function fbs_click() {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;}

//Create your sharelet with desired properties and set button element to false
var object = SHARETHIS.addEntry({
title:'share',
summary: 'Sharing is good for the soul.'},
{button:false});
//Output your customized button
document.write('<span id="share"><a href="javascript:void(0);"><img src="/images/sharethis.gif" border="0"/></a></span>');
//Tie customized button to ShareThis button functionality.
var element = document.getElementById("share");
object.attachButton(element);
// JavaScript Document