Click on the thumbnails to view the full page. Back up and select another one from this page. If the images get smaller after you open them, you'll need to turn off Automatic Browser Resizing in your Browser Configuration. In Internet Explorer, click on Tools|Internet Options|Advanced| and scroll down to MultiMedia. Then Uncheck "Enable Automatic Image Resizing" and click on "OK".
I'm working on getting it so you can go from page to page without the Back button.