &&       Element.getStyle(element, 'position') == 'absolute') break;

} while (element = element.offsetParent);

element = forElement; do { if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase == 'BODY'))) { valueT -= element.scrollTop || 0; valueL -= element.scrollLeft || 0; }   } while (element = element.parentNode);

return Element._returnOffset(valueL, valueT); },

clonePosition: function(element, source) { var options = Object.extend({     setLeft:    true,      setTop:     true,      setWidth:   true,      setHeight:  true,      offsetTop:  0,      offsetLeft: 0    }, arguments[2] || { });

// find page position of source source = $(source); var p = source.viewportOffset;

// find coordinate system to use element = $(element); var delta = [0, 0]; var parent = null; // delta [0,0] will do fine with position: fixed elements, // position:absolute needs offsetParent deltas if (Element.getStyle(element, 'position') == 'absolute') { parent = element.getOffsetParent; delta = parent.viewportOffset; }

// correct by body offsets (fixes Safari) if (parent == document.body) { delta[0] -= document.body.offsetLeft; delta[1] -= document.body.offsetTop; }

// set position if (options.setLeft)  element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px'; if (options.setTop)   element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px'; if (options.setWidth) element.style.width = source.offsetWidth + 'px'; if (options.setHeight) element.style.height = source.offsetHeight + 'px'; return element; } };

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, { getElementsBySelector: Element.Methods.select,  childElements: Element.Methods.immediateDescendants });

Element._attributeTranslations = { write: { names: { className: 'class', htmlFor:  'for' },   values: { } } };

if (Prototype.Browser.Opera) { Element.Methods.getStyle = Element.Methods.getStyle.wrap(   function(proceed, element, style) {      switch (style) {        case 'left': case 'top': case 'right': case 'bottom':          if (proceed(element, 'position') === 'static') return null;        case 'height': case 'width':          // returns '0px' for hidden elements; we want it to return null          if (!Element.visible(element)) return null;

// returns the border-box dimensions rather than the content-box // dimensions, so we subtract padding and borders from the value var dim = parseInt(proceed(element, style), 10);

if (dim !== element['offset' + style.capitalize]) return dim + 'px';

var properties; if (style === 'height') { properties = ['border-top-width', 'padding-top', 'padding-bottom', 'border-bottom-width']; }         else { properties = ['border-left-width', 'padding-left', 'padding-right', 'border-right-width']; }         return properties.inject(dim, function(memo, property) {            var val = proceed(element, property);            return val === null ? memo : memo - parseInt(val, 10);          }) + 'px'; default: return proceed(element, style); }   }  );

Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(   function(proceed, element, attribute) {      if (attribute === 'title') return element.title;      return proceed(element, attribute);    }  ); }

else if (Prototype.Browser.IE) { // IE doesn't report offsets correctly for static elements, so we change them // to "relative" to get the values, then change them back. Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(   function(proceed, element) {      element = $(element);      // IE throws an error if element is not in document      try { element.offsetParent }      catch(e) { return $(document.body) }      var position = element.getStyle('position');      if (position !== 'static') return proceed(element);      element.setStyle({ position: 'relative' });      var value = proceed(element);      element.setStyle({ position: position });      return value;    }  );

$w('positionedOffset viewportOffset').each(function(method) {   Element.Methods[method] = Element.Methods[method].wrap( function(proceed, element) { element = $(element); try { element.offsetParent } catch(e) { return Element._returnOffset(0,0) } var position = element.getStyle('position'); if (position !== 'static') return proceed(element); // Trigger hasLayout on the offset parent so that IE6 reports // accurate offsetTop and offsetLeft values for position: fixed. var offsetParent = element.getOffsetParent; if (offsetParent && offsetParent.getStyle('position') === 'fixed') offsetParent.setStyle({ zoom: 1 }); element.setStyle({ position: 'relative' }); var value = proceed(element); element.setStyle({ position: position }); return value; }   );  });

Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(   function(proceed, element) {      try { element.offsetParent }      catch(e) { return Element._returnOffset(0,0) }      return proceed(element);    }  );

Element.Methods.getStyle = function(element, style) { element = $(element); style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize; var value = element.style[style]; if (!value && element.currentStyle) value = element.currentStyle[style];

if (style == 'opacity') { if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/)) if (value[1]) return parseFloat(value[1]) / 100; return 1.0; }

if (value == 'auto') { if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none')) return element['offset' + style.capitalize] + 'px'; return null; }   return value; };

Element.Methods.setOpacity = function(element, value) { function stripAlpha(filter){ return filter.replace(/alpha\([^\)]*\)/gi,'');   }    element = $(element);    var currentStyle = element.currentStyle;    if ((currentStyle && !currentStyle.hasLayout) || (!currentStyle && element.style.zoom == 'normal'))       element.style.zoom = 1;

var filter = element.getStyle('filter'), style = element.style; if (value == 1 || value === '') { (filter = stripAlpha(filter)) ? style.filter = filter : style.removeAttribute('filter'); return element; } else if (value < 0.00001) value = 0; style.filter = stripAlpha(filter) + 'alpha(opacity=' + (value * 100) + ')'; return element; };

Element._attributeTranslations = { read: { names: { 'class': 'className', 'for':  'htmlFor' },     values: { _getAttr: function(element, attribute) { return element.getAttribute(attribute, 2); },       _getAttrNode: function(element, attribute) { var node = element.getAttributeNode(attribute); return node ? node.value : ""; },       _getEv: function(element, attribute) { attribute = element.getAttribute(attribute); return attribute ? attribute.toString.slice(23, -2) : null; },       _flag: function(element, attribute) { return $(element).hasAttribute(attribute) ? attribute : null; },       style: function(element) { return element.style.cssText.toLowerCase; },       title: function(element) { return element.title; }     }    }  };

Element._attributeTranslations.write = { names: Object.extend({     cellpadding: 'cellPadding',      cellspacing: 'cellSpacing'    }, Element._attributeTranslations.read.names), values: { checked: function(element, value) { element.checked = !!value; },

style: function(element, value) { element.style.cssText = value ? value : ''; }   }  };

Element._attributeTranslations.has = {};

$w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +     'encType maxLength readOnly longDesc frameBorder').each(function(attr) {    Element._attributeTranslations.write.names[attr.toLowerCase] = attr;    Element._attributeTranslations.has[attr.toLowerCase] = attr;  });

(function(v) {   Object.extend(v, { href:       v._getAttr, src:        v._getAttr, type:       v._getAttr, action:     v._getAttrNode, disabled:   v._flag, checked:    v._flag, readonly:   v._flag, multiple:   v._flag, onload:     v._getEv, onunload:   v._getEv, onclick:    v._getEv, ondblclick: v._getEv, onmousedown: v._getEv, onmouseup:  v._getEv, onmouseover: v._getEv, onmousemove: v._getEv, onmouseout: v._getEv, onfocus:    v._getEv, onblur:     v._getEv, onkeypress: v._getEv, onkeydown:  v._getEv, onkeyup:    v._getEv, onsubmit:   v._getEv, onreset:    v._getEv, onselect:   v._getEv, onchange:   v._getEv }); })(Element._attributeTranslations.read.values); }

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) { Element.Methods.setOpacity = function(element, value) { element = $(element); element.style.opacity = (value == 1) ? 0.999999 :     (value === '') ? '' : (value < 0.00001) ? 0 : value; return element; }; }

else if (Prototype.Browser.WebKit) { Element.Methods.setOpacity = function(element, value) { element = $(element); element.style.opacity = (value == 1 || value === '') ? '' :     (value < 0.00001) ? 0 : value;

if (value == 1) if(element.tagName.toUpperCase == 'IMG' && element.width) { element.width++; element.width--; } else try { var n = document.createTextNode(' '); element.appendChild(n); element.removeChild(n); } catch (e) { }

return element; };

// Safari returns margins on body which is incorrect if the child is absolutely // positioned. For performance reasons, redefine Element#cumulativeOffset for // KHTML/WebKit only. Element.Methods.cumulativeOffset = function(element) { var valueT = 0, valueL = 0; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0; if (element.offsetParent == document.body) if (Element.getStyle(element, 'position') == 'absolute') break;

element = element.offsetParent; } while (element);

return Element._returnOffset(valueL, valueT); }; }

if (Prototype.Browser.IE || Prototype.Browser.Opera) { // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements Element.Methods.update = function(element, content) { element = $(element);

if (content && content.toElement) content = content.toElement; if (Object.isElement(content)) return element.update.insert(content);

content = Object.toHTML(content); var tagName = element.tagName.toUpperCase;

if (tagName in Element._insertionTranslations.tags) { $A(element.childNodes).each(function(node) { element.removeChild(node) }); Element._getContentFromAnonymousElement(tagName, content.stripScripts) .each(function(node) { element.appendChild(node) }); }   else element.innerHTML = content.stripScripts;

content.evalScripts.bind(content).defer; return element; }; }

if ('outerHTML' in document.createElement('div')) { Element.Methods.replace = function(element, content) { element = $(element);

if (content && content.toElement) content = content.toElement; if (Object.isElement(content)) { element.parentNode.replaceChild(content, element); return element; }

content = Object.toHTML(content); var parent = element.parentNode, tagName = parent.tagName.toUpperCase;

if (Element._insertionTranslations.tags[tagName]) { var nextSibling = element.next; var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts); parent.removeChild(element); if (nextSibling) fragments.each(function(node) { parent.insertBefore(node, nextSibling) }); else fragments.each(function(node) { parent.appendChild(node) }); }   else element.outerHTML = content.stripScripts;

content.evalScripts.bind(content).defer; return element; }; }

Element._returnOffset = function(l, t) { var result = [l, t]; result.left = l; result.top = t;  return result; };

Element._getContentFromAnonymousElement = function(tagName, html) { var div = new Element('div'), t = Element._insertionTranslations.tags[tagName]; if (t) { div.innerHTML = t[0] + html + t[1]; t[2].times(function { div = div.firstChild }); } else div.innerHTML = html; return $A(div.childNodes); };

Element._insertionTranslations = { before: function(element, node) { element.parentNode.insertBefore(node, element); }, top: function(element, node) { element.insertBefore(node, element.firstChild); }, bottom: function(element, node) { element.appendChild(node); }, after: function(element, node) { element.parentNode.insertBefore(node, element.nextSibling); }, tags: { TABLE: [' ',                   1], TBODY: [' ',           2], TR:    [' ',      3], TD:    [' ', 4], SELECT: [' ',              ' ',                  1] } };

(function { Object.extend(this.tags, { THEAD: this.tags.TBODY, TFOOT: this.tags.TBODY, TH:   this.tags.TD  }); }).call(Element._insertionTranslations);

Element.Methods.Simulated = { hasAttribute: function(element, attribute) { attribute = Element._attributeTranslations.has[attribute] || attribute; var node = $(element).getAttributeNode(attribute); return !!(node && node.specified); } };

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&   document.createElement('div')['__proto__']) { window.HTMLElement = { }; window.HTMLElement.prototype = document.createElement('div')['__proto__']; Prototype.BrowserFeatures.ElementExtensions = true; }

Element.extend = (function { if (Prototype.BrowserFeatures.SpecificElementExtensions)    return Prototype.K;

var Methods = { }, ByTag = Element.Methods.ByTag;

var extend = Object.extend(function(element) {   if (!element || element._extendedByPrototype || element.nodeType != 1 || element == window) return element;

var methods = Object.clone(Methods), tagName = element.tagName.toUpperCase, property, value;

// extend methods for specific tags if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

for (property in methods) { value = methods[property]; if (Object.isFunction(value) && !(property in element)) element[property] = value.methodize; }

element._extendedByPrototype = Prototype.emptyFunction; return element;

}, {   refresh: function { // extend methods for all tags (Safari doesn't need this) if (!Prototype.BrowserFeatures.ElementExtensions) { Object.extend(Methods, Element.Methods); Object.extend(Methods, Element.Methods.Simulated); }   }  });

extend.refresh; return extend; });

Element.hasAttribute = function(element, attribute) { if (element.hasAttribute) return element.hasAttribute(attribute); return Element.Methods.Simulated.hasAttribute(element, attribute); };

Element.addMethods = function(methods) { var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

if (!methods) { Object.extend(Form, Form.Methods); Object.extend(Form.Element, Form.Element.Methods); Object.extend(Element.Methods.ByTag, {     "FORM":     Object.clone(Form.Methods),      "INPUT":    Object.clone(Form.Element.Methods),      "SELECT":   Object.clone(Form.Element.Methods),      "TEXTAREA": Object.clone(Form.Element.Methods)    }); }

if (arguments.length == 2) { var tagName = methods; methods = arguments[1]; }

if (!tagName) Object.extend(Element.Methods, methods || { }); else { if (Object.isArray(tagName)) tagName.each(extend); else extend(tagName); }

function extend(tagName) { tagName = tagName.toUpperCase; if (!Element.Methods.ByTag[tagName]) Element.Methods.ByTag[tagName] = { }; Object.extend(Element.Methods.ByTag[tagName], methods); }

function copy(methods, destination, onlyIfAbsent) { onlyIfAbsent = onlyIfAbsent || false; for (var property in methods) { var value = methods[property]; if (!Object.isFunction(value)) continue; if (!onlyIfAbsent || !(property in destination)) destination[property] = value.methodize; } }

function findDOMClass(tagName) { var klass; var trans = { "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph", "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList", "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading", "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote", "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION": "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD": "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR": "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET": "FrameSet", "IFRAME": "IFrame" };   if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element'; if (window[klass]) return window[klass]; klass = 'HTML' + tagName + 'Element'; if (window[klass]) return window[klass]; klass = 'HTML' + tagName.capitalize + 'Element'; if (window[klass]) return window[klass];

window[klass] = { }; window[klass].prototype = document.createElement(tagName)['__proto__']; return window[klass]; }

if (F.ElementExtensions) { copy(Element.Methods, HTMLElement.prototype); copy(Element.Methods.Simulated, HTMLElement.prototype, true); }

if (F.SpecificElementExtensions) { for (var tag in Element.Methods.ByTag) { var klass = findDOMClass(tag); if (Object.isUndefined(klass)) continue; copy(T[tag], klass.prototype); } }

Object.extend(Element, Element.Methods); delete Element.ByTag;

if (Element.extend.refresh) Element.extend.refresh; Element.cache = { }; };

document.viewport = { getDimensions: function { var dimensions = { }, B = Prototype.Browser; $w('width height').each(function(d) {     var D = d.capitalize;      if (B.WebKit && !document.evaluate) {        // Safari <3.0 needs self.innerWidth/Height        dimensions[d] = self['inner' + D];      } else if (B.Opera && parseFloat(window.opera.version) < 9.5) {        // Opera <9.5 needs document.body.clientWidth/Height        dimensions[d] = document.body['client' + D]      } else {        dimensions[d] = document.documentElement['client' + D];      }    }); return dimensions; },

getWidth: function { return this.getDimensions.width; },

getHeight: function { return this.getDimensions.height; },

getScrollOffsets: function { return Element._returnOffset(     window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop); } }; /* Portions of the Selector class are derived from Jack Slocum's DomQuery, * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style * license. Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({ initialize: function(expression) {    this.expression = expression.strip;

if (this.shouldUseSelectorsAPI) { this.mode = 'selectorsAPI'; } else if (this.shouldUseXPath) { this.mode = 'xpath'; this.compileXPathMatcher; } else { this.mode = "normal"; this.compileMatcher; }

},

shouldUseXPath: function { if (!Prototype.BrowserFeatures.XPath) return false;

var e = this.expression;

// Safari 3 chokes on :*-of-type and :empty if (Prototype.Browser.WebKit &&    (e.include("-of-type") || e.include(":empty"))) return false;

// XPath can't do namespaced attributes, nor can it read // the "checked" property from DOM nodes if ((/(\[[\w-]*?:|:checked)/).test(e))     return false;

return true; },

shouldUseSelectorsAPI: function { if (!Prototype.BrowserFeatures.SelectorsAPI) return false;

if (!Selector._div) Selector._div = new Element('div');

// Make sure the browser treats the selector as valid. Test on an   // isolated element to minimize cost of this check. try { Selector._div.querySelector(this.expression); } catch(e) { return false; }

return true; },

compileMatcher: function { var e = this.expression, ps = Selector.patterns, h = Selector.handlers, c = Selector.criteria, le, p, m;

if (Selector._cache[e]) { this.matcher = Selector._cache[e]; return; }

this.matcher = ["this.matcher = function(root) {", "var r = root, h = Selector.handlers, c = false, n;"];

while (e && le != e && (/\S/).test(e)) { le = e;     for (var i in ps) { p = ps[i]; if (m = e.match(p)) { this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :           new Template(c[i]).evaluate(m)); e = e.replace(m[0], ''); break; }     }    }

this.matcher.push("return h.unique(n);\n}"); eval(this.matcher.join('\n')); Selector._cache[this.expression] = this.matcher; },

compileXPathMatcher: function { var e = this.expression, ps = Selector.patterns, x = Selector.xpath, le, m;

if (Selector._cache[e]) { this.xpath = Selector._cache[e]; return; }

this.matcher = ['.//*']; while (e && le != e && (/\S/).test(e)) { le = e;     for (var i in ps) { if (m = e.match(ps[i])) { this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :           new Template(x[i]).evaluate(m)); e = e.replace(m[0], ''); break; }     }    }

this.xpath = this.matcher.join(''); Selector._cache[this.expression] = this.xpath; },

findElements: function(root) { root = root || document; var e = this.expression, results;

switch (this.mode) { case 'selectorsAPI': // querySelectorAll queries document-wide, then filters to descendants // of the context element. That's not what we want. // Add an explicit context to the selector if necessary. if (root !== document) { var oldId = root.id, id = $(root).identify; e = "#" + id + " " + e;       }

results = $A(root.querySelectorAll(e)).map(Element.extend); root.id = oldId;

return results; case 'xpath': return document._getElementsByXPath(this.xpath, root); default: return this.matcher(root); } },

match: function(element) { this.tokens = [];

var e = this.expression, ps = Selector.patterns, as = Selector.assertions; var le, p, m;

while (e && le !== e && (/\S/).test(e)) { le = e;     for (var i in ps) { p = ps[i]; if (m = e.match(p)) { // use the Selector.assertions methods unless the selector // is too complex. if (as[i]) { this.tokens.push([i, Object.clone(m)]); e = e.replace(m[0], ''); } else { // reluctantly do a document-wide search // and look for a match in the array return this.findElements(document).include(element); }       }      }    }

var match = true, name, matches; for (var i = 0, token; token = this.tokens[i]; i++) { name = token[0], matches = token[1]; if (!Selector.assertions[name](element, matches)) { match = false; break; }   }

return match; },

toString: function { return this.expression; },

inspect: function { return "#"; } });

Object.extend(Selector, { _cache: { },

xpath: { descendant:  "//*", child:       "/*", adjacent:    "/following-sibling::*[1]", laterSibling: '/following-sibling::*', tagName:     function(m) { if (m[1] == '*') return ''; return "[local-name='" + m[1].toLowerCase + "' or local-name='" + m[1].toUpperCase + "']"; },   className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]", id:          "[@id='#{1}']", attrPresence: function(m) { m[1] = m[1].toLowerCase; return new Template("[@#{1}]").evaluate(m); },   attr: function(m) { m[1] = m[1].toLowerCase; m[3] = m[5] || m[6]; return new Template(Selector.xpath.operators[m[2]]).evaluate(m); },   pseudo: function(m) { var h = Selector.xpath.pseudos[m[1]]; if (!h) return ''; if (Object.isFunction(h)) return h(m); return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m); },   operators: { '=': "[@#{1}='#{3}']",      '!=': "[@#{1}!='#{3}']",      '^=': "[starts-with(@#{1}, '#{3}')]", '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']", '*=': "[contains(@#{1}, '#{3}')]", '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]", '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]" },   pseudos: { 'first-child': '[not(preceding-sibling::*)]', 'last-child': '[not(following-sibling::*)]', 'only-child': '[not(preceding-sibling::* or following-sibling::*)]', 'empty':      "[count(*) = 0 and (count(text) = 0)]", 'checked':    "[@checked]", 'disabled':   "[(@disabled) and (@type!='hidden')]", 'enabled':    "[not(@disabled) and (@type!='hidden')]", 'not': function(m) { var e = m[6], p = Selector.patterns, x = Selector.xpath, le, v;

var exclusion = []; while (e && le != e && (/\S/).test(e)) { le = e;         for (var i in p) { if (m = e.match(p[i])) { v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m); exclusion.push("(" + v.substring(1, v.length - 1) + ")"); e = e.replace(m[0], ''); break; }         }        }        return "[not(" + exclusion.join(" and ") + ")]"; },     'nth-child':      function(m) { return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m); },     'nth-last-child': function(m) { return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m); },     'nth-of-type':    function(m) { return Selector.xpath.pseudos.nth("position ", m); },     'nth-last-of-type': function(m) { return Selector.xpath.pseudos.nth("(last + 1 - position) ", m); },     'first-of-type':  function(m) { m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m); },     'last-of-type':   function(m) { m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m); },     'only-of-type':   function(m) { var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m); },     nth: function(fragment, m) { var mm, formula = m[6], predicate; if (formula == 'even') formula = '2n+0'; if (formula == 'odd') formula = '2n+1'; if (mm = formula.match(/^(\d+)$/)) // digit only return '[' + fragment + "= " + mm[1] + ']'; if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b if (mm[1] == "-") mm[1] = -1; var a = mm[1] ? Number(mm[1]) : 1; var b = mm[2] ? Number(mm[2]) : 0; predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " + "((#{fragment} - #{b}) div #{a} >= 0)]"; return new Template(predicate).evaluate({           fragment: fragment, a: a, b: b }); }     }    }  },

criteria: { tagName:     'n = h.tagName(n, r, "#{1}", c);      c = false;', className:   'n = h.className(n, r, "#{1}", c);    c = false;', id:          'n = h.id(n, r, "#{1}", c);           c = false;', attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;', attr: function(m) { m[3] = (m[5] || m[6]); return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m); },   pseudo: function(m) { if (m[6]) m[6] = m[6].replace(/"/g, '\\"'); return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m); },   descendant:   'c = "descendant";', child:       'c = "child";', adjacent:    'c = "adjacent";', laterSibling: 'c = "laterSibling";' },

patterns: { // combinators must be listed first // (and descendant needs to be last combinator) laterSibling: /^\s*~\s*/, child:       /^\s*>\s*/, adjacent:    /^\s*\+\s*/, descendant:  /^\s/,

// selectors follow tagName:     /^\s*(\*|[\w\-]+)(\b|$)?/, id:          /^#([\w\-\*]+)(\b|$)/, className:   /^\.([\w\-\*]+)(\b|$)/, pseudo: /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/, attrPresence: /^\[((?:[\w]+:)?[\w]+)\]/, attr:        /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/ },

// for Selector.match and Element#match assertions: { tagName: function(element, matches) { return matches[1].toUpperCase == element.tagName.toUpperCase; },

className: function(element, matches) { return Element.hasClassName(element, matches[1]); },

id: function(element, matches) { return element.id === matches[1]; },

attrPresence: function(element, matches) { return Element.hasAttribute(element, matches[1]); },

attr: function(element, matches) { var nodeValue = Element.readAttribute(element, matches[1]); return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]); } },

handlers: { // UTILITY FUNCTIONS // joins two collections concat: function(a, b) { for (var i = 0, node; node = b[i]; i++) a.push(node); return a;   },

// marks an array of nodes for counting mark: function(nodes) { var _true = Prototype.emptyFunction; for (var i = 0, node; node = nodes[i]; i++) node._countedByPrototype = _true; return nodes; },

unmark: function(nodes) { for (var i = 0, node; node = nodes[i]; i++) node._countedByPrototype = undefined; return nodes; },

// mark each child node with its position (for nth calls) // "ofType" flag indicates whether we're indexing for nth-of-type // rather than nth-child index: function(parentNode, reverse, ofType) { parentNode._countedByPrototype = Prototype.emptyFunction; if (reverse) { for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) { var node = nodes[i]; if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++; }     } else { for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++) if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++; }   },

// filters out duplicates and extends all nodes unique: function(nodes) { if (nodes.length == 0) return nodes; var results = [], n;     for (var i = 0, l = nodes.length; i < l; i++) if (!(n = nodes[i])._countedByPrototype) { n._countedByPrototype = Prototype.emptyFunction; results.push(Element.extend(n)); }     return Selector.handlers.unmark(results); },

// COMBINATOR FUNCTIONS descendant: function(nodes) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) h.concat(results, node.getElementsByTagName('*')); return results; },

child: function(nodes) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) { for (var j = 0, child; child = node.childNodes[j]; j++) if (child.nodeType == 1 && child.tagName != '!') results.push(child); }     return results; },

adjacent: function(nodes) { for (var i = 0, results = [], node; node = nodes[i]; i++) { var next = this.nextElementSibling(node); if (next) results.push(next); }     return results; },

laterSibling: function(nodes) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) h.concat(results, Element.nextSiblings(node)); return results; },

nextElementSibling: function(node) { while (node = node.nextSibling) if (node.nodeType == 1) return node; return null; },

previousElementSibling: function(node) { while (node = node.previousSibling) if (node.nodeType == 1) return node; return null; },

// TOKEN FUNCTIONS tagName: function(nodes, root, tagName, combinator) { var uTagName = tagName.toUpperCase; var results = [], h = Selector.handlers; if (nodes) { if (combinator) { // fastlane for ordinary descendant combinators if (combinator == "descendant") { for (var i = 0, node; node = nodes[i]; i++) h.concat(results, node.getElementsByTagName(tagName)); return results; } else nodes = this[combinator](nodes); if (tagName == "*") return nodes; }       for (var i = 0, node; node = nodes[i]; i++) if (node.tagName.toUpperCase === uTagName) results.push(node); return results; } else return root.getElementsByTagName(tagName); },

id: function(nodes, root, id, combinator) { var targetNode = $(id), h = Selector.handlers; if (!targetNode) return []; if (!nodes && root == document) return [targetNode]; if (nodes) { if (combinator) { if (combinator == 'child') { for (var i = 0, node; node = nodes[i]; i++) if (targetNode.parentNode == node) return [targetNode]; } else if (combinator == 'descendant') { for (var i = 0, node; node = nodes[i]; i++) if (Element.descendantOf(targetNode, node)) return [targetNode]; } else if (combinator == 'adjacent') { for (var i = 0, node; node = nodes[i]; i++) if (Selector.handlers.previousElementSibling(targetNode) == node) return [targetNode]; } else nodes = h[combinator](nodes); }       for (var i = 0, node; node = nodes[i]; i++) if (node == targetNode) return [targetNode]; return []; }     return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : []; },

className: function(nodes, root, className, combinator) { if (nodes && combinator) nodes = this[combinator](nodes); return Selector.handlers.byClassName(nodes, root, className); },

byClassName: function(nodes, root, className) { if (!nodes) nodes = Selector.handlers.descendant([root]); var needle = ' ' + className + ' '; for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) { nodeClassName = node.className; if (nodeClassName.length == 0) continue; if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle)) results.push(node); }     return results; },

attrPresence: function(nodes, root, attr, combinator) { if (!nodes) nodes = root.getElementsByTagName("*"); if (nodes && combinator) nodes = this[combinator](nodes); var results = []; for (var i = 0, node; node = nodes[i]; i++) if (Element.hasAttribute(node, attr)) results.push(node); return results; },

attr: function(nodes, root, attr, value, operator, combinator) { if (!nodes) nodes = root.getElementsByTagName("*"); if (nodes && combinator) nodes = this[combinator](nodes); var handler = Selector.operators[operator], results = []; for (var i = 0, node; node = nodes[i]; i++) { var nodeValue = Element.readAttribute(node, attr); if (nodeValue === null) continue; if (handler(nodeValue, value)) results.push(node); }     return results; },

pseudo: function(nodes, name, value, root, combinator) { if (nodes && combinator) nodes = this[combinator](nodes); if (!nodes) nodes = root.getElementsByTagName("*"); return Selector.pseudos[name](nodes, value, root); } },

pseudos: { 'first-child': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) { if (Selector.handlers.previousElementSibling(node)) continue; results.push(node); }     return results; },   'last-child': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) { if (Selector.handlers.nextElementSibling(node)) continue; results.push(node); }     return results; },   'only-child': function(nodes, value, root) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) if (!h.previousElementSibling(node) && !h.nextElementSibling(node)) results.push(node); return results; },   'nth-child':        function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root); },   'nth-last-child':   function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root, true); },   'nth-of-type':      function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root, false, true); },   'nth-last-of-type': function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root, true, true); },   'first-of-type':    function(nodes, formula, root) { return Selector.pseudos.nth(nodes, "1", root, false, true); },   'last-of-type':     function(nodes, formula, root) { return Selector.pseudos.nth(nodes, "1", root, true, true); },   'only-of-type':     function(nodes, formula, root) { var p = Selector.pseudos; return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root); },

// handles the an+b logic getIndices: function(a, b, total) { if (a == 0) return b > 0 ? [b] : []; return $R(1, total).inject([], function(memo, i) {       if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);        return memo;      }); },

// handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type nth: function(nodes, formula, root, reverse, ofType) { if (nodes.length == 0) return []; if (formula == 'even') formula = '2n+0'; if (formula == 'odd') formula = '2n+1'; var h = Selector.handlers, results = [], indexed = [], m;     h.mark(nodes); for (var i = 0, node; node = nodes[i]; i++) { if (!node.parentNode._countedByPrototype) { h.index(node.parentNode, reverse, ofType); indexed.push(node.parentNode); }     }      if (formula.match(/^\d+$/)) { // just a number formula = Number(formula); for (var i = 0, node; node = nodes[i]; i++) if (node.nodeIndex == formula) results.push(node); } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b if (m[1] == "-") m[1] = -1; var a = m[1] ? Number(m[1]) : 1; var b = m[2] ? Number(m[2]) : 0; var indices = Selector.pseudos.getIndices(a, b, nodes.length); for (var i = 0, node, l = indices.length; node = nodes[i]; i++) { for (var j = 0; j < l; j++) if (node.nodeIndex == indices[j]) results.push(node); }     }      h.unmark(nodes); h.unmark(indexed); return results; },

'empty': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) { // IE treats comments as element nodes if (node.tagName == '!' || node.firstChild) continue; results.push(node); }     return results; },

'not': function(nodes, selector, root) { var h = Selector.handlers, selectorType, m;     var exclusions = new Selector(selector).findElements(root); h.mark(exclusions); for (var i = 0, results = [], node; node = nodes[i]; i++) if (!node._countedByPrototype) results.push(node); h.unmark(exclusions); return results; },

'enabled': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) if (!node.disabled && (!node.type || node.type !== 'hidden')) results.push(node); return results; },

'disabled': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) if (node.disabled) results.push(node); return results; },

'checked': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) if (node.checked) results.push(node); return results; } },

operators: { '=': function(nv, v) { return nv == v; }, '!=': function(nv, v) { return nv != v; }, '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); }, '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); }, '*=': function(nv, v) { return nv == v || nv && nv.include(v); }, '$=': function(nv, v) { return nv.endsWith(v); }, '*=': function(nv, v) { return nv.include(v); }, '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); }, '|=': function(nv, v) { return ('-' + (nv || "").toUpperCase +    '-').include('-' + (v || "").toUpperCase + '-'); } },

split: function(expression) { var expressions = []; expression.scan(/(([\w#:.~>+\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {     expressions.push(m[1].strip);    }); return expressions; },

matchElements: function(elements, expression) { var matches = $$(expression), h = Selector.handlers; h.mark(matches); for (var i = 0, results = [], element; element = elements[i]; i++) if (element._countedByPrototype) results.push(element); h.unmark(matches); return results; },

findElement: function(elements, expression, index) { if (Object.isNumber(expression)) { index = expression; expression = false; }   return Selector.matchElements(elements, expression || '*')[index || 0]; },

findChildElements: function(element, expressions) { expressions = Selector.split(expressions.join(',')); var results = [], h = Selector.handlers; for (var i = 0, l = expressions.length, selector; i < l; i++) { selector = new Selector(expressions[i].strip); h.concat(results, selector.findElements(element)); }   return (l > 1) ? h.unique(results) : results; } });

if (Prototype.Browser.IE) { Object.extend(Selector.handlers, {   // IE returns comment nodes on getElementsByTagName("*").    // Filter them out.    concat: function(a, b) {      for (var i = 0, node; node = b[i]; i++)        if (node.tagName !== "!") a.push(node);      return a;    },

// IE improperly serializes _countedByPrototype in (inner|outer)HTML. unmark: function(nodes) { for (var i = 0, node; node = nodes[i]; i++) node.removeAttribute('_countedByPrototype'); return nodes; } }); }

function $$ { return Selector.findChildElements(document, $A(arguments)); } var Form = { reset: function(form) { $(form).reset; return form; },

serializeElements: function(elements, options) { if (typeof options != 'object') options = { hash: !!options }; else if (Object.isUndefined(options.hash)) options.hash = true; var key, value, submitted = false, submit = options.submit;

var data = elements.inject({ }, function(result, element) {     if (!element.disabled && element.name) {        key = element.name; value = $(element).getValue;        if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted && submit !== false && (!submit || key == submit) && (submitted = true)))) {         if (key in result) {            // a key is already present; construct an array of values            if (!Object.isArray(result[key])) result[key] = [result[key]];            result[key].push(value);          }          else result[key] = value;        }      }      return result;    });

return options.hash ? data : Object.toQueryString(data); } };

Form.Methods = { serialize: function(form, options) { return Form.serializeElements(Form.getElements(form), options); },

getElements: function(form) { return $A($(form).getElementsByTagName('*')).inject([],     function(elements, child) {        if (Form.Element.Serializers[child.tagName.toLowerCase])          elements.push(Element.extend(child));        return elements;      }    ); },

getInputs: function(form, typeName, name) { form = $(form); var inputs = form.getElementsByTagName('input');

if (!typeName && !name) return $A(inputs).map(Element.extend);

for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) { var input = inputs[i]; if ((typeName && input.type != typeName) || (name && input.name != name)) continue; matchingInputs.push(Element.extend(input)); }

return matchingInputs; },

disable: function(form) { form = $(form); Form.getElements(form).invoke('disable'); return form; },

enable: function(form) { form = $(form); Form.getElements(form).invoke('enable'); return form; },

findFirstElement: function(form) { var elements = $(form).getElements.findAll(function(element) {     return 'hidden' != element.type && !element.disabled;    }); var firstByIndex = elements.findAll(function(element) {     return element.hasAttribute('tabIndex') && element.tabIndex >= 0;    }).sortBy(function(element) { return element.tabIndex }).first;

return firstByIndex ? firstByIndex : elements.find(function(element) {     return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase);    }); },

focusFirstElement: function(form) { form = $(form); form.findFirstElement.activate; return form; },

request: function(form, options) { form = $(form), options = Object.clone(options || { });

var params = options.parameters, action = form.readAttribute('action') || ''; if (action.blank) action = window.location.href; options.parameters = form.serialize(true);

if (params) { if (Object.isString(params)) params = params.toQueryParams; Object.extend(options.parameters, params); }

if (form.hasAttribute('method') && !options.method) options.method = form.method;

return new Ajax.Request(action, options); } };

/*--*/

Form.Element = { focus: function(element) { $(element).focus; return element; },

select: function(element) { $(element).select; return element; } };

Form.Element.Methods = { serialize: function(element) { element = $(element); if (!element.disabled && element.name) { var value = element.getValue; if (value != undefined) { var pair = { }; pair[element.name] = value; return Object.toQueryString(pair); }   }    return ''; },

getValue: function(element) { element = $(element); var method = element.tagName.toLowerCase; return Form.Element.Serializers[method](element); },

setValue: function(element, value) { element = $(element); var method = element.tagName.toLowerCase; Form.Element.Serializers[method](element, value); return element; },

clear: function(element) { $(element).value = ''; return element; },

present: function(element) { return $(element).value != ''; },

activate: function(element) { element = $(element); try { element.focus; if (element.select && (element.tagName.toLowerCase != 'input' || !['button', 'reset', 'submit'].include(element.type))) element.select; } catch (e) { } return element; },

disable: function(element) { element = $(element); element.disabled = true; return element; },

enable: function(element) { element = $(element); element.disabled = false; return element; } };

/*--*/

var Field = Form.Element; var $F = Form.Element.Methods.getValue;

/*--*/

Form.Element.Serializers = { input: function(element, value) { switch (element.type.toLowerCase) { case 'checkbox': case 'radio': return Form.Element.Serializers.inputSelector(element, value); default: return Form.Element.Serializers.textarea(element, value); } },

inputSelector: function(element, value) { if (Object.isUndefined(value)) return element.checked ? element.value : null; else element.checked = !!value; },

textarea: function(element, value) { if (Object.isUndefined(value)) return element.value; else element.value = value; },

select: function(element, value) { if (Object.isUndefined(value)) return this[element.type == 'select-one' ? 'selectOne' : 'selectMany'](element); else { var opt, currentValue, single = !Object.isArray(value); for (var i = 0, length = element.length; i < length; i++) { opt = element.options[i]; currentValue = this.optionValue(opt); if (single) { if (currentValue == value) { opt.selected = true; return; }       }        else opt.selected = value.include(currentValue); }   }  },

selectOne: function(element) { var index = element.selectedIndex; return index >= 0 ? this.optionValue(element.options[index]) : null; },

selectMany: function(element) { var values, length = element.length; if (!length) return null;

for (var i = 0, values = []; i < length; i++) { var opt = element.options[i]; if (opt.selected) values.push(this.optionValue(opt)); }   return values; },

optionValue: function(opt) { // extend element because hasAttribute may not be native return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text; } };

/*--*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, { initialize: function($super, element, frequency, callback) {    $super(callback, frequency);    this.element   = $(element);    this.lastValue = this.getValue;  },

execute: function { var value = this.getValue; if (Object.isString(this.lastValue) && Object.isString(value) ?       this.lastValue != value : String(this.lastValue) != String(value)) { this.callback(this.element, value); this.lastValue = value; } } });

Form.Element.Observer = Class.create(Abstract.TimedObserver, { getValue: function {    return Form.Element.getValue(this.element);  } });

Form.Observer = Class.create(Abstract.TimedObserver, { getValue: function {    return Form.serialize(this.element);  } });

/*--*/

Abstract.EventObserver = Class.create({ initialize: function(element, callback) {    this.element  = $(element);    this.callback = callback;

this.lastValue = this.getValue; if (this.element.tagName.toLowerCase == 'form') this.registerFormCallbacks; else this.registerCallback(this.element); },

onElementEvent: function { var value = this.getValue; if (this.lastValue != value) { this.callback(this.element, value); this.lastValue = value; } },

registerFormCallbacks: function { Form.getElements(this.element).each(this.registerCallback, this); },

registerCallback: function(element) { if (element.type) { switch (element.type.toLowerCase) { case 'checkbox': case 'radio': Event.observe(element, 'click', this.onElementEvent.bind(this)); break; default: Event.observe(element, 'change', this.onElementEvent.bind(this)); break; }   }  } });

Form.Element.EventObserver = Class.create(Abstract.EventObserver, { getValue: function {    return Form.Element.getValue(this.element);  } });

Form.EventObserver = Class.create(Abstract.EventObserver, { getValue: function {    return Form.serialize(this.element);  } }); if (!window.Event) var Event = { };

Object.extend(Event, { KEY_BACKSPACE: 8,  KEY_TAB:       9,  KEY_RETURN:   13,  KEY_ESC:      27,  KEY_LEFT:     37,  KEY_UP:       38,  KEY_RIGHT:    39,  KEY_DOWN:     40,  KEY_DELETE:   46,  KEY_HOME:     36,  KEY_END:      35,  KEY_PAGEUP:   33,  KEY_PAGEDOWN: 34,  KEY_INSERT:   45,

cache: { },

relatedTarget: function(event) { var element; switch(event.type) { case 'mouseover': element = event.fromElement; break; case 'mouseout': element = event.toElement;   break; default: return null; }   return Element.extend(element); } });

Event.Methods = (function { var isButton;

if (Prototype.Browser.IE) { var buttonMap = { 0: 1, 1: 4, 2: 2 }; isButton = function(event, code) { return event.button == buttonMap[code]; };

} else if (Prototype.Browser.WebKit) { isButton = function(event, code) { switch (code) { case 0: return event.which == 1 && !event.metaKey; case 1: return event.which == 1 && event.metaKey; default: return false; }   };

} else { isButton = function(event, code) { return event.which ? (event.which === code + 1) : (event.button === code); }; }

return { isLeftClick:  function(event) { return isButton(event, 0) }, isMiddleClick: function(event) { return isButton(event, 1) }, isRightClick: function(event) { return isButton(event, 2) },

element: function(event) { event = Event.extend(event);

var node         = event.target, type         = event.type, currentTarget = event.currentTarget;

if (currentTarget && currentTarget.tagName) { // Firefox screws up the "click" event when moving between radio buttons // via arrow keys. It also screws up the "load" and "error" events on images, // reporting the document as the target instead of the original image. if (type === 'load' || type === 'error' ||         (type === 'click' && currentTarget.tagName.toLowerCase === 'input' && currentTarget.type === 'radio')) node = currentTarget; }     if (node.nodeType == Node.TEXT_NODE) node = node.parentNode; return Element.extend(node); },

findElement: function(event, expression) { var element = Event.element(event); if (!expression) return element; var elements = [element].concat(element.ancestors); return Selector.findElement(elements, expression, 0); },

pointer: function(event) { var docElement = document.documentElement, body = document.body || { scrollLeft: 0, scrollTop: 0 }; return { x: event.pageX || (event.clientX +         (docElement.scrollLeft || body.scrollLeft) -          (docElement.clientLeft || 0)), y: event.pageY || (event.clientY +         (docElement.scrollTop || body.scrollTop) -          (docElement.clientTop || 0)) };   },

pointerX: function(event) { return Event.pointer(event).x }, pointerY: function(event) { return Event.pointer(event).y },

stop: function(event) { Event.extend(event); event.preventDefault; event.stopPropagation; event.stopped = true; } }; });

Event.extend = (function { var methods = Object.keys(Event.Methods).inject({ }, function(m, name) { m[name] = Event.Methods[name].methodize; return m; });

if (Prototype.Browser.IE) { Object.extend(methods, {     stopPropagation: function { this.cancelBubble = true },      preventDefault:  function { this.returnValue = false },      inspect: function { return "[object Event]" }    });

return function(event) { if (!event) return false; if (event._extendedByPrototype) return event;

event._extendedByPrototype = Prototype.emptyFunction; var pointer = Event.pointer(event); Object.extend(event, {       target: event.srcElement,        relatedTarget: Event.relatedTarget(event),        pageX:  pointer.x,        pageY:  pointer.y      }); return Object.extend(event, methods); };

} else { Event.prototype = Event.prototype || document.createEvent("HTMLEvents")['__proto__']; Object.extend(Event.prototype, methods); return Prototype.K; } });

Object.extend(Event, (function { var cache = Event.cache;

function getEventID(element) { if (element._prototypeEventID) return element._prototypeEventID[0]; arguments.callee.id = arguments.callee.id || 1; return element._prototypeEventID = [++arguments.callee.id]; }

function getDOMEventName(eventName) { if (eventName && eventName.include(':')) return "dataavailable"; return eventName; }

function getCacheForID(id) { return cache[id] = cache[id] || { }; }

function getWrappersForEventName(id, eventName) { var c = getCacheForID(id); return c[eventName] = c[eventName] || []; }

function createWrapper(element, eventName, handler) { var id = getEventID(element); var c = getWrappersForEventName(id, eventName); if (c.pluck("handler").include(handler)) return false;

var wrapper = function(event) { if (!Event || !Event.extend ||       (event.eventName && event.eventName != eventName)) return false;

Event.extend(event); handler.call(element, event); };

wrapper.handler = handler; c.push(wrapper); return wrapper; }

function findWrapper(id, eventName, handler) { var c = getWrappersForEventName(id, eventName); return c.find(function(wrapper) { return wrapper.handler == handler }); }

function destroyWrapper(id, eventName, handler) { var c = getCacheForID(id); if (!c[eventName]) return false; c[eventName] = c[eventName].without(findWrapper(id, eventName, handler)); }

function destroyCache { for (var id in cache) for (var eventName in cache[id]) cache[id][eventName] = null; }

// Internet Explorer needs to remove event handlers on page unload // in order to avoid memory leaks. if (window.attachEvent) { window.attachEvent("onunload", destroyCache); }

// Safari has a dummy event handler on page unload so that it won't // use its bfcache. Safari <= 3.1 has an issue with restoring the "document" // object when page is returned to via the back button using its bfcache. if (Prototype.Browser.WebKit) { window.addEventListener('unload', Prototype.emptyFunction, false); }

return { observe: function(element, eventName, handler) { element = $(element); var name = getDOMEventName(eventName);

var wrapper = createWrapper(element, eventName, handler); if (!wrapper) return element;

if (element.addEventListener) { element.addEventListener(name, wrapper, false); } else { element.attachEvent("on" + name, wrapper); }

return element; },

stopObserving: function(element, eventName, handler) { element = $(element); var id = getEventID(element), name = getDOMEventName(eventName);

if (!handler && eventName) { getWrappersForEventName(id, eventName).each(function(wrapper) {         element.stopObserving(eventName, wrapper.handler);        }); return element;

} else if (!eventName) { Object.keys(getCacheForID(id)).each(function(eventName) {         element.stopObserving(eventName);        }); return element; }

var wrapper = findWrapper(id, eventName, handler); if (!wrapper) return element;

if (element.removeEventListener) { element.removeEventListener(name, wrapper, false); } else { element.detachEvent("on" + name, wrapper); }

destroyWrapper(id, eventName, handler);

return element; },

fire: function(element, eventName, memo) { element = $(element); if (element == document && document.createEvent && !element.dispatchEvent) element = document.documentElement;

var event; if (document.createEvent) { event = document.createEvent("HTMLEvents"); event.initEvent("dataavailable", true, true); } else { event = document.createEventObject; event.eventType = "ondataavailable"; }

event.eventName = eventName; event.memo = memo || { };

if (document.createEvent) { element.dispatchEvent(event); } else { element.fireEvent(event.eventType, event); }

return Event.extend(event); } }; }));

Object.extend(Event, Event.Methods);

Element.addMethods({ fire:          Event.fire,  observe:       Event.observe,  stopObserving: Event.stopObserving });

Object.extend(document, { fire:          Element.Methods.fire.methodize,  observe:       Element.Methods.observe.methodize,  stopObserving: Element.Methods.stopObserving.methodize,  loaded:        false });

(function { /* Support for the DOMContentLoaded event is based on work by Dan Webb,     Matthias Miller, Dean Edwards and John Resig. */

var timer;

function fireContentLoadedEvent { if (document.loaded) return; if (timer) window.clearInterval(timer); document.fire("dom:loaded"); document.loaded = true; }

if (document.addEventListener) { if (Prototype.Browser.WebKit) { timer = window.setInterval(function {       if (/loaded|complete/.test(document.readyState))          fireContentLoadedEvent;      }, 0);

Event.observe(window, "load", fireContentLoadedEvent);

} else { document.addEventListener("DOMContentLoaded",       fireContentLoadedEvent, false); }

} else { document.write("<\/script>"); $("__onDOMContentLoaded").onreadystatechange = function { if (this.readyState == "complete") { this.onreadystatechange = null; fireContentLoadedEvent; }   };  } }); /*--- DEPRECATED ---*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = { Before: function(element, content) { return Element.insert(element, {before:content}); },

Top: function(element, content) { return Element.insert(element, {top:content}); },

Bottom: function(element, content) { return Element.insert(element, {bottom:content}); },

After: function(element, content) { return Element.insert(element, {after:content}); } };

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods // further below, that map to the newer Element methods. var Position = { // set to true if needed, warning: firefox performance problems // NOT neeeded for page scrolling, only if draggable contained in // scrollable elements includeScrollOffsets: false,

// must be called before calling withinIncludingScrolloffset, every time the // page is scrolled prepare: function { this.deltaX = window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft || 0;   this.deltaY =  window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0; },

// caches x/y coordinate pair to use with overlap within: function(element, x, y) { if (this.includeScrollOffsets) return this.withinIncludingScrolloffsets(element, x, y); this.xcomp = x;   this.ycomp = y;    this.offset = Element.cumulativeOffset(element);

return (y >= this.offset[1] &&           y <  this.offset[1] + element.offsetHeight &&            x >= this.offset[0] &&            x <  this.offset[0] + element.offsetWidth); },

withinIncludingScrolloffsets: function(element, x, y) { var offsetcache = Element.cumulativeScrollOffset(element);

this.xcomp = x + offsetcache[0] - this.deltaX; this.ycomp = y + offsetcache[1] - this.deltaY; this.offset = Element.cumulativeOffset(element);

return (this.ycomp >= this.offset[1] &&           this.ycomp <  this.offset[1] + element.offsetHeight &&            this.xcomp >= this.offset[0] &&            this.xcomp <  this.offset[0] + element.offsetWidth); },

// within must be called directly before overlap: function(mode, element) { if (!mode) return 0; if (mode == 'vertical') return ((this.offset[1] + element.offsetHeight) - this.ycomp) / element.offsetHeight; if (mode == 'horizontal') return ((this.offset[0] + element.offsetWidth) - this.xcomp) / element.offsetWidth; },

// Deprecation layer -- use newer Element methods now (1.5.2).

cumulativeOffset: Element.Methods.cumulativeOffset,

positionedOffset: Element.Methods.positionedOffset,

absolutize: function(element) { Position.prepare; return Element.absolutize(element); },

relativize: function(element) { Position.prepare; return Element.relativize(element); },

realOffset: Element.Methods.cumulativeScrollOffset,

offsetParent: Element.Methods.getOffsetParent,

page: Element.Methods.viewportOffset,

clone: function(source, target, options) { options = options || { }; return Element.clonePosition(target, source, options); } };

/*--*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){ function iter(name) { return name.blank ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]"; }

instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ? function(element, className) { className = className.toString.strip; var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className); return cond ? document._getElementsByXPath('.//*' + cond, element) : []; } : function(element, className) { className = className.toString.strip; var elements = [], classNames = (/\s/.test(className) ? $w(className) : null); if (!classNames && !className) return elements;

var nodes = $(element).getElementsByTagName('*'); className = ' ' + className + ' ';

for (var i = 0, child, cn; child = nodes[i]; i++) { if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) || (classNames && classNames.all(function(name) { return !name.toString.blank && cn.include(' ' + name + ' '); }))))       elements.push(Element.extend(child)); }   return elements; };

return function(className, parentElement) { return $(parentElement || document.body).getElementsByClassName(className); }; }(Element.Methods);

/*--*/

Element.ClassNames = Class.create; Element.ClassNames.prototype = { initialize: function(element) { this.element = $(element); },

_each: function(iterator) { this.element.className.split(/\s+/).select(function(name) {     return name.length > 0;    })._each(iterator); },

set: function(className) { this.element.className = className; },

add: function(classNameToAdd) { if (this.include(classNameToAdd)) return; this.set($A(this).concat(classNameToAdd).join(' ')); },

remove: function(classNameToRemove) { if (!this.include(classNameToRemove)) return; this.set($A(this).without(classNameToRemove).join(' ')); },

toString: function { return $A(this).join(' '); } };

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--*/

Element.addMethods;