Keep a flash site in % Scale when dragging window larger

Hey all…second time posting here.

Im designing a site where I want 2 sections to keep their proper spacing on the far left & right, as well as in the middle.

Check out this site:

This is basically what i’m going for…can anyone point me in the right direction to some coding to use to do this effect on teh site? It reminds me of table-use in plain html, but I dont know how to do this in Flash.

Thanks for the help you can offer.