click23,
$col_dn = mysql_result(mysql_query("SELECT COUNT(*) FROM `dnevniki` WHERE `dnid` = 'txt' AND `userid` = '" . $user['id'] . "' "), 0);
echo '<img src="/images/str.gif" /> <a href="/dnevniki/?act=showdn&id=' . $user['id'] . '">Дневник</a> (' . $col_dn . ')';