When viewing individual pictures,
-- Use "previous|next" to see additional pictures; to return to the small pictures, click on one of the headings at the top-left corner of the screen.
-- To view a slide show of these pictures, click on "slideshow" at the top-right corner of the screen; to return, click on "thumbnails" at the top-right corner of the screen.
-- To return to the first screen, click on "all galleries" in the top-left corner of the screen.

To return, press your web browser's Back (left) arrow.