<html xmlns:py="http://genshi.edgewall.org/" 
  xmlns:xi="http://www.w3.org/2001/XInclude"
  >

  <py:def function="page_title">Maintenance</py:def> 

  <div py:match="content">
    Unfortunately this page is offline for maintenance. Please
    bear with us and try again soon.
  </div>

  <xi:include href="base.html" />
</html>
