rem: updateStyleSheetForCalendar(aCalendar); 
add: if (!gCachedStyleSheet) { gCachedStyleSheet = getStyleSheet("chrome: } updateStyleSheetForObject(aCalendar, gCachedStyleSheet); 
context:     onCalendarPrefSet: function(aCalendar, aName, aValue) {        updateStyleSheetForCalendar(aCalendar);    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/74efc308ff857d65952efad5a2bf55606fa82469/calendar-management.js/buggy/calendar/lightning/content/calendar-management.js