{if $is_popup} {assign var="base_template" value="base.tpl.html"} {else} {assign var="base_template" value="base_full.tpl.html"} {/if} {extends "$base_template"} {block title}{t}Error{/t}{/block} {block "content"} {if !$is_popup}  {t}Go Back{/t} {/if} {/block}