title: JavaScript tree functionality without framework
body: <p>I'd like to display a tree on a Facebook page with JavaScript.  Therefore there can be no dependencies on frameworks such as jQuery or <a href="http://en.wikipedia.org/wiki/Ext_%28JavaScript_library%29" rel="nofollow noreferrer">Ext</a> which won't run on Facebook, at least as far as I know when I last worked on that platform (April 2009).  Can anybody recommend a "framework-free" JavaScript/tree library?  I have ported some fairly complex JavaScript to Facebook so I'm sure I'll be able to port just about any existing pure JavaScript library.</p>
  
  <p>Clarification points:</p>
  
  <ul>
  <li>I am targeting <a href="http://en.wikipedia.org/wiki/Facebook_features#Facebook_Markup_Language" rel="nofollow noreferrer">FBJS</a></li>
  <li>I too can (and did) google for JavaScript/tree engines but am seeking recommendations as to which one(s)</li>
  </ul>