Mass speed movement

i’m kind of newbie here, need some help on mass speed movement like in this intro site…
http://www.dreamshocker.com/oldsite/dshockv2/indexaf.hhttp://www.dreamshocker.com/oldsite/dshockv2/indexaf.html

how to control the multiple clip mass speed movement…using actionscript

any help would be grateful…

thnx in advance…