<html> <head> <script> function start () { try { o1 = document.createElementNS('http://www.w3.org/1998/Math/MathML', 'mtable') } catch (e) {} try { o2 = document.createTextNode("\u202D") } catch (e) {} try { document.documentElement.appendChild(o2) } catch (e) {} try { o1.insertBefore(document.documentElement, o1.childNodes[0]) } catch (e) {} try { document.appendChild(o1) } catch (e) {} try { document.append(o2, undefined) } catch (e) {} } document.addEventListener('DOMContentLoaded', start) </script> </head> </html>