Is there a way to force onRollOver or onPress , etc?

ok so i have a few complex movie clips and in them is code for onRollOver, onRollOut, onPress, onRelease, bla bla bla

is there any way to “force” them to act like they are being rolledover or something without the user actually rolling over them?

ive tried buttonname.onRollOver(); and that doesnt work…