title: Mousewheel will only zoom out
body: <p>I have a bug using the <a href="http://brandonaaron.net/code/mousewheel/docs" rel="nofollow">jquery.mousewheel plugin</a> where it will not recognize when I spin the wheel up.  For example I try this : </p>
  
  <pre><code>jQuery(function($) {
      $('#header')
          .bind('mousewheel', function(event, delta) {
             var dir = delta &gt; 0 ? 'Up' : 'Down';
             console.log (dir);
             return false;
          });
  });
  </code></pre>
  
  <p>I only get Down no matter which way I spin the wheel.  What could be causing this bug?  Anyone else encountered this? Any ideas where I could start looking or other code I could paste in to help debug.  </p>
  
  <p>I am using jQuery 1.7.1</p>