Problem with back button / Hiding

Problem with back button / Hiding

I start of by mousing over one of the homepage image buttons, the opacity changes and a descriptor shows up to the top right. I click on that page . So far so good. But when I hit the back button on the browser, the image is still faded, and the text is still there... How do I make it so going back "resets" the page.

Hope that makes sense here is the beta link..

http://dph.begincreative.com/index.php