title: jquery 1.8.2 enable/disable submit button based on checkbox status
body: <p>I was able to get this working using jquery 1.6, but I upgraded to 1.8 and can't get it to work.  Here's the jfiddle: <a href="http://jsfiddle.net/3aFaA/" rel="nofollow">link</a></p>
  
  <p>and the code:</p>
  
  <p>HTML:</p>
  
  <pre><code> &lt;form id="ad_form" method="post" action=""&gt;
      &lt;input type="checkbox" id="tosId" name="tos_name" style="padding:0; margin:0" &gt;&lt;/input&gt;       
      &lt;br /&gt;
      &lt;input type="submit" id="submitId" name="submit_name" value="Submit"  /&gt;&lt;/input&gt;
   &lt;/form&gt;​
  </code></pre>
  
  <p>jQuery:</p>
  
  <pre><code> $('#submitId').attr('disabled', 'disabled');  
  
   function updateFormEnabled() 
       {
           if($('#tosId').prop('checked'))
           {
               $('#submitId').attr('disabled', '');
           } 
           else 
           {
               $('#submitId').attr('disabled', 'disabled');
           }
       }
  
   $('#tosId').change(updateFormEnabled);​
  </code></pre>