function getValue($filtered = true)
 {
     $value = parent::getValue($filtered);
     if (!$value) {
         return $this->current_filename;
     }
     return $value;
 }
 function getValue($filtered = true)
 {
     $value = parent::getValue($filtered);
     $this->_saved_thumbs = call_user_func_array(array(&$this, 'createThumbs'), $this->_thumbs_target);
     return $value;
 }