[mythtv] OSD fademovement not working properly.

[ben]

When I use a negative direction for the fademovement, the background
will not fade up.  The text and other container elements do fade in the
give direction, but background image always fades in a positive
direction.   I looked at the code last night, but couldn't find the
problem.  I thought someone who was actually a C++ person might have a
better chance at finding the problem.

Thanks
Ben