Given a date (m/d/yyyy) determine if its "the third tuesday" of the month etc
<p>After several searches, I haven't been able to find what I'm looking for. Im using <code>jquery datepicker</code> to return a date string that looks like <code>Day, Month Date, YYYY</code>, and I am looking for a library or some method that will take that and turn it into 
<code>the second Tuesday of the month</code>, or <code>the fourth Thursday of the month</code>. So far it seems like jquery's <code>prettyDate</code> and <code>EasyDate</code> dont have the functionality I'm looking for, and I would love to avoid doing this by hand!</p>

<p>Thanks,
Alex</p>
