Кнопка Facebook share и Modx

<script type="text/javascript">
function fbs_click() {
u='[(site_url)][~[*id*]~]';
t='[*pagetitle*]';
window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(u)+'&t='+encodeURIComponent(t),'sharer','toolbar=0,status=0,width=626,height=436');
return false;
}
</script>
<a class="fbshare" href="http://www.facebook.com/share.php?u=[(site_url)][~[*id*]~]" onclick="return fbs_click()" target="_blank">Post this news to Facebook</a>