How do you write a custom jquery selector for all not shown fields excluding hidden fields
<p>I want to write a custom selector to select all fields that are returned by the :hidden selector except for the fields that are of type hidden.   </p>

<p>Here's what I have.  It's breaking the page with no console error.</p>

<pre><code>$.extend($.expr[':'], {
notShown: $(':hidden').not("hidden")
});
</code></pre>
