public function renderValue()
 {
     $hf = new HTML_Element_Input_Hidden('', $this->name, 0, '');
     $html = $hf->render();
     $html .= parent::renderValue();
     return $html;
 }
 public function __construct($label, $name, $value, $checked)
 {
     parent::__construct($label, $name, $value);
     if ($checked) {
         $this->params['checked'] = 'checked';
     }
 }
 public function __construct($label, $name, $value, $size = 30, $desc = '')
 {
     parent::__construct($label, $name, $value, $desc);
     $this->params['size'] = $size;
 }