title: update background-image with jquery?
body: <p>my div has a background image.</p>
  
  <p>the user can rotate it on the server side (not everyone has CSS3), and it saves with the same filename.jpg.  is there any way to refresh it in the browser?</p>
  
  <p>this doesn't seem to work:</p>
  
  <pre><code>d = new Date();
  $('#photo').css('background-image',"url('images/"+filename+".jpg?'+d.getTime())");
  </code></pre>