$querry = $_POST['search'];
if(!empty($querry) && $querry != 'Suche' && $querry != 'Search') {
	$groupid = $manager->computeId($querry);
	$pageid = ($groupid == IDs::HOME || $groupid == IDs::PLAN
		|| $groupid == IDs::CONTACT || $groupid == IDs::SIDENOTE) ?
		'' : 'start';
}

public function computeId($querry) {
	foreach($this->contents as $id => $content) {
		if(levenshtein($querry, $id) <= strlen($querry)/2)
			return $id;
		$keywords = $content->getKeywords();
		foreach($keywords as $keyword) {
			if(levenshtein($querry, $keyword) <= strlen($querry)/2)
				return $id;
		}
	}
	return self::HOME;
}

public function getKeywords() {
	$wordfile = $this->path.DIRECTORY_SEPARATOR.'keywords.txt';
	if(!file_exists($wordfile))
		return array();
	$keywords = file_get_contents($wordfile);
	$keywords = preg_replace('=\r|\n|\r\n=', ',', $keywords);
	return explode(',', $keywords);
}