$(function() {
            var form = $('#register-or-login');
            form.validate({
                messages: {
                    _password: "",
                    _username: ""
                }
            });
            $('[data-handler="clientHandler"]').on('click', function () {


                var passwordInput = $('#_password');

                if ($(this).val() == 0) {
                    passwordInput.attr('disabled', 'disabled');
                    passwordInput.removeClass('error');
                    form.attr('action', $(this).data('form-url'));
                } else {
                    passwordInput.removeAttr('disabled');
                    form.attr('action', $(this).data('form-url'));
                }
            });
        });