function sfHover() {
    var gnav = document.getElementById("portal-globalnav");
    if (gnav == null) {
        return;
    }
	var sfEls = gnav.getElementsByTagName("LI");
    //alert("DEBUG");
	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);
}