On menu.css line 20 find the class "ul#cssmw0 li " and add: width: 20%;
Then on line 53 find the class "ul#cssmw0 > li > span > a, ul#cssmw0 > li > span > a:link" and change its width to: width: auto;
also in that same class remove the left and right padding so it will be: padding: 10px 0 6px;
Then on line 1 of menu.css in the class "ul#cssmw0" update the min-width to: min-width:800px;