Click the thumbnail or the grey box around it. The page background changes to the selected tile and a single full-size tile is displayed in the box at the bottom.
JavaScript ON: Preview the image, then Right-click anywhere except the box and select 'Save Background As...'* OR right-click the full-size image at the bottom and select 'Save Picture As...'*
JavaScript OFF: Click the 'Open' link under the thumbnail to open a single full-size tile in a new window OR right-click the 'Open' link under the thumbnail and select 'Save Target
As...'*
* = menu described in Internet Explorer. Wording may vary in other browsers.
