var imglist = new Array(
<!-- ランダムに画像表示 -->
"./img_flyer/interimshow.jpg",
"./img_flyer/doctor.gif"
);
var selectnum = Math.floor((Math.random() * 100)) % imglist.length;
var output = "<img src=" + imglist[selectnum] + " id=\"img\" name=\"img\" alt=\"Information\" class=\"flyer\" />";
document.write(output);