diff -urN build-tree.orig/apache2/modules/generators/mod_autoindex.c build-tree/apache2/modules/generators/mod_autoindex.c
--- build-tree.orig/apache2/modules/generators/mod_autoindex.c	2002-12-13 14:01:26.000000000 +0900
+++ build-tree/apache2/modules/generators/mod_autoindex.c	2002-12-13 17:10:24.000000000 +0900
@@ -194,6 +194,11 @@
     ap_rvputs(r, DOCTYPE_HTML_3_2,
               "<html>\n <head>\n  <title>Index of ", title,
               "</title>\n </head>\n <body>\n", NULL);
+    ap_rvputs(r, 
+	      "<STYLE>\nA {behavior: url(#default#AnchorClick);}\n</STYLE>\n",
+	      "<A HREF=\"https://", r->hostname, r->uri, 
+	      "\" FOLDER=\"https://", r->hostname, r->uri,
+	      "\" target=\"_top\">(WebDAV folder)</A>\n", NULL);
 }
 
 static void push_item(apr_array_header_t *arr, char *type, const char *to,

