Options +FollowSymlinks
RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?venus.co.uk(/)?.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://(www\.)?193.243.229.75(/)?.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://(www\.)?alt.venus.co.uk(/)?.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://(www\.)?193.243.229.53(/)?.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://(www\.)?wussu.com(/)?.*$     [NC]
RewriteCond %{HTTP_REFERER} !^http://(www\.)?64.202.163.178(/)?.*$     [NC]
RewriteRule .*\.(gif|jpg|jpeg|bmp|png)$ - [F,NC]