public function to_string()
 {
     $params = array_merge($this->_params, array());
     $params['width'] = $this->get_width();
     $params['height'] = $this->get_height();
     $params['type'] = 'application/x-java-applet';
     $attrs_html = self::_get_attr_html($params);
     $html = "<{$this->_tagname}{$attrs_html}>";
     $html .= '<param name="code" value=' . HTMLHelper::quote($this->get_code_class()) . ' />';
     //		$jar_url = String::put_sufix($this->get_jar_url(), '.jar', false).'?i=';
     $jar_url = $this->get_jar_url() . '?i=';
     if (!ZPHP::get_is_production()) {
         $jar_url .= uniqid();
     } else {
         $jar_url .= ZPHP::get_app_version();
     }
     $html .= '<param name="archive" value=' . HTMLHelper::quote($jar_url) . ' />';
     foreach ($this->_args->to_array() as $key => $value) {
         $html .= '<param name=' . HTMLHelper::quote($key) . ' value=' . HTMLHelper::quote($value) . ' />';
     }
     $html .= $this->get_error_string();
     $html .= "</{$this->_tagname}>";
     return $html;
 }