Well.. it would seem that I have to revisit this. I created another DataAssist page, and the results page is doing the same thing. However, this time when I add the "overflow: hidden" attribute, it does nothing. I've tried entering it into the div before and after the table as well.. nothing.
So.. I recreated the pages again, from scratch.. deleting both the local and server side copies of the old pages. Same thing.
Suggestions?