function showpicture(url, width, height) {
	width = width + 20;
	height = height + 20;
	popupwindow = window.open("/mod/picture/" + url, "picture", "width=" + width + ",height=" + height + ", fullscreen=0, toolbar=0, location=0, directories=0, status=0, menubar=0, scrollbars=0, resizable=0");
	popupwindow.moveTo(5, 5);

}