$("#eventscalendar").wijevcal( { dataStorage: { addEvent: function(obj, successCallback, errorCallback) { }, updateEvent: function(obj, successCallback, errorCallback) { }, deleteEvent: function(obj, successCallback, errorCallback) { }, loadEvents: function(visibleCalendars, successCallback, errorCallback) { }, addCalendar: function(obj, successCallback, errorCallback) { }, updateCalendar: function(obj, successCallback, errorCallback) { }, deleteCalendar: function(obj, successCallback, errorCallback) { }, loadCalendars: function(successCallback, errorCallback) { } });