title: EXTJS: treepanel move a branch programmatically
body: <p>I have a tree where users can drag and drop branches.  </p>
  
  <p>Now this works all well and good, but I need to be able to move a branch programmatically.  </p>
  
  <p>I need to simulate a cut and paste (I will have the user using buttons instead of <kbd>Ctrl</kbd>- <kbd>X</kbd> and <kbd>V</kbd>).</p>
  
  <p>Does anyone have an idea of where I should start?</p>