diff --git a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
index 9e83265..7e96544 100644
--- a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
+++ b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
@@ -2639,19 +2639,20 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
 
         $('#layerChangeSlider').slider("option", "value", parseInt($rootScope.totalLayers) - parseInt($scope.layerNumber));
     }
-
+    $rootScope.PreviouslayerNumbr = 0;
     $scope.LayerChangeOnMouseUpDown = function (e) {
         //'x' button is displaying inside the input box in IE browser.
-
+      
         if (e.currentTarget.id == "incrmntVal") {
             //Dissectible Anatomy > Inappropriate Text in Layer Input box.
             if ($("#txtlayerNumber").val() == '') {
                 var layerInputVal = 0;
-
-                var layerInputValInc = parseInt(layerInputVal);
-                $scope.layerNumber = parseInt(layerInputValInc);
-                $("#txtlayerNumber").val($scope.layerNumber);
-
+              
+                    var layerInputValInc = parseInt(layerInputVal);
+                    $scope.layerNumber = parseInt(layerInputValInc);
+                    $("#txtlayerNumber").val($scope.layerNumber);
+                    $rootScope.PreviouslayerNumbr = $scope.layerNumber;
+               
             }
             else {
                 var layerInputVal = $("#txtlayerNumber").val();
@@ -2659,6 +2660,7 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
                     var layerInputValInc = parseInt(layerInputVal) + 1;
                     $scope.layerNumber = parseInt(layerInputValInc);
                     $("#txtlayerNumber").val($scope.layerNumber);
+                    $rootScope.PreviouslayerNumbr = $scope.layerNumber;
                 }
 
             }
@@ -2672,17 +2674,20 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
                 var layerInputValDec = parseInt(layerInputVal);
                 $scope.layerNumber = parseInt(layerInputValDec);
                 $("#txtlayerNumber").val($scope.layerNumber);
+                $rootScope.PreviouslayerNumbr = $scope.layerNumber;
 
             }
-            else {
+            else
+            {
                 var layerInputVal = $("#txtlayerNumber").val();
                 if (layerInputVal > 0) {
                     var layerInputValDec = parseInt(layerInputVal) - 1;
                     $scope.layerNumber = parseInt(layerInputValDec);
                     $("#txtlayerNumber").val($scope.layerNumber);
+                    $rootScope.PreviouslayerNumbr = $scope.layerNumber;
                 }
             }
-
+           
         }
         $scope.LayerChange();
 
@@ -8352,16 +8357,20 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
            });
 
     }
-
+  
     $scope.LayerChangeBasedOnKeyPressed = function (e) {
         //	Dissectible Anatomy > Should not display blank page if no layer is selected.
         if (e.keyCode == 13) {
             if ($("#txtlayerNumber").val() == '')
             {
-                $scope.layerNumber = 0;
+             
+                $("#txtlayerNumber").val($rootScope.PreviouslayerNumbr);
+           }
+            else
+            {
+                $scope.LayerChange();
             }
             
-            $scope.LayerChange();
          
         }
 
@@ -8374,6 +8383,7 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
                 var layerInputValInc = parseInt(layerInputVal) + 1;
                 $scope.layerNumber = parseInt(layerInputValInc);
                 $("#txtlayerNumber").val($scope.layerNumber);
+                $rootScope.PreviouslayerNumbr = $scope.layerNumber;
             }
 
 
@@ -8386,6 +8396,7 @@ function ($scope, $rootScope, $compile, $http, $log, $location, $timeout, DA, Mo
                 var layerInputValDec = parseInt(layerInputVal) - 1;
                 $scope.layerNumber = parseInt(layerInputValDec);
                 $("#txtlayerNumber").val($scope.layerNumber);
+                $rootScope.PreviouslayerNumbr = $scope.layerNumber;
             }
         }
 
diff --git a/400-SOURCECODE/AIAHTML5.Web/app/views/da/da-view.html b/400-SOURCECODE/AIAHTML5.Web/app/views/da/da-view.html
index e309d6a..1488834 100644
--- a/400-SOURCECODE/AIAHTML5.Web/app/views/da/da-view.html
+++ b/400-SOURCECODE/AIAHTML5.Web/app/views/da/da-view.html
@@ -427,7 +427,11 @@
               && e.which != 8   // backspace
               && e.which != 46  // delete
               && (e.which < 37  // arrow keys
-                || e.which > 40)) {
+                  || e.which > 40)
+              && (e.keyCode < 96  // Dissectible Anatomy > Num Lock is not working for enter the layer.
+              || e.keyCode > 105))
+
+            {
                 e.preventDefault();
                 return false;
             }