navi a img {border:none;vertical-align: bottom;}
navi a img:hover {opacity: 0;}
navi ul { 
list-style: none;
box-sizing: border-box; 
margin: 0; 
padding: 0; 
border: 0; 
outline: 0;
border-top: solid 1px #003333; 
border-left: solid 1px #003333;
border-right: solid 1px #003333;
}
navi li {border-bottom: solid 1px #003333;background-repeat: no-repeat;}
navi li:nth-of-type(1){background-image: url(images/button_01_over.gif);}
navi li:nth-of-type(2){background-image: url(images/button_02_over.gif);}
navi li:nth-of-type(3){background-image: url(images/button_03_over.gif);}
navi li:nth-of-type(4){background-image: url(images/button_04_over.gif);}
navi li:nth-of-type(5){background-image: url(images/button_12_over.gif);}
navi li:nth-of-type(6){background-image: url(images/button_05_over.gif);}
navi li:nth-of-type(7){background-image: url(images/button_06_over.gif);}
navi li:nth-of-type(8){background-image: url(images/button_07_over.gif);}
navi li:nth-of-type(9){background-image: url(images/button_08_over.gif);}
navi li:nth-of-type(10){background-image: url(images/button_09_over.gif);}
navi li:nth-of-type(11){background-image: url(images/button_10_over.gif);}
navi li:nth-of-type(12){background-image: url(images/button_11_over.gif);}
navi li.chk a {opacity: 0;pointer-events: none;}