var cal1 = new YAHOO.widget.Calendar("cal1", "cal1Container", 
    { LOCALE_WEEKDAYS:"short", START_WEEKDAY: 1, MULTI_SELECT: true });

cal1.cfg.setProperty("DATE_FIELD_DELIMITER", ".");
cal1.cfg.setProperty("MDY_DAY_POSITION", 1);
cal1.cfg.setProperty("MDY_MONTH_POSITION", 2);
cal1.cfg.setProperty("MDY_YEAR_POSITION", 3);

cal1.cfg.setProperty("MD_DAY_POSITION", 1);
cal1.cfg.setProperty("MD_MONTH_POSITION", 2);

cal1.cfg.setProperty("MONTHS_SHORT", ["Jan", "Feb", "M\u00E4r", "Apr", "Mai", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dez"]);
cal1.cfg.setProperty("MONTHS_LONG", ["Januar", "Februar", "M\u00E4rz", "April", "Mai", "Juni", "Juli", "August", "September", "Oktober", "November", "Dezember"]);
cal1.cfg.setProperty("WEEKDAYS_1CHAR", ["S", "M", "D", "M", "D", "F", "S"]);
cal1.cfg.setProperty("WEEKDAYS_SHORT", ["So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"]);
cal1.cfg.setProperty("WEEKDAYS_MEDIUM", ["Son", "Mon", "Die", "Mit", "Don", "Fre", "Sam"]);
cal1.cfg.setProperty("WEEKDAYS_LONG", ["Sonntag", "Montag", "Dienstag", "Mittwoch", "Donnerstag", "Freitag", "Samstag"]);