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;