AddThis

Facebook send button doesn't work

Hi
I´m trying to use the facebook send button. I insert this code on my page:

<div class="addthis_toolbox addthis_default_style">
<a class="addthis_button_facebook_send"></a>
</div>

This is what comes out

<div class="addthis_toolbox addthis_default_style">
<a class=" at300b" style="height: 0px; width: 0px; " title="Send to Facebook_send" href="#">
<span></span>
</a>
<div class="atclear">
</div>
</div>

I have other buttons that work perfectly fine, but there seems to be something wrong with the send button.

This is my site http://blogg.nova.is/blogg/2012/04/16/Draw-Something/

Please help me,

Thank you in advance
Jakob
jakob@nova.is