var ads = new Array();



//バナー1
ads[ads.length] = '<table width="200" border="0" cellspacing="0" cellpadding="0"><tr><td width="200" rowspan="0">'+
'<a href="../../../cgi-bin/banner_counter/bcvc.cgi?act=c&id=teichiku" target="_blank">'+//　URL
'<img src="../../../cgi-bin/banner_counter/bcvc.cgi?act=n&id=teichiku" width="200" height="100" border="0" /></a></td></tr></table>';//　画像

//バナー2
ads[ads.length] = '<table width="200" border="0" cellspacing="0" cellpadding="0"><tr><td width="200" rowspan="0">'+
'<a href="../../../cgi-bin/banner_counter/bcvc.cgi?act=c&id=atmall" target="_blank">'+//　URL
'<img src="../../../cgi-bin/banner_counter/bcvc.cgi?act=n&id=atmall" width="200" height="100" border="0" /></a></td></tr></table>';//　画像

//バナー3
ads[ads.length] = '<table width="200" border="0" cellspacing="0" cellpadding="0"><tr><td width="200" rowspan="0">'+
'<a href="../../../cgi-bin/banner_counter/bcvc.cgi?act=c&id=stage_gate" target="_blank">'+//　URL
'<img src="../../../cgi-bin/banner_counter/bcvc.cgi?act=n&id=stage_gate" width="200" height="100" border="0" /></a></td></tr></table>';//　画像


//バナー4
ads[ads.length] = '<table width="200" border="0" cellspacing="0" cellpadding="0"><tr><td width="200" rowspan="0">'+
'<a href="../../../cgi-bin/banner_counter/bcvc.cgi?act=c&id=npo_ikasu" target="_blank">'+//　URL
'<img src="../../../cgi-bin/banner_counter/bcvc.cgi?act=n&id=npo_ikasu" width="200" height="100" border="0" /></a></td></tr></table>';//　画像






//バナーの増減があった場合、for文を修正して下さい
function write_ad() {
  shuffle(ads);
  for (var i = 0; i < 4; i++) {
    document.write(ads[i], "<br>");
  }
}

function shuffle(array) {
  for (var i = array.length; --i; ) {
    var r = Math.floor(Math.random() * (i+1));
    if (r != i) {
      var tmp = array[i];
      array[i] = array[r];
      array[r] = tmp;
    }
  }
}

write_ad();
