var Accordion=Fx.Elements.extend({options:{onActive:Class.empty,onBackground:Class.empty,display:0,show:false,height:true,width:false,opacity:true,fixedHeight:false,fixedWidth:false,wait:false,alwaysHide:false},initialize:function(){var options,togglers,elements,container;$each(arguments,function(argument,i){switch($type(argument)){case'object':options=argument;break;case'element':container=$(argument);break;default:var temp=$$(argument);if(!togglers)togglers=temp;else elements=temp}});this.togglers=togglers||[];this.elements=elements||[];this.container=$(container);this.setOptions(options);this.previous=-1;if(this.options.alwaysHide)this.options.wait=true;if($chk(this.options.show)){this.options.display=false;this.previous=this.options.show}if(this.options.start){this.options.display=false;this.options.show=false}this.effects={};if(this.options.opacity)this.effects.opacity='fullOpacity';if(this.options.width)this.effects.width=this.options.fixedWidth?'fullWidth':'offsetWidth';if(this.options.height)this.effects.height=this.options.fixedHeight?'fullHeight':'scrollHeight';for(var i=0,l=this.togglers.length;i<l;i++)this.addSection(this.togglers[i],this.elements[i]);this.elements.each(function(el,i){if(this.options.show===i){this.fireEvent('onActive',[this.togglers[i],el])}else{for(var fx in this.effects)el.setStyle(fx,0)}},this);this.parent(this.elements);if($chk(this.options.display))this.display(this.options.display)},addSection:function(toggler,element,pos){toggler=$(toggler);element=$(element);var test=this.togglers.contains(toggler);var len=this.togglers.length;this.togglers.include(toggler);this.elements.include(element);if(len&&(!test||pos)){pos=$pick(pos,len-1);toggler.injectBefore(this.togglers[pos]);element.injectAfter(toggler)}else if(this.container&&!test){toggler.inject(this.container);element.inject(this.container)}var idx=this.togglers.indexOf(toggler);toggler.addEvent('click',this.display.bind(this,idx));if(this.options.height)element.setStyles({'padding-top':0,'border-top':'none','padding-bottom':0,'border-bottom':'none'});if(this.options.width)element.setStyles({'padding-left':0,'border-left':'none','padding-right':0,'border-right':'none'});element.fullOpacity=1;if(this.options.fixedWidth)element.fullWidth=this.options.fixedWidth;if(this.options.fixedHeight)element.fullHeight=this.options.fixedHeight;element.setStyle('overflow','hidden');if(!test){for(var fx in this.effects)element.setStyle(fx,0)}return this},display:function(index){index=($type(index)=='element')?this.elements.indexOf(index):index;if((this.timer&&this.options.wait)||(index===this.previous&&!this.options.alwaysHide))return this;this.previous=index;var obj={};this.elements.each(function(el,i){obj[i]={};var hide=(i!=index)||(this.options.alwaysHide&&(el.offsetHeight>0));this.fireEvent(hide?'onBackground':'onActive',[this.togglers[i],el]);for(var fx in this.effects)obj[i][fx]=hide?0:el[this.effects[fx]]},this);return this.start(obj)},showThisHideOpen:function(index){return this.display(index)}});Fx.Accordion=Accordion;