title: firefox + flash disabled the ALT GR key : how to solve that?
body: <p>I am facing a big problem in firefox: the <strong>ALT GR</strong> key is disabled on some simple pages:
  (try to type in an email)</p>
  
  <p>This simple page DISABLES the <strong>ALT GR</strong> key</p>
  
  <pre><code>&lt;html&gt;
  &lt;body&gt;
  &lt;iframe src="http://www.dialogoo.com/vdialogoo.php?id=2" width="100%" height="100%"&gt;&lt;/iframe&gt;
  &lt;/body&gt;
  </code></pre>
  
  <p>but if you open 
  <a href="http://www.dialogoo.com/vdialogoo.php?id=2" rel="nofollow noreferrer">http://www.dialogoo.com/vdialogoo.php?id=2</a></p>
  
  <p><strong>ALT GR</strong> is working !</p>
  
  <p>This strange behaviour only happens on Firefox !
  It seems Firefox + Iframe + Flash = disable ALT GR key !</p>