Watch-dragonball.com security threat?

GRR!!! this has happened three times now. i love this site but what the hell? i'm watching an episode and right in the middle of it the parent window that i'm watching the video on abruptly loads an infected site about some fake antivirus program. thank god i'm smart enough to close the browser and not click on anything else and that i have a good antivirus program to be fast enough to block the site before anything happens or my computer would be ruined by now. now i'm a little afraid to go on it. i sent an email to the webmaster about this issue and saying either someone is hacking your site or its being done deliberately. i believe i have the url, my antivirus program made a log of the event and i can see the saved url but im not going to post it. has anyone else encountered this?