function stopScroll(id) {
	var div = document.getElementById(id);
	clearTimeout(div.scrolltimer);
}

function startScroll(id, speed, vert) {							
	var div = document.getElementById(id);
	var actual = 0;
	var max = 0;
	if (vert == 0) {
		div.scrollLeft += speed;
		actual = div.scrollLeft;
		max = div.scrollWidth - div.offsetWidth;
	} else {
		div.scrollTop += speed;
		actual = div.scrollTop;
		max = div.scrollHeight - div.offsetHeight;
	}
	if (actual == max || actual < 1) {
		speed = speed * -1;
	};
	var t=setTimeout("startScroll('" + id + "'," + speed + "," + vert +")",100);
	div.scrolltimer = t;
}