Use the following code as a template for configuring a single AddToAny button to share a specific link.

<a class="a2a_dd" href="http://www.addtoany.com/share_save">
    <img src="http://static.addtoany.com/buttons/share_save_171_16.png" border="0" alt="Share"/>
</a>

<script type="text/javascript">
a2a_config = {
    linkname: 'Example Page',
    linkurl: 'http://www.example.com/page.html'
};
</script>

<script type="text/javascript" src="http://static.addtoany.com/menu/page.js"></script>