after sending e-mail from contact form http://remont-otoplenie.kiev.ua/kontakty.html i've got

<?php
if(substr(basename($_SERVER['PHP_SELF']), 0, 11) == "imEmailForm") {
include '../res/x5engine.php';
$form = new ImForm();
$form->setField('От', $_POST['imObjectForm_2_1'], '', false);
$form->setField('Ваш е-мейл:', $_POST['imObjectForm_2_2'], '', false);
$form->setField('Текст для отправки', $_POST['imObjectForm_2_3'], '', false);

if(@$_POST['action'] != 'check_answer') {
if(!isset($_POST['imJsCheck']) || $_POST['imJsCheck'] != 'jsactive' || (isset($_POST['imSpProt']) && $_POST['imSpProt'] != ""))
die(imPrintJsError());
$form->mailToOwner('***', '***', '', '', false);
@header('Location: ../index.html');
exit();
} else {
echo $form->checkAnswer(@$_POST['id'], @$_POST['answer']) ? 1 : 0;
}
}

// End of file

on the blank page