$(document).ready(function() {
	$("form").validate({
        invalidHandler: function(form, validator) {
          var errors = validator.numberOfInvalids();
          if (errors) {
            var message = errors == 1
              ? 'You missed 1 field. It has been highlighted'
              : 'You missed ' + errors + ' fields. They have been highlighted';
            alert(message);
          }
        }
     });
});