Valid html and Google plus One

It has been a while since I posted here as have been busy elsewhere, but this is something I feel I should share and hopefully receive some feedback on.

Google has recently introduced the plus one button but the standard code does not validate, even though Matt Cutts says valid html is not essential I like to use it where I can.

Here is my suggestion for a valid plus one button:

<script src="https://apis.google.com/js/plusone.js" type="text/javascript"></script>
<script type="text/javascript">
function renderPlusone(){gapi.plusone.render("g-plusone", {"size": "tall", "count": "true"});}
renderPlusone();
</script>
<div id="g-plusone"></div>


eg: http://www.tubal-reversal.net/dr-bergers-credentials.htm