sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" onhover";
		}
	sfEls[i].onmouseout=function() {
		this.className=this.className.replace(new RegExp(" onhover\\b"), "");
		}
	}
}
if (document.all && document.getElementById && !(navigator.appName == 'Microsoft Internet Explorer' && navigator.platform == 'MacPPC')) window.onload = sfHover