mulitple images randomly reload on same page

Hi there...

I have seen a lot of scripts allowing for a single image to change on a
page reload but I haven't found any explanations on a script that will
allow for mulitple images to randomly reload on a page refresh.

I'm working on a website for a client who wants the 4 logos of various
vendors at the bottom of the page to randomly reload when the page
reloads. Of course the logos have to be a graphic link to their
respective page AND there can't be duplicates of a logo on the page
(which can occur due to randomness).

Is it possible? Could some angelic soul please help me out or challenge
themselves with this one?

I appreciate your time.

Hanek