rem: pbi.addObserver("calendar", this, false); 
add: pbi.addObserver("calendar.", this, false); 
context: function calendarPrefObserver( CalendarPreferences ){   this.CalendarPreferences = CalendarPreferences;   try {     var pbi = rootPrefNode.QueryInterface(Components.interfaces.nsIPrefBranchInternal);     pbi.addObserver("calendar", this, false);     window.addEventListener("unload", this, false);  } catch(ex) {    dump("Calendar: Failed to observe prefs: " + ex + "\n");  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/4a0067a694d084344ce7f207b6a5e25d43d6df96/rootCalendarPref.js/clean/calendar/resources/content/pref/rootCalendarPref.js