Topic: Moving Image hit area to my own buttons

I have a site design that I love and need only to move the image next and previous hit areas to over my arrow images at the bottom right instead of on the image itself like it is now. 
Please help Felix or anyone...
Here's an example
I have an example of it but the forum won't allow me to post a link.

seangreenephotography dot com backslash new

Any help is greatly appreciated