lightbox2 display option

When the user selects the lightbox2 display option, you need to remove the "thickbox" class from the anchor link. At present the html generated is:

<a class="thickbox" rel="lightbox" title="Taken with: " href="/sites/d6.stellapower.net/files/fast_gallery/Blue hills.jpg"><img src="http://d6.stellapower.net/sites/d6.stellapower.net/files/imagecache/preview/fast_gallery/Blue hills.jpg" alt="" title=""  class="imagecache imagecache-preview" /></a>

It needs to be:

<a class="thickbox" rel="lightbox" title="Taken with: " href="/sites/d6.stellapower.net/files/fast_gallery/Blue hills.jpg"><img src="http://d6.stellapower.net/sites/d6.stellapower.net/files/imagecache/preview/fast_gallery/Blue hills.jpg" alt="" title=""  class="imagecache imagecache-preview" /></a>

Leaving the thickbox class there causes both lightbox and thickbox are triggered.

Cheers,
Stella