public function filterRange($range)
    {
        if (is_int($range)) {
            $level = $range;
            $depth = 0;
        } else {
            reset($range);
            $level = key($range);
            $depth = current($range);
        }

        if (1 === $level) {
            $nodeList = $this->xp->query('/descendant-or-self::*[ name() = "ul" and count( ancestor-or-self::ul ) >= '.$level.'  ]')->item(0);
        } else {
            $nodeList = $this->xp->query('/descendant-or-self::*[ name() = "ul" and count( ancestor-or-self::ul ) >= '.$level.' and ( descendant-or-self::*[ contains(@class, "open") or contains(@class, "active") ] or ancestor-or-self::*[ contains(@class, "open")  or contains(@class, "active") ] ) ]')->item(0);
        }

        if (!$nodeList) {
            return false;
        }

        if (false === $depth) {
            return $nodeList;
        }

        $depthNodelist = $this->xp->query('./descendant::*[ name() = "ul" and count( ancestor-or-self::ul ) > '.($level + $depth).' ]', $nodeList);

        foreach ($depthNodelist as $node) {
            $node->parentNode->removeChild($node);
        }

        if ($nodeList) {
            return $nodeList;
        } else {
            return false;
        }
    }