<IfModule mod_headers.c>
    Header set Access-Control-Allow-Origin "*"
</IfModule>

RewriteEngine on    
RewriteCond %{HTTP_REFERER} !^http://(www\.)?mydomain.com [NC]    
RewriteCond %{HTTP_REFERER} !^http://(www\.)?mydomain.com.*$ [NC]    
RewriteRule \.(js)$ - [F]  