sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className=" sfhover";
			id = this.id;
			$("#"+id+ " UL").show();
		}
		sfEls[i].onmouseout=function() {
			//this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
			$("#"+id+ " UL").hide();
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);