function oeffnefenster (id) {    //Popup-Fenster Produktvergroesserung
	fenster=window.open("popup.php?id=" + id, "News", "width=420,height=510,left=300,top=100,status=no,scrollbars=yes,resizable=no,toolbar=no");
 	fenster.focus();
 	 if(fenster) return false;
 	else return true;
}