add:  return null; 
context: function getStyleSheet(aStyleSheetPath) {    for each (var sheet in document.styleSheets) {        if (sheet.href == aStyleSheetPath) {            return sheet;        }    }}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8395/40eb684fdf02cdbc137acc170135496d8d078734/calendar-views.js/clean/calendar/base/content/calendar-views.js