function startList()
{
 if (document.all&&document.getElementById) {
	var navRoot = document.getElementById("cnav");
	var allNavChildNodes = navRoot.childNodes.length;
	for (var i=0; i < allNavChildNodes; i++)
	{
		var 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;