Problems with the POST method. Please help!

I need to post the variables to validate the user of this page... I want to pass them to the index.php, wich will tell to wich page the validation should be passed.
I used the post method (if (isset($_POST["section"]) && $_POST["section"] != ""){include 'sources/' . $_POST["section"] . '.php'} to come to this page (the listing bellow).
-------------------------login.php--------------------------
{insert name=header content="Content-Type: text/vnd.wap.wml"}
<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.3//EN" "http://www.wapforum.org/DTD/wml13.dtd" >
<wml>
{include file="meta.tpl"}
<card id="main" title="Prijavni obrazac">
<onevent type="onenterforward">
<refresh>
<setvar name="in_br_indeksa" value=""/>
<setvar name="in_lozinka" value=""/>
<setvar name="br_indeksa" value=""/>
<setvar name="lozinka" value=""/>
<setvar name="section" value="" />
</refresh>
</onevent>
<p>
Br. indeksa: <input type="text" name="in_br_indeksa" /><br />
Lozinka: <input type="password" name="in_lozinka" /><br />
<anchor>
<go href="index.php" method="post">
<postfield name="br_indeksa" value="$in_br_indeksa" />
<postfield name="lozinka" value="$in_lozinka" />
<postfield name="section" value="validate" />
</go>
Prijava
</anchor>
</p>
</card>
</wml>
------------------------------------------------------------
When I follow the link (anchor "prijava") my browser stands still.

Does anybody have a clue?
Thanx in advance.

You would more than likely have better luck with this post if you put it in the PHP forum...