update samples nav for new script

<ul id="nav">

<ul id="nav" class="samples-nav">

<script type="text/javascript">

<!--

//-->

</script>

  <li class="nav-section">

    <div class="nav-section-header"><a href="/samples/index.html">

    <div class="nav-section-header empty"><a href="/samples/index.html">

      <span class="en">About the Samples</span></a>

    </div>

  </li>

  <li id="samples-tree-list" class="nav-section">

    <div class="nav-section-header"><a href="/samples/index.html">

      <span class="en">Root Node (remove)</span></a>

    </div>

  </li>

</ul>