Removing Mobile Safari URL Address Bar when orientation changes

<h1>

(function() {

        function s() {

          var e = document.createElement("div");

          e.style.height = "10001px";

          document.body.appendChild(e);

        setTimeout(function() {

            window.scrollTo(0, 0);

            document.body.removeChild(e);

        }, 1);

    };

    function a() {

        var n = navigator.userAgent;

        return (

        n.match(/iPhone/i) || n.match(/iPad/i))

    };

    s();

    if (a()) {

        window.addEventListener('orientationchange', function(evt) {

            s();

        }, false);

    }

})();

</h1>

</pre>