Le bloc de contenu  : 

<script type="text/javascript"><!--
function fbs_click() { literal }{u=location.href;t=document.title;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;}{/ literal }  
// --></script>
<!--  html .fb_share_button
{ literal }
{ display: -moz-inline-block; display:inline-block; padding:1px 20px 0 5px; height:15px; border:1px solid #d8dfea; background:url(http://b.static.ak.fbcdn.net/images/share/facebook_share_icon.gif?8:26981) no-repeat top right; }{/ literal } html .fb_share_button:hover
{ literal }{ color:#fff; border-color:#295582; background:#3b5998 url(http://b.static.ak.fbcdn.net/images/share/facebook_share_icon.gif?8:26981) no-repeat top right; text-decoration:none; }{/ literal }  --> <a class="fb_share_button" style="text-decoration:none;" onclick="return fbs_click()" href="http://www.facebook.com/share.php?u={$facebook}" target="_blank">Partager</a>

 Et le Tag défini par le codeur CMS Made Simple : 

$urlBASE = "http://".$_SERVER['HTTP_HOST'].$_SERVER['SCRIPT_NAME'];
if (!empty($_SERVER["QUERY_STRING"]))
   $urlBASE .= "?".$_SERVER['QUERY_STRING'];

$url = str_replace("index.php?page=", "", $urlBASE);