There are scripts for this purpose you know. Anti-leeching scripts. Some run cgi-bin others *.php, *.asp, and vbscript. I don't think I've found one in Java or javascript. It prevents links from being followed unless the click originated from with set parameters (your site.com) If coming from theirsite.com it wouldn't let them access it. There is another script to use in cojunction with that script.