evt->mLoadGroup->RemoveRequest(evt, nsnull, NS_OK);
HandleImagePLEvent(PLEvent* aEvent){  ImageEvent* evt = NS_STATIC_CAST(ImageEvent*, aEvent);  nsEventStatus estatus = nsEventStatus_eIgnore;  PRUint32 eventMsg;  if (evt->mMessage.EqualsLiteral("load")) {    eventMsg = NS_IMAGE_LOAD;  } else {    eventMsg = NS_IMAGE_ERROR;  }  nsEvent event(PR_TRUE, eventMsg);  evt->mContent->HandleDOMEvent(evt->mPresContext, &event, nsnull,                                NS_EVENT_FLAG_INIT, &estatus);  evt->mLoadGroup->RemoveRequest(evt, nsnull, NS_OK);  return nsnull;}