if (self.location.toString().indexOf("http://www.mingpaogroup.com") >= 0)
  self.location.replace(self.location.toString().replace("http://www.mingpaogroup.com","http://www.mediachinesegroup.com"));
else if (self.location.toString().indexOf("http://mingpaogroup.com") >= 0)
  self.location.replace(self.location.toString().replace("http://mingpaogroup.com","http://www.mediachinesegroup.com"));