function showImage(imageSrc,imgAlt, width, height)
{
		// Construct the url to open.
		var url = "/images/screenshots/viewer.aspx?src=" + imageSrc;
		url += "&width=" + width;
		url += "&height=" + height;
		url += "&alt=" + imgAlt;
		
		var sw = screen.width - 40;
		var sh = screen.height - 100;
		
		// Open the url in the _screenshot named window.
		window.open(url, "_screenshot", "left=20,top=20,width=" + sw + ",height=" + sh + ",resizable=yes,scrollbars=yes,status=no,titlebar=no,toolbar=no");
	
	return false;
}