protected void scrPsgTo_PassageChanged(ScrReference newReference)
{
Logger.WriteEvent(string.Format("New scrPsgTo reference is {0}", newReference.AsString));
ScrReference scRefFrom = scrPsgFrom.ScReference;
ScrReference scRefTo = scrPsgTo.ScReference;
if (scRefTo.Book < scRefFrom.Book)
scrPsgFrom.ScReference = scRefTo;
}