Okay so on my site (below) I am using images as the radio buttons.. I want to make those anchor images so when you click them they display larger in a new tab/window but when I do and go back in the browser the css radio checked css doesn't apply the border. For testing purposes I kept the top 3 fabrics images (non anchor) so they show the border when clicked and the bottom anchor images to show you how the css doesn't apply. I was looking to use a lightbox plugin but I am back to this to keep it simple to maybe find a solution easier. Thanks
http://www.customwindowcushions.com/custom-window-seat-cushions/rectangle-window-seat-cushions