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"), "");
			    this.className="";
		    }
	    }
	}
}
window.onload=sfHover;

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