var skinDir = urlSitio + "/libjs/shadowbox/src/skin";
var langDir = urlSitio + "/libjs/shadowbox/src/lang";
var playDir = urlSitio + "/libjs/shadowbox/src/player";
Shadowbox.loadSkin('classic', skinDir); // use the "classic" skin
Shadowbox.loadLanguage('es', langDir); // use the English language
Shadowbox.loadPlayer(['iframe'], playDir); // use img and qt players

window.onload = function(){
  Shadowbox.init();
};