code: function(postmessage) {
  			var b = gui.Broadcast.parse(postmessage);
  			if(b.$contextids.indexOf(gui.$contextid) === -1) {
  				gui.Broadcast._dispatch(b);
  			}
  		}
docs: Privileged static ....................................................... 
  Parse postmessage into broadcast in this window?
  Broadcasts propagate over-agressively, so perhaps
  the broadcast has already bypassed this context.
  @param {string} postmessage