function mainPHOTO()
{
// ランダムに画像を表示する
img = new Array();
img[0] = "http://www.office-saku.com/ryuheimatsuda/top01.jpg";
img[1] = "http://www.office-saku.com/ryuheimatsuda/top02.jpg";
img[2] = "http://www.office-saku.com/ryuheimatsuda/top03.jpg";
//img[3] = "http://www.office-saku.com/ryuheimatsuda/top00.jpg";
//img[4] = "http://www.office-saku.com/ryuheimatsuda/top00.jpg";
n = Math.floor(Math.random()*img.length);
document.write("<img src='"+img[n]+"' border='0'>");
}