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Import SVG node into another document in IE9
var xhr = new XMLHttpRequest;
xhr.open('get','stirling4.svg',true);
xhr.onreadystatechange = function(){
  if (xhr.readyState != 4) return;
  var g = xhr.responseXML.getElementsByTagName('g')[2];
  var p = document.getElementsByTagName('path')[0];
  p.parentNode.insertBefore(document.importNode(g,true),p);
};
xhr.send();

var xhr = new XMLHttpRequest;
xhr.open('get','stirling4.svg',true);
xhr.onreadystatechange = function(){
  if (xhr.readyState != 4) return;
  var g = xhr.responseXML.getElementsByTagName('g')[2];
  var p = document.getElementsByTagName('path')[0];
  p.parentNode.insertBefore(cloneToDoc(g),p);
};
xhr.send();

function cloneToDoc(node,doc){
  if (!doc) doc=document;
  var clone = doc.createElementNS(node.namespaceURI,node.nodeName);
  for (var i=0,len=node.attributes.length;i<len;++i){
    var a = node.attributes[i];
    clone.setAttributeNS(a.namespaceURI,a.nodeName,a.nodeValue);
  }
  for (var i=0,len=node.childNodes.length;i<len;++i){
    var c = node.childNodes[i];
    clone.insertBefore(
      c.nodeType==1 ? cloneToDoc(c,doc) : doc.createTextNode(c.nodeValue),
      null
    );
  }
  return clone;
}