una/studio/template/page_not_found.html

<script type="text/javascript" defer="defer">
<!--
$(document).ready(function() {      
    $('#bx-std-page-hot-found').dolPopup({
        fog: {
            color: '#fff',
            opacity: 0
        },
        closeOnOuterClick: false
    });
});
-->
</script>
<div id="bx-std-page-hot-found" style="display:none">__content__</div>