The web site is here.
See that blue bar behind the menu items? It's 40 pixels high and one pixel wide, and used as a repeating background - so, why does it look strange after the right-most menu item?
The image is here, if anyone needs it.
The image is used thusly:
.menu_bar
{
background-image: url("http://leonixsolutions.com/images/menu_background.jpg");
background-repeat: repeat-x;
font-size: large;
padding-left: 160px;
padding-top: 5px;
text-align: center;
}