var cal4 = new CalendarPopup("popupdate1"); 
cal4.setMonthNames('January','February','March','April','May','June','July','August','September','October','November','December');
cal4.setDayHeaders('S','M','T','W','T','F','S');
cal4.setWeekStartDay(1);
cal4.setTodayText("");
cal4.setCssPrefix("TEST");