Month validation

[ambasador]

Can anyone help me with this why is always giving me false

   $.payment.validateCardMonthExpiry = function(month) {
   var currentTime, expiry, _ref;

    if (typeof month === 'object' && 'month' in month) {
        _ref = month, month = _ref.month;
    }
    if (!month) {
        return false;
    }
    month = $.trim(month);

    if (!/^\d+$/.test(month)) {
        return false;
    }
    if (!(parseInt(month, 10) <= 12)) {
        return false;
    }
   expiry = new Date(month);
   currentTime = new Date;
   expiry.setMonth(expiry.getMonth() - 1);
   expiry.setMonth(expiry.getMonth() + 1, 1);
   return expiry > currentTime;

};

and when i validate this like that

if (!$.payment.validateCardMonthExpiry($('#month-holder').val())) {
        $('#month-error').fadeIn('slow');

    } else {
        $('#month-error').fadeOut('slow');
    }

[jamesreggio]

Sorry, $.payment.validateCardMonthExpiry is not a feature of jquery.payment.