Hi,
yes the problem was that the panels were not set to invisible thus they were waiting at the screen.
I reworked the whole stuff and wrote a little Frogger like game myself (not perfect though).
You can read about it here:
http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Number=253996#Post253996

Or download directly from here:
http://home.arcor.de/xarthor/downloads/Frogger.zip

Hope this helps you!
Have fun

best regards
xarthor