How do I link popups to individual gallery images?

Hi,

I have a gallery made in Spirit and a popup sample in Popup Pro (David Bradely). I want the click on the gallery image to open the corresponding popup for that performer, rather than just the image itself. See attached image. I know that I would use the CSS selector option, but I'm not sure what that would be and how to make it happen. Can you help me out with that?

You have access to my site.

Thanks!

Terry