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", "");
   }
  }
 }
}
}
window.onload = startList;