menuHover = function() {
		   var navRoot = document.getElementById("menu").getElementsByTagName("li");
		   for (var i=0; i<navRoot.length; i++) {
			   navRoot[i].onmouseover=function() {
				   this.className+=" menuHover";
			   }
			   navRoot[i].onmouseout=function() {
				   this.className=this.className.replace(new RegExp(" menuHover\\b"), "");
			   }
		   }
   }
   if (window.attachEvent) window.attachEvent("onload", menuHover);