function trackback_rdf($timezone = 0) {
	global $id;
	if (!stristr($_SERVER['HTTP_USER_AGENT'], 'W3C_Validator')) {
	echo '<rdf:RDF ';
	echo "\n";
	echo '   xmlns:dc="http://purl.org/dc/elements/1.1/" ';
	echo "\n";
	echo '   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" ';
	echo "\n";
	echo '   xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/">';
	echo "\n";
	echo '<rdf:Description ';
	echo "\n";
	echo '   dc:creator="';
	the_author();
	echo '" '."\n";
	echo '   dc:date="';
	the_date_xml();
	echo ' @ ';
	the_time('g:i a');
	echo '" '."\n";
	echo '   dc:title="'.str_replace('--', '&#x2d;&#x2d;', wptexturize(strip_tags(get_the_title()))).'" '."\n";
	echo '   rdf:about="';
	the_permalink();
	echo '" '."\n";
	echo '   dc:identifier="';
	the_permalink();
	echo '" '."\n";
	echo '   trackback:ping="'.trackback_url(0);
	echo '" '."\n";
	echo '   dc:description="';
	the_excerpt_rss();
	echo '" />'."\n";
	echo '</rdf:RDF>';
	}
}