?// script.aculo.us effects.js v1.7.0, Fri Jan 19 19:16:36 CET 2007// Copyright (c) 2005, 2006 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)// Contributors://  Justin Palmer (http://encytemedia.com/)//  Mark Pilgrim (http://diveintomark.org/)//  Martin Bialasinki// // script.aculo.us is freely distributable under the terms of an MIT-style license.// For details, see the script.aculo.us web site: http://script.aculo.us/ // converts rgb() and #xxx to #xxxxxx format,  // returns self (or first argument) if not convertable  String.prototype.parseColor = function() {    var color = '#';  if(this.slice(0,4) == 'rgb(') {      var cols = this.slice(4,this.length-1).split(',');      var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);    } else {      if(this.slice(0,1) == '#') {        if(this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();        if(this.length==7) color = this.toLowerCase();      }    }    return(color.length==7 ? color : (arguments[0] || this));  }/*--------------------------------------------------------------------------*/Element.collectTextNodes = function(element) {    return $A($(element).childNodes).collect( function(node) {    return (node.nodeType==3 ? node.nodeValue :       (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));  }).flatten().join('');}Element.collectTextNodesIgnoreClass = function(element, className) {    return $A($(element).childNodes).collect( function(node) {    return (node.nodeType==3 ? node.nodeValue :       ((node.hasChildNodes() && !Element.hasClassName(node,className)) ?         Element.collectTextNodesIgnoreClass(node, className) : ''));  }).flatten().join('');}Element.setContentZoom = function(element, percent) {  element = $(element);    element.setStyle({fontSize: (percent/100) + 'em'});     if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);  return element;}Element.getOpacity = function(element){  return $(element).getStyle('opacity');}Element.setOpacity = function(element, value){  return $(element).setStyle({opacity:value});}Element.getInlineOpacity = function(element){  return $(element).style.opacity || '';}Element.forceRerendering = function(element) {  try {    element = $(element);    var n = document.createTextNode(' ');    element.appendChild(n);    element.removeChild(n);  } catch(e) { }};/*--------------------------------------------------------------------------*/Array.prototype.call = function() {  var args = arguments;  this.each(function(f){ f.apply(this, args) });}/*--------------------------------------------------------------------------*/var Effect = {  _elementDoesNotExistError: {    name: 'ElementDoesNotExistError',    message: 'The specified DOM element does not exist, but is required for this effect to operate'  },  tagifyText: function(element) {    if(typeof Builder == 'undefined')      throw("Effect.tagifyText requires including script.aculo.us' builder.js library");          var tagifyStyle = 'position:relative';    if(/MSIE/.test(navigator.userAgent) && !window.opera) tagifyStyle += ';zoom:1';        element = $(element);    $A(element.childNodes).each( function(child) {      if(child.nodeType==3) {        child.nodeValue.toArray().each( function(character) {          element.insertBefore(            Builder.node('span',{style: tagifyStyle},              character == ' ' ? String.fromCharCode(160) : character),               child);        });        Element.remove(child);      }    });  },  multiple: function(element, effect) {    var elements;    if(((typeof element == 'object') ||         (typeof element == 'function')) &&        (element.length))      elements = element;    else      elements = $(element).childNodes;          var options = Object.extend({      speed: 0.1,      delay: 0.0    }, arguments[2] || {});    var masterDelay = options.delay;    $A(elements).each( function(element, index) {      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));    });  },  PAIRS: {    'slide':  ['SlideDown','SlideUp'],    'blind':  ['BlindDown','BlindUp'],    'appear': ['Appear','Fade']  },  toggle: function(element, effect) {    element = $(element);    effect = (effect || 'appear').toLowerCase();    var options = Object.extend({      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }    }, arguments[2] || {});    Effect[element.visible() ?       Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);  }};var Effect2 = Effect; // deprecated/* ------------- transitions ------------- */Effect.Transitions = {  linear: Prototype.K,  sinoidal: function(pos) {    return (-Math.cos(pos*Math.PI)/2) + 0.5;  },  reverse: function(pos) {    return 1-pos;  },  flicker: function(pos) {    return ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;  },  wobble: function(pos) {    return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;  },  pulse: function(pos, pulses) {     pulses = pulses || 5;     return (      Math.round((pos % (1/pulses)) * pulses) == 0 ?             ((pos * pulses * 2) - Math.floor(pos * pulses * 2)) :         1 - ((pos * pulses * 2) - Math.floor(pos * pulses * 2))      );  },  none: function(pos) {    return 0;  },  full: function(pos) {    return 1;  }};/* ------------- core effects ------------- */Effect.ScopedQueue = Class.create();Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {  initialize: function() {    this.effects  = [];    this.interval = null;  },  _each: function(iterator) {    this.effects._each(iterator);  },  add: function(effect) {    var timestamp = new Date().getTime();        var position = (typeof effect.options.queue == 'string') ?       effect.options.queue : effect.options.queue.position;        switch(position) {      case 'front':        // move unstarted effects after this effect          this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {            e.startOn  += effect.finishOn;            e.finishOn += effect.finishOn;          });        break;      case 'with-last':        timestamp = this.effects.pluck('startOn').max() || timestamp;        break;      case 'end':        // start effect after last queued effect has finished        timestamp = this.effects.pluck('finishOn').max() || timestamp;        break;    }        effect.startOn  += timestamp;    effect.finishOn += timestamp;    if(!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))      this.effects.push(effect);        if(!this.interval)       this.interval = setInterval(this.loop.bind(this), 15);  },  remove: function(effect) {    this.effects = this.effects.reject(function(e) { return e==effect });    if(this.effects.length == 0) {      clearInterval(this.interval);      this.interval = null;    }  },  loop: function() {    var timePos = new Date().getTime();    for(var i=0, len=this.effects.length;i<len;i++)       if(this.effects[i]) this.effects[i].loop(timePos);  }});Effect.Queues = {  instances: $H(),  get: function(queueName) {    if(typeof queueName != 'string') return queueName;        if(!this.instances[queueName])      this.instances[queueName] = new Effect.ScopedQueue();          return this.instances[queueName];  }}Effect.Queue = Effect.Queues.get('global');Effect.DefaultOptions = {  transition: Effect.Transitions.sinoidal,  duration:   1.0,   // seconds  fps:        60.0,  // max. 60fps due to Effect.Queue implementation  sync:       false, // true for combining  from:       0.0,  to:         1.0,  delay:      0.0,  queue:      'parallel'}Effect.Base = function() {};Effect.Base.prototype = {  position: null,  start: function(options) {    this.options      = Object.extend(Object.extend({},Effect.DefaultOptions), options || {});    this.currentFrame = 0;    this.state        = 'idle';    this.startOn      = this.options.delay*1000;    this.finishOn     = this.startOn + (this.options.duration*1000);    this.event('beforeStart');    if(!this.options.sync)      Effect.Queues.get(typeof this.options.queue == 'string' ?         'global' : this.options.queue.scope).add(this);  },  loop: function(timePos) {    if(timePos >= this.startOn) {      if(timePos >= this.finishOn) {        this.render(1.0);        this.cancel();        this.event('beforeFinish');        if(this.finish) this.finish();         this.event('afterFinish');        return;        }      var pos   = (timePos - this.startOn) / (this.finishOn - this.startOn);      var frame = Math.round(pos * this.options.fps * this.options.duration);      if(frame > this.currentFrame) {        this.render(pos);        this.currentFrame = frame;      }    }  },  render: function(pos) {    if(this.state == 'idle') {      this.state = 'running';      this.event('beforeSetup');      if(this.setup) this.setup();      this.event('afterSetup');    }    if(this.state == 'running') {      if(this.options.transition) pos = this.options.transition(pos);      pos *= (this.options.to-this.options.from);      pos += this.options.from;      this.position = pos;      this.event('beforeUpdate');      if(this.update) this.update(pos);      this.event('afterUpdate');    }  },  cancel: function() {    if(!this.options.sync)      Effect.Queues.get(typeof this.options.queue == 'string' ?         'global' : this.options.queue.scope).remove(this);    this.state = 'finished';  },  event: function(eventName) {    if(this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);    if(this.options[eventName]) this.options[eventName](this);  },  inspect: function() {    var data = $H();    for(property in this)      if(typeof this[property] != 'function') data[property] = this[property];    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';  }}Effect.Parallel = Class.create();Object.extend(Object.extend(Effect.Parallel.prototype, Effect.Base.prototype), {  initialize: function(effects) {    this.effects = effects || [];    this.start(arguments[1]);  },  update: function(position) {    this.effects.invoke('render', position);  },  finish: function(position) {    this.effects.each( function(effect) {      effect.render(1.0);      effect.cancel();      effect.event('beforeFinish');      if(effect.finish) effect.finish(position);      effect.event('afterFinish');    });  }});Effect.Event = Class.create();Object.extend(Object.extend(Effect.Event.prototype, Effect.Base.prototype), {  initialize: function() {    var options = Object.extend({      duration: 0    }, arguments[0] || {});    this.start(options);  },  update: Prototype.emptyFunction});Effect.Opacity = Class.create();Object.extend(Object.extend(Effect.Opacity.prototype, Effect.Base.prototype), {  initialize: function(element) {    this.element = $(element);    if(!this.element) throw(Effect._elementDoesNotExistError);    // make this work on IE on elements without 'layout'    if(/MSIE/.test(navigator.userAgent) && !window.opera && (!this.element.currentStyle.hasLayout))      this.element.setStyle({zoom: 1});    var options = Object.extend({      from: this.element.getOpacity() || 0.0,