Index: branches/5.2.x/core/admin_templates/tree.tpl
===================================================================
diff -u -N -r15323 -r15856
--- branches/5.2.x/core/admin_templates/tree.tpl	(.../tree.tpl)	(revision 15323)
+++ branches/5.2.x/core/admin_templates/tree.tpl	(.../tree.tpl)	(revision 15856)
@@ -134,7 +134,8 @@
 			getFrame('head').$('#extra_toolbar').html('');
 		}
 
-		var $phrase = "<inp2:adm_TreeEditWarrning label='la_EditingInProgress' escape='1'/>";
+		var $phrase = '<inp2:m_Phrase label="la_EditingInProgress" js_escape="1"/>';
+
 		if (getFrame('main').$edit_mode) {
 			return confirm($phrase) ? true : false;
 		}