startList = function() {
if (document.all&&document.getElementById) {
    navRoot = document.getElementById("navmenu");
        for (i=0; i<navRoot.childNodes.length; i++) {
            node = navRoot.childNodes[i];
                if (node.nodeName=="LI") {
                    node.onmouseover=function() {
                    this.className+="over";
                }
                node.onmouseout=function() {
                    this.className=this.className.replace("over", "");
                }
            }
        }
    }
}

window.onload=startList;