The slider works for me, too, BUT ... it took ages for the page to load fully, during which time the images appeared as you describe. So it seems there's a long delay in the script loading, which needs some attention.
The sub nav is a horizontal list with blue links (in the white area).
There doen't appear to be blue links in the second page you linked to (where you said the problem occurs).
Ah, Paul beat me on that point. Yes, the link is presumably the wrong one.)