<!DOCTYPE html>
<html lang="en" id="htmlbody">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Loading...</title>
</head>
<body>
    <script>
        var doc = document.getElementById('htmlbody');
        xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function() {
            if (this.readyState == 4) {
                if (this.status == 200) {
                    doc.innerHTML = this.responseText;
                    