UFO is something completely different - a mouse tracking demonstration using both graphical and text-based feedback to the user.
There is no obvious structure to this page - just browse around with your mouse cursor (hint: flashing blue icon, top left).
Watch the UFO and see how it accelerates and slows down, depending on proximity to the mouse, as you approach one of the hyperlinks. X,Y co-ordinates, time elapsed and ufo status are displayed.