imgleft = 0;
imgright = 0;

function left() {
	imgleft = 1;
	var el = document.getElementById("pics"),
	st = el.scrollLeft;
	go();

	function go() {
		st = st - 10;
		if(imgleft) {
			if(st > -1) {
				el.scrollLeft = st;
				setTimeout(go, 50);
			}
			else el.scrollLeft = 0;
		}
	}
}

function right() {
	imgright = 1;
	var el = document.getElementById("pics"),
	st = el.scrollLeft;
	go();

	function go() {
		st = st + 10;
		if(imgright) {
			if(st < 2001) {
				el.scrollLeft = st;
				setTimeout(go, 50);
			}
			else el.scrollLeft = 2000;
		}
	}
}