sfHover = function() {
    var myMenus=['hmenu', 'vmenu'];
    for (var menu in myMenus) {
  var sfEls = document.getElementById(myMenus[menu]).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);