Resizable Component that manages to keep its proportions

[Arne Broedel]

Hi Flex-Community,
I am skinning a Button with an icon. The Button should be sizable but keep
its proportions.
Its proportions width to height is 2 to 1. So every time the width is
changed the height shall change to width/2 and every time the height is
changed the width shall change to height*2.
Anyone can tell me a proper solution.
Thans