title: Access param in the callback of jQuery Nivo Slider plugin
body: <p>HI,</p>
  
  <p>I'm using the Nivo Slider, a jQuery plugin allowing to create slideshow. He's perfect but I've just a little problem. Each pictures have an id (or another element like rel for example) and I would like to give this parameter in the callback function of Nivo (beforeChange: function(){}).</p>
  
  <p>But the problem, in this beforeChange callback I cannot receive any param so I don't know witch image is changed.</p>
  
  <p>Thanks !    </p>