Website Gets Redirected

it appears to me hacked.

It could be your theme as some (evil, dodgy, horrible) sites modify and distribute themes with that fake jquery site in it.

If it is hacked then you need to start working your way through these resources:http://codex.wordpress.org/FAQ_My_site_was_hacked
http://wordpress.org/support/topic/268083#post-1065779
http://smackdown.blogsblogsblogs.com/2008/06/24/how-to-completely-clean-your-hacked-wordpress-installation/
http://ottopress.com/2009/hacked-wordpress-backdoors/

Additional Resources:
http://sitecheck.sucuri.net/scanner/
http://www.unmaskparasites.com/
http://blog.sucuri.net/2012/03/wordpress-understanding-its-true-vulnerability.html
http://codex.wordpress.org/Hardening_WordPress
http://www.studiopress.com/tips/wordpress-site-security.htm