var iadA = new Array(
'<embed type="application/x-shockwave-flash" width="500" height="80" src="/site_media/images/ad/500x80_35friend.swf" wmode="transparent">',
'<embed type="application/x-shockwave-flash" width="500" height="80" src="/site_media/images/ad/500x80_JPOKI.swf" wmode="transparent">',
'<embed type="application/x-shockwave-flash" width="500" height="80" src="/site_media/images/ad/500x80_kansai1.swf" wmode="transparent">'
);
index = Math.floor(Math.random() * iadA.length)
document.write(iadA[index])