RewriteEngine on
RewriteCond %{HTTP_REFERER} !^http://(www\.)?siteninadi.com(/)?.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://(www\.)?siteninadi.com(/)?.*$ [NC]
RewriteRule .*\.(gif|jpg|jpeg|bmp|zip|avi|rar|mpeg|mpg|wmv|asf |mov|exe|pdf)$ http://www.siteninadi.com/][R,NC]