/* Menu animé */
var Menu = function(menuId,sliderId){
	var menu = $(menuId);
	var items = menu.getElements("a"); 
	var slider = $(sliderId);
	var selected = menu.getElement("li.selected a");
	if (menu && slider){
		var fx = new Fx.Morph(slider, {duration:100, wait:false});
		var select = function(element){
			if (element){
				slider.style.display = "block";
				fx.start({
					'left' : [element.getLeft()],
					'width' : [element.getStyle('width').toInt()+element.getStyle('padding-left').toInt()+element.getStyle('padding-right').toInt()]
				});
			}else{
				slider.style.display = "none";
			}
		};
		select(selected);
		items.each(function(item) {
			item.addEvent('mouseenter', function(){
				select(item);
			});
			item.addEvent('mouseleave', function(){
				select(selected);
			});
		});
	}
}