sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (document.all) { //MS IE 
	if (window.attachEvent) window.attachEvent("onload", sfHover);
	else { //IE 5.2 Mac does not  support attachEvent 
	var old = window.onload; 
	window.onload = function() { if (old) old(); sfHover(); }
	} 
}