Multi level menus

From: http://silverstripe.com/site-builders-forum/flat/196808#post196834

<ul>
<% control Menu(1) %>
   <% if Children %>
      <li class="$LinkingMode"><a href="$Link" title="ADV: $Title.XML page" class="$LinkingMode"><span>$MenuTitle</span></a>
   <% else %>
      <li><a href="$Link" title="ADV: $Title.XML page" class="$LinkingMode"><span>$MenuTitle</span></a>
   <% end_if %>
   <% if LinkOrSection = section %>
   <% if Children %>
      <ul class="sub">
      <% control Children %>
         <li><a href="$Link" title="ADV: $Title.XML page" class="$LinkingMode">$MenuTitle</a></li>          
         <% if Children %>
         <ul class="subsub">
         <% control Children %>
            <li><a href="$Link" title="ADV: $Title.XML page" class="$LinkingMode">$MenuTitle</a></li>
         <% end_control %>
         </ul><!--.subsub-->
         <% end_if %>
      <% end_control %>
      </ul><!--.sub-->
   <% end_if %><!--if Children-->
   <% end_if %><!--if LinkOrSection-->
      </li><!-- end top level menu item-->
<% end_control %>
</ul>