diff --git a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
index a18b271..725cda7 100644
--- a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
+++ b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
@@ -6090,8 +6090,10 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
 
         $scope.clicked = true;
         //  OnPaintCanvasMouseDown(event);
-        canvas.addEventListener('mousedown', $scope.OnPaintCanvasMouseDown, false);
-        canvas.addEventListener('mouseup', $scope.OnPaintCanvasMouseUp, false);
+
+        var annotationCanvas= document.getElementById('canvas');
+        annotationCanvas.addEventListener('mousedown', $scope.OnPaintCanvasMouseDown, false);
+        annotationCanvas.addEventListener('mouseup', $scope.OnPaintCanvasMouseUp, false);
         //  alert("doclick");
     };