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   1  var ak_js = document.getElementById( "ak_js" );
   2  
   3  if ( ! ak_js ) {
   4      ak_js = document.createElement( 'input' );
   5      ak_js.setAttribute( 'id', 'ak_js' );
   6      ak_js.setAttribute( 'name', 'ak_js' );
   7      ak_js.setAttribute( 'type', 'hidden' );
   8  }
   9  else {
  10      ak_js.parentNode.removeChild( ak_js );
  11  }
  12  
  13  ak_js.setAttribute( 'value', ( new Date() ).getTime() );
  14  
  15  var commentForm = document.getElementById( 'commentform' );
  16  
  17  if ( commentForm ) {
  18      commentForm.appendChild( ak_js );
  19  }
  20  else {
  21      var replyRowContainer = document.getElementById( 'replyrow' );
  22  
  23      if ( replyRowContainer ) {
  24          var children = replyRowContainer.getElementsByTagName( 'td' );
  25  
  26          if ( children.length > 0 ) {
  27              children[0].appendChild( ak_js );
  28          }
  29      }
  30  }