function startList() {
    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", "");
            }
         }
        }
     }
}