Why does Safari keep blocking Java even after changing security settings?

I am trying to run Java on a website in Safari.

I set my security settings to run Java and to allow Java to run on the website (http://onlinestatbook.com/) (see photos).

When I try to run Java on the website, I get the following error message from the Java Applet:

Any suggestions on how to get Java to run on this website would be awesome.

Thanks in advance,

-Bobby