addListener(window, "load", loadMenus);

function loadMenus(){

	var menus = getElementsByClass('menu', document, 'UL')
	
	for (var i=0; i<menus.length; i++){	
		var menu = menus[i].childNodes;

		for (var j=0; j<(menu.length); j++){
			if (menu[j].tagName=="LI"){
				menu[j].onmouseover = function(){
					this.className="menuhover"
				}
				menu[j].onmouseout = function(){
					this.className=""
				}
			}
		}
	}
}