I have this problem sometimes as well, to the best of my knowledge, no, there is no way around it.
It's just how the browser interprets your HTML, and that's that.
As a note, Opera and some other browsers don't do this, its mostly IE and Netscape.
One way you MIGHT be able to get around this is by just not closing your form tag, just don't put that ending </form> tag in at all. And if you do one of these:
<form method="post" action="whatever.php" />
Then it's still valid X/HTML as well. Just be careful if you have multiple forms on one page with these, it can botch things up if you dont' close your forms then.