If you are using ShareThis on a page that is encrypted, you will need to make two slight changes to the ShareThis code to prevent errors from popping up. Both of these changes are in the ShareThis script URL. You will need to change the http:// to https:// and you will need to change the w.sharethis to ws.sharethis

Regular ShareThis Script

<script type="text/javascript" src="http://w.sharethis.com/button/buttons.js"></script>
<script type="text/javascript">
        stLight.options({
                publisher:'12345',
        });
</script>

Secure ShareThis Script

<script type="text/javascript" src="https://ws.sharethis.com/button/buttons.js"></script>
<script type="text/javascript">
        stLight.options({
                publisher:'12345',
        });
</script>