Scrollingwindow other fx?

I read the tutorial on scrolling window (great!!!), I was wondering if I could enter coordinates that would cause it to also move in an up and down direction? The tutorial offers:
on (press) {
_root.xnew = _root.mask2._x+(-1.5-1)*100/2;
To help set the coordinates of the left right movements (changes per inv. button)
I know that there is action script with a: ._y option, can this be used, or what would you do in this case?