Can't click in center. Probably Prev and Next arrows are to blame.

[IamAlta]

See the "Re-styled Thumbnail Demo" (bottom right) on the home page for this,
http://ekallevig.com/jshowoff/

Put your cursor at the top middle and you can can click. Slide the cursor to the middle and there is no click available.

This is a problem because our linked slides are small and there is not much clickable area above and below the prev and next arrows. Besides, most people would click in the middle of the slide.

Can you tell me how to fix that?

Thank you!