title: jquery bind keyup to body in firefox
body: <p>i m binding keyup function in jquery to body which works in every browser
  except firefox</p>
  
  <p>the code: -</p>
  
  <pre><code> $('body').bind('keyup', function(e) {
      //alert ( e.which );
      alert('testing');
  
  });
  </code></pre>
  
  <p>how do i do it for firefox. it does not responds at all</p>
  
  <p>thanks</p>