sfHover = function() {
            var sfEls = document.getElementById("navbar").getElementsByTagName("li");
            for (var i=0; i<sfEls.length; i++) {
                sfEls[i].onmouseover=function() {
                    this.className+=" hover";
                }
                sfEls[i].onmouseout=function() {
                    this.className=this.className.replace(new RegExp(" hover\\b"), "");
                }
            }
        }
        if (window.attachEvent) window.attachEvent("onload", sfHover);