[orca-list] Clickable thumbnails are sometimes invisible to orce

[Lorenzo Taylor <daxlinux gmail com>]

http://drop.io/LiftEveryVoice
Recent orca from svn, more recent than latest release but not updated in the 
last about 3 days, firefox 3.0 and Ubuntu 9.04 beta.

There is a clickable thumbnail for a downloadable version of the video shown in 
the frame above it. Orca picks up the image that shows that it's a movie, but 
not the thumbnail. On another OS with another free screen reader and the same 
browser, the thumbnail is visible to the screen reader under the movie image as 
a "clickable graphic". Is there a way to make this visible to orca so that the 
video file can be downloaded without having to switch to "system view"?

Thanks,
Lorenzo