You can play with image sizes in html
At least, I think I caught Tom doing this on the space board a while back...
From memory it's something like:-
http://www.imagehosting.us.com/image.php?id=27167&h=525765" width="800" height="538">
http://www.imagehosting.us.com/image.php?id=27167&h=525765" width="400" height="269">
etc...
