Works well for me, change the url http://www.google.com/calendar/event to http://www.google.com/calendar/hosted/(domain)/... to allow me to use it for Google Apps. Thanks for the script.

I found this script rather hit and miss. Sometimes it would do what it was made to do; sometimes it would return an error message. Recently it has stopped working at all; the link no longer appears on the page. A pity because if it worked I would use it A LOT.