function preloadImages(images) {
	if (document.images) {
		for (i = 0; i < arguments.length; i++) {
			var newImage = new Image();
			newImage.src = arguments[i];
		}
	}
}

function changeImage(link, id, img, revertAfter) {
	var revert = (revertAfter != false) ? true : false;
	
	if (revert) {
		var currentImage = document.images[id].src;
		
		link.onmouseout = function() {
			document.images[id].src = currentImage;
		};
		
		link.onclick = function() {
			document.images[id].src = currentImage;
		}
	}
	
	document.images[id].src = img;
}