Is there some way to use CSS to play a GIF once when moused over?
Not with the css we're limited to in posts. A gif doesn't have pause or play controls, unless you have browser plugins that make it possible. The closest you could come to doing it via css would be to hack it in with a :hover selector, which we unfortunately don't have access to in forum css :/
Originally Posted by Eros
Is there anyway to css an image map? I really want all the idvidiual parts of my signature to be links
You could crop your signature image into several individual images. That way you'd be able to apply a link to each image