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