ss="hl opt">=</span> <span class="hl kwa">null</span><span class="hl opt">;</span>
      <span class="hl opt">}</span>
      conditionalElem <span class="hl opt">=</span> node<span class="hl opt">.</span>ownerDocument<span class="hl opt">.</span><span class="hl kwd">createElement</span><span class="hl opt">(</span><span class="hl str">'conditional'</span><span class="hl opt">);</span>
      conditionalElem<span class="hl opt">.</span><span class="hl kwd">setAttribute</span><span class="hl opt">(</span><span