diff --git a/ox/web/archive.py b/ox/web/archive.py
new file mode 100644
index 0000000..54c45a4
--- /dev/null
+++ b/ox/web/archive.py
@@ -0,0 +1,10 @@
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=4:sts=4:ts=4
+
+
+def getId(url):
+    return url.split("/")[-1]
+
+def getUrl(id):
+    return "http://www.archive.org/details/%s" % id
+