Lightbox not working

Every time i add a product to my cart the light box that says "continue or checkout" and my "terms of services" box open in the entire screen. I have tried everything in the admin that could be having conflict. The only thing i did different was trying the magic zoom module but i already unistalled it and still doing it.

Thanks for solving it to me. It was actually an Anty-copy plugin on my site that was set up to not allow site framing so it messed up those particular lightboxes. I did change it to allow, and now it works fine!