The site does come up, but redirects to somewhere else. Before it does, this can be seen at the top of the browser window:
Warning: Cannot modify header information - headers already sent by (output started at /home/cougar/public_html/config.php:763) in /home/cougar/public_html/system/lib-sessions.php on line 188
Warning: Cannot modify header information - headers already sent by (output started at /home/cougar/public_html/config.php:763) in /home/cougar/public_html/system/lib-sessions.php on line 200
My guess is that someone modifed lib-sessions.php and inserted some code there that does the redirect.
So, first step, replace lib-sessions.php with the original version. That should hopefully fix that.
Next step, upgrade that site to the lasted 1.3.11 version. It's on 1.3.11sr1, apparently, and that version is known to have security issues.
And after that, password-protect the system, plugins, logs, and all the other directories that should not have been in public_html in the first place ...
bye, Dirk