var bill_name      = "";
var bill_company   = "";
var bill_address   = "";
var bill_city      = "";
var bill_state     = "";
var bill_zip       = "";
var bill_country   = "";
var bill_phone     = "";

function InitSaveVariables(form) {
bill_name      = form.bill_name.value;
bill_company   = form.bill_company.value;
bill_address   = form.bill_address.value;
bill_city      = form.bill_city.value;
bill_state     = form.bill_state.value;
bill_zip       = form.bill_zip.value;
bill_country   = form.bill_country.value;
bill_phone     = form.bill_phone.value;
}

function ShippingToBilling(form) {
if (form.copy.checked) {
InitSaveVariables(form);
form.bill_name.value          = form.ship_name.value;
form.bill_company.value       = form.ship_company.value;
form.bill_address.value       = form.ship_address.value;
form.bill_city.value          = form.ship_city.value;
form.bill_state.value         = form.ship_state.value;
form.bill_zip.value           = form.ship_zip.value;
form.bill_country.value       = form.ship_country.value;
form.bill_phone.value         = form.ship_phone.value;
}
else {
form.bill_name.value          = bill_name;
form.bill_company.value       = bill_company;
form.bill_address.value       = bill_address;
form.bill_city.value          = bill_city;
form.bill_state.value         = bill_state;
form.bill_zip.value           = bill_zip;
form.bill_country.value       = bill_country;
form.bill_phone.value         = bill_phone;
   }
}