Ok, here's a very kludgy version of what I want...
Go to this thread:
http://www.railroadforums.com/forum/...read.php?t=178
Note the "View this page with full size images" link at the top of the thread. Click that, and you see the same thread, with full size images.
Here's what I did. Created a new version of showthread. Hacked the code a bit to trick it into thinking there were no thumbnails.
Changed the template postbit_attachment to be the same as postbit_attachmentimage. I'm not sure why I had to do that, and I don't know if the change will break anything else. I'd prefer to do it the right way, but I couldn't figure out how to make it display the images inline...
I'd also like to hack it so the next page links work, now they just go to the regular showthread link and also I'd like to remove all reply/edit/quickreply links too, all I want folks to be able to do in this window is to view the thread, that way they always default to thumbnails.
OK, that's the idea, anyone interested in making it better?