<div class="css-treeview">
    <ul>
      <li>
        <input type="checkbox", id="something", checked="checked" />
        <label for="something">Some Caption</label>
        <ul>
          <li><a href="some/link">Some Text</a></li>
          <li><a href="some/link">Some Text</a></li>
          <li><a href="some/link">Some Text</a></li>
          <li>
            <input type="checkbox", id="some-other-thing", checked ="checked" />
            <label for="some-other-thing">Some Secondary Caption</label>
            <ul>
              <li>
                <input type="checkbox", id="some-completely-other-thing", checked="checked" />
                <label for="some-completely-other-thing">The Third Caption</label>
                <ul>
                  <li><a href="some/link">Some Text</a></li>
                  <li><a href="some/link">Some Text</a></li>
                  <li><a href="some/link">Some Text</a></li>
                  <li><a href="some/link">Some Text</a></li>
                </ul>
              </li>
            </ul>
          </li>
        </ul>
      </li>
    </ul>
</div>
​