Great that you sussed it and fixed that mate.
I'd be interested in improvements too, if there's a way to make this quicker. As using this does take up some speed, especially if you use it on other images ( logos for example ), and bitmap scrollers. Some people call this image strips. I had a look on the net, but it only had stuff for an inbuilt command in C++.
Cheers and dont give up dude,
Clyde.