как вывести случайный сайт на главную?

CREATE TABLE IF NOT EXISTS `sites` (
  `id` int(9) NOT NULL AUTO_INCREMENT,
  `id_cat` int(9) NOT NULL,
  `url` varchar(255) NOT NULL,
  `name` varchar(255) NOT NULL,
  `about` text NOT NULL,
  `type` enum('0','1') NOT NULL,
  `date` int(11) NOT NULL,
  `count` int(9) NOT NULL,
  `rate` int(11) NOT NULL,
  `ip` bigint(11) NOT NULL,
  `browser` tinytext NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=991 ; 

 echo "<div class='nav1'>" ; echo "<center><b>Случайные Фото</b></ center>"; $q2 = mysql_query ("SELECT * FROM `gallery_foto` WHERE `metka`='0' ORDER BY rand() DESC LIMIT 4"); echo "<center>"; while ($foto = mysql_fetch_assoc($q2)){ $gallery = mysql_fetch_assoc(mysql_query ("SELECT * FROM `gallery` WHERE `id` = ' $foto [id_gallery]' limit 1"));$ank = get_user($foto ['id_user']); echo "<a href='/foto/$ank[id]/$gallery[id]/$foto [id]/'><img src='/foto/foto50/$foto[id].$foto [ras]' alt='*'/></a>"; }
echo "</center>"; echo "</div>";