function pop(name, path, width, height) {
	var win = window.open(path, name, "width=" + width + ",height=" + height + ",directories=no,location=no,menubar=no,resizable=no,scrollbars=no,status=no,toolbar=no") ;
	win.moveTo(
		(screen.width - width) / 2
		, (screen.height - height) / 2)
	return win 
}