var old = 0;
function changeImage () {
	do {
		num = Math.ceil(Math.random()*12);
	}
	while (old == num);
	old = num;
	var url = 'http://buffalowellfest.com/img/'+num+'.jpg';
	var newImage = new Image();
	newImage.onload = (function() {
		$('rotate').setProperty('src',url);
		changeImage.delay(5000,this);
	}).bind(this);
	newImage.src = url;
}

Window.onDomReady(function() {
		changeImage();
	});