frames.php
public function getUrls()
    {
        if (is_integer($this->focus)) {
            return $this->frames[$this->focus]->getUrls();
        }
        $urls = array();
        foreach ($this->frames as $frame) {
            $urls = array_merge($urls, $frame->getUrls());
        }

        return array_values(array_unique($urls));
    }
public function getUrls()
    {
        if (is_integer($this->focus)) {
            return $this->frames[$this->focus]->getUrls();
        }
        $urls = array();
        foreach ($this->frames as $frame) {
            $urls = array_merge($urls, $frame->getUrls());
        }

        return array_values(array_unique($urls));
    }
Accessor for a list of all fixed links.

@return array   List of urls as strings.