Validation.addAllThese([
    ['validate-cemail', 'Please make sure your emails match.', function(v) {
                var conf = $('emailconfirmation') ? $('emailconfirmation') : $$('.validate-cemail')[0];
                var email = false;
                if ($('email')) {
                    email = $('email');
                }
                var emailElements = $$('.validate-email');
                for (var i = 0; i < emailElements.size(); i++) {
                    var emailElement = emailElements[i];
                    if (emailElement.up('form').id == conf.up('form').id) {
                        email = emailElement;
                    }
                }
                return (email.value == conf.value);
            }]
]);