var cal = new CalendarPopup("CAL1");
cal.showNavigationDropdowns();
cal.setCssPrefix("CAL");
cal.setMonthNames('Januar','Februar','März','April','Mai','Juni','Juli','August','September','Oktober','November','Dezember');
cal.setDayHeaders('S','M','D','M','D','F','S');
cal.setWeekStartDay(1);
cal.setTodayText("Heute");