Javascript plugin to manage placeholder
<p>Look at the Twitter sign up page at <a href="https://twitter.com/signup" rel="nofollow">https://twitter.com/signup</a></p>

<p>Even when you click on first input field "Full name" placeholder stays there until I start typing something. That is awesome.</p>

<p>Does anyone know of a good jQuery plugin that comes close to that?</p>
