画像の先読みこます

<script>

image = new Image();
image.src = "img/top/jc_top2-02.jpg";
image.src = "img/top/jc_top2-07.jpg";
image.src = "img/top/jc_top2-06.jpg";
image.src = "img/menu_put-01_on.jpg";
image.src = "img/menu_put-02_on.jpg";
image.src = "img/menu_put-03_on.jpg";
image.src = "img/menu_put-04_on.jpg";
image.src = "img/menu_put-05_on.jpg";
image.src = "img/top/jc_top2-02.jpg";

</script>

</head>