var rotatedImage = document.getElementById("rotated");
var images = [
	"images/hapennybridgeday.jpg",
	"images/glasses.jpg",
	"images/hapennybridgenight.jpg",
	"images/handshake.jpg"
];
var imageCount = images.length - 1;
var currentImage = 0;
if (rotatedImage) {
	setInterval(function () {
		currentImage = currentImage === imageCount ? 0 : currentImage + 1;
		rotatedImage.src = images[currentImage];
	}, 5000);
}