Sicuro che la pagina HTML sia corretta?

codice:
<html>
<script type="text/javascript">var switchTo5x=true;</script>
<script type="text/javascript" src="http://w.sharethis.com/button/buttons.js"></script>
<script type="text/javascript" src="http://s.sharethis.com/loader.js"></script>

</head>
<body>
<div class="test">aaaa</div>
<script type="text/javascript">stLight.options({publisher: "CHIAVE", doNotHash: false, doNotCopy: false, hashAddressBar: false});</script>
<script>
var options={ "publisher": "CHIAVE", "position": "left", "ad": { "visible": false, "openDelay": 5, "closeDelay": 0}, "chicklets": { "items": ["facebook", "twitter", "linkedin", "pinterest", "email", "sharethis"]}};
var st_hover_widget = new sharethis.widgets.hoverbuttons(options);
</script>
</body>
</html>
se all'interno del body non esiste almeno un div lancia un'eccezione e non lo mostra