[DogByteMan]

Instructions for 4.0.x using the ezCheckout mod by jon:

In your skin1 folder create the following files

copybilling1.js

function InitSaveVariables_shipping(form){ 
s_firstname = form.s_firstname.value; 
s_lastname = form.s_lastname.value; 
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 = document.getElementById('_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_firstname.value = form.firstname.value; 
form.s_lastname.value = form.lastname.value; 
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_country.value = form.b_country.value; 
form.s_zipcode.value = form.b_zipcode.value; 
change_states(document.getElementById('s_country'), 's_state', 'State/Province', '', '', '', ''); 
form.s_state.value = form.b_state.value; 
document.getElementById('_s_state').value = document.getElementById('_b_state').value; 
} 

else { 
   form.s_firstname.value = ""; 
   form.s_lastname.value = ""; 
   form.s_address.value = ""; 
   form.s_address_2.value = ""; 
   form.s_city.value = ""; 
   form.s_country.value = form.b_country.value; 
   form.s_zipcode.value = ""; 
   change_states(document.getElementById('s_country'), 's_state', 'State/Province', '', '', '', ''); 
   form.s_state.value = form.b_state.value; 
   document.getElementById('_s_state').value = ""; 
   } 
}

copybilling2.js

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 = ""; 
   } 
}

In skin1/customer/home_checkout.tpl

after

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

add this code

<script language=JavaScript1.3 src="{$SkinDir}/copybilling1.js"></script>

In skin1/customer/home.tpl

after

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

add this code

<script language=JavaScript1.3 src="{$SkinDir}/copybilling2.js"></script>

Find skin1/main/register_billing_address.tpl

After the last </TR>
add this code

{* ======== 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 ======= *}