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<script>
function start() {
o14=window.document;
o432=document.createElement('audio');
o433=document.createElement('track');
o432.appendChild(o433);
o493=o432.textTracks;
o14.write('<html></html>');
o757=document.createElement('iframe');
o757.addEventListener('load', fun0, false);
document.documentElement.appendChild(o757);
o432.controls^=1;
}
function fun0(e) {
o1062=e.target;
o1063=o1062.contentWindow;
o1064=o1063.document;
document.documentElement.appendChild(o432);
setTimeout(fun1,240);
}
function fun1() {
o433.parentNode.removeChild(o433);
document.replaceChild(o1064.documentElement,document.documentElement);
SpecialPowers.forceGC();
SpecialPowers.forceCC();
}
</script>
<body onload="start()"></body>