To anyone who might know what's going on:
Yesterday, my chessboard started flashing at me. The mouse-over of
the chessboard ordinarily makes the square under the cursor change
to a different color, but now, whenever that square changes, it causes
the whole chessboard to be redrawn suddenly, and it appears to
flash. I'm using IE 6.0 under Win98, and never had a problem before
yesterday. Any suggestions?