Script Summary: Resizes images which exceed the page width in VBulletin forums.
When images are posted in a vB forum thread which exceed the page width, the layout can get pretty messed up. This script sets a maximum width on the images. The images are shown in their original size when you click on them.
This is adapted from a script by Grauw. (If you click the "homepage" link on the right, you'll be taken to his userscripts.org page.)