Rolla makes automatically a crossfading image rollover only with a link.
Example: (with default options here)
$.rollaHover({ imgDir: 'images', onFade: 'fast', outFade: 'fast', mainOpacity: "1", css: 'rolla' });
HTML From:
<a href="http://jquery.com/" class="rolla">jquery</a>
To:
<a href="http://jquery.com"><img src="images/jquery.jpg" alt="jquery" title="jquery" class="rolla"></a>
Fade:
<a href="http://jquery.com"><img src="images/jquery-on.jpg#hover" alt="jquery" title="jquery" class="rolla"></a>
