diff --git a/web/pgadmin/utils/ajax.py b/web/pgadmin/utils/ajax.py
index 45416b33b..1b2754ffa 100644
--- a/web/pgadmin/utils/ajax.py
+++ b/web/pgadmin/utils/ajax.py
@@ -10,6 +10,7 @@
 """Utility functions for dealing with AJAX."""
 
 from flask import Response
+from flask.ext.babel import gettext as _
 import json
 
 
@@ -25,28 +26,28 @@ def make_json_response(success=1, errormsg='', info='', result=None,
     doc['data'] = data
 
     return Response(
-        response=json.dumps(doc),
-        status=status,
-        mimetype="text/json"
-    )
+            response=json.dumps(doc),
+            status=status,
+            mimetype="text/json"
+            )
 
 
 def make_response(response=None, status=200):
     """Create a JSON response handled by the backbone models."""
     return Response(
-        response=json.dumps(response),
-        status=status,
-        mimetype="text/json"
-    )
+            response=json.dumps(response),
+            status=status,
+            mimetype="text/json"
+            )
 
 
 def internal_server_error(errormsg=''):
     """Create a response with HTTP status code 500 - Internal Server Error."""
     return make_json_response(
-                status=500,
-                success=0,
-                errormsg=errormsg
-    )
+            status=500,
+            success=0,
+            errormsg=errormsg
+            )
 
 
 def forbidden(errmsg=''):
@@ -61,42 +62,52 @@ def forbidden(errmsg=''):
 def unauthorized(errormsg=''):
     """Create a response with HTTP status code 401 - Unauthorized."""
     return make_json_response(
-                status=401,
-                success=0,
-                errormsg=errormsg
-    )
+            status=401,
+            success=0,
+            errormsg=errormsg
+            )
 
 
 def bad_request(errormsg=''):
     """Create a response with HTTP status code 400 - Bad Request."""
     return make_json_response(
-                status=400,
-                success=0,
-                errormsg=errormsg
-    )
+            status=400,
+            success=0,
+            errormsg=errormsg
+            )
 
 
 def precondition_required(errormsg=''):
     """Create a response with HTTP status code 428 - Precondition Required."""
     return make_json_response(
-                status=428,
-                success=0,
-                errormsg=errormsg
-    )
+            status=428,
+            success=0,
+            errormsg=errormsg
+            )
 
 
 def success_return(message=''):
     """Create a response with HTTP status code 200 - OK."""
     return make_json_response(
-                status=200,
-                success=1,
-                info=message
-    )
+            status=200,
+            success=1,
+            info=message
+            )
+
 
 def gone(errormsg=''):
     """Create a response with HTTP status code 410 - GONE."""
     return make_json_response(
-                status=410,
-                success=0,
-                errormsg=errormsg
-    )
+            status=410,
+            success=0,
+            errormsg=errormsg
+            )
+
+
+def not_implemented(errormsg=_('It is not implemented!')):
+    """Create a response with HTTP status code 501 - Not Implemented."""
+    return make_json_response(
+            status=501,
+            success=0,
+            errormsg=errormsg
+            )