I do not know if this is the correct place to ask this but i am in need of an image dropdown to enable users to visually select images from a dropdown and see the image preview in the actual dropdown itself.

I need something like this http://www.jameslinden.com/2006/04/

this does not seem to work as my icons are 64 x 64 pixels and therefore i cannot figure out how to customise this,..

Any help would be great