nao to conseguindo deletar um cookie

Galera ele nao deleta meu cookie alguem sabe pq? eu nao sie mais oq fazer

PHP [/tr][tr]<?php ob_start(); ?>

<?

$valor = "maçã";

$valor2 = "uva";

$valor3 = "laranja";

 

setcookie("Henrique", "$valor", time() +86400);

setcookie("Henrique2", "$valor2", time() +86400);

setcookie("Henrique3", "$valor3", time() +86400);

 

$mostra= $_COOKIE['Henrique'];

$mostra2= $_COOKIE['Henrique2'];

$mostra3= $_COOKIE['Henrique3'];

 

echo"<table width=\"75%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">

 <tr>

 <td width=\"53%\">"

.$mostra."</td> <td width=\"47%\"><a href=\""

.$PHP_SELF."?cokie=Henrique\">deletar</a></td> </tr>

 <tr>

 <td>"

.$mostra2."</td> <td width=\"47%\"><a href=\""

.$PHP_SELF."?cokie=Henrique2\">deletar</a></td> </tr>

 <tr>

 <td height=\"19\">"

.$mostra3."</td> <td width=\"47%\"><a href=\""

.$PHP_SELF."?cokie=Henrique3\">deletar</a></td> </tr>

</table>

"

;?>

 <?

 

$cokie = $_GET['cokie'];

 

setcookie("$cokie", "", time() -86400);

 

 

?>

<?php ob_end_flush(); ?>

[/tr]