public string saveTrialBlock(TrialBlockData results)
 {
     DataAccessor database = new DataAccessor();
     results.parseStrings();
     bool complete = database.recordTrialBlock(results);
     if (complete) return "You have now completed the study.  Thank you for participating.";
     bool? offerAnother = database.allowTrial(database.getUserByID(results.userID));
     if (offerAnother == null) return "You have now completed the study.  Thank you for participating.";
     else if (offerAnother == true) return "Your results have been recorded.  Please participate again today. <INPUT TYPE=\"button\" onClick=\"history.go(0)\" VALUE=\"Go again now.\">";
     return "Thank you for your continuing participation.  That will be all for today.";
 }