PHP / JS help please..

Morning All,

This is driving me mad but I'm pretty sure someone who knows what they are doing will spot the mistake easily. I can handle HTML and CSS but JS & PHP elude me..

I have downloaded a template CSS website which has a contact form on it that I cannot get working..

The contact page is here - Fencing Essex

Then I found out I needed a PHP page to handle the request to get it to email to me. So I downloaded and adjusted this -

<?php
if(isset($_POST['email'])) {

// EDIT THE 2 LINES BELOW AS REQUIRED
$email_to = "sales@collinsonfencing.com";
$email_subject = "Your email subject line";


function died($error) {
// your error code can go here
echo "We are very sorry, but there were error(s) found with the form you submitted. ";
echo "These errors appear below.<br /><br />";
echo $error."<br /><br />";
echo "Please go back and fix these errors.<br /><br />";
die();
}

// validation expected data exists
if(!isset($_POST['author']) ||
!isset($_POST['email']) ||
!isset($_POST['text'])) {
died('We are sorry, but there appears to be a problem with the form you submitted.');
}

$author = $_POST['author']; // required
$email_from = $_POST['email']; // required
$text = $_POST['text']; // required

$error_message = "";
$email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';
if(!preg_match($email_exp,$email_from)) {
$error_message .= 'The Email Address you entered does not appear to be valid.<br />';
}
$string_exp = "/^[A-Za-z .'-]+$/";
if(!preg_match($string_exp,$author)) {
$error_message .= 'The Name you entered does not appear to be valid.<br />';
}
if(strlen($text) < 2) {
$error_message .= 'The Message you entered do not appear to be valid.<br />';
}
if(strlen($error_message) > 0) {
died($error_message);
}
$email_message = "Form details below.\n\n";

function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:","href");
return str_replace($bad,"",$string);
}

$email_message .= "Name: ".clean_string($author)."\n";
$email_message .= "Email: ".clean_string($email)."\n";
$email_message .= "Comments: ".clean_string($text)."\n";


// create email headers
$headers = 'From: '.$email."\r\n".
'Reply-To: '.$email."\r\n" .
'X-Mailer: PHP/' . phpversion();
@mail($email_to, $email_subject, $email_message, $headers);
?>

<!-- include your own success html here -->

Thank you for contacting us. We will be in touch with you very soon.

<?php
}
?>

If I go onto it and send a message I get the success html page but no email appears in my inbox....

Any ideas please??

Cheers

Steve