rem: return aObject instanceof Components.interfaces.oeIICalTodo; 
add: return aObject instanceof Components.interfaces.calITodo; 
context: function isToDo ( aObject ){   return 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