function convert()
 {
     $args = func_get_args();
     $options = $this->conf_options;
     $options = sonots::parse_options($args, $options);
     // check_options
     if ($options['limit'] === "0") {
         $options['limit'] = NULL;
     }
     if ($options['cloud'] === 'off' || $options['cloud'] === 'false') {
         $options['cloud'] = FALSE;
     }
     //print_r($options);
     $plugin_tag = new PluginSonotsTag();
     if ($options['cloud']) {
         $html = $plugin_tag->display_tagcloud($options['limit'], $options['related']);
     } else {
         $html = $plugin_tag->display_taglist($options['limit'], $options['related']);
     }
     return $html;
 }