It’s a custom theme, but the header and footer forks are included.
I’m trying the real thickbox script, not the wordpress plugin. It has worked on a 2.3.3 site, but not on a 2.5 site. Weird.
I’m also trying to use the IDTabs (https://www.sunsean.com/idTabs/). Same deal. Works on 2.3.3, but doesn’t on 2.5.