docs: function XML2String(node){
      // modern browsers feature
      if (typeof XMLSerializer != 'undefined')
        return new XMLSerializer().serializeToString(node);
  
      // old IE feature
      if (typeof node.xml == 'string')
        return node.xml;
  
      // other browsers
      if (node.nodeType == domUtils.DOCUMENT_NODE)
        node = node.documentElement;
  
      return domUtils.outerHTML(node);
    }