function shipsame(form){

if(form.sameship.checked){

     form.bill_address1.value = form.ship_address1.value;
     form.bill_address2.value = form.ship_address2.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;
}
else{
     form.bill_address1.value = "";
     form.bill_address2.value = "";
     form.bill_city.value = "";
     form.bill_state.value = "";
     form.bill_zip.value = "";
}
}