Nefunguje fulltext

CREATE TABLE `users` (
  `id` int(7) NOT NULL auto_increment,
  `nick` varchar(25) collate utf8_czech_ci NOT NULL,
  `pass` text collate utf8_czech_ci NOT NULL,
  `law` int(2) NOT NULL default '0',
  `mail` varchar(60) collate utf8_czech_ci NOT NULL,
  `sex` int(1) NOT NULL default '0',
  PRIMARY KEY  (`id`),
  UNIQUE KEY `nick` (`nick`),
  FULLTEXT KEY `nick_f` (`nick`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_czech_ci AUTO_INCREMENT=1 ;

<form name="search" method="post">
<label for="search" style="color: #939393; font-weight:bold;">Uživatel:&nbsp;</label> <input type="text" id="search" name="nick" style=" font-weight:bold;border: 1px solid #939393; color: #B3B3B3; width:150px;" />
<input type="submit" value="Najdi uživatele" name="search" style=" color: #939393; font-weight:bold; padding:0; margin:0; border:0 none; background:transparent;">
</form>

<?php
if($_POST['search']){
require "config.php";
$result = $join_db->query("
    select nick from users
where match (`nick`) against ('".$_POST['nick']."') 
");
while($offer = $result->fetch_array()){
echo $offer[0];
}
}
?>