Somewhat fixable (this is for moon.html):

            var n = 0;

            function loop() {
                location.hash = f[Math.floor((Date.now()/100)%f.length)];
                if (n++ > f.length) {
                    n = 0;
                    window.history.go(-f.length);
                }
                setTimeout(loop, 50);
            }

This actually doesn't work properly and jumps back too far sometimes because the URLs move with time and not a counter, but you get the idea.