protected function _minify($content)
{
$content = preg_replace('#\\s*/\\*\\*.*?\\*/#ms', '', $content);
//remove comments
$content = preg_replace('#([\\r\\n]+)\\s*\\1#', '\\1', $content);
//remove blank lines
$content = preg_replace('#([\\r\\n]+)\\s+{#', '{', $content);
//repositionClose;
return $content;
}