RadTreeView for ASP.NET AJAX

<script language="javascript" type="text/javascript">        
    function pageLoad()
    {
         var tree = $find("<%= RadTreeView1.ClientID %>");
         var node = tree.findNodeByText("The Text Of The Needed Node");
         // or
         //var node = tree.findNodeByValue("The Value Of The Needed Node");  

         node = node.get_parent();

         while(node != null)
        {
          if (node.expand)
          {
           node.expand();
          }

         node = node.get_parent();
        }
    }
</script>