Insert inside body text?

hello im trying to use this module to insert a addthis Buttons inside text.

All ready I can see the buttons in my article, but i want to insert after a certain amount of text, like a teaser and then the Buttons, is posible to create this with this module?

this is my code

<div style="float: right; margin: 0; padding: 0 1em .25em 0;">  <!-- AddThis Button BEGIN -->
<div class="addthis_toolbox addthis_default_style ">
<a class="addthis_button_preferred_1">Facebook</a>
<a class="addthis_button_preferred_2">Twitter</a>
<a class="addthis_button_preferred_3">Print</a>
<a class="addthis_button_preferred_4">Google</a>
<a class="addthis_button_compact"></a>
<a class="addthis_counter addthis_bubble_style"></a>
</div>
<script type="text/javascript" src="http://s7.addthis.com/js/250/addthis_widget.js#pubid=xa-4e07dd6d080a9123"></script>
<!-- AddThis Button END -->
</div>%body<br class="clear"/>