AS instead of motion tweens

Ok… I’m just curious here…
in my homepage www.punktkom.com I’ve made “screens” that when you click on one it changes the y-coordinate of itself and the (in some cases) other screens. It’s not good-looking at all, since there’s no “flow” in the movement…

So, I thougt about making motion tweens for each “screen”, but that would be a lot of motiontweens and a lot of frames used… :frowning:

Therefore I wonder if there’s any AS-code that could make them “float” ?

Or maybe a tutorial?