var imageIndex = 0;
var imageArray = new Array();

function addImage(src, title) {
	var img = imageArray[imageArray.length] = new Image();
	if (src) {
		img.src = src;
		img.title = title || "";
	} else {
		var e = window.document.getElementById("Image1");
		img.src = e.src;
		img.title = e.title;
	}
}

function showImage(delta) {
	var e = window.document.getElementById("Image1");
	imageIndex += delta;
	if (imageIndex >= imageArray.length) imageIndex = 0;
	if (imageIndex < 0) imageIndex = imageArray.length - 1;
	var img = imageArray[imageIndex];
	// if (img.title) e.title = img.title;
	e.width = img.width;
	e.height = img.height;
	e.src = img.src;
}