Verify.add_filter('alpha', 'Only alphabetical characters (a-Z) can be entered in \'{$desc}\'.', '^[a-zA-Z]+');
Verify.add_filter('email', 'A valid e-mail address needs to be entered in \'{$desc}\'.', '^[a-zA-Z0-9\\-\\_\\.\\~\\+]+\\@[a-zA-Z0-9\\-\\.]+\\.[a-zA-Z]{2,6}$');
Verify.add_filter('not_empty', 'You did not fill in required field \'{$desc}\'.', '[^ \\t\\r\\n]+');
Verify.add_filter('numeric', 'A number needs to be entered in field \'{$desc}\'.', '^\\d+$');
Verify.add_filter('not_same', 'Fields \'{$desc}\' and \'{$desc_same}\' need to have the same values filled in.');
Verify.add_filter('postcode', 'In het veld \'{$desc}\' moet een geldige postcode worden ingevuld.', '^[0-9]{4}\\s?[a-zA-Z]{2}$');
Verify.set_suffix_message('Please try again.');