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;