[PhilJ]

Backup files first. Code works for me in v4.0.5

I've not tested it with a drop down menu for states/counties, but it should work ok.

I use an input box for the state/county field. When I change country, it resets the state field, but I can live with that.

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1) Create a new file in the skin1 directory called copybilling.js
add this code:

{literal} 
<script language="JavaScript1.2"> 

function InitSaveVariables_shipping(form){
s_address = form.s_address.value;
s_address_2 = form.s_address_2.value;
s_city = form.s_city.value;
s_state = form.s_state.value;
_s_state = form._s_state.value;
s_country = form.s_country.value;
s_zipcode = form.s_zipcode.value;
}

function copybilling(form){
if (form.copyb.checked){
InitSaveVariables_shipping(form);
form.s_address.value = form.b_address.value;
form.s_address_2.value = form.b_address_2.value;
form.s_city.value = form.b_city.value;
form.s_state.value = form.b_state.value;
form._s_state.value = form._b_state.value;
form.s_country.value = form.b_country.value;
form.s_zipcode.value = form.b_zipcode.value;
}

else {
	form.s_address.value = "";
	form.s_address_2.value = "";
	form.s_city.value = "";
	form.s_state.value = form.b_state.value;
	form._s_state.value = "";
	form.s_country.value = form.b_country.value;
	form.s_zipcode.value = "";
	}
}

</script> 
{/literal}

2) in skin1/customer/home.tpl

after

<link rel="stylesheet" href="{$SkinDir}/{#CSSFile#}">

add this code

<script language=JavaScript1.3 src="{$SkinDir}/copybilling.js"></script>

3) find skin1/main/register_billing_address.tpl

After the last </TR>
add this code

add

{* ======== COPY BILLING TO SHIPPING MOD ======= *}
<TR> 
<TD align="right"></TD> 
<TD></TD> 
<TD nowrap> 
<input type="checkbox" name="copyb" onclick=javascript:copybilling(this.form);>Use {$lng.lbl_billing_address} as {$lng.lbl_shipping_address}


</TD> 
</TR>
{* ======== COPY BILLING TO SHIPPING MOD ======= *}

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Done.

I would then change the language variable - lbl_shipping_address_registration

from

Shipping Address (leave empty if same as billing address)

to just

Shipping Address