RewriteEngine on
RewriteCond %{HTTP_REFERER} !^http://zephyrxt.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://zephyrxt.com$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.zephyrxt.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.zephyrxt.com$ [NC]
RewriteRule .*.(jpg|jpeg|gif|png|bmp|rar|zip|exe)$http://zephyrxt.com/10k.jpg[R,NC]