Crossfade movies in QuickTime Player

Do you think it is possible to have two movies running at the same time in QuickTime Player full screen mode? And crossfade one into the other by changing the opacity?
I want to present one movie and then fade directly into a second movie without leaving the full screen mode.
Any ideas?

-Rainer

Model: MacBook
Browser: Safari 419.3
Operating System: Mac OS X (10.4)

You can do some pretty tricky thing with SHIL in Quicktime

Check out these 40 examples from Apple

Look at the slideshow example

Have Fun

Moving to OS X…