startList = function()
{
   if (document.all&&document.getElementById)
   {
      navRoot = document.getElementById("mainMenu").childNodes[0];
      
      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;