diff -r 044dc196ec8a -r d3668ecd9137 src/ztfy/utils/site.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ztfy/utils/site.py	Wed Jun 20 16:29:53 2012 +0200
@@ -0,0 +1,48 @@
+### -*- coding: utf-8 -*- ####################################################
+##############################################################################
+#
+# Copyright (c) 2008-2010 Thierry Florac <tflorac AT ulthar.net>
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+__docformat__ = "restructuredtext"
+
+# import standard packages
+
+# import Zope3 interfaces
+from zope.intid.interfaces import IIntIds
+
+# import local interfaces
+from ztfy.utils.interfaces import INewSiteManagerEvent
+
+# import Zope3 packages
+from zope.component import getUtility
+from zope.interface import implements
+from zope.location import locate
+
+# import local packages
+
+
+class NewSiteManagerEvent(object):
+    """Event notified when a new site manager is created"""
+
+    implements(INewSiteManagerEvent)
+
+    def __init__(self, obj):
+        self.object = obj
+
+
+def locateAndRegister(contained, parent, key, intids=None):
+    locate(contained, parent)
+    if intids is None:
+        intids = getUtility(IIntIds)
+    intids.register(contained)
+    parent[key] = contained