window.addEvent("domready", function() {
	$$(".menu ul li").each(function(el)
	{
		el.getElements("ul").each(function(inside)
		{	
			inside.setStyle("display","block");
			var dimensions = inside.getSize();
			inside.setStyle("height","0px");
			inside.setStyle("width","0px");
			inside.setStyle("overflow","hidden");
			inside.setStyle("opacity",0);
			el.addEvent("mouseenter",function(){
				el.getElements("ul").each(function(inside)
				{	
					inside.morph({"height":dimensions.y,"width":dimensions.x,"opacity":1});
				});
			});
			el.addEvent("mouseleave",function(){
				el.getElements("ul").each(function(inside)
				{	
// 					inside.morph({"height":0,"width":0,"opacity":0}); // pro plynuly prechod odkomentovat a zakomentovat zbytek funkce
					var m = inside.get("morph");
					m.cancel();
					inside.setStyle("height",0);
					inside.setStyle("width",0);
					inside.setStyle("opacity",0);
				});
			});
			
			// fade na jednotlivych polozkach menu
			inside.getElements("li a").each(function(item){
				item.addEvent("mouseenter",function(){
					this.set('morph', {duration: '10'}); // v pripade potreby mozno upravit, cas v ms
					this.morph(".menu ul li ul li a.hover");
				})
				item.addEvent("mouseleave",function(){
					this.set('morph', {duration: '500'}); // v pripade potreby mozno upravit, cas v ms
					this.morph(".menu ul li ul li a");
				});
			});
		});
	});
});