jQuery sticky top menu bar request
<p>Im looking for a jQuery pluging (or code/guide) that does this: <a href="http://codecanyon.net/item/jquery-css3-sticky-mega-menu-bar/full_screen_preview/239093" rel="nofollow">http://codecanyon.net/item/jquery-css3-sticky-mega-menu-bar/full_screen_preview/239093</a></p>

<p>This one is not free</p>

<p>Note: Notice the navigation bar is not placed at the top from the beginning. It sticks once the viewport "hits" it.</p>
