jQuery Scrollbar Plugin that shows bar and offers function only if there is an overflow
<p>I am looking for a small jQuery plugin, which shows a scrollbar next to a box with an overflow, something like this:</p>

<p><a href="http://baijs.nl/tinyscrollbar/" rel="nofollow">http://baijs.nl/tinyscrollbar/</a>
(1st example)</p>

<p>The Problem:
The scrollbar shall only be shown if there is a real overflow. If the content fits the parent, no scrollbar shall be shown. The jQuery Mousewheel Plugin should be supported, too. </p>

<p>Does somebody know a jQuery Scroll Plugin, which has this function? </p>
