title: issue with jquery delegate and change event
body: <p>I'd like to use the delegate function with my file change event but I'm not having any luck.  Here is what I'm trying to do:</p>
  
  <pre><code>$("#file").delegate("change", function() {    
      $("#submit_form").trigger('click');
  });
  </code></pre>
  
  <p>My change event isn't getting called...am I missing something or can I not use delegate with a change event?</p>