eto taka mojesh da go napravish:
menuto koeto iskash da scrolva mu pishesh slednite object actions:

onClipEvent (load) {
this.xInit = this._x;
}
onClipEvent (enterFrame) {
var xDist = this._x - _root._xmouse;
var xIncr = xDist/15;
if (this._x + xIncr < this.xInit + this._width/2 && this._x + xIncr > this.xInit - this._width/2) {
if (Math.abs(xDist) > 10 ) {
this._x += xIncr;
}
}

}

taka menuto shte scrollva ot ediniq krai do drugiq; ako iskash da loopva ve4e e po slojno.
15 e skorosta (obratno proporcionalno) a 10 e minimalnata razlica neobhodima za da zapo4ne scroll.