central european alphabet listing

[da_marek]

hello! i have this code on my page:

<?
for ($slova = 65; $slova < 91; $slova++) {
    echo "<a href='" . $_SERVER["PHP_SELF"] . "?" . chr($slova) . "'>" . chr($slova) . "</a>&nbsp;&nbsp;";
}
?>

and this works fine but i want to list other letters that aren't in english alphabet (letters from charset 1250 (central european))
is there any way to do that in a very simple way?