diff --git a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
index ec91638..7b50a73 100644
--- a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
+++ b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
@@ -1470,14 +1470,16 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
 
                 var imageCanvas = document.getElementById('imageCanvas' + bodyRegionId + '_MR');
 
-                var width = imageCanvas.width;
-                var ht = imageCanvas.height;
+                if (imageCanvas != null || imageCanvas != undefined) {
+                    var width = imageCanvas.width;
+                    var ht = imageCanvas.height;
+
+                    var coloredCanvasContext = imageCanvas.getContext("2d");
+                    var coloredImageData = coloredCanvasContext.getImageData(0, 0, width, ht);
+                    var coloredImageDataVar = coloredImageData;
 
-                var coloredCanvasContext = imageCanvas.getContext("2d");
-                var coloredImageData = coloredCanvasContext.getImageData(0, 0, width, ht);
-                var coloredImageDataVar = coloredImageData;
-             
                     $rootScope.coloredImageMRCanvasList[parseInt(bodyRegionId)] = coloredImageDataVar;
+                }
                 
                                   
 
@@ -1831,15 +1833,17 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
 
                     var imageCanvas = document.getElementById('imageCanvas' + bodyRegionId);
 
-                    var width = imageCanvas.width;
-                    var ht = imageCanvas.height;
+                    if (imageCanvas != null || imageCanvas != undefined) {
+                        var width = imageCanvas.width;
+                        var ht = imageCanvas.height;
+
+                        var coloredCanvasContext = imageCanvas.getContext("2d");
+                        var coloredImageData = coloredCanvasContext.getImageData(0, 0, width, ht);
+                        var coloredImageDataVar = coloredImageData;
 
-                    var coloredCanvasContext = imageCanvas.getContext("2d");
-                    var coloredImageData = coloredCanvasContext.getImageData(0, 0, width, ht);
-                    var coloredImageDataVar = coloredImageData;
-             
 
-                    $rootScope.coloredImageCanvasList[parseInt(bodyRegionId - 1)] = coloredImageDataVar;
+                        $rootScope.coloredImageCanvasList[parseInt(bodyRegionId - 1)] = coloredImageDataVar;
+                    }
                     //
 
                     if (($scope.ColoredImageSRC != null || $scope.ColoredImageSRC != undefined)) {
@@ -4896,10 +4900,14 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
         $scope.CalculateImageCordinates($rootScope.viewOrientationId);
 
         //3.
-        if ($scope.zoomInOut == 25)
-            $('#canvasDiv').scrollLeft(0)
-        else
-            $('#canvasDiv').scrollLeft($('#canvasDiv').width() / 2)
+        if ($scope.zoomInOut == 25) {
+            if ($('#canvasDiv') != null)
+                $('#canvasDiv').scrollLeft(0)
+        }
+        else {
+            if ($('#canvasDiv') != null)
+               $('#canvasDiv').scrollLeft($('#canvasDiv').width() / 2)
+        }
 
         //remove annotation speech bubble
         if ($('#dot').length > 0) {