function fbs_click(u) {
  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;
}


function twitter_click(u) {
  window.open('http://twitter.com/home?status=Currently%20reading%20'+encodeURIComponent(u),'sharer','toolbar=0,status=0,width=626,height=436');
  return false;
}