When I use this script:

PHP Code:
<?php
if (!isset($_COOKIE['loggedin'])) die("Welcome bezoeker! <a href=register.html>register</a> <a href=login.html >login</a>");
$mysite_username = $HTTP_COOKIE_VARS["mysite_username"];
echo "Welcome $mysite_username! <a href=logout.php>logout</a>";
?>
My page shows "welcome bezoeker" and the links but after that the whole page is gone so I think that I use it wrong is
Who know what I do wrong