title: Hide <rich:popupPanel> on escape key press
body: <p>I have a <code>&lt;rich:popupPanel&gt;</code> which I want to close on press of Escape key. The popup panel has an 'onclick' event, but no key events associated with it.
  I tried using the keyup event (jQuery) but nothing seems working in this case. Please note that I can only use Richfaces 3.3.x</p>