Nav/Menu Bar problems

[Muzza]

Hi

My Website is www.waterfuelcell.org, I think I have screwed something up?......It was working fine online until I shifted a few files around and updated a few pages.

as you can probably see the Nav/Menu Bar has Disappeared?......

see this link to view the Nav/Menu Bar at the top of the page as it was seen before on the web before I screwed it up

http://www.waterfuelcell.org/sitepic.gif

It appears to be working alright in frontpage but when I upload it, it doesnt want to apear.

any help will be greatly appreciated. I will not let it go unrewarded as I need this fixed ASAP.

Murray