diff --git a/src/de/mpg/molgen/buczek/portifix/Gui.java b/src/de/mpg/molgen/buczek/portifix/Gui.java
index 61d2225..a7be9d8 100644
--- a/src/de/mpg/molgen/buczek/portifix/Gui.java
+++ b/src/de/mpg/molgen/buczek/portifix/Gui.java
@@ -5,6 +5,8 @@
  */
 package de.mpg.molgen.buczek.portifix;
 
+import java.awt.Component;
+import java.awt.Container;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.FocusEvent;
@@ -78,6 +80,17 @@ private String singleColumnValueOfArray(String s[]) {
     private String singleColumnValueOfSelection(int col) {
         return singleColumnValueOfArray(columnValuesOfSelection(col));
     }
+    
+    private static void setTreeEnabled(Component component, boolean enabled) {
+      component.setEnabled(enabled);
+      if (component instanceof Container) {
+          Container container = (Container)component;
+          for (Component child : container.getComponents()) {
+              setTreeEnabled(child,enabled);
+          }
+      }
+    }
+    
 
     private void updateForm() {