<!-----------------------------------
var back= "";
var max = 2; //イメージの数 現在は2件
var ran = Math.ceil(Math.random()*max);
if(ran == 1) back = "<a href='js/ad/ad01.html' target='_blank' ><img src='images/new/img450-55.gif' alt='イオスコーポレーション' width='450' height='55' alt='' /></a>";
if(ran == 2) back = "<a href='js/ad/ad02.html' target='_blank' ><IMG SRC='images/new/bantec_banner.png' width='450' height='55' alt='' /></a>";
document.write("");
document.write(back);
//----------------------------------->

