--- a/app/store/Messgroessen.js	Thu Jul 25 14:26:06 2013 +0200
+++ b/app/store/Messgroessen.js	Thu Jul 25 15:39:15 2013 +0200
@@ -1,6 +1,16 @@
 Ext.define('Lada.store.Messgroessen', {
     extend: 'Ext.data.Store',
     fields: ['messgroesseId', 'messgro0esse'],
+    sorters: [{
+        property: 'messgro0esse',
+        transform: function(val) {
+            if (val) {
+                return val.toLowerCase();
+            } else {
+                return "";
+            };
+        }
+    }],
     autoLoad: true,
     proxy: {
         type: 'ajax',