Index: trunk/kernel/admin_templates/incs/tree.js
===================================================================
diff -u -r4735 -r5002
--- trunk/kernel/admin_templates/incs/tree.js	(.../tree.js)	(revision 4735)
+++ trunk/kernel/admin_templates/incs/tree.js	(.../tree.js)	(revision 5002)
@@ -100,7 +100,10 @@
 				}
 				else {
 					// ensures, that click is made before AJAX request will be sent
-					window.parent.getFrame(link.target).location.href = this.href;
+					if (res === true) {
+						// only in case of "true" is returned, used in catalog
+						window.parent.getFrame(link.target).location.href = this.href;
+					}
 					
 					if (!this.treeItem.Expanded && typeof(this.treeItem.folderClick) == 'function') {
 						if (this.treeItem.folderClick());