--- a/plugins/content_types/mpiwg_geobrowser_lineoverlay.inc	Thu May 28 10:28:12 2015 +0200
+++ b/plugins/content_types/mpiwg_geobrowser_lineoverlay.inc	Mon Oct 12 08:33:28 2015 +0200
@@ -22,6 +22,9 @@
     $block->content .= '
         <div id="lineoverlayContainerDiv" style="position:relative;"></div>
         <script type="text/javascript">
+  	if (typeof LineOverlayWidget_l=="undefined")
+	    {
+         
             var lineOverlay = new WidgetWrapper();
             var lineOverlayWidget = new LineOverlayWidget(lineOverlay);
             jq1110(document).ready(function() {
@@ -53,6 +56,10 @@
                     setTimeout(mpiwg_geobrowser_lineoverlay_bindDatasets, 100);
                 }
             }
+	    LineOverlayWidget_l = true;
+	    }
+
+
         </script>
     ';