// JavaScript Document
var x = 1;

function start() {
	document.getElementById('play').value = 'true';
	document.getElementById('pause').innerHTML = 'Pause Image';
	changeImage();
}

function changeImage() {
	document.getElementById('imageRight').style.backgroundPosition = '-'+x+'px 0px';
	if(document.getElementById('play').value == 'true') { x=x+1; }
	t=setTimeout("changeImage()",12);
}

function play() {
	if(document.getElementById('play').value == 'true') {
		document.getElementById('play').value = 'false';
		document.getElementById('pause').innerHTML = 'Resume Image';
	} else {
		document.getElementById('play').value = 'true';
		document.getElementById('pause').innerHTML = 'Pause Image';
	}
}