The best way to view these photographs is to use "Lightbox" view by clicking the boxed "L" next to the zoom out button.  Then simply use your arrow keys to move forward or back through the photographs.  Some photos may be longer than your screen, so use your scroll barn or your up and down arrow keys to see the entire photo. Also, it may be useful to use the Full Screen Mode of your browser by pressing the F11 key to see more of the photo.  When you are finished viewing, press "X" or "Esc".