if (document.images) { 

// 画像1 
var img0on = new Image();
img0on.src = "img/top1.jpg";
var img0off = new Image();
img0off.src = "img/top0.jpg";

var img1on = new Image();
img1on.src = "img/mixi1.jpg";
var img1off = new Image();
img1off.src = "img/mixi0.jpg";

var img2on = new Image();
img2on.src = "img/about1.jpg";
var img2off = new Image();
img2off.src = "img/about0.jpg";

var img3on = new Image();
img3on.src = "img/illust1.jpg";
var img3off = new Image();
img3off.src = "img/illust0.jpg";

var img4on = new Image();
img4on.src = "img/solid1.jpg";
var img4off = new Image();
img4off.src = "img/solid0.jpg";

var img5on = new Image();
img5on.src = "img/link1.jpg";
var img5off = new Image();
img5off.src = "img/link0.jpg";

var img6on = new Image();
img6on.src = "img/circle1.jpg";
var img6off = new Image();
img6off.src = "img/circle0.jpg";


} 

// ポイント時の処理 
function On(name) { 

if (document.images) { 
document.images[name].src = eval(name + 'on.src'); 
} 

} 

// 放した時の処理 
function Off(name) { 

if (document.images) { 
document.images[name].src = eval(name + 'off.src'); 
} 

}