rem: return (aObject instanceof Components.interfaces.oeIICalEvent) && !(aObject instanceof Components.interfaces.oeIICalTodo); 
add: return aObject instanceof Components.interfaces.calIEvent; 
context: function isEvent ( aObject ){   return (aObject instanceof Components.interfaces.oeIICalEvent) && !(aObject instanceof Components.interfaces.oeIICalTodo);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/e83fac781ea3f2e95dbfffb8513f48c3d509f9d7/calendar.js/buggy/calendar/resources/content/calendar.js