Index: lams_tool_chat/web/includes/javascript/learning.js
===================================================================
RCS file: /usr/local/cvsroot/lams_tool_chat/web/includes/javascript/learning.js,v
diff -u -r1.15.2.2 -r1.15.2.3
--- lams_tool_chat/web/includes/javascript/learning.js	7 Nov 2016 13:21:04 -0000	1.15.2.2
+++ lams_tool_chat/web/includes/javascript/learning.js	5 Dec 2016 06:35:19 -0000	1.15.2.3
@@ -15,15 +15,31 @@
 	});
 });
 
-
-	// for chat users to be indetified by different colours
+// for chat users to be indetified by different colours
 var PALETTE = ["#008CD2", "#DF7C08", "#83B532", "#E0BE40", "#AE8124", "#5F0704", "#004272", "#CD322B", "#254806"],
 	// only Monitor can send a personal message
 	selectedUser = null,
 	// init the connection with server using server URL but with different protocol
 	chatToolWebsocket = new WebSocket(APP_URL.replace('http', 'ws') + 'learningWebsocket?toolSessionID=' + TOOL_SESSION_ID);
 
 chatToolWebsocket.onmessage = function(e){
+	
+	//if messageDiv has been already initialized in $(document).ready(..) simply invoke onmessageHandler, otherwise run it with a timeout
+	if (typeof messageDiv == 'undefined') {
+		setTimeout(function() {
+			onmessageHandler(e);
+		}, 500);
+	} else {
+		onmessageHandler(e);
+	}
+	
+}
+
+chatToolWebsocket.onerror = function(e){
+	alert("Error estabilishing connection to server: " + e.data);
+}
+
+function onmessageHandler(e) {
 	// create JSON object
 	var input = JSON.parse(e.data);
 	// clear old messages
@@ -65,10 +81,6 @@
 	});
 }
 
-chatToolWebsocket.onerror = function(e){
-	alert("Error estabilishing connection to server: " + e.data);
-}
-
 function userSelected(userDiv) {
 	var userDivContent = userDiv.html();
 	// is Monitor clicked the already selectedd user, desect him and make message go to everyone