public static function updateUrl($css, $src)
{
self::$srcurl = $src;
$css = preg_replace_callback('/@import\\s+([\'"])(.*?)[\'"]/', array('T3Path', 'replaceurl'), $css);
$css = preg_replace_callback('/url\\(\\s*([^\\)\\s]+)\\s*\\)/', array('T3Path', 'replaceurl'), $css);
return $css;
}