PGUP (Key.PGUP プロパティ)

var keyListener: Object = new Object();
keyListener.onKeyDown = function() {
    if (Key.isDown(Key.PGDN)) {
    car_mc._rotation += 5;
    } else if (Key.isDown(Key.PGUP)) {
    car_mc._rotation -= 5;
    }
};
Key.addListener(keyListener);