
PASS cancelBubble must be false when an event is initially created. 
PASS Initializing an event must set cancelBubble to false. 
PASS stopPropagation() must set cancelBubble to true. 
PASS stopImmediatePropagation() must set cancelBubble to true. 
PASS Event.cancelBubble=false must have no effect. 
PASS Event.cancelBubble=false must have no effect during event propagation. 
PASS cancelBubble must be false after an event has been dispatched. 
PASS Event.cancelBubble=true must set the stop propagation flag.