During the time I have spent on these boards, I have had several personal avatars. Well, in order to make sure all artists get represented fairly, I would ideally like to have one of those avatars that change images every time the page is refreshed. Problem: I have no idea how. Can someone please help me out here?

Also, I want to make sure that this is ok with the artists in question before I do anyhitng with their work.

Artists
Veera, my first and also an early Veeratar.
The Losar
Abbounpronouncable is on hiatus, so I can only assume that he will not mind.
Gorbash Kazdar: I requested an avatar from him last week or so and the idea came to me this morning.