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diff --git a/lib/docbuilder/src/docb_xmerl_xml_cb.erl b/lib/docbuilder/src/docb_xmerl_xml_cb.erl
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@@ -0,0 +1,88 @@
+%% ``The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved via the world wide web at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See
+%% the Licence for the specific language governing rights and limitations
+%% under the License.
+%%
+%% The Initial Developer of the Original Code is Ericsson AB.
+%% Portions created by Ericsson are Copyright 1999-2006, Ericsson AB.
+%% All Rights Reserved.��
+%%
+%%     $Id$
+%%
+-module(docb_xmerl_xml_cb).
+
+%% This is the callback module for exporting XHTML to a DocBuilder
+%% erlref or chapter document in XML format.
+%% See docb_edoc_xml_cb.erl for further information.
+%%
+%% The origin of this file is the xmerl module xmerl_otpsgml.erl
+%% written by Ulf Wiger and Richard Carlsson.
+
+-export(['#xml-inheritance#'/0]).
+
+-export(['#root#'/4,
+	 '#element#'/5,
+	 '#text#'/1]).
+
+-include("xmerl.hrl").
+
+'#xml-inheritance#'() ->
+    [xmerl_xml].
+
+'#root#'(Data, _Attrs, [], _E) -> 
+    ["<",DTD,">"] = hd(hd(Data)),
+    ["<?xml version=\"1.0\" encoding=\"latin1\" ?>\n",
+     "<!DOCTYPE "++DTD++" SYSTEM \""++DTD++".dtd\">\n",
+     Data].
+
+'#element#'(Tag, Data, Attrs, _Parents, _E) ->
+    {NewTag, NewAttrs} = convert_tag(Tag, Attrs),
+    xmerl_lib:markup(NewTag, NewAttrs, Data).
+
+'#text#'(Text) ->
+    xmerl_lib:export_text(Text).
+
+%% Utility functions
+
+convert_tag(a, [Attr]) ->
+    case Attr#xmlAttribute.name of
+	href ->
+	    Val = Attr#xmlAttribute.value,
+	    case is_url(Val) of
+		true ->
+		    {url, [Attr]};
+		false ->
+		    {seealso, [Attr#xmlAttribute{name=marker}]}
+	    end;
+	name ->
+	    {marker, [Attr#xmlAttribute{name=id}]}
+    end;
+convert_tag(b, Attrs)          -> {em, Attrs};
+convert_tag(blockquote, Attrs) -> {quote, Attrs};
+convert_tag(code, Attrs)       -> {c, Attrs};
+convert_tag(dd, Attrs)         -> {item, Attrs};
+convert_tag(dl, Attrs)         -> {taglist, Attrs};
+convert_tag(dt, Attrs)         -> {tag, Attrs};
+convert_tag(li, Attrs)         -> {item, Attrs};
+convert_tag(ol, Attrs)         -> {list, Attrs};
+convert_tag(strong, Attrs)     -> {em, Attrs};
+convert_tag(td, Attrs)         -> {cell, Attrs};
+convert_tag(tr, Attrs)         -> {row, Attrs};
+convert_tag(tt, Attrs)         -> {c, Attrs};
+convert_tag(ul, Attrs)         -> {list, Attrs};
+convert_tag(underline, Attrs)  -> {em, Attrs};
+convert_tag(Tag, Attrs)        -> {Tag, Attrs}.
+
+is_url("http:"++_) -> true;
+is_url("../"++_) -> true;
+is_url(FileRef) ->
+    case filename:extension(FileRef) of
+	"" -> false; % no extension = xml file, DocBuilder resolves
+	_Ext -> true % extension, DocBuilder must not resolve
+    end.