BEGIN:VCALENDAR
VERSION:2.0
BEGIN:VEVENT
URL:http://www.stc.org/mystc/events/viewevent/233-test?groupid=115 
DTSTART:20120521T210000
DTEND:20120521T210000
SUMMARY:test
DESCRIPTION:For details, click here: http://www.stc.org/mystc/events/viewevent/233-test?groupid=115
LOCATION:anywhere
END:VEVENT
END:VCALENDAR