I don't have 8 with me now, but is it possible that the size of the td is cutting it off?
Set a border or bg colour on that td, do the same (but different colour) for the center tag, and so on and see if they are both at least as big as they need to be to show the image.
Then click on the image url in those browsers: will they show it on itself (they should)?
Best I can think of for now. Beyond that I'd start suspecting either some crazy table bug or some crazy Joomla! bug.