<script>
function go() {
b.appendChild(a);
d.outerHTML = f.outerHTML;
}
</script>
<table>
<tr id="a">
<th>
<svg id="c" onload="go()">
<use xlink:href="#c"/>
</tr>
<code id="d"></code>
<video id="f">
<details id="b">