I also wonder if it would be possible to make an action hook available to hook into the footer area of the popup below the image. Right now there are plenty of ways to customize the footer info (caption, etc.). However I think it’d be nice to also be able to display some custom stuff.
Sorry I had to remove the content, but I did test it on localhost and it works fine now. Thank you!
Thank you for looking into this.
Here is a test page: http://wpb.e-webstyle.com/tests
The Album 1 is of a facebook page managed by me.
The Album 2 below is of facebook, which I do not manage. 😉
This might have to do with image sizes (when facebook adds that extra string). I am not sure.