plugin to indicate a form element value has been changed
<p>A date selection HTML form section contains two drop downs - one for the day of the month, the other for the month.</p>

<p>When selecting an invalid date such as 31st February, the day value is automatically updated to be valid (29th in the case of this form).</p>

<p>I would like to unobtrusively highlight this automatic change to the user with a JQuery effect  - for example, bu modifying the border of the updated element somehow, temporarily.</p>

<p>Does anyone know of any JQuery plugins that could help here?</p>
