title: how to change attribute "hidden" in jquery
body: <pre><code>&lt;td&gt;
  &lt;input id="check" type="checkbox" name="del_attachment_id[]" value="&lt;?php echo $attachment['link'];?&gt;"&gt;
  &lt;/td&gt;
  
  &lt;td id="delete" hidden="true"&gt;
  the file will be deleted from the newsletter
  &lt;/td&gt;
  </code></pre>
  
  <p>I want to know how can i change the attribute "hidden" to false in Jquery when the checkbox is checked or not checked.</p>