PHP Photo Album script mod to add image link

[rapdigital]

1) Script Title: PHP Photo Album script

2) Script URL (on DD): http://www.dynamicdrive.com/dynamici...photoalbum.htm

3) Describe problem: I'm trying to add another image size so that the gallery has thumbnail size dir, med size dir, and Hi res tiff dir. I'd like the med to be displayed as a pop up window with a text link to the Hi Res version under the image. Hope this makes sense. Thanks in advance

[rapdigital]

Anyone have any ideas on this?