title: how to fire onchange event in chosen prototype javascript select box?
body: <p>I am using chosen prototype for select box. Now i want to fire onchange event on that select box.
  here is the link for <a href="http://julesjanssen.github.com/chosen/" rel="nofollow">chosen prototype</a></p>
  
  <p>How to do this. please help me.  </p>
  
  <pre><code>&lt;script type="text/javascript" src="/js/Event.simulate.js"&gt;&lt;/script&gt;
  &lt;script src="/js/prototype.js" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="/chosen/chosen.proto.js" type="text/javascript"&gt;&lt;/script&gt;
  
  
  &lt;div class="side-by-side clearfix" style="margin-bottom:14px;"&gt;
  
          &lt;select data-placeholder="Select Loacation"  class="chzn-select" tabindex="2" name="source"&gt;
            &lt;option value=""&gt;Select Loacation&lt;/option&gt;
            &lt;option value=""&gt;option1&lt;/option&gt;
            &lt;option value=""&gt;option2&lt;/option&gt;
          &lt;/select&gt;
    &lt;/div&gt;
  
  
  
  Event.observe($(".chzn-select"),'change', function(){
  
  //alert($(".chzn-select").chosen());
  
  })
  </code></pre>