Index: lams_central/web/includes/javascript/addLesson.js
===================================================================
diff -u -red4bd34c133be8f3b24a6a6ac13e197659666dae -r5cf28b5fbc194ed54b04fe73e52e47bede16376b
--- lams_central/web/includes/javascript/addLesson.js	(.../addLesson.js)	(revision ed4bd34c133be8f3b24a6a6ac13e197659666dae)
+++ lams_central/web/includes/javascript/addLesson.js	(.../addLesson.js)	(revision 5cf28b5fbc194ed54b04fe73e52e47bede16376b)
@@ -376,8 +376,7 @@
 		// create user DIVs
 		$.each(users, function(index, userJSON) {
 			$('#' + containerId).append($('<div />').attr({
-											'userId'  : userJSON.userID,
-											'sortKey' : userJSON.lastName+userJSON.firstName
+											'userId'  : userJSON.userID
 											})
 					                      .addClass('draggableUser')
             						      .text(userJSON.firstName + ' ' + userJSON.lastName 
@@ -423,8 +422,8 @@
 		users.each(function(){
 			$(this).detach();
 		}).sort(function(a, b){
-			var keyA = $(a).attr('sortKey');
-			var keyB = $(b).attr('sortKey');
+			var keyA = $(a).text().toLowerCase();
+			var keyB = $(b).text().toLowerCase();
 			var result = keyA > keyB ? 1 : keyA < keyB ? -1 : 0;
 			return sortOrderAsc ? -result : result;
 		}).each(function(){