$form->applyFilter('__ALL__', 'htmlentities');

$form->addRule('company_name',    $label->getRequiredLabel('company_name'),    'required');
$form->addRule('company_address', $label->getRequiredLabel('company_address'), 'required');
$form->addRule('city',            $label->getRequiredLabel('city'),            'required');
$form->addRule('Telephone',       $label->getRequiredLabel('Telephone'),       'required');
$form->addRule('email',           $label->getRequiredLabel('email'),           'required');
$form->addRule('name_order',      $label->getRequiredLabel('name_order'),      'required');
$form->addRule('to_company',      $label->getRequiredLabel('to_company'),      'required');
$form->addRule('to_address',      $label->getRequiredLabel('to_address'),      'required');
$form->addRule('to_city',         $label->getRequiredLabel('to_city'),         'required');
$form->addRule('to_telephone',    $label->getRequiredLabel('to_telephone'),    'required');
$form->addRule('timenow',         $label->getRequiredLabel('timenow'),         'required');