Another question about animated gifs

Can any fellow web developers help me?

I am trying to build a site where each page will expand to fit the browser window, and so far, so good. The problem is that I have included some very simple animated gives in the left navigation as mouse-overs(less ugly than it sounds). The gifs are set to run continuously, but the freeze as soon as the browser window size has been reset.

Anyone know why this happens? Is there any way to get around it? Any input would be great.


“It says, I choo-choo-choose you. And it’s got a picture of a train.”
– Ralph Wiggum