diff --git a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
index cde52ec..1b20c90 100644
--- a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
+++ b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
@@ -4186,14 +4186,18 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
         $('#btnIdentity').addClass('btn-primary');
 
         // clear canvas before drawing transparency box 
-              $('#canvas').removeLayers();
-             var paintCanvasObj = document.getElementById("canvasPaint");
-             var ctx = paintCanvasObj.getContext("2d");
-           ctx.clearRect(0, 0, 2277, 3248);
-           var sktch = $('#canvasPaint').sketch();
-           $('#canvasPaint').sketch().actions = [];
-           $("#annotationpaintbrushsize").removeClass("activebtncolor");
-           $("#annotationpainteraser").removeClass("activebtncolor");
+        if ($rootScope.isAnnotationWindowOpen == true){
+            $('#canvas').removeLayers();
+            var paintCanvasObj = document.getElementById("canvasPaint");
+            if (paintCanvasObj != null) {
+                var ctx = paintCanvasObj.getContext("2d");
+                ctx.clearRect(0, 0, 2277, 3248);
+            }
+            var sktch = $('#canvasPaint').sketch();
+            $('#canvasPaint').sketch().actions = [];
+            $("#annotationpaintbrushsize").removeClass("activebtncolor");
+            $("#annotationpainteraser").removeClass("activebtncolor");
+        }
 
         //hide the speechbubble
         
@@ -5665,12 +5669,17 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
         $("#bord").remove();
 
         // clear canvas on closing of transparency box 
-        $('#canvas').removeLayers();
-        var paintCanvasObj = document.getElementById("canvasPaint");
-        var ctx = paintCanvasObj.getContext("2d");
-        ctx.clearRect(0, 0, 2277, 3248);
-        var sktch = $('#canvasPaint').sketch();
-        $('#canvasPaint').sketch().actions = [];
+        if ($rootScope.isAnnotationWindowOpen == true) {
+            $('#canvas').removeLayers();
+            var paintCanvasObj = document.getElementById("canvasPaint");
+            if (paintCanvasObj != null) {
+                var ctx = paintCanvasObj.getContext("2d");
+                ctx.clearRect(0, 0, 2277, 3248);
+
+                var sktch = $('#canvasPaint').sketch();
+                $('#canvasPaint').sketch().actions = [];
+            }
+        }
        // $("#annotationpaintbrushsize").removeClass("activebtncolor");
        // $("#annotationpainteraser").removeClass("activebtncolor");