Auto resizing images

I wonder if there’s a forum setting/plugin/addon that will force an image resize to stay within the width of the forum window.

I posted pics to the thread below:
http://audirevolution.net/forum/index.php?topic=2372.msg65347#msg65347

It’s kind of a drag to have a single horizontal scroll bar at the bottom (only really an issue on longer/pic heavy posts).

Just a thought.