jQuery unique elements
<p><a href="http://api.jquery.com/jQuery.unique/" rel="nofollow">http://api.jquery.com/jQuery.unique/</a> lets you get only unique elements. Is there I can find out if an element is already in the list or not.</p>

<pre><code>list = $('#container p a');

elem = $('#container div a:first');
</code></pre>

<p>Is there a way to find out if elem is already in the list or not. </p>
