im having a similar problem on needing to know how to manipulate the position and size of the hit areas.  No one seems to know where in the code that can be changed

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