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.
L'usu de document.load ta prohibíu en documentos que vienen d'otres ventanes. Namái la ventana na que se creó un documentu pue llamar a .load nesi documentu. Ye preferible usar XMLHttpRequest en so llugar.