Index: branches/version-2_13-dev/data/class/pages/api/LC_Page_Api_Json.php
===================================================================
--- branches/version-2_13-dev/data/class/pages/api/LC_Page_Api_Json.php	(revision 23124)
+++ branches/version-2_13-dev/data/class/pages/api/LC_Page_Api_Json.php	(revision 23248)
@@ -65,4 +65,9 @@
 
         list($response_outer, $arrResponse) = SC_Api_Operation::doApiAction($arrParam);
+
+        if (isset($arrParam["callback"])) {
+            $arrResponse["callback"] = $arrParam["callback"];
+        }
+
         SC_Api_Operation_Ex::sendApiResponse('json', $response_outer, $arrResponse);
         SC_Response_Ex::actionExit();