- $this->add('textarea', "old[$instance]", NULL, array('rows' => 1, 'cols' => 40));
- $this->add('textarea', "new[$instance]", NULL, array('rows' => 1, 'cols' => 40));
+ $this->add('text', "old[$instance]", NULL);
+ $this->add('text', "new[$instance]", NULL);