title: IE9 Popup window hiding on hover/focus
body: <p>I have got a primefaces button with an onclick that calls a function with this in it:</p>
  
  <pre><code>popup = window.open(urlToOpen, windowName, params);
  if (!popup.opener) {
      popup.opener = self;
  }
  popup.focus();
  </code></pre>
  
  <p>And then the popup shows but as soon as I hover(I'm not clicking!) over any primefaces button in the parent window the popup loses focus.</p>
  
  <p>Does anyone have any idea why this problem might occur?</p>