title: how to create ExtJs 4 Tree inside accordion using store?
body: <p>I have an application with possibly 4 level menu,</p>
  
  <p>i want to implement it with Accordion for first level and a tree inside each accordion panel.</p>
  
  <p>how could i implement this with a store?</p>
  
  <p><a href="http://i.stack.imgur.com/DFQDl.png" rel="nofollow">http://i.stack.imgur.com/DFQDl.png</a></p>