function changeVat(v){
    document.VatForm.action = document.VatForm.action + "?method=change&v=" + v;
    alert(document.VatForm.action);
    document.VatForm.submit();
}

function changeCurrency(c){
    document.CurrencyForm.action = document.CurrencyForm.action + "?method=change&c=" + c;
    document.CurrencyForm.submit(); 
}