Has anyone run into the problem where the button won't size properly in ie6 and the bottom borders are missing?

I've added a button to the right side of the titlepane widget and it works and looks great in FF and IE7 but in IE6 it overflows and pushing the wipe content over to the left doesn't size to 15x15 and the bottom border of every button in the page is missing... I've got lots of pages with buttons but this is the only one that is really hurting. Any ideas?