alpha problems in 2.49a

I have a wide plane with video on it
and in front of that a narrower plane with a still on it.
using ipo i want the front one to fade in and fade out
then the back one to fade in then out.
but see what happens
when the front one fades out so does that part of the back one!
is that how it is supposed to work?

here is a video of another version of the alpha problem

thanks all


videotest.blend (152 KB)

For the material of the small object, enable ZTransp.

at last! someone who knows!
thanks VERY much Crouch