function launchValidationNewsletter() { var isFormValid = true;
    function validateEMAIL() {
        var isControlValid = true;
        if (isControlValid) {
            isControlValid = validateRequired("newsletterContainer_EMAIL","newsletter_control_EMAIL") && isControlValid;
        } if (isControlValid) {
            isControlValid = validateEmail("newsletterContainer_EMAIL","newsletter_control_EMAIL") && isControlValid;
        }
        return isControlValid;
    } isFormValid = validateEMAIL() && isFormValid;
    function validateCOLUMN1() { var isControlValid = true;
        if (isControlValid) {  isControlValid = validateRequired("newsletterContainer_COLUMN1","newsletter_control_COLUMN1") && isControlValid;
        } if (isControlValid) {  isControlValid = validateRegEx("newsletterContainer_COLUMN1","newsletter_control_COLUMN1","web.form.alphabetical.characters.only",/^$|^[a-zA-Z]*$/) && isControlValid;
        } return isControlValid;
    } isFormValid = validateCOLUMN1() && isFormValid;
    function validateCOLUMN3() { var isControlValid = true;
        if (isControlValid) {  isControlValid = validateRequired("newsletterContainer_COLUMN3","newsletter_control_COLUMN3") && isControlValid;
        } return isControlValid;
    } isFormValid = validateCOLUMN3() && isFormValid;
    function validateCOLUMN2() { var isControlValid = true;
        if (isControlValid) {  isControlValid = validateRequired("newsletterContainer_COLUMN2","newsletter_control_COLUMN2") && isControlValid;
        } return isControlValid;
    } isFormValid = validateCOLUMN2() && isFormValid;
    function validate() { var isControlValid = true;
        return isControlValid;
    } isFormValid = validate() && isFormValid;
    return isFormValid;
}