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function svgNode(e,innermost) {
  var d = e.target.correspondingUseElement || e.target, nn = '{$string:namespace}svg', s;
  while(d.parentNode) {
    if(d.nodeName == nn) {
      if(innermost)
        return d;
      s = d;
    }
    d = d.parentNode;
  }
  return s;
}