Script Summary: Turn off Facebook Chat and use FBOnlineNow to see who's online (active or idle friends).
Version: 0.2.3
It works after you install the facebook application "Online Now" (http://apps.facebook.com/invisible/ ).
Modified version of
http://userscripts.org/scripts/show/36083
http://userscripts.org/scripts/show/19450
http://userscripts.org/scripts/show/23499
