Makes sure we add/remove all onended events for media streams in one central place.

modules/RTC/JitsiLocalTrack.js

 function JitsiLocalTrack(RTC, stream, eventEmitter, videoType,
   resolution)
 {
-    JitsiTrack.call(this, RTC, stream);
+    JitsiTrack.call(this, RTC, stream,
+        function () {
+            if(!self.dontFireRemoveEvent)
+                self.eventEmitter.emit(
+                    StreamEventTypes.EVENT_TYPE_LOCAL_ENDED, self);
+            self.dontFireRemoveEvent = false;
+        });
     this.eventEmitter = eventEmitter;
     this.videoType = videoType;
     this.dontFireRemoveEvent = false;
     this.resolution = resolution;
     var self = this;
-    this.stream.onended = function () {
-        if(!self.dontFireRemoveEvent)
-            self.eventEmitter.emit(StreamEventTypes.EVENT_TYPE_LOCAL_ENDED, self);
-        self.dontFireRemoveEvent = false;
-    };
 }
 
 JitsiLocalTrack.prototype = Object.create(JitsiTrack.prototype);

modules/RTC/JitsiRemoteTrack.js

  * @constructor
  */
 function JitsiRemoteTrack(RTC, data, sid, ssrc, eventEmitter) {
-    JitsiTrack.call(this, RTC, data.stream);
+    JitsiTrack.call(this, RTC, data.stream,
+        function () {
+            eventEmitter.emit(StreamEventTypes.EVENT_TYPE_REMOTE_ENDED, self);
+        });
     this.rtc = RTC;
     this.sid = sid;
     this.stream = data.stream;
     }
     this.eventEmitter = eventEmitter;
     var self = this;
-    if(this.stream)
-        this.stream.onended = function () {
-            eventEmitter.emit(StreamEventTypes.EVENT_TYPE_REMOTE_ENDED, self);
-        }
 }
 
 JitsiRemoteTrack.prototype = Object.create(JitsiTrack.prototype);

modules/RTC/JitsiTrack.js

     };
 }
 
+/**
+ * Adds onended/oninactive handler to a MediaStream.
+ * @param mediaStream a MediaStream to attach onended/oninactive handler
+ * @param handler the handler
+ */
+function addMediaStreamInactiveHandler(mediaStream, handler) {
+    if (mediaStream.addEventListener) {
+        // chrome
+        if(typeof mediaStream.active !== "undefined")
+            mediaStream.oninactive = handler;
+        else
+            mediaStream.onended = handler;
+    } else {
+        // themasys
+        mediaStream.attachEvent('ended', function () {
+            handler(mediaStream);
+        });
+    }
+}
+
 /**
  * Represents a single media track (either audio or video).
  * @constructor
+ * @param rtc the rtc instance
+ * @param stream the stream
+ * @param streamInactiveHandler the function that will handle
+ *        onended/oninactive events of the stream.
  */
-function JitsiTrack(rtc, stream)
+function JitsiTrack(rtc, stream, streamInactiveHandler)
 {
     /**
      * Array with the HTML elements that are displaying the streams.
     if (RTCBrowserType.isFirefox() && this.stream) {
         implementOnEndedHandling(this.stream);
     }
+
+    if(stream)
+        addMediaStreamInactiveHandler(stream, streamInactiveHandler);
 }
 
 /**