//修了生のバナー画像をランダムに表示


var imglist = new Array(
"./img/top_voice1.jpg",
"./img/top_voice2.jpg",
"./img/top_voice3.jpg",
"./img/top_voice4.jpg",
"./img/top_voice5.jpg",
"./img/top_voice6.jpg",
"./img/top_voice7.jpg",
"./img/top_voice8.jpg",
"./img/top_voice9.jpg",
"./img/top_voice10.jpg",
"./img/top_voice11.jpg" );
var selectnum = Math.floor((Math.random() * 100)) % imglist.length;
var output = "<img src=" + imglist[selectnum] + ">";
document.write(output);