title: Hide incorrect days in droplist calendar
body: <p>I'm quite new to web development and though I know I can use those calendar datepickers to input dates to a a form. I was wondering how can I hide or disable incorrect days from <code>day-month-year</code> droplists, like <code>30 february</code> or <code>31 april</code>. Is there a non obscure way to do that using javascript or jquery?
  I'm thinking on this kind of datepicker.
  See <a href="http://jsfiddle.net/2z4qxfph/" rel="nofollow">jsfiddle</a> </p>