FullCalendar: Localizing column headers

HTML

<link rel="stylesheet" href="http://arshaw.com/js/fullcalendar-1.5.3/fullcalendar/fullcalendar.css">
<script src="http://www.arshaw.com/js/fullcalendar-1.5.3/fullcalendar/fullcalendar.min.js"></script>
<div style="border:solid 2px red;">
        <div id='calendar'></div>
</div>

JavaScript

$(document).ready(function() {

    var date = new Date();
    var d = date.getDate();
    var m = date.getMonth();
    var y = date.getFullYear();

    var events_array = [
        {
        title: 'Test1',
        start: new Date(2012, 8, 20)},
    {
        title: 'Test2',
        start: new Date(2012, 8, 21)}
    ];

    $('#calendar').fullCalendar({
        header: {
            left: 'prev,next today',
            center: 'title',
            right: 'month,agendaWeek,agendaDay'
        },
        defaultView: 'agendaWeek',
        columnFormat: 'ddd d/M',
        events: events_array
    });
});