rem: this.mObservers = this.mObservers.filter( function (v) { return v != aObserver; } ); 
add: cals.forEach(function (c) { if (mgr.getCalendarPref(c, this.mActivePref)) this.addCalendar(c); if (mgr.getCalendarPref(c, this.mDefaultPref)) this.setDefaultCalendar(c, false); }, this); 
context:         this.mObservers = this.mObservers.filter( function (v) { return v != aObserver; } );
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d6e237b0527dc05617b105e02622de60d4cdf92c/calCompositeCalendar.js/clean/calendar/providers/composite/calCompositeCalendar.js