var speed = 0;
var timer;
var timeron;

function scroll() {
	var obj = document.getElementById("scrolling");

	if (obj != null) {
		obj.scrollTop += (speed * 3);
	}
}

function cSpeed(s) {
	if (timeron) {
		timeron = false;
		clearInterval(timer);
	} else {
		if (s != 0) {
			timeron = true;
			speed = s;
			timer = setInterval("scroll()", 10);
			scroll();
		}
	}
}