Jquery Checkbox fade in fade-out is not working. but working in fiddle
<p>I tried a small code snippet to hide form div tag and fade in when a checkbox is clicked. </p>

<p>Please have a look at the code</p>

<pre><code>$('checkbox').change(function () {
    if ($('[id=vfb-i-would-like-samples-in-24-1]').attr("checked"))
    {
        alert("test");
        $('.vfb-timber-34').fadeIn();
        return;
    }
   $('.vfb-timber-34').fadeOut();
});
</code></pre>

<p>But When I use it in the live site its not working. Can someone help me. </p>

<p>Here is the fiddle url
<a href="http://jsfiddle.net/addyosmani/ND428/" rel="nofollow">http://jsfiddle.net/addyosmani/ND428/</a></p>

<p>Here is my site url 
<a href="http://conceptclick.webande-commercesolutions.com/?page_id=2238" rel="nofollow">http://conceptclick.webande-commercesolutions.com/?page_id=2238</a></p>

<p>When you go to "I would like samples in" on bottom. there is 3 check-boxes Timber Aluminum and Echo Panel.. When a person clicks Timber that div should fade in. </p>
