rem: var formattedInterval = gCalendarWindow.dateFormater.formatInterval( start, end, isAllDay, relativeToDate); boxAppendLabeledText(box, labelProperty, formattedInterval); 
add: var dateFormatter = Components.classes["@mozilla.org/calendar/datetime-formatter;1"] .getService(Components.interfaces.calIDateTimeFormatter); var startString = new Object(); var endString = new Object(); start = jsDateToDateTime(start).getInTimezone(calendarDefaultTimezone()); end = jsDateToDateTime(end).getInTimezone(calendarDefaultTimezone()); dateFormatter.formatInterval(start, end, startString, endString); boxAppendLabeledText(box, labelProperty, startString.value + ' - ' + endString.value); 
context: function boxAppendLabeledDateTimeInterval(box, labelProperty, start, end, isAllDay, relativeToDate){  var formattedInterval = gCalendarWindow.dateFormater.formatInterval( start, end, isAllDay, relativeToDate);  boxAppendLabeledText(box, labelProperty, formattedInterval);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/5f4aa827a380b6cdb60e6a7629473af080742dea/mouseoverPreviews.js/clean/calendar/resources/content/mouseoverPreviews.js