        function zobrazAtributy() {
            var body = document.getElementsByTagName("body")[0];
            for (var atribut in navigator) {
                var elem = document.createElement("p");
                var text = document.createTextNode(atribut + ": " + navigator[atribut]);
                elem.appendChild(text);
                body.appendChild(elem);
            }
        }

<body onload="zobrazAtributy()">

