var quotes = new Array;

quotes.push("<center><a target=_blank href=http://www.diendantinhoc.com>Vietnamese IT</a></center>");

quotes.push("<center><a target=_blank href=http://www.vinatop.com/contact.php>Liên hệ quảng cáo</a></center>");
quotes.push("<center><a target=_blank href=http://www.vinatop.com/contact.php>Liên hệ quảng cáo</a></center>");
quotes.push("<center><a target=_blank href=http://www.vinatop.com/contact.php>Liên hệ quảng cáo</a></center>");
quotes.push("<center><a target=_blank href=http://www.vinatop.com/contact.php>Liên hệ quảng cáo</a></center>");

quotes.push("<center><a target=_blank href=http://www.b2btop.com>B2B Marketplace</a></center>");

document.write(quotes[(Math.floor(Math.random() * quotes.length))]);