filterList = function() {
if (document.all&&document.getElementById) 
{
 if (document.getElementById("nav"))
  {
   filterRoot = document.getElementById("nav"); 
   for (i=0; i<filterRoot.childNodes.length; i++) 
    {
     node = filterRoot.childNodes[i];
     if (node.nodeName=="LI" && node.className != "first")  
      {
       node.onmouseover=function() {
         this.className+="over";
        }
       node.onmouseout=function() {
         this.className=this.className.replace("over", "");
        }
      }
     }
    }
  }
}
window.onload=filterList;