autoscroll.js

// Let the page load completely
// Open the console (in Chrome or similar do View > Developer > JavaScript Console)
// paste the following code

let scrollingInterval;
function scrolling(pixels) {
	if (pixels == 'stop' || pixels == 0) {
		clearInterval(scrollingInterval);
		return;	
	}
	if (!pixels) {
		pixels = 1;
	}
	clearInterval(scrollingInterval);
	scrollingInterval = setInterval(function(){
	window.scrollBy(0,pixels);
	}, 1);
}

// use it this way (don't paste the following)

// scrolling(1) //the number roughtly indicates the speed

// scrolling('stop') // this stops the automatic scrolling to occur