Give it some CSS3 love too: get rid of that body background image and use box-shadow, also, download button is trivial to implement in CSS and will degrade gracefully.
Can't we come up with a nice way to get people to move to modern browsers? IE6 and IE7 should both fall below 10% this year. With a little prodding IE9 could become the least supported browser within a year, and IE9 is going to be a pretty good browser.
