--- a/plugins/content_types/mpiwg_geobrowser_overlay.inc	Thu May 28 10:28:12 2015 +0200
+++ b/plugins/content_types/mpiwg_geobrowser_overlay.inc	Mon Oct 12 08:33:28 2015 +0200
@@ -23,6 +23,10 @@
         Overlay:
         <div id="overlayContainerDiv" style="position:relative;"></div>
         <script type="text/javascript">
+	    if (typeof OverlayloaderWidget_l=="undefined")
+	    {
+         
+
             var overlayDiv = document.getElementById("overlayContainerDiv");
             var overlay = new WidgetWrapper();
             var overlayWidget = new OverlayloaderWidget(overlayloader,overlayDiv);
@@ -33,6 +37,8 @@
                     }
                 }, false);
             });
+	    OverlayloaderWidget_l = true;
+	    }
         </script>
     ';