Code for random avatars?

Is there a coding for avatars that change each time you refresh? Or is it just enabled for admins only?

There are two ways I can think of: the admins can place PHP commands in their avatar fields to randomly select an image.

Alternatively, you can host it yourself, and place an image on it named "mfggavatar.omgwtflol" and when a connection is made to this file, it randomly selects another image to replace it with.

it's a PHP script masquerading as an image that must be hosted elsewhere. Not only that, it must be on a host that supports PHP and .htaccess type handler overrides.

Which I could never get to work ;_;

or you could just collect all of your avatars that you have an then make a slideshow using imageready.

... no, that's not what he means