function updatePayments() {
    var url = baseRSPath+'/ajax.php';
    var params = 'task=paymentOptions&shipping=' + $('#shipping').val();
    $.get(url, params, function(data) {
        $("#payment").html(data);
    });
}

function updateTowns() {
    var url = baseRSPath+'/ajax.php';
    var params = 'task=townsForRegion&region=' + $('#rs_region').val();
    $.get(url, params, function(data) {
        $("#rs_town").html(data);
    });
}