XML File:
<?xml version="1.0" encoding="utf-8" ?>
<Mainzer_Histo_Maps>
	<site>
		<title>Mainzer Histo Maps</title>
	</site>
	<pictures>
		<relative_dir>histo_bilder/</relative_dir>
		<preview_name>PreviewSlide.jpg</preview_name>
		<max_x>200</max_x>
		<max_y>200</max_y>
		<quality>60</quality>
		<info_file>info.txt</info_file>
		<cache_pictures>yes</cache_pictures>
		<cache_dir>picture_cache/</cache_dir>
	</pictures>
</Mainzer_Histo_Maps>


PHP File:
$config = simplexml_load_file('config.xml');

printSlide($slide[$slides[$i]]->getTitle(), $slide[$slides[$i]]->getDescription(), $slide[$slides[$i]]->getColor(), $slide[$slides[$i]]->getDirName());

function printSlide($title, $description, $color, $directory)
{	
@@	$picturePath = $GLOBALS["picture_relative_dir"] . $directory . '/' . $config->pictures->preview_name . '&amp;width=' . $GLOBALS["picture_max_x"] . '&amp;height=' . $GLOBALS["picture_max_y"];
}