Navbar border does not go all the way to end of navbar

In the Navbar, each item is separated by a white border, but the border does not go all the way to the end of the Navbar, leaving a blank space, that you can see here:

http://www.voltrek.com

I picked up the CSS for the border, see directly below, but how do I get that white line/border to be at the end of the Navbar when the navbar items themselves stop in the middle of the navbar?

Thanks.

#suckerfishnav .page_item {
    -moz-border-bottom-colors: none;
    -moz-border-image: none;
    -moz-border-left-colors: none;
    -moz-border-right-colors: none;
    -moz-border-top-colors: none;
    background-image: url("images/voltrek_site_menu_green_slice.png");
    border-color: white;
    border-style: solid;
    border-width: 0 1px;
    width: 120px;
    z-index: 500;