New Java update won't let me run site!?

My Java just had asked me if I wanted to update it so I did and now, the gamesite I go to called Pogo.com gives me this message when trying to open a game : Applet(s) in this HTML page requires a version of java different from the one the browser is currently using. In order to run the applet(s) in this HTML page, a new browser session is required. Close all the netscape browser sessions and start a new browser session to run the HTML page. So I say yes and it will not work!! What can I do? I wish i wouldn't have updated now ughh :(