function load_customer(customer_id){
    params = 'customer_id='+customer_id;
    new Ajax.Updater('customer', 'ajax_customers.php', {method:'GET', parameters:params});
}

function send_message(){
    $('contact_result').innerHTML = '';
    params = 'message='+$('message').value;
    params += '&name='+$('name').value;
    params += '&mail='+$('mail').value;
    params += '&phone='+$('phone').value;
    new Ajax.Updater('contact_result', 'ajax_contact.php', {method:'GET', parameters:params});
}