title: jquery file upload - IE done callback data.result issue
body: <p>I'm using <code>jQuery</code> file <a href="https://github.com/blueimp/jQuery-File-Upload">upload plugin</a>.</p>
  
  <p>I don't use the <code>UI</code> part, only basic one.</p>
  
  <p>When I do the following, I'm having an issue in <code>IE</code>:</p>
  
  <pre><code>$('input#fileupload').fileupload({
      url: '/upload',
      done: function (e, data) {
      if(data.result != null &amp;&amp; $.trim(data.result) != '')
          $('a#attachment').html(data.result);
      }
      //......................
  </code></pre>
  
  <p>on <code>IE</code> the <code>data.result</code> is an <code>Object</code> (<code>IE9</code> at least, not sure the others...)</p>
  
  <p>On <code>Chrome</code>/<code>Firefox</code> is just the response <code>Text</code> (simple plain text from the server).</p>
  
  <p>Ideas?</p>