Put social networking site button in product view page magento

Past this code in product.phtml file This code  dipslay all social netwoking site share button.

<div class="addthis_toolbox addthis_default_style ">
     <a class="addthis_button_preferred_1"></a>
     <a class="addthis_button_preferred_2"></a>
     <a class="addthis_button_preferred_3"></a>
     <a class="addthis_button_preferred_4"></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-4ecde5167f228697"></script>