fields_to_be_validated = new Array( 'bill_first_name', 'bill_last_name', 'bill_phone', 'bill_address_one', 'bill_city', 'bill_postal_code');

fields_to_be_validated.each(function(field_id) {
	var foo = new LiveValidation(field_id, { validMessage: "Ok" });
	foo.add( Validate.Presence, { failureMessage: "Ce champ est obligatoire" } );
	}
)

var email = new LiveValidation('email', { validMessage: "Ok" });
email.add( Validate.Email, { failureMessage: "Le courriel doit être valide" } );
email.add( Validate.Presence, { failureMessage: "Ce champ est obligatoire" } );