title: Jquery Checkbox change event not firing
body: <p>Am trying to sortout this small issue from past hour :</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
  $(document).ready(function(){        
      $("input[name='isClubMember']:checkbox").mousedown(function() {
           if (!$(this).is(':checked')) {
              this.checked = confirm("Are you sure?");
              $(this).trigger("change");
           }
      });
   });
  &lt;/script&gt;
  </code></pre>
  
  <p>Funnily this works in JSFiddle ..but not in my jsp page.
  <a href="http://jsfiddle.net/JXbYt/" rel="nofollow">Sample</a></p>
  
  <p>The above code gives me <code>null</code> error at this line (in Debug console)</p>
  
  <pre><code> $("input[name='isClubMember']:checkbox").mousedown(function() {
  </code></pre>
  
  <p>JQ -Ver : 1.7.2 Browser : IE8</p>
  
  <p><strong>Update</strong> :
     Error in IE console :</p>
  
  <pre><code> 'null' is null or not an object 
  </code></pre>
  
  <p>at the above mentioned line</p>