CSS based menu script

Hi Guys,

Hope you can help me with a CSS query. I have a CSS based dropdown menu with custom stylings.

[link removed - problem fixed]

I want the top level of the navigation to fit the 100% of the 840px. The each of the top level items to occupy a width of 140px so that it aligns with the image above it. The 2nd and 3rd level items can be as wide as they may need to be. Any help appreciated. There is currently some right padding on the top level which we may have to remove. Each of the top level links should occupy a 140px by 16px block.

Thanks,