Display an ANSI in a webv4 page.

<?xjs
    var f = new File('/path/to/some.ans');
    f.open('r');
    var ans = base64_encode(f.read());
    f.close();
?>

<div id="ansi-container"></div>

<script type="text/javascript" src="./js/graphics-converter.js"></script>
<script type="text/javascript">
    const gc = new GraphicsConverter();
    const ans = atob('<? write(ans); ?>');
    gc.from_ans(ans, '#ansi-container');
</script>