// ランダムに画像を表示する
img = new Array();
img[0] = "_pages/index/img/img0.jpg";
img[1] = "_pages/index/img/img1.jpg";
img[2] = "_pages/index/img/img2.jpg";
img[3] = "_pages/index/img/img3.jpg";
n = Math.floor(Math.random()*img.length);
document.write("<img src='"+img[n]+"' usemap='#Map'>");