form snippet does not refresh page#

"[[~[[*id]]]]" 

[[!SnippetName]]

$modx->makeUrl

<?php

//OPTIONS
//    email = which mail to send to (default: info@athenslindyhop.com)
//    subject = prepend this text to the subject (optional)
//    successMsg = message to print when successfully sent email (Defaul as set below))

//SET VARS
//    $sender = the user must insert that in contact form and i will get this with _Post
$email = $modx->getOption('email',$scriptProperties,'info@athenslindyhop.com');
$successMsg = $modx->getOption('successMsg',$scriptProperties,'<i>Check that the above address is correct, or else we will not be able to contact you back.(If it isn\'t, send us your message again)</i><br><strong>We will get back to you as soon as possible!</strong>');



//Print the contact form
echo '<form method="post" action="'.$modx->makeUrl($modx->resource->get('id'),'','','http').'">';
echo '<p>Your name:<br /><input name="name" /></p>';
echo '<p>Your email:<br /><input name="email" /></p>';
echo '<p class="antispam">Leave this empty:<br /><input name="url" /></p>';
echo '<p>Subject:<br /><input name="subject" /></p>';
echo 'Message:<br><textarea rows="10" cols="25" name="message"></textarea>';
echo '<br><input type="submit" value="Send" />';
echo '</form>';



//insert the antispam css 
$modx->regClientStartupHTMLBlock('<!--Next lines are inserted by contactForm snippet for antispam reasons -->
      <style type="text/css">
      .antispam { display:none;}
      </style>');
      


//Check if the form has been posted or if it's the first time the page has been loaded
if (!isset($_POST['name'])) {return ;}



//Test for validations
$ok = true;
$errorMsg = 'Mail was not sent. Please fix the following error(s):<ul>';
if (empty($_POST['name'])) {$ok = false; $errorMsg .= '<li>Name is empty. Please enter your name.</li>';}
if (!validEmail($_POST["email"])) {$ok = false; $errorMsg .= '<li>The email you entered is not valid. Please make sure it\'s correct so we can answer to you.</li>'; }
if (empty($_POST['message'])) {$ok = false; $errorMsg .= '<li>Message is empty. Did you forget what you wanted to tell us?</li>';}
$errorMsg .= '</ul>';
if (!$ok){return $errorMsg;}


//Send the actual messages
if(isset($_POST['url']) && $_POST['url'] == ''){
      //Send mail to us      
      // Build the text to be sent
      $msg = $_POST["name"].' <'.$_POST["email"].'> wrote:'."\n\n";
      $msg .= $_POST["message"];
      
      //Build headers
      $headers = 'From:'.$_POST["email"] . "\r\n" .
            'Reply-To:'.$_POST["email"]  . "\r\n" ;
      
      // email
      mail( $email,  $subject." ".$_POST["subject"], $msg, $headers);
      
      //Send a copy to the visitor
      // Build the text to be sent
      $msg = "You successfully sent the following message to Athens Lindy Hop.\nThank you for contacting us, we will get back to you as soon as possible.\n\nΣ�είλα�ε ε�ι����� �ο �α�ακά�� μήν�μα ��ο�� Athens Lindy Hop.\n���α�ι��ο�με για �ην ε�ικοιν�νία και θα α�αν�ή�ο�με �ο ��ν�ομ��ε�ο.\n\n---------\nOriginal message: \n\n";
      $msg .= $_POST["name"].' <'.$_POST["email"].'> wrote:'."\n\n";
      $msg .= '> '.str_replace("\n", "\n> ", $_POST["message"]);
      
      //Build headers
      $headers = 'From:noreply@athenslindyhop.com' . "\r\n" .
            'Reply-To:noreply@athenslindyhop.com'  . "\r\n" ;
      
      // email
      mail( $_POST['email'],  "Message sent to Athens Lindy Hop", $msg, $headers);
      
      
      //Display a confirmation message on screen
      return '<p style="font-size:larger"> <span style="color: green"> Message successfully sent from:</span> <b>'.$_POST['email'].'</b></p>'.$successMsg;
      
     
      
}


/**
Validate an email address.
Provide email address (raw input)
Returns true if the email address has the email 
address format and the domain exists.
*/
function validEmail($email)
{
   $isValid = true;
   $atIndex = strrpos($email, "@");
   if (is_bool($atIndex) && !$atIndex)
   {
      $isValid = false;
   }
   else
   {
      $domain = substr($email, $atIndex+1);
      $local = substr($email, 0, $atIndex);
      $localLen = strlen($local);
      $domainLen = strlen($domain);
      if ($localLen < 1 || $localLen > 64)
      {
         // local part length exceeded
         $isValid = false;
      }
      else if ($domainLen < 1 || $domainLen > 255)
      {
         // domain part length exceeded
         $isValid = false;
      }
      else if ($local[0] == '.' || $local[$localLen-1] == '.')
      {
         // local part starts or ends with '.'
         $isValid = false;
      }
      else if (preg_match('/\\.\\./', $local))
      {
         // local part has two consecutive dots
         $isValid = false;
      }
      else if (!preg_match('/^[A-Za-z0-9\\-\\.]+$/', $domain))
      {
         // character not valid in domain part
         $isValid = false;
      }
      else if (preg_match('/\\.\\./', $domain))
      {
         // domain part has two consecutive dots
         $isValid = false;
      }
      else if
(!preg_match('/^(\\\\.|[A-Za-z0-9!#%&`_=\\/$\'*+?^{}|~.-])+$/',
                 str_replace("\\\\","",$local)))
      {
         // character not valid in local part unless 
         // local part is quoted
         if (!preg_match('/^"(\\\\"|[^"])+"$/',
             str_replace("\\\\","",$local)))
         {
            $isValid = false;
         }
      }
      if ($isValid && !(checkdnsrr($domain,"MX") || 
 �checkdnsrr($domain,"A")))
      {
         // domain not found in DNS
         $isValid = false;
      }
   }
   return $isValid;
}