Creating link from thumbnail image to .swf file

I’m updating someone else’s flash website, and I’ve only used flash so far for very simple animations. This site has a main page, which has other .swf files linked to it that appear as different navigation menus. I have to add a photo gallery, and I can’t get the thumbnail photo links to open the .swf files I have created for each large photo. The large photos should appear next to the thumbnails but they won’t. Any ideas?
Here’s a link to the site itself so you can see what I’m talking about. The thumbnail links are not uploaded at present.