Display Week Numbers in GCal Without Extensions

Firefox users who have installed Lifehacker’s own Better GCal Firefox extension already have an option to display week numbers in Google Calendar, but users of other browsers (and those who stay away from the Greasemonkey scripting engine) can still get discrete weekly labels. Stefan Sundin’s ReCover site offers two calendar subscriptions, for Sunday or Monday week starts, that get the job done. Thanks, Magnus!