form-validation depending on a checkbox

[eluser]Haloperidol[/eluser]
then maybe

Code:

if (isset($this->input->post('checkbox_name')) && $this->input->post('checkbox_name') == 'on')
   {
      if ($this->form_validation->run('validation_if_checkbox_is_off') == FALSE || $this->form_validation->run('rest_of_validation_if_checkbox_is_on') == FALSE)
      {
         ...
      }
   } else {
      if ($this->form_validation->run('validation_if_checkbox_is_off') == FALSE)
      {
         ...
      }
   }

?