function mbetaal(extra) {
	lp = (screen.width) ? (screen.width-400)/2 : 0;
	tp = (screen.height) ? (screen.height-300)/2 : 0;
	var popup = eval('window.open("/mollie.php?partnerid=11775&"+extra,"popup","scrollbars=no,width=400,height=305,menubar=no,status=yes,toolbar=no,copyhistory=no,top="+tp+",left="+lp+",location=no,directories=no,resizable=no")');

	if (popup.focus) { popup.focus(); }
}