Water Effect

I would like to make something like this cool water effect.

http://www.med.com.gr/24k/

Is this just as3?
I have made various gradients and moved them around the background mc, but they get distorted when the swf is resized.

The as3 for resizing the background could be to blame.

file
http://www.mediafire.com/?mmymhyiiztx

Thanks