function startList() {
    if (document.all&&document.getElementById) {
        navRoot = document.getElementById("nav");
        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", "");
            }
          }
        }
    }
    return false;
}