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