<!-- 

if (document.images) { 


// navi01
var img1on = new Image();
img1on.src = "images/ind_btn01_on.jpg";
var img1off = new Image();
img1off.src = "images/ind_btn01.jpg";

// navi02 
var img2on = new Image();
img2on.src = "images/ind_btn02_on.jpg";
var img2off = new Image();
img2off.src = "images/ind_btn02.jpg";

// navi03 
var img3on = new Image();
img3on.src = "images/ind_btn03_on.jpg";
var img3off = new Image();
img3off.src = "images/ind_btn03.jpg";

// navi04 
var img4on = new Image();
img4on.src = "images/ind_btn04_on.jpg";
var img4off = new Image();
img4off.src = "images/ind_btn04.jpg";

// navi05
var img5on = new Image();
img5on.src = "images/ind_btn05_on.jpg";
var img5off = new Image();
img5off.src = "images/ind_btn05.jpg";

// link01
var link01on = new Image();
link01on.src = "images/link_btn01_on.jpg";
var link01off = new Image();
link01off.src = "images/link_btn01.jpg";

// link02
var link02on = new Image();
link02on.src = "images/link_btn02_on.jpg";
var link02off = new Image();
link02off.src = "images/link_btn02.jpg";

// link03
var link03on = new Image();
link03on.src = "images/link_btn03_on.jpg";
var link03off = new Image();
link03off.src = "images/link_btn03.jpg";

// link04
var link04on = new Image();
link04on.src = "images/link_btn04_on.jpg";
var link04off = new Image();
link04off.src = "images/link_btn04.jpg";

} 

function On(name) { 

if (document.images) { 
document.images[name].src = eval(name + 'on.src'); 
} 

} 

function Off(name) { 

if (document.images) { 
document.images[name].src = eval(name + 'off.src'); 
} 

} 

// -->