Index: lams_central/web/newLesson.jsp
===================================================================
RCS file: /usr/local/cvsroot/lams_central/web/Attic/newLesson.jsp,v
diff -u -r1.3 -r1.4
--- lams_central/web/newLesson.jsp	8 Jan 2013 11:19:31 -0000	1.3
+++ lams_central/web/newLesson.jsp	9 Jan 2013 15:18:37 -0000	1.4
@@ -104,21 +104,33 @@
 		<table id="classTable" class="tabTable">
 			<tr>
 				<td>
-					<div class="userContainerTitle"><fmt:message key="label.tab.class.monitors.unselected" /></div>
+					<div class="userContainerTitle">
+						<fmt:message key="label.tab.class.monitors.unselected" />
+						<span id="sort-unselected-monitors" class="sortUsersButton"/>▲</span>
+					</div>
 					<div id="unselected-monitors" class="userContainer"></div>
 				</td>
 				<td>
-					<div class="userContainerTitle"><fmt:message key="label.tab.class.monitors.selected" /></div>
+					<div class="userContainerTitle">
+						<fmt:message key="label.tab.class.monitors.selected" />
+						<span id="sort-selected-monitors" class="sortUsersButton"/>▲</span>
+					</div>
 					<div id="selected-monitors" class="userContainer"></div>
 				</td>
 			</tr>
 			<tr>
 				<td>
-					<div class="userContainerTitle"><fmt:message key="label.tab.class.monitors.unselected" /></div>
+					<div class="userContainerTitle">
+						<span id="sort-unselected-learners" class="sortUsersButton"/>▲</span>
+						<fmt:message key="label.tab.class.learners.unselected" />
+					</div>
 					<div id="unselected-learners" class="userContainer"></div>
 				</td>
 				<td>
-					<div class="userContainerTitle"><fmt:message key="label.tab.class.monitors.selected" /></div>
+					<div class="userContainerTitle">
+						<span id="sort-selected-learners" class="sortUsersButton"/>▲</span>
+						<fmt:message key="label.tab.class.learners.selected" />
+					</div>
 					<div id="selected-learners" class="userContainer"></div>
 				</td>
 			</tr>
Index: lams_central/web/css/newLesson.css
===================================================================
RCS file: /usr/local/cvsroot/lams_central/web/css/Attic/newLesson.css,v
diff -u -r1.3 -r1.4
--- lams_central/web/css/newLesson.css	8 Jan 2013 11:19:31 -0000	1.3
+++ lams_central/web/css/newLesson.css	9 Jan 2013 15:18:37 -0000	1.4
@@ -146,6 +146,13 @@
 	text-align: center;
 }
 
+.sortUsersButton {
+	text-align: right;
+	padding-right: 3px;
+	float: right;
+	cursor: pointer;
+}
+
 .droppableHighlight {
 	padding : 1px;
 	border: 5px solid #5c9ccc;
Index: lams_central/web/includes/javascript/newLesson.js
===================================================================
RCS file: /usr/local/cvsroot/lams_central/web/includes/javascript/Attic/newLesson.js,v
diff -u -r1.3 -r1.4
--- lams_central/web/includes/javascript/newLesson.js	8 Jan 2013 11:19:31 -0000	1.3
+++ lams_central/web/includes/javascript/newLesson.js	9 Jan 2013 15:18:37 -0000	1.4
@@ -1,6 +1,7 @@
-// ********** MAIN FUNCTIONS **********
+// ********** MAIN FUNCTIONS **********
 var tree;
-var lastSelectedUsers = [];
+var lastSelectedUsers = {};
+var sortOrderDescending = {};
 var submitInProgress = false;
 		
 function initLessonTab(){
@@ -159,6 +160,8 @@
 						   }
 		});
 	});
+	
+	$('.sortUsersButton').click(sortUsers);
 }
 
 
@@ -176,7 +179,7 @@
 	});
 	
 	$('#introEnableField').change(function(){
-		$('#introSection input, #introSection textarea').prop('disabled', !$(this).is(':checked'));
+		$('#introDescriptionField, #introImageField').prop('disabled', !$(this).is(':checked'));
 	});
 	
 	$('#presenceEnableField').change(function(){
@@ -367,7 +370,10 @@
 	if (users) {
 		// create user DIVs
 		$.each(users, function(index, userJSON) {
-			$('#' + containerID).append($('<div />').attr('userId', userJSON.userID)
+			$('#' + containerID).append($('<div />').attr({
+											'userId'  : userJSON.userID,
+											'sortKey' : userJSON.lastName
+											})
 					                      .addClass('draggableUser')
             						      .text(userJSON.firstName + ' ' + userJSON.lastName 
             						    		  + ' (' + userJSON.login + ')')
@@ -401,6 +407,36 @@
 	return list;
 }
 
+function sortUsers() {
+	var buttonId = $(this).attr('id');
+	var container = $('#' + buttonId.substring(buttonId.indexOf('-') + 1));
+	var users = container.children('div.draggableUser');
+	if (users.length > 1) {
+		var sortOrderDesc = sortOrderDescending[buttonId];
+		
+		users.each(function(){
+			$(this).detach();
+		}).sort(function(a, b){
+			var keyA = $(a).attr('sortKey');
+			var keyB = $(b).attr('sortKey');
+			var result = keyA > keyB ? 1 : keyA < keyB ? -1 : 0;
+			return sortOrderDesc ? result : -result;
+		}).each(function(){
+			$(this).appendTo(container);
+		});
+		
+		if (sortOrderDesc) {
+			$(this).html('▲');
+			sortOrderDescending[buttonId] = false;
+		} else {
+			$(this).html('▼');
+			sortOrderDescending[buttonId] = true;
+		}
+		
+		colorDraggableUsers(container);
+	}
+}
+
 // ********** ADVANCED TAB FUNCTIONS **********
 
 function updateSplitLearnersFields(){