Frame rate issues

Hi all just wondering if anyone has noticed this kind of problem before…my movie’s frame rate is 35 fps. I have a button which has an animated rollover. When I test the movie the animation plays way too slowly. But if I test the scene while editing the button the animation plays at the correct frame rate. A frame rate of 45fps fixes this though but that is too fast for most internet connections I would say…any thoughts on how to solve this problem?

cheers!