Using XSLT to Generate a Multi-level Tree Menu from XML

<?xml version="1.0"?>
<menu>
 <entry>
  <text>In-House</text>
  <url>InHouse.htm</url>
  <entry>
   <text>Web Development</text>
   <url>WebDev.htm</url>
   <entry>
    <text>Standards</text>
    <url>WebStandards.htm</url>
   </entry>
   <entry>
    <text>FAQ</text>
    <url>WebFAQ.htm</url>
   </entry>
  </entry>
  <entry>
   <text>VB Development</text>
   <url>VBDev.htm</url>
  </entry>
 </entry>
 <entry>
  <text>Microsoft</text>
  <url>http://www.microsoft.com/ms.htm</url>
 </entry>
</menu>