Wierd CSS 'Transparancy'

[Freakish_05]

Afternoon all.

I'm having a little trouble with a navbar on a project. Have a play with it Here and you'll see what I mean.

I've copied all the code into a text file if you want to take a gander Linky Linky

Any idea what could be causing this and how I can fix it?

Cheers.

Edit: Fixed with Z-Index

 

[Freakish_05]

LMFAO

Don't blame me....the customer chose the colour scheme