ecco il codice, spero possa servire a qualcosa!
Ciaooooo

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CODICE PULSANTE “indietro”
---------------------------------------
on (rollOver) {
tellTarget ("/upaction") {
gotoAndPlay("up");
}
}
on (rollOut) {
tellTarget ("/upaction") {
gotoAndStop("stop");
}
}

---------------------------------------------
CODICE PULSANTE “avanti”
-------------------------------------------
on (rollOver) {
tellTarget ("/scroll") {
play();
}
}
on (rollOut) {
tellTarget ("/scroll") {
stop();
}
}

--------------------------------------------
CODICE MOVIECLIP “upaction”
-------------------------------------------
tellTarget ("/scroll") {
prevFrame();
}
gotoAndPlay("up");