ActionScript 3.0 :: Resizing Movieclip Inside Movieclip?

I have two movieclips, one loads an image, I resize that mc and add it in a bigger movieclip which has to be resized too. My problem is that that the inner movieclip doesn't resize the way I want. I've also taken into account something that I read that an empty mc resizes strangely but it didn't change anything.

that's the code:

loader_mc.x=0;
loader_mc.y=0;
cont_mc.x=1440;
cont_mc.y=0;

[code]...

the size of the outer is right 1440x1000 but the sizes of the inner are not right it should be about one third of the outer but it's about two thirds. about same with the height.

All I want is to be able to resize them independenlty. with the outter beeing bigger than the inner. Or to be exact I want the the inner to fit exactly the height or the width of the outer depending on which site of the inner is bigger( for example if the inner's width is bigger than its height then the inner width gets as big as the outer's width and then inner's height gets resized according to its ratio) and furthermore to center it in the middle of the outer.