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;