Your not going to be able to count on this looking right in all browsers though. The <FORM> tag be default takes up a certain amount of space before and after. You can change the spacing though through CSS and then you can count on how it will look in the browsers.
Just add this to the <FORM> tag:
style="margin-top: 0; margin-bottom: 0"
so that is looks like this:
Code:
<form style="margin-top: 0; margin-bottom: 0" method=...........
[/code]