<select name="country" id="selCountries_{$sn}" onchange="region.changed(this, 1, 'selProvinces_{$sn}')" style="border:1px solid #ccc;">
         <option value="0">{$lang.please_select}{$name_of_region[0]}</option>
         <!-- {foreach from=$country_list item=country} -->
         <option value="{$country.region_id}" {if $consignee.country eq $country.region_id}selected{/if}>{$country.region_name}</option>
         <!-- {/foreach} -->
       </select>

 <script type="text/javascript">
     $(document).ready(function(){
         var onll=document.getElementsById('selCountries_0');
         region.changed(onll, 1, 'selProvinces_0');
     })
 </script>