startList = function() {
  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", "");
    }
   }
  }
 }
}
//window.onload=startList;