Use of document.load forbidden on Documents that come from other Windows. Only the Window in which a Document was created is allowed to call .load on that Document. Preferably, use XMLHttpRequest instead.
Wužywanje document.load jo na dokumentach zakazane, kótarež pśidu z drugich woknow. Jano wokno, w kótaremž dokument jo se napórak, smějo .load toś ten dokument wołaś. Wužywajśo XMLHttpRequest město togo.