<ol class="tree">
  <li class="file"><a href="root"><span class="icon"></span>root</a></li>      <li>
        <label>folder0</label> <input type="checkbox" checked />
        <ol>
  <li class="file"><a href="folder0/0"><span class="icon"></span>0</a></li></ol></li>
      <li>
        <label>folder1</label> <input type="checkbox" checked />
        <ol>
  <li class="file"><a href="folder1/1"><span class="icon"></span>1</a></li></ol>