1489149.html - mozsearch

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<html class="reftest-wait">

<style>

  *|HTML {

    column-width: calc(15px)

  *|HTML .class_1 {

    border-style: dotted;

    float: inline-end ! important

* {

    block-size: calc(2px);

</style>

<script>

  function frameLoad() {

    setInterval(function () {

      document.documentElement.getBoundingClientRect();

      document.documentElement.appendChild(o1)

      document.documentElement.getBoundingClientRect();

      document.documentElement.appendChild(o2)

    }, 250)

    document.documentElement.getBoundingClientRect();

    try {document.documentElement.appendChild(o4)} catch (e) { }

    try {xhr = new XMLHttpRequest()} catch (e) { }

    try {xhr.open('GET', 'data:text/html,1', false)} catch (e) { }

    try {xhr.send()} catch (e) { }

    document.documentElement.getBoundingClientRect();

    try {document.documentElement.appendChild(o3)} catch (e) { }

    try {this.contentWindow.location.reload()} catch (e) { }

  function start() {

    o1 = document.createElement('del')

    o2 = document.createElement('track')

    o3 = document.createElement('video')

    o4 = document.createElement('video')

    o1.setAttribute('class', 'class_1')

    o2.setAttribute('class', 'class_1')

    o3.setAttribute('class', 'class_1')

    frame = document.createElement('iframe')

    frame.addEventListener('load', frameLoad)

    setTimeout(function () {

      document.documentElement.innerHTML = "1";

      document.documentElement.removeAttribute("class");

    }, 1000);

    document.documentElement.getBoundingClientRect();

    document.firstElementChild.appendChild(frame)

  document.addEventListener('DOMContentLoaded', start)

</script>

<body></body>

</html>