Started with a static one Gallery6, now disabled. Experimented with different styles, and still doing so. Some slides auto changed others needed arrows clicking. Gallery3 and Gallery 4 are temporary empty. The others use arrows or better still the keyboard arrows. The latest is Gallery 5, with some linked temporary ones. All are shown as sub-menus.
Some of these galleries use CSS, which may be a problem for anyone using the Microsoft Explorer browser. According to the internet it is very buggy in this area. Recommended that you use a browser such as Pale Moon, Cometbird, Firefox, Opera, Chrome, Midori or one of the many others available.