Access-Control-Allow-Origin: http://yourdomain-you-are-connecting-from.com
on target server
in php:
header("Access-Control-Allow-Origin: http://yourdomain-you-are-connecting-from.com");
in case you don’t want to use server-scripting language: put this in (linux) console
a2enmod headers
and to your .htaccess file add
Header set Access-Control-Allow-Origin: http://yourdomain-you-are-connecting-from.com