rem: return aObject instanceof Components.interfaces.oeIICalEvent; 
add: return (aObject instanceof Components.interfaces.oeIICalEvent) && !(aObject instanceof Components.interfaces.oeIICalTodo); 
context: function isEvent ( aObject ){   return aObject instanceof Components.interfaces.oeIICalEvent;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d1547f1bc4b4ca00d034a2f99d0fda7436932254/calendar.js/clean/calendar/resources/content/calendar.js