I need a french calendar and I can't understand the problem. I guess i'm not using the regional options like it should be. But... Here is my code : $(function() { $('#Date').datepicker({ showMonthAfterYear: false, showOn: 'both', buttonImage: 'media/img/calendar.png', buttonImageOnly: true, dateFormat:'d MM, y' }, $.datepicker.regional['fr'] ); });