#nav ul li a {display: block;
float: left;
height: 40px;
text-indent: -9999px;
overflow:hidden;
background-image: url(../images/menu.jpg);
}
li#nav01 a { width: 140px; background-position: 0 -40px; }
li#nav01 a:hover { background-position: 0 0;}
li#nav02 a { width: 140px; background-position: -140px -40px; }
li#nav02 a:hover { background-position: -140px 0;}
li#nav03 a { width: 140px; background-position: -280px -40px; }
li#nav03 a:hover { background-position: -280px 0;}
li#nav04 a { width: 140px; background-position: -420px -40px; }
li#nav04 a:hover { background-position: -420px 0;}
li#nav05 a { width: 140px; background-position: -560px -40px; }
li#nav05 a:hover { background-position: -560px 0;}
li#nav06 a { width: 140px; background-position: -700px -40px; }
li#nav06 a:hover { background-position: -700px 0;}

li#nav01on a { width: 140px; background-position: 0 40px; }
li#nav02on a { width: 140px; background-position: -140px 40px; }
li#nav03on a { width: 140px; background-position: -280px 40px; }
li#nav04on a { width: 140px; background-position: -420px 40px; }
li#nav05on a { width: 140px; background-position: -560px 40px; }
li#nav06on a { width: 140px; background-position: -700px 40px; }