<header>
<!--{def common/site_logo}-->
<h1 id="logo"><a href="./"><img src="{val common/site_logo_file}" alt="common/site_name"></a></h1>
<!--{/def}-->
<!--{ndef common/site_logo}-->
<h1 id="logo"><a href="./">{val common/site_name}</a></h1>
<!--{/ndef}-->
</header>
