Action script animation

Hi all
JUst wondered if someone could start me off on the right foot here?
Im trying to develop some kind of nice linear animation that is kinda random but nice and organic in shape or just linear. Ok that doesnt make much sense

The outcome should be somewhere close to this :

http://www.crimsonmade.com/

Any ideas would be gratefully recieved

Cheers

J. :slight_smile: