anchor.diff:  		fromBody = message.body;
   		fromId = message.id;
   		fromCurrants = message.currants;
  +		currants_taken = message.currants_taken;
   		if(fromCurrants > 0) {
  -			if (message.currants_taken) {
  +			// currants sent with message
  +			if (currants_taken) {
  +				// server knows currants are already taken
   				currantDisplay.classes.add('taken');
   				currants_taken = true;
   			} else {
  +				// not yet taken
   				currants_taken = false;
   				currantDisplay.classes.remove('taken');
  +				// take currants on click
   				currantDisplay.onClick.first.then((_) async {
   					await postRequest(serverAddress + '/collectCurrants', encode(message), encode:false);
   					currantDisplay.classes.add('taken');
   					currants_taken = true;
   				});
   			}
  +			// taken or not
   			currantDisplay.querySelector('#fromCurrantsNum').text = commaFormatter.format(fromCurrants).toString();
   			currantDisplay.hidden = false;
   		} else {
  +			// no currants sent with message
   			currantDisplay.hidden = true;
   		}
   
  
positive.code: 	}
  
  	read(Event event, var detail, Element target) async {
  		selected = "read";
  		int id = int.parse(target.attributes['data-message-id']);
  		Mail message = messages.singleWhere((Mail m) => m.id == id);
  
negative.code: 		Mail message = new Mail();
  		message.to_user = toField;
  		message.from_user = window.sessionStorage['playerName'];
  		if (message.body != null) {
  			message.body = toBody;
  		} else {
  			message.body = "";
  		}
  		message.subject = toSubject;
  		message.currants = toCurrants;
  
  