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+#!/usr/bin/env perl
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This file incorporates work covered by the following license notice:
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed
+# with this work for additional information regarding copyright
+# ownership. The ASF licenses this file to you under the Apache
+# License, Version 2.0 (the "License"); you may not use this file
+# except in compliance with the License. You may obtain a copy of
+# the License at http://www.apache.org/licenses/LICENSE-2.0 .
+#
+
+require "common.pl";
+
+print "Content-type: text/html\n\n";
+print "<HTML>";
+
+# get current and last shown picture id
+$sCurrPic = join( "", common::File_read( "currpic.txt" ) );
+
+%aRequestMap = common::HTTP_getRequest();
+$sLastPic = $aRequestMap{ "LastPic" };
+
+print "<HEAD>";
+ print "<META http-equiv=\"refresh\" CONTENT=\"" . $common::REFRESH_TIME . "; URL=poll.pl?LastPic=" . $sCurrPic . "\">";
+print "</HEAD>";
+
+#' a new picture was chosen ?
+if( $sLastPic ne $sCurrPic )
+{
+ # then show the new picture
+ print "<BODY bgcolor=\"red\" onLoad=\"parent.frame1.location.href='./show.pl?" . $sCurrPic . "'\">";
+}
+else
+{
+ # otherwise do nothing
+ print "<BODY bgcolor=\"green\">";
+}
+
+print "</BODY>";
+
+print "</HTML>";