PHP forum question

Hi,

I'm just trying to get a PHP forum to work on a site, quite new to php. With IE the forum looks fine but when I click submit I get a page not found error, in Firefox the page just shows the php code.

Is there something obvious wrong with the code or is it the server ?

Thanks

(I am running this from a server with PHP)



<div class="form">

<?php

/**
* $empty_fields_message and $thankyou_message can be changed
* if you wish.
*/

// Change to your own email address
$your_email = "mail@mailserver.ie";

// This is what is displayed in the email subject line
// Change it if you want
$subject = "Message via your contact form";

// This is displayed if all the fields are not filled in
$empty_fields_message = "<p>Please go back and complete all the fields in the form.</p>";

// This is displayed when the email has been sent
$thankyou_message = "<p>Thankyou. Your message has been sent.</p>";

// You do not need to edit below this line

$name = stripslashes($_POST);
$email = stripslashes($_POST);
$message = stripslashes($_POST);

if (!isset($_POST)) {

?>
<form method="post" action="<?php echo $_SERVER; ?>">

<p><label for="txtName">Name:</label><br />
<input type="text" title="Enter your name" name="txtName" /></p>

<p><label for="txtEmail">Email Address:</label><br />
<input type="text" title="Enter your email address" name="txtEmail" /></p>

<p>
<label for="txtMessage">Your Query:</label><br />
<textarea title="Enter your message" name="txtMessage"></textarea></p>

<p><label title="Send your message">
<input type="submit" value="Send" /></label></p>
</form>

<?php

}

elseif (empty($name) || empty($email) || empty($message)) {

echo $empty_fields_message;

}

else {

// Stop the form being used from an external URL
// Get the referring URL
$referer = $_SERVER;
// Get the URL of this page
$this_url = "http://".$_SERVER.$_SERVER["REQUEST_URI"];
// If the referring URL and the URL of this page don't match then
// display a message and don't send the email.
if ($referer != $this_url) {
echo "You do not have permission to use this script from another URL.";
exit;
}

// The URLs matched so send the email
mail($your_email, $subject, $message, "From: $name <$email>");

// Display the thankyou message
echo $thankyou_message;

}

?>
</div>