--- store.inc.orig	2005-10-30 19:10:38.000000000 -0600
+++ store.inc	2006-02-22 17:33:30.000000000 -0600
@@ -204,7 +204,36 @@
 
 function store_transaction_addresses_form($edit, $display = null) {
 
-  $fields = form_textfield(t('First name'), 'shipping_firstname', $edit->shipping_firstname, 32, 32, '');
+  $fields = '<script type="text/javascript">
+<!--
+function ShipToBill(){
+   var bBox1 = document.getElementById("edit-billing_firstname");
+   var bBox2 = document.getElementById("edit-billing_lastname");
+   var bBox3 = document.getElementById("edit-billing_street1");
+   var bBox4 = document.getElementById("edit-billing_street2");
+   var bBox5 = document.getElementById("edit-billing_city");
+   var bBox6 = document.getElementById("edit-billing_state");
+   var bBox7 = document.getElementById("edit-billing_zip");
+
+   var sBox1 = document.getElementById("edit-shipping_firstname");
+   var sBox2 = document.getElementById("edit-shipping_lastname");
+   var sBox3 = document.getElementById("edit-shipping_street1");
+   var sBox4 = document.getElementById("edit-shipping_street2");
+   var sBox5 = document.getElementById("edit-shipping_city");
+   var sBox6 = document.getElementById("edit-shipping_state");
+   var sBox7 = document.getElementById("edit-shipping_zip");
+
+bBox1.value = sBox1.value;
+bBox2.value = sBox2.value;
+bBox3.value = sBox3.value;
+bBox4.value = sBox5.value;
+bBox6.value = sBox6.value;
+bBox7.value = sBox7.value;
+}
+//-->
+</script>';
+
+  $fields .= form_textfield(t('First name'), 'shipping_firstname', $edit->shipping_firstname, 32, 32, '');
   $fields .= form_textfield(t('Last name'), 'shipping_lastname', $edit->shipping_lastname, 32, 32, '');
   $fields .= form_textfield(t('Street1'), 'shipping_street1', $edit->shipping_street1, 60, 64, '');
   $fields .= form_textfield(t('Street2'), 'shipping_street2', $edit->shipping_street2, 60, 64, '');
@@ -212,6 +241,7 @@
   $fields .= form_textfield(t('State'), 'shipping_state', $edit->shipping_state, 32, 32, '');
   $fields .= form_textfield(t('Zip'), 'shipping_zip', $edit->shipping_zip, 10, 10, '');
   $fields .= form_select(t('Country'), 'shipping_country', ($edit->shipping_country ? $edit->shipping_country : variable_get('ec_country', '')), address_build_countries(), '');
+  $fields .= '<button type="button" id="ShipToBillbutton" onClick="ShipToBill()" >Copy Shipping Info to Billing Info</button>';
   $shipping = form_group(t('Shipping address'), $fields);
 
   $fields = form_textfield(t('First name'), 'billing_firstname', $edit->billing_firstname, 32, 32, '');