var aktiv = null;
var scrolling = false;

function getDisplay() {
	if (document.all) {
		return document.all.display;
	}
	else {
		return document.getElementById('display');
	}
}	

function getButton() {
	if (document.all) {
		return document.button;
	}
	else {
		return document.getElementById('button');
	}
}

function rechts() {
	var d = null;
	var y = 0;
	
	window.clearInterval(aktiv);
	d = getDisplay();
 	y = d.scrollLeft;
 	y += 350;
 	d.scrollLeft = y;
 	stop();
} 
function links() {
	var d = null;
	var y = 0;
	
	window.clearInterval(aktiv);
	d = getDisplay();
 	y = d.scrollLeft;
 	y -= 350;
 	d.scrollLeft = y;
 	stop();
} 


function scrollIt() {
	var d = null;
	var y = 0;
	
	d = getDisplay();
	y = d.scrollLeft + 5;
	d.scrollLeft = y;
}

function setButtonImage(url) {
	var b = getButton();
	b.src = url;
}

function start() {
	scrolling = true;
	aktiv = window.setInterval("scrollIt()",100);
	setButtonImage('/graphics/stop.gif');
}

function stop() {
	scrolling = false;
	window.clearInterval(aktiv);
	setButtonImage('/graphics/play.gif');
}

function move() {
	if (scrolling) stop();
	else start();
}