/* setup topnav rollovers */
function topNav(){
	$('topNav').getElements('li').addEvent('mouseover',function(event){
		if(this.getElement('img')&&this.getElement('img').className.indexOf("noHover")==-1){
			var offSrc=this.getElement('img').src;
			if(offSrc.length>0&&(this.getParent('ul').id=="topNav")){
				if(offSrc.indexOf("_on.gif")==-1){
					this.getElement('img').src=(offSrc.substr(0,offSrc.indexOf(".gif"))+"_on.gif");
				}
			}
		}
	});
	$('topNav').getElements('li').addEvent('mouseout',function(event){
		if(this.getElement('img')&&this.getElement('img').className.indexOf("noHover")==-1){	   
			var onSrc=this.getElement('img').src;
			if(onSrc.length>0&&(this.getParent('ul').id=="topNav")){
				if(onSrc.indexOf("_on.gif")>-1){
					this.getElement('img').src=(onSrc.substr(0,onSrc.indexOf("_on.gif"))+".gif");
				}
			}
		}
	});
	$('topNav').getElements('li li').addEvent('mouseover',function(event){
		if(this.getElement('img')){
			var theImg=this.getElement('img');
			if(theImg.className!="imgLoaded"){
				theImg.src="media/images/category/"+theImg.className;
				theImg.className="imgLoaded";
			}
			theImg.setStyle('display','inline');
		}
	});
	$('topNav').getElements('li li').addEvent('mouseout',function(event){
		if(this.getElement('img')){
			var theImg=this.getElement('img');
			theImg.setStyle('display','none');
		}
	});
	var theLists=$('topNav').getElements('li');
	
	$each(theLists,function(list){
		if(list.getElement('ul')){
			var imgElem=new Element ('img', {'src': 'media/images/chrome/topnav/downArrow.gif' , 'class':'downArrow'}) ;
			imgElem.inject(list);
		}
	});
}