Advanced poll Fatal Error

I made a poll with Advanced poll on my computer, and it worked well. So I want to set it on my internetpage (www.nuttelozeinformatie.nl)

But when I want to open it (http://www.nuttelozeinformatie.nl/vote/db/simpel.php)

I get the following message:
"Fatal error: Call to a member function on a non-object in /home/httpd/vhosts/nuttelozeinformatie.nl/httpdocs/vote/db/simpel.php on line 9"

The code of simpel.php is:

<?php
include_once "http://www.nuttelozeinformatie.nl/vote/db/poll_cookie.php";
?>

<html>
<body>
<?php
include_once "http://www.nuttelozeinformatie.nl/vote/db/booth.php";
echo $php_poll->poll_process(4);
?>
</body>
</html>

Can someone help me with what is wrong??????

try this

/home/httpd/vhosts/nuttelozeinformatie.nl/httpdocs/vote/db/

I mean

<?php
include_once "/home/httpd/vhosts/nuttelozeinformatie.nl/httpdocs/vote/db/poll_cookie.php";
?>

<html>
<body>
<?php
include_once "/home/httpd/vhosts/nuttelozeinformatie.nl/httpdocs/vote/db/booth.php";
echo $php_poll->poll_process(4);