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) {
	if (window.attachEvent) { 
		//IE Win
		window.attachEvent("onload", sfHover);
	} else { 
		//IE Mac does not support attachEvent
		var old = window.onload;
		window.onload = function() { 
			if (old) old(); 
			sfHover();
		}
	}
}