function url_correction_of_html_output($content){
	$content = preg_replace_callback(
		'/\<(img|link|iframe|frame|frameset|script|embed|video|audio)([^>]*)/si',
		function($matches) { return '<'.$matches[1].preg_replace('/=(\"|\')(http(s|):)/si','=$1', $matches[2]);	},
		$content
	);
	return $content;
}