title: Open new window by POST using h:commandButton
body: <p>I need to open a JSF page in a new window by POST on click of a <code>&lt;h:commandButton&gt;</code>. I know I can acheive this using the JavaScript. But I would like to achive this using JSF and not JavaScript.</p>
  
  <p>How can I achieve this? I'm using JSF 2.0.</p>