(function($) {


    var selDate;

    $.fn.monthPicker = function(callback, selectedDate) {

        selDate = selectedDate;

        var elm = this;

        this.html("<span class=\"prevMonthButton\"><a href=\"\">&lt;</a></span><span class=\"prevMonth\"><a href=\"\"></a></span><span class=\"curMonth\"></span><span class=\"nextMonth\"><a href=\"\"></a></span><span class=\"nextMonthButton\"><a href=\"\">&gt;</a></span>");

        populateDates(this);

        var prevMonthFunc = function() {

            var month = selDate.getMonth() - 1;
            if (month < 0) {
                month = 11;
                selDate.setFullYear(selDate.getFullYear() - 1);
            }
            selDate.setMonth(month);

            populateDates(elm);
            callback(selDate.getFullYear(), selDate.getMonth() + 1);
            return false;
        }
        var nextMonthFunc = function() {
            var month = selDate.getMonth() + 1;
            if (month > 11) {
                month = 0;
                selDate.setFullYear(selDate.getFullYear() + 1);
            }
            selDate.setMonth(month);

            populateDates(elm);
            callback(selDate.getFullYear(), selDate.getMonth() + 1);
            return false;
        };

        this.find(".prevMonth > a").click(prevMonthFunc);
        this.find(".prevMonthButton > a").click(prevMonthFunc);
        this.find(".nextMonth > a").click(nextMonthFunc);
        this.find(".nextMonthButton > a").click(nextMonthFunc);
    }

    function populateDates(elm) {

        var months = jQuery.datepicker._defaults.monthNames;
        var selYear = selDate.getFullYear();
        var selMonth = selDate.getMonth();


        elm.find(".curMonth").text(months[selMonth] + " " + selYear);

        var prevMonth = selMonth - 1;
        var prevYear = selYear;
        if (prevMonth < 0) {
            prevMonth = 11;
            prevYear = prevYear - 1;
        }

        elm.find(".prevMonth > a").text(months[prevMonth] + " " + prevYear);

        var nextMonth = selMonth + 1;
        var nextYear = selYear;
        if (nextMonth > 11) {
            nextMonth = 0;
            nextYear = nextYear + 1;
        }

        elm.find(".nextMonth > a").text(months[nextMonth] + " " + nextYear);
    }
})(jQuery);