$(function() {
    $('.datepicker').datepicker({
        changeMonth: true,
        changeYear: true,
        showButtonPanel: true,
        dateFormat: 'mm/yy',
        onClose: function(dateText, inst) {
            var month = $("#ui-datepicker-div .ui-datepicker-month :selected").val();
            var year = $("#ui-datepicker-div .ui-datepicker-year :selected").val();
            $(this).datepicker('setDate', new Date(year, month, 1));
        },
        beforeShow: function(input, inst) {
            if ((datestr = $(this).val()).length > 0) {
                year = datestr.substring(datestr.length - 4, datestr.length);
                //month = jQuery.inArray(datestr.substring(0, datestr.length - 5), $(this).datepicker('option', 'monthNames'));
                month = datestr.substring(0, datestr.length - 5);
                $(this).datepicker('option', 'defaultDate', new Date(year, month-1, 1));
                $(this).datepicker('setDate', new Date(year, month-1, 1));
            }
        }
    });
    $("#datepicker").mousedown(function() {
        $('#ui-datepicker-div').toggle();
    });
});

$("#datepicker").mousedown(function() {
    $('#ui-datepicker-div').toggle();
});