stupid function

function ginger_parse_dom($output)
{

    $ginger_script_tags = array(
        'platform.twitter.com/widgets.js',
        'apis.google.com/js/plusone.js',
        'apis.google.com/js/platform.js',
        'connect.facebook.net',
        'platform.linkedin.com',
        'assets.pinterest.com',
        'www.youtube.com/iframe_api',
        'www.google-analytics.com/analytics.js',
        'google-analytics.com/ga.js',
        'new google.maps.',
        '_getTracker',
        'disqus.com',
    );
    $ginger_script_tags = apply_filters('ginger_script_tags', $ginger_script_tags);
    $ginger_script_async_tags = array(
        'addthis.com',
        'sharethis.com'
    );
    $ginger_script_async_tags = apply_filters('ginger_script_async_tags', $ginger_script_async_tags);
    $ginger_iframe_tags = array(
        'youtube.com',
        'platform.twitter.com',
        'www.facebook.com/plugins/like.php',
        'www.facebook.com/plugins/likebox.php',
        'apis.google.com',
        'www.google.com/maps/embed/',
        'player.vimeo.com',
        'disqus.com'
    );
    $ginger_iframe_tags = apply_filters('ginger_add_iframe', $ginger_iframe_tags);


    if (strpos($output, '<html') === false):
        return $output;
    elseif (strpos($output, '<html') > 200):
        return $output;
    endif;
    libxml_use_internal_errors(true);
    $doc = new DOMDocument();
    $doc->encoding = 'utf-8';
    $doc->loadHTML(mb_convert_encoding($output, 'HTML-ENTITIES', 'UTF-8'));
    // get all the script tags
    $script_tags = $doc->getElementsByTagName('script');
    $async_array = array();
    $domElemsToRemove = array();
    foreach ($script_tags as $script):
        $src_script = $script->getAttribute('src');
        if ($src_script):
            if (strpos_arr($src_script, $ginger_script_tags) !== false):
                $script->setAttribute("class", "ginger-script");
                $script->setAttribute("type", "text/plain");
                continue;
            endif;
            if (strpos_arr($src_script, $ginger_script_async_tags) !== false):
                //return print_r($script->nodeValue);
                $async_array[] = $src_script;
                $domElemsToRemove[] = $script;
                continue;
            endif;
        endif;
        if ($script->nodeValue):
            $key = strpos_arr($script->nodeValue, $ginger_script_tags);
            if ($key !== false):
                if ($ginger_script_tags[$key] == 'www.google-analytics.com/analytics.js' || $ginger_script_tags[$key] == 'google-analytics.com/ga.js')
                    if (strpos($script->nodeValue, 'anonymizeIp') !== false):
                        continue;
                    endif;
                $script->setAttribute("class", "ginger-script");
                $script->setAttribute("type", "text/plain");
                if ($ginger_script_tags[$key] == 'disqus.com/embed.js' || $ginger_script_tags[$key] == 'disqus.com'):
                    $script->setAttribute("class", "ginger-script");
                    $script->setAttribute("type", "text/plain");
                endif;
            endif;
        endif;
    endforeach;
    foreach ($domElemsToRemove as $domElement) {
        $domElement->parentNode->removeChild($domElement);
    }
    // get all the iframe tags
    $iframe_tags = $doc->getElementsByTagName('iframe');
    foreach ($iframe_tags as $iframe):
        $src_iframe = $iframe->getAttribute('src');
        if ($src_iframe):
            if (strpos_arr($src_iframe, $ginger_iframe_tags) !== false):
                $iframe->removeAttribute('src');
                $iframe->setAttribute("data-ce-src", $src_iframe);
                if ($iframe->hasAttribute('class')):
                    $addclass = $iframe->getAttribute('class');
                else:
                    $addclass = '';
                endif;
                $iframe->setAttribute("class", "ginger-iframe " . $addclass);
            endif;
        endif;
    endforeach;
    if (!empty($async_array)):
        $text = json_encode($async_array);
        $text = 'var async_ginger_script = ' . $text . ';';
        $head = $doc->getElementsByTagName('head')->item(0);
        $element = $doc->createElement('script', $text);
        $head->appendChild($element);
    endif;

    // get the HTML string back
    $output = $doc->saveHTML();
    libxml_use_internal_errors(false);
    return $output;
}