function processForm()
{
    $('submit').disabled = true;
    $('submit').value = "Prosím čakajte...";

    $('contact_form').request(
    {
        onSuccess: function(transport)
        {
            if(transport.responseText.match(/^OK/) != null) 
            {
                slidedown('msg');
                slideup('err');
                $('contact_form').reset();
            } 
            else 
            {
                slideup('msg');
                slidedown('err');
                document.getElementById('err').innerHTML = transport.responseText;
            }

            $('submit').value = 'Poslať';
            $('submit').disabled = false;
        }
    });

    document.getElementById('cptimg').src = '../engine/extmod/securimage/securimage_show.php';
    return false;
}