How in the hell did they do that!

Please have a look at this site. Anyone knows a script that is like or close to this???

http://www.imaginationatwork.com/Imagine?_nolivecache&aDrawingID=20030306_133543132_597486376&_lscid=73636210

Thanks

Sawy

For starters…

http://www.kirupa.com/developer/actionscript/drawingboard.htm