1startList = function() {
2  if (document.all&&document.getElementById) {
3    navRoot = document.getElementById("nav");
4    for (i=0; i<navRoot.childNodes.length; i++) {
5      node = navRoot.childNodes[i];
6      if (node.nodeName=="LI") {
7        node.onmouseover=function() {
8          this.className+=" over";
9        }
10        node.onmouseout=function() {
11          this.className=this.className.replace(" over", "");
12        }
13      }
14    }
15  }
16}
17window.onload=startList;
18