diff --git a/docs/HISTORY.txt b/docs/HISTORY.txt
index 883eb5a..dfad646 100644
--- a/docs/HISTORY.txt
+++ b/docs/HISTORY.txt
@@ -4,6 +4,9 @@ Changelog
 1.0.7 (unreleased)
 ------------------
 
+* Added check in tree generation if it allready exists (reopening the contenttree window).
+  [phgross]
+
 1.0.6 (2012-09-28)
 ------------------
 
diff --git a/plone/formwidget/contenttree/jquery-contenttree/contenttree.js b/plone/formwidget/contenttree/jquery-contenttree/contenttree.js
index 0ae732d..891187b 100755
--- a/plone/formwidget/contenttree/jquery-contenttree/contenttree.js
+++ b/plone/formwidget/contenttree/jquery-contenttree/contenttree.js
@@ -105,10 +105,12 @@ if(jQuery) (function($){
                 $(t).find('li.selectable a').bind(o.selectEvent, handleSelectEvent);
             }
 
-            $(this).each(function() {
+            if ($(this).children('ul.navTree').length <= 0) {
+              $(this).each(function() {
+                  loadTree(this, o.rootUrl, 0);
+              });
+            }
 
-                loadTree(this, o.rootUrl, 0);
-            });
         }
     });