rem: var dayBoxItem = event.currentTarget;  if ( dayBoxItem.dayNumber != null ) 
add: if ( event.currentTarget.dayNumber != null ) 
context: MonthView.prototype.doubleClickDay = function monthView_doubleClickDay( event ){   if( event.button > 0 )      return;      var dayBoxItem = event.currentTarget;   if ( dayBoxItem.dayNumber != null )    {      // change the selected date and redraw it      var startDate = this.getNewEventDate();            newEvent( startDate, false );   }   else   {      newEvent( dayBoxItem.date, false );   }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/3a33ed5d8b1859d8a6029a28ef0b6e8fa76ffdb4/monthView.js/buggy/calendar/resources/content/monthView.js