To view these photos, Java needs to be enabled in your browser. The larger files are probably more suited to a broadband connection.
Once the file has loaded, use your mouse to scroll around the photo and the [UP] and [DOWN] arrows to zoom in and out.
Some of the photos have "hot spots". As your cursor passes over these, a brief description of that particular element will appear on the screen.
You can highlight these "hot spots" by toggling the [SPACEBAR].