Hmm yes - depends on the browser too.. IE will usually DWYM (which is not always good, as it sometimes fails, and often promotes laziness), while NN is very stubborn about doing exactly what you said (mostly making things too large), whereas Opera is very stubborn about doing what it wants (and ends up making things too small). What
work is if you have a single row at the top, with a single cell, set to 100%, containg a single-pixel transparent GIF. The other solution may be to try doing what you want using CSS (which is often a godsend).