Someplace I saw that it was done with javascript. One form box had the image's name, and two other form boxes had the height and width detected by javascript. I think it was some kind of upload script. Can't find it - don't remember, nor can I find it specifically doing a search term. <-- too many unrelated results.
Does anyone know how I could do this without yet another insufferable scripting ordeal? It's been a long weekend already :(
I'll see if I can trace the history and find them.