| PASS When an event is created, returnValue should be initialized to true. | |
| PASS preventDefault() should not change returnValue if cancelable is false. | |
| PASS returnValue=false should have no effect if cancelable is false. | |
| PASS preventDefault() should change returnValue if cancelable is true. | |
| PASS returnValue should change returnValue if cancelable is true. | |
| PASS initEvent should unset returnValue. | |
| PASS returnValue=true should have no effect once the canceled flag was set. | |