jQuery.extend(DateInput.DEFAULT_OPTS, {
    month_names: ["Januar", "Februar", "Marts", "April", "Maj", "Juni", "Juli", "August", "September", "Oktober", "November", "December"],
    short_month_names: ["Jan", "Feb", "Mar", "Apr", "Maj", "Jun", "Jul", "Aug", "Sep", "Okt", "Nov", "Dec"],
    short_day_names: ["Sø", "Ma", "Ti", "On", "To", "Fr", "Lø"],

    stringToDate: function (string) {
        var matches;
        if (matches = string.match(/^(\d{2,2})-(\d{2,2})-(\d{4,4})$/)) {
            return new Date(matches[3], matches[2] - 1, matches[1]);
        } else {
            return null;
        };
    },

    dateToString: function (date) {
        var month = (date.getMonth() + 1).toString();
        var dom = date.getDate().toString();
        if (month.length == 1) month = "0" + month;
        if (dom.length == 1) dom = "0" + dom;
        return dom + "-" + month + "-" + date.getFullYear();
    }
});