The script shows a full-screen master/detail interface, with the file listing on the left. The image viewer area has a black background for contrast. It will display the image file selected in the left-hand browser pane. After 15 seconds of idle time, the file list area will be hidden to allow more space for the image viewing area. Clicking on the image will toggle the size display from a "fit to window" mode into full-size 100% zoom mode. In full-size mode you can use the arrow keys to scroll around the image.