dhtmlxCalendarLangModules = new Array();//create array if it doesn't exist  
        //define settings for the new language (Spanish)
        dhtmlxCalendarLangModules['es'] = {
            langname: 'es', // id of the new language
            dateformat: '%Y-%m-%d', // date format
            monthesFNames: ["Enero", "Febrero", "Marzo", "Abril", "Mayo", "Junio", "Julio", "Agosto", "Septiembre", "Octubre", "Noviembre", "Diciembre"], 
            monthesSNames: ["Ene", "Feb", "Mar", "Abr", "May", "Jun", "Jul", "Ago", "Sep", "Oct", "Nov", "Dic"], 
            daysFNames: ["Domingo","Lunes", "Martes", "Miércoles", "Jueves", "Viernes", "Sabado"], 
            daysSNames: ["Do","Lu", "Ma", "Mi", "Ju", "Vi", "Sa"], // short names of days
            weekend: [0, 6], // weekend days
            weekstart: 1, // week start day
            msgClose: "Cerrar", // close button tooltip
            msgMinimize: "Minimizar", // minimize button tooltip
            msgToday: "Hoy" // today button tooltip
        };
        //define settings for the new language (German)
        dhtmlxCalendarLangModules['de'] = {
            langname: 'de',
            dateformat: '%d.%m.%Y',
            monthesFNames: ["Januar", "Februar", "März", "April", "Mai", "Juni", "Juli", "August", "September", "Oktober", "November", "Dezember"],
            monthesSNames: ["Jan", "Feb", "Mär", "Apr", "Mai", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dez"],
            daysFNames: ["Sonntag", "Montag", "Dienstag", "Mittwoch", "Donnerstag", "Freitag", "Samstag"],
            daysSNames: ["So", "Mn", "Dn", "Mt", "Dn", "Fr", "Sa"],
            weekend: [0, 6],
            weekstart: 1,
            msgClose: "Schließen",
            msgMinimize: "Drehen",
            msgToday: "Heute"
        };