title: rerender part of parent window from a popup window
body: <p>I have a xhtml page with a button that opens a popup window, I want to reRender part of the parent xhtml page from the popup window ( for example by clicking a button on popup, I want to reRender part of the parent window). I have read a few post , most of them give up by not using a popup window 
  (I  don't like popups but in this case I have no choice)</p>
  
  <p>Does anyone know a solution for this problem?</p>