The links at the top don't work because you have gone overboard on the use of absolute, relative positioning (and using tables for layout!) and there is something sitting above the links preventing them from being clickable.
Ever wanted to see your page from the computer's perspective? But the attached image won't help you fix your page.
"I'm here to save your life. But if I'm going to do that, I'll need total uninanonynymity
." Me Myself & Irene
Validate your HTML