var fx=new Object();fx.Base=function(){};fx.Base.prototype={setOptions:function(a){this.options={duration:500,onComplete:"",transition:fx.sinoidal};Object.extend(this.options,a||{})},step:function(){var b=(new Date).getTime();if(b>=this.options.duration+this.startTime){this.now=this.to;clearInterval(this.timer);this.timer=null;if(this.options.onComplete){setTimeout(this.options.onComplete.bind(this),10)}}else{var a=(b-this.startTime)/(this.options.duration);this.now=this.options.transition(a)*(this.to-this.from)+this.from}this.increase()},custom:function(b,a){if(this.timer!=null){return}this.from=b;this.to=a;this.startTime=(new Date).getTime();this.timer=setInterval(this.step.bind(this),13)},hide:function(){this.now=0;this.increase()},clearTimer:function(){clearInterval(this.timer);this.timer=null}};fx.Layout=Class.create();fx.Layout.prototype=Object.extend(new fx.Base(),{initialize:function(b,a){this.el=$(b);this.el.style.overflow="hidden";this.iniWidth=this.el.offsetWidth;this.iniHeight=this.el.offsetHeight;this.setOptions(a)}});fx.Height=Class.create();Object.extend(Object.extend(fx.Height.prototype,fx.Layout.prototype),{increase:function(){this.el.style.height=this.now+"px"},toggle:function(){if(this.el.offsetHeight>0){this.custom(this.el.offsetHeight,0)}else{this.custom(0,this.el.scrollHeight)}}});fx.Width=Class.create();Object.extend(Object.extend(fx.Width.prototype,fx.Layout.prototype),{increase:function(){this.el.style.width=this.now+"px"},toggle:function(){if(this.el.offsetWidth>0){this.custom(this.el.offsetWidth,0)}else{this.custom(0,this.iniWidth)}}});fx.Opacity=Class.create();fx.Opacity.prototype=Object.extend(new fx.Base(),{initialize:function(b,a){this.el=$(b);this.now=1;this.increase();this.setOptions(a)},increase:function(){if(this.now==1&&(/Firefox/.test(navigator.userAgent))){this.now=0.9999}this.setOpacity(this.now)},setOpacity:function(a){if(a==0&&this.el.style.visibility!="hidden"){this.el.style.visibility="hidden"}else{if(this.el.style.visibility!="visible"){this.el.style.visibility="visible"}}if(window.ActiveXObject){this.el.style.filter="alpha(opacity="+a*100+")"}this.el.style.opacity=a},toggle:function(){if(this.now>0){this.custom(1,0)}else{this.custom(0,1)}}});fx.sinoidal=function(a){return((-Math.cos(a*Math.PI)/2)+0.5)};fx.linear=function(a){return a};fx.cubic=function(a){return Math.pow(a,3)};fx.circ=function(a){return Math.sqrt(a)};