title: Change background color of div when checkbox is clicked
body: <p>I have a form with several checkboxes, like this:</p>
  
  <pre><code>&lt;div&gt;&lt;input type='checkbox' name='groupid' value='1'&gt;1&lt;/div&gt;
  &lt;div&gt;&lt;input type='checkbox' name='groupid' value='2'&gt;2&lt;/div&gt;
  &lt;div&gt;&lt;input type='checkbox' name='groupid' value='3'&gt;3&lt;/div&gt;
  </code></pre>
  
  <p>What I'm trying to do is when the checkbox is checked, change the background color of the div, and when it's unchecked, remove the background color.  How can I do this using jquery?</p>
  
  <p>Thanks</p>