navHover = function() {
            var lis = document.getElementById("navmenu1").getElementsByTagName("LI");
            for (var i=0; i<lis.length; i++) {
                lis[i].onmouseover=function() {
                    this.className+=" iehover";
                }
                lis[i].onmouseout=function() {
                    this.className=this.className.replace(new RegExp(" iehover\\b"), "");
                }
                
            }
        }
        if (window.attachEvent) window.attachEvent("onload", navHover);