{foreach from=$index item=page}
  <ul class="nav">
    {navItem page=$page active=$id}

    <ul class="nav">
      {foreach from=$page.children item=page}
      {navDivider page=$page}
        {navItem page=$page active=$id}
      </li>
    {/foreach}
    </ul>

    </li>
  </ul>
{/foreach}