function showPage(url, width, height) {
	width += 20;
	height += 27;
	var left = Math.round((screen.width - width) / 2);
	var top = Math.round((screen.height - height) / 2 - 20);
	var imageWin = window.open(url, "_blank", "width=" + width + ", height=" + height + ", toolbar=no, menubar=no, location=no, scrollbars=no, status=no, resizable=no, titlebar=no, directories=no, left=" + left + ", top=" + top + ", screenX=" + left + ", screenY=" + top);
}