eyeofmidas.com/htdocs/js/simplecarousel.js

(function(document) {
document.addEventListener("DOMContentLoaded", function(event) {	
	var carouselButtons = document.getElementsByClassName("image-carousel");
	for(var i = 0, button = carouselButtons[i]; button = carouselButtons[i]; i++) {
		//button.addEventListener("click", cycleImages);
		button.addEventListener("click", cycleVideos);
	}
});

function cycleImages(event) {
	var parent = event.currentTarget.parentNode;
	var images = parent.getElementsByTagName('img');
	var button = parent.getElementsByTagName('button')[0];
	var firstImage = images[0];
	firstImage.style.display = "none";
	var nextImage = images[1];
	nextImage.style.display = "inline-block";
	parent.insertBefore(firstImage, button);
}

function cycleVideos(event) {
	var parent = event.currentTarget.parentNode;
	var videos = parent.getElementsByTagName('video');
	var button = parent.getElementsByTagName('button')[0];
	var firstVideo = videos[0];
	firstVideo.style.display = "none";
	var nextVideo = videos[1];
	nextVideo.style.display = "inline-block";
	parent.insertBefore(firstVideo, button);
}
})(document);