Iframe browser

iframe_browser.html

<script>
        (function(d){
            var init = function(){
                var form = d.getElementById("my_form"), input = d.getElementById("url"), iframe = d.getElementById("browser");
                form.addEventListener("submit", function(e){
                    var val = input.value;
                    if(val) {
                        iframe.src = "//" + val;
                        console.log(val);
                    }
                    e.preventDefault();
                }, false);
            };
            d.addEventListener("DOMContentLoaded", init, false);
        })(document);
    </script>

    <form method="post" target="browser" id="my_form">
<input style="width:120%;" placeholder="Put the website here (eg. &quot;example.org&quot;)" name="url" id="url" type="text" />         
<input style="width:8%;" name="submit" type="button" value="Go" />
<iframe name="browser" frameBorder="0" id="browser" src="" style="height:100%; width:100%"></iframe>