In Full page mode, movie controller hides when I drag the knob if movie is playing. When the scroller thumb captures mouse events, RenderMedia should not treat the event as a real mouseOut.
Here's an example to test with: http://pulsar.esm.psu.edu/Faculty/Gray/graphics/movies/iMac2Go.mov
Created attachment 27583 [details] patch
Committed revision 40885.