<!--
ranimg = new Array();
ranimg[0] = "http://www.youyou.co.jp/images/crebn.gif";
ranimg[1] = "http://www.youyou.co.jp/images/eikou.gif";
ranimg[2] = "http://www.youyou.co.jp/images/banner/kaiteki1.jpg";
ranimg[3] = "http://www.youyou.co.jp/images/banner/kaiteki2.jpg";
ranimg[4] = "http://www.youyou.co.jp/images/banner/kaiteki3.jpg";

ranurl = new Array();
ranurl[0] = "http://www.crears.net/";
ranurl[1] = "http://www.eikou.com/";
ranurl[2] = "http://www.youclub.jp/";
ranurl[3] = "http://www.youclub.jp/";
ranurl[4] = "http://www.youclub.jp/";

chip = Math.floor(ranurl.length * Math.random());
document.write('<a href="'+ ranurl[chip] +'" target="_blank"><img src="'+ 
ranimg[chip] +'" border="0"></a>');
// -->