Scripted x eller y akse rotation

how ?
jeg fandt et script men det er ikke den vej jeg vil have det )rotationen skal være horisontal:

onClipEvent (load) {
    var bln
    intRotationSpeed = Math.round(20 * Math.random())-10;
    blnCalcNewSpeed = true;
}
onClipEvent (enterFrame) {
    if (blnCalcNewSpeed) {
        intNewRotationSpeed = Math.round(20 * Math.random())-10;
        blnCalcNewSpeed = false;
    }
    intRandom = Math.round(10 * Math.random());
    if (intRandom == 1 && intNewRotationSpeed == intRotationSpeed) {
        blnCalcNewSpeed = true;
    }
    if (intRotationSpeed > intNewRotationSpeed) {
        intRotationSpeed--;
    } else {
        intRotationSpeed++;
    }
    this._rotation += intRotationSpeed;
}