Best results in other decks

...fieldset->addField('toefl_pbt', 'text', [ 'name' => 'toefl_pbt', 'label' => Mage::helper('course')->__('TOEFL PBT'), 'class' =>'validate-number-range number-range-310-677', 'note' => Mage::helper('course')->__('Lowest TOEFL PBT score...

...addField('contact_email', 'text', array( 'name' => 'contact_email', 'label' => Mage::helper('swms')->__('Contact Email'), 'class' => 'validate-email' )); $fieldset->addField('nec', 'text', array( 'name' => 'nec', 'label' => Mage::helper('course')->__('NEC'),

...s the list of classes available to add to your field elements: required (not blank) validate-number (a valid number) validate-digits (digits only) validate-alpha (letters only) validate-alphanum...

...only letters and numbers) validate-date (a valid date value) validate-email (a valid email address) validate-url (a valid URL) validate-date-au (a date formatted as; dd/mm/yyyy)