That would be my first guess too.
My second guess would be that in this case the form does not appear inside
a table cell but elsewhere. Then it has both a top margin and a bottom
margin by default, as you can see if you view a page containing
For some odd reason, popular browsers by default suppress the top margin
but not the bottom margin.
Yucca, http://www.cs.tut.fi/~jkorpela /
Pages about Web authoring: http://www.cs.tut.fi/~jkorpela/www.html