Firefox Issue with Open Poll with Results

I just wanted to let you know in Firefox 3, when you have a poll and you're viewing the results the "Older polls" button will push the header of the other item below it.
This works fine in Internet Explorer, just in Firefox it has an issue. I didn't change anything significant in your template but the graphics, which wouldn't of caused this.

You can see an example at http://www.studiohits.com/, you'll have to create an account then vote in the poll to see what I mean.

Thanks!

Chris