if(typeof Effect=='undefined')
throw("accordion.js requires including script.aculo.us' effects.js library!");var Accordion=Class.create();Accordion.prototype={showAccordion:null,currentAccordion:null,duration:null,effects:[],animating:false,initialize:function(container,options){if(!$(container)){throw(container+" doesn't exist!");return false;}
this.options=Object.extend({resizeSpeed:8,classNames:{toggle:'accordion_toggle',toggleActive:'accordion_toggle_active',content:'accordion_content'},defaultSize:{height:null,width:null},direction:'vertical',onEvent:'click',onClick:function(){}},options||{});this.duration=((11-this.options.resizeSpeed)*0.15);var accordions=$$('#'+container+' .'+this.options.classNames.toggle);accordions.each(function(accordion){Event.observe(accordion,this.options.onEvent,this.activate.bind(this,accordion),false);if(this.options.onEvent=='click'){accordion.onclick=function(){return false;};}
if(this.options.direction=='horizontal'){var options={width:'0px'};}else{var options={height:'0px'};}
options=Object.extend(options,{display:'none'});this.currentAccordion=$(accordion.next(0)).setStyle(options);}.bind(this));},activate:function(accordion){if(this.animating){return false;}
this.effects=[];this.currentAccordion=$(accordion.next(0));if(this.options["onClick"](this.currentAccordion)==false){return;}
this.currentAccordion.setStyle({display:'block'});this.currentAccordion.previous(0).addClassName(this.options.classNames.toggleActive);if(this.options.direction=='horizontal'){this.scaling={scaleX:true,scaleY:false};}else{this.scaling={scaleX:false,scaleY:true};}
if(this.currentAccordion==this.showAccordion){this.deactivate();}else{this._handleAccordion();}},deactivate:function(){var options=Object.extend({duration:this.duration,scaleContent:false,transition:Effect.Transitions.sinoidal,queue:{position:'end',scope:'accordionAnimation'},scaleMode:{originalHeight:this.options.defaultSize.height?this.options.defaultSize.height:this.currentAccordion.scrollHeight,originalWidth:this.options.defaultSize.width?this.options.defaultSize.width:this.currentAccordion.scrollWidth},afterFinish:function(){this.showAccordion.setStyle({height:'auto',display:'none'});this.showAccordion=null;this.animating=false;}.bind(this)},this.scaling);this.showAccordion.previous(0).removeClassName(this.options.classNames.toggleActive);new Effect.Scale(this.showAccordion,0,options);},_handleAccordion:function(){var options=Object.extend({sync:true,scaleFrom:0,scaleContent:false,transition:Effect.Transitions.sinoidal,scaleMode:{originalHeight:this.options.defaultSize.height?this.options.defaultSize.height:this.currentAccordion.scrollHeight,originalWidth:this.options.defaultSize.width?this.options.defaultSize.width:this.currentAccordion.scrollWidth}},this.scaling);this.effects.push(new Effect.Scale(this.currentAccordion,100,options));if(this.showAccordion){this.showAccordion.previous(0).removeClassName(this.options.classNames.toggleActive);options=Object.extend({sync:true,scaleContent:false,transition:Effect.Transitions.sinoidal},this.scaling);this.effects.push(new Effect.Scale(this.showAccordion,0,options));}
new Effect.Parallel(this.effects,{duration:this.duration,queue:{position:'end',scope:'accordionAnimation'},beforeStart:function(){this.animating=true;}.bind(this),afterFinish:function(){if(this.showAccordion){this.showAccordion.setStyle({display:'none'});}
$(this.currentAccordion).setStyle({height:'auto'});this.showAccordion=this.currentAccordion;this.animating=false;}.bind(this)});}}