// ----------------------------------------------------------
 public String newerSubmitTimeSpanClass() {
   if (aNewerSubmission.isLate()) {
     return "warn sm";
   } else {
     return "sm";
   }
 }
 // ----------------------------------------------------------
 public String submitTimeSpanClass() {
   if (aSubmission.isLate()) {
     return "warn";
   } else {
     return null;
   }
 }