Mouse: You can use the mouse wheel to scroll through the gallery, click on a distant image to bring it to the front, click on the arrows in the slide bar or click and drag the marker in the slide bar. Click on the central image to open the viewer.
Keyboard: You can use the left or right arrow keys to move the gallery. The Return (Enter) key will open and close the image viewer.
Image Viewer: You can use the mouse wheel to scroll through the images in the viewer, or use the left or right arrow keys. The Return (Enter) key will close the viewer. You can also use the navigation links at the top of the viewer.