jQuery UI 1.9 Milestone 2 - does Menu support nested menus?

jQuery UI 1.9 Milestone 2 - does Menu support nested menus?

The menu in milestone 2 looks good in the popup menu.  The wiki page mentions all sorts of other types of menu that this script will support.  Does milestone 2 not support these types of menus yet, or is it just lacking in demos?
 
Specifically, I'm looking for menu bar capability per Visual design E2 on the wiki ( http://wiki.jqueryui.com/Menu).  I called menu on my top level ul and it shows the sub menu list in the same menu as the parent list item.
 
Here is my test page:
 
<html lang="en">
<head>
 <meta charset="UTF-8" />
 <title>jQuery UI Menu - Nested Menu demo</title>
 <link type="text/css" href="css/jquery-ui.css" rel="stylesheet" />
 <script type="text/javascript" src="src/jquery-1.4.2.js"></script>
 <script type="text/javascript" src="src/jquery-ui.js"></script>
 <link type="text/css" href="demos.css" rel="stylesheet" />
 <script type="text/javascript">
 $(function() {
  $("#menu1").menu();
 });
 </script>
 <style>
  .ui-menu { width: 200px; position: absolute; }
 </style>
</head>
<body>
<ul id="menu1" class="ui-menu">
 <li><a href="http://google.com">Google</a></li>
 <li><a href="http://yahoo.com">Yahoo</a></li>
 <li><a href="http://msn.com">MSN</a>
  <ul>
   <li><a href="htp://sub1.example.com">sub-level</a></li>
   <li><a href="http://sub2.example.com">sub-level</a></li>
  </ul>
 </li>
 <li><a href="http://ask.com">Ask</a></li>
 <li><a href="http://aol.com">AOL</a></li>
</ul>
</body>
</html>