Werid problem

[Gophers]

Rather then posting in a new thread, i am going to post it here. I been working on my forums and still working on it. want it to be perfect before i open it up.

What is the best way to have the toplinks look like the pic i am going to be post. I found this on a few other sites while searching the net for stuffs to read. But what is the best possible way of doing it. making the toplinks full width of the site and have a like black background. my site width is 990px;

btw here what i use for toplinks in additional.css.

.toplinks {
background: -moz-linear-gradient(center top , #151515 0%, #000 100%) repeat scroll 0% 0% transparent;
position: inherit;
padding: 2px 20px 4px;
right: 0px;
z-index: 999;
margin: 0px -16px;
border-top: 2px solid #101010;
border-bottom: 2px solid #101010;
}

Is their a better way of doing it then that.