--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/override/RowExpander.js	Tue May 17 17:10:39 2016 +0200
@@ -0,0 +1,18 @@
+/* Copyright (C) 2013 by Bundesamt fuer Strahlenschutz
+ * Software engineering by Intevation GmbH
+ *
+ * This file is Free Software under the GNU GPL (v>=3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out
+ * the documentation coming with IMIS-Labordaten-Application for details.
+ */
+
+Ext.define('Lada.override.RowExpander', {
+    override: 'Ext.grid.plugin.RowExpander',
+    beforeReconfigure: function (grid, store, columns, oldStore, oldColumns) {
+        var expander = this.getHeaderConfig();
+        expander.locked = true;
+        if (columns) {
+            columns.unshift(expander);
+        }
+    }
+});