window.fbAsyncInit = function() {
    FB.init({appId: 'your app id', status: true, cookie: true,
             xfbml: true});
  };
  (function() {
    var e = document.createElement('script'); e.async = true;
    e.src = document.location.protocol +
      '//connect.facebook.net/en_US/all.js';
    document.getElementById('fb-root').appendChild(e);
  }());
var myurl = document.getElementsByTagName('base');
// elimina primul si ultimul slash
var baseUrl =  myurl[0].href; 
if (baseUrl.charAt(0) == "/") baseUrl = baseUrl.substr(1);
if (baseUrl.charAt(baseUrl.length - 1) == "/") baseUrl = baseUrl.substr(0, baseUrl.length - 1);

document.write('<fb:like href="' + baseUrl + location.pathname + '" layout="button_count" show_faces="true" width="160" action="like" font="lucida grande" colorscheme="light"></fb:like>');