I have this mod installed at http://www.encorebridal.com/store/

However, in Firefox, when you click on an additional image to have the larger image pop up, the window comes up the size of the thumbnail - it doesn't resize to show the entire larger image. I tried it using one image for all sizes, and one in the large folder and one thumbnail in the main images folder, with the same result.

Any ideas how to fix this?

Thanks!