Script to bookmark all of Safari's tabs

I know there are various plugins, addons, widgets and thingamabobs that will allow Safari to bookmark a group of tabs you have open. If you haven't installed any of these extras or you're just an applescript fan at heart, I found a one-trick script over at ScriptBuilders that should pull this trick off just fine. However, I haven't tested this yet, and the script's page doesn't state whether its compatible with Tiger and/or Panther, so if you try it out, please post your thoughts.