Mouse_OVER scaleX scaleY

I am trying to create a Japanese map where on mouse over prefectures (states) would zoom in by some 1.2.
If I make every prefecture_mc as a separate layer, then they scale on under another which, my friends is not good looking behaviour :).
when I create all 47 prefectures within one layer, then prefecture_mc:scaleY=1.2; is ignored.
It was simple in AS2… besides it was scaling from the center :frowning:
May I hope for some help out here?

thank you in advance.