diff --git a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
index f0b54de..af5970e 100644
--- a/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
+++ b/400-SOURCECODE/AIAHTML5.Web/app/controllers/DAController.js
@@ -2805,6 +2805,9 @@ AIA.controller("DAController", ["$scope", "$rootScope", "$compile", "$http", "$l
 
     $scope.HighlightBodyByTermListForBodySystem = function (TermList) {
 
+   //disable the background till the system gets highlighted.     
+       document.getElementById("daView").style.pointerEvents="none";
+
         $("#btnTranparency").attr('disabled', 'disabled');
         $scope.currentLayerNumber = $scope.layerNumber;
 
@@ -2856,6 +2859,8 @@ AIA.controller("DAController", ["$scope", "$rootScope", "$compile", "$http", "$l
 
                            $scope.message = AIAConstants.NO_BODY_SYSTEM_AVAILABLE;
                            $("#daMessageModal").modal('show');
+                           document.getElementById("daView").style.pointerEvents = "auto";
+
                        }
                        else {
                            console.log('1. HighlightBodyByTermListForBodySystem is called');
@@ -3030,6 +3035,9 @@ AIA.controller("DAController", ["$scope", "$rootScope", "$compile", "$http", "$l
 
                                                    $('#spinner').css('visibility', 'hidden')
                                                    $rootScope.isLoading = false;
+                                                   
+                                                   document.getElementById("daView").style.pointerEvents = "auto";
+
 
                                                    prevBRID = TermExistInBodyRegionId;
                                                })
@@ -3039,6 +3047,8 @@ AIA.controller("DAController", ["$scope", "$rootScope", "$compile", "$http", "$l
                                    else {
                                        $('#spinner').css('visibility', 'hidden')
                                        $rootScope.isLoading = false;
+                                       document.getElementById("daView").style.pointerEvents = "auto";
+
                                    }
 
                                })