sfHover = function() {
	if(document.getElementById("nav") != null)
	{
	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 (window.attachEvent) window.attachEvent("onload", sfHover); */

if (window.addEventListener) //DOM method for binding an event
window.addEventListener("load", sfHover, false)
else if (window.attachEvent) //IE exclusive method for binding an event
window.attachEvent("onload", sfHover)
else if (document.getElementById) //support older modern browsers
window.onload=sfHover