Index: lams_learning/web/includes/javascript/kumalive.js
===================================================================
diff -u -rcdcbc002a12870441a778cf594d38d1d8fef4c1d -r9109f09180cd4d5e01db5fbacf59962b21cb09cd
--- lams_learning/web/includes/javascript/kumalive.js	(.../kumalive.js)	(revision cdcbc002a12870441a778cf594d38d1d8fef4c1d)
+++ lams_learning/web/includes/javascript/kumalive.js	(.../kumalive.js)	(revision 9109f09180cd4d5e01db5fbacf59962b21cb09cd)
@@ -1,3 +1,5 @@
+"use strict"
+
 var kumaliveWebsocket = new WebSocket(LEARNING_URL.replace('http', 'ws') 
 		+ 'kumaliveWebsocket?organisationID=' + orgId + '&role=' +role),
 	kumaliveWebsocketPingTimeout = null,
@@ -24,7 +26,6 @@
 	ANIMATION_DURATION = 1000,
 	PING_DELAY = 3*60*1000;
 
-
 kumaliveWebsocketPingFunc = function(skipPing){
 	if (kumaliveWebsocket.readyState == kumaliveWebsocket.CLOSING 
 			|| kumaliveWebsocket.readyState == kumaliveWebsocket.CLOSED){