diff --git a/d2renderers/d2latex/polyfills.js b/d2renderers/d2latex/polyfills.js
index 2f5de305f..77afa962a 100644
--- a/d2renderers/d2latex/polyfills.js
+++ b/d2renderers/d2latex/polyfills.js
@@ -8,3147 +8,7 @@
 // https://github.com/google/wicked-good-xpath
 // MIT license: https://github.com/google/wicked-good-xpath/blob/master/LICENSE
 //
-function find(list, predicate, ac) {
-	if (ac === undefined) {
-		ac = Array.prototype;
-	}
-	if (list && typeof ac.find === 'function') {
-		return ac.find.call(list, predicate);
-	}
-	for (var i = 0; i < list.length; i++) {
-		if (Object.prototype.hasOwnProperty.call(list, i)) {
-			var item = list[i];
-			if (predicate.call(undefined, item, i, list)) {
-				return item;
-			}
-		}
-	}
-}
-
-function freeze(object, oc) {
-	if (oc === undefined) {
-		oc = Object
-	}
-	return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object
-}
-
-function assign(target, source) {
-	if (target === null || typeof target !== 'object') {
-		throw new TypeError('target is not an object')
-	}
-	for (var key in source) {
-		if (Object.prototype.hasOwnProperty.call(source, key)) {
-			target[key] = source[key]
-		}
-	}
-	return target
-}
-
-var MIME_TYPE = freeze({
-	HTML: 'text/html',
-	isHTML: function (value) {
-		return value === MIME_TYPE.HTML
-	},
-	XML_APPLICATION: 'application/xml',
-	XML_TEXT: 'text/xml',
-	XML_XHTML_APPLICATION: 'application/xhtml+xml',
-	XML_SVG_IMAGE: 'image/svg+xml',
-})
-
-/**
- * Namespaces that are used in this code base.
- *
- * @see http://www.w3.org/TR/REC-xml-names
- */
-var NAMESPACE = freeze({
-	/**
-	 * The XHTML namespace.
-	 *
-	 * @see http://www.w3.org/1999/xhtml
-	 */
-	HTML: 'http://www.w3.org/1999/xhtml',
-
-	/**
-	 * Checks if `uri` equals `NAMESPACE.HTML`.
-	 *
-	 * @param {string} [uri]
-	 *
-	 * @see NAMESPACE.HTML
-	 */
-	isHTML: function (uri) {
-		return uri === NAMESPACE.HTML
-	},
-
-	/**
-	 * The SVG namespace.
-	 *
-	 * @see http://www.w3.org/2000/svg
-	 */
-	SVG: 'http://www.w3.org/2000/svg',
-
-	/**
-	 * The `xml:` namespace.
-	 *
-	 * @see http://www.w3.org/XML/1998/namespace
-	 */
-	XML: 'http://www.w3.org/XML/1998/namespace',
-
-	/**
-	 * The `xmlns:` namespace
-	 *
-	 * @see https://www.w3.org/2000/xmlns/
-	 */
-	XMLNS: 'http://www.w3.org/2000/xmlns/',
-})
-
-/**
- * A prerequisite for `[].filter`, to drop elements that are empty
- * @param {string} input
- * @returns {boolean}
- */
-function notEmptyString (input) {
-	return input !== ''
-}
-/**
- * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace
- * @see https://infra.spec.whatwg.org/#ascii-whitespace
- *
- * @param {string} input
- * @returns {string[]} (can be empty)
- */
-function splitOnASCIIWhitespace(input) {
-	// U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE
-	return input ? input.split(/[\t\n\f\r ]+/).filter(notEmptyString) : []
-}
-
-/**
- * Adds element as a key to current if it is not already present.
- *
- * @param {Record<string, boolean | undefined>} current
- * @param {string} element
- * @returns {Record<string, boolean | undefined>}
- */
-function orderedSetReducer (current, element) {
-	if (!current.hasOwnProperty(element)) {
-		current[element] = true;
-	}
-	return current;
-}
-
-/**
- * @see https://infra.spec.whatwg.org/#ordered-set
- * @param {string} input
- * @returns {string[]}
- */
-function toOrderedSet(input) {
-	if (!input) return [];
-	var list = splitOnASCIIWhitespace(input);
-	return Object.keys(list.reduce(orderedSetReducer, {}))
-}
-
-/**
- * Uses `list.indexOf` to implement something like `Array.prototype.includes`,
- * which we can not rely on being available.
- *
- * @param {any[]} list
- * @returns {function(any): boolean}
- */
-function arrayIncludes (list) {
-	return function(element) {
-		return list && list.indexOf(element) !== -1;
-	}
-}
-
-function copy(src,dest){
-	for(var p in src){
-		if (Object.prototype.hasOwnProperty.call(src, p)) {
-			dest[p] = src[p];
-		}
-	}
-}
-
-/**
-^\w+\.prototype\.([_\w]+)\s*=\s*((?:.*\{\s*?[\r\n][\s\S]*?^})|\S.*?(?=[;\r\n]));?
-^\w+\.prototype\.([_\w]+)\s*=\s*(\S.*?(?=[;\r\n]));?
- */
-function _extends(Class,Super){
-	var pt = Class.prototype;
-	if(!(pt instanceof Super)){
-		function t(){};
-		t.prototype = Super.prototype;
-		t = new t();
-		copy(pt,t);
-		Class.prototype = pt = t;
-	}
-	if(pt.constructor != Class){
-		if(typeof Class != 'function'){
-			console.error("unknown Class:"+Class)
-		}
-		pt.constructor = Class
-	}
-}
-
-// Node Types
-var NodeType = {}
-var ELEMENT_NODE                = NodeType.ELEMENT_NODE                = 1;
-var ATTRIBUTE_NODE              = NodeType.ATTRIBUTE_NODE              = 2;
-var TEXT_NODE                   = NodeType.TEXT_NODE                   = 3;
-var CDATA_SECTION_NODE          = NodeType.CDATA_SECTION_NODE          = 4;
-var ENTITY_REFERENCE_NODE       = NodeType.ENTITY_REFERENCE_NODE       = 5;
-var ENTITY_NODE                 = NodeType.ENTITY_NODE                 = 6;
-var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;
-var COMMENT_NODE                = NodeType.COMMENT_NODE                = 8;
-var DOCUMENT_NODE               = NodeType.DOCUMENT_NODE               = 9;
-var DOCUMENT_TYPE_NODE          = NodeType.DOCUMENT_TYPE_NODE          = 10;
-var DOCUMENT_FRAGMENT_NODE      = NodeType.DOCUMENT_FRAGMENT_NODE      = 11;
-var NOTATION_NODE               = NodeType.NOTATION_NODE               = 12;
-
-// ExceptionCode
-var ExceptionCode = {}
-var ExceptionMessage = {};
-var INDEX_SIZE_ERR              = ExceptionCode.INDEX_SIZE_ERR              = ((ExceptionMessage[1]="Index size error"),1);
-var DOMSTRING_SIZE_ERR          = ExceptionCode.DOMSTRING_SIZE_ERR          = ((ExceptionMessage[2]="DOMString size error"),2);
-var HIERARCHY_REQUEST_ERR       = ExceptionCode.HIERARCHY_REQUEST_ERR       = ((ExceptionMessage[3]="Hierarchy request error"),3);
-var WRONG_DOCUMENT_ERR          = ExceptionCode.WRONG_DOCUMENT_ERR          = ((ExceptionMessage[4]="Wrong document"),4);
-var INVALID_CHARACTER_ERR       = ExceptionCode.INVALID_CHARACTER_ERR       = ((ExceptionMessage[5]="Invalid character"),5);
-var NO_DATA_ALLOWED_ERR         = ExceptionCode.NO_DATA_ALLOWED_ERR         = ((ExceptionMessage[6]="No data allowed"),6);
-var NO_MODIFICATION_ALLOWED_ERR = ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = ((ExceptionMessage[7]="No modification allowed"),7);
-var NOT_FOUND_ERR               = ExceptionCode.NOT_FOUND_ERR               = ((ExceptionMessage[8]="Not found"),8);
-var NOT_SUPPORTED_ERR           = ExceptionCode.NOT_SUPPORTED_ERR           = ((ExceptionMessage[9]="Not supported"),9);
-var INUSE_ATTRIBUTE_ERR         = ExceptionCode.INUSE_ATTRIBUTE_ERR         = ((ExceptionMessage[10]="Attribute in use"),10);
-//level2
-var INVALID_STATE_ERR        	= ExceptionCode.INVALID_STATE_ERR        	= ((ExceptionMessage[11]="Invalid state"),11);
-var SYNTAX_ERR               	= ExceptionCode.SYNTAX_ERR               	= ((ExceptionMessage[12]="Syntax error"),12);
-var INVALID_MODIFICATION_ERR 	= ExceptionCode.INVALID_MODIFICATION_ERR 	= ((ExceptionMessage[13]="Invalid modification"),13);
-var NAMESPACE_ERR            	= ExceptionCode.NAMESPACE_ERR           	= ((ExceptionMessage[14]="Invalid namespace"),14);
-var INVALID_ACCESS_ERR       	= ExceptionCode.INVALID_ACCESS_ERR      	= ((ExceptionMessage[15]="Invalid access"),15);
-
-/**
- * DOM Level 2
- * Object DOMException
- * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html
- * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html
- */
-function DOMException(code, message) {
-	if(message instanceof Error){
-		var error = message;
-	}else{
-		error = this;
-		Error.call(this, ExceptionMessage[code]);
-		this.message = ExceptionMessage[code];
-		if(Error.captureStackTrace) Error.captureStackTrace(this, DOMException);
-	}
-	error.code = code;
-	if(message) this.message = this.message + ": " + message;
-	return error;
-};
-DOMException.prototype = Error.prototype;
-copy(ExceptionCode,DOMException)
-
-/**
- * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177
- * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.
- * The items in the NodeList are accessible via an integral index, starting from 0.
- */
-function NodeList() {
-};
-NodeList.prototype = {
-	/**
-	 * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.
-	 * @standard level1
-	 */
-	length:0,
-	/**
-	 * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.
-	 * @standard level1
-	 * @param index  unsigned long
-	 *   Index into the collection.
-	 * @return Node
-	 * 	The node at the indexth position in the NodeList, or null if that is not a valid index.
-	 */
-	item: function(index) {
-		return this[index] || null;
-	},
-	toString:function(isHTML,nodeFilter){
-		for(var buf = [], i = 0;i<this.length;i++){
-			serializeToString(this[i],buf,isHTML,nodeFilter);
-		}
-		return buf.join('');
-	},
-	/**
-	 * @private
-	 * @param {function (Node):boolean} predicate
-	 * @returns {Node[]}
-	 */
-	filter: function (predicate) {
-		return Array.prototype.filter.call(this, predicate);
-	},
-	/**
-	 * @private
-	 * @param {Node} item
-	 * @returns {number}
-	 */
-	indexOf: function (item) {
-		return Array.prototype.indexOf.call(this, item);
-	},
-};
-
-function LiveNodeList(node,refresh){
-	this._node = node;
-	this._refresh = refresh
-	_updateLiveList(this);
-}
-function _updateLiveList(list){
-	var inc = list._node._inc || list._node.ownerDocument._inc;
-	if(list._inc != inc){
-		var ls = list._refresh(list._node);
-		//console.log(ls.length)
-		__set__(list,'length',ls.length);
-		copy(ls,list);
-		list._inc = inc;
-	}
-}
-LiveNodeList.prototype.item = function(i){
-	_updateLiveList(this);
-	return this[i];
-}
-
-_extends(LiveNodeList,NodeList);
-
-/**
- * Objects implementing the NamedNodeMap interface are used
- * to represent collections of nodes that can be accessed by name.
- * Note that NamedNodeMap does not inherit from NodeList;
- * NamedNodeMaps are not maintained in any particular order.
- * Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index,
- * but this is simply to allow convenient enumeration of the contents of a NamedNodeMap,
- * and does not imply that the DOM specifies an order to these Nodes.
- * NamedNodeMap objects in the DOM are live.
- * used for attributes or DocumentType entities
- */
-function NamedNodeMap() {
-};
-
-function _findNodeIndex(list,node){
-	var i = list.length;
-	while(i--){
-		if(list[i] === node){return i}
-	}
-}
-
-function _addNamedNode(el,list,newAttr,oldAttr){
-	if(oldAttr){
-		list[_findNodeIndex(list,oldAttr)] = newAttr;
-	}else{
-		list[list.length++] = newAttr;
-	}
-	if(el){
-		newAttr.ownerElement = el;
-		var doc = el.ownerDocument;
-		if(doc){
-			oldAttr && _onRemoveAttribute(doc,el,oldAttr);
-			_onAddAttribute(doc,el,newAttr);
-		}
-	}
-}
-function _removeNamedNode(el,list,attr){
-	//console.log('remove attr:'+attr)
-	var i = _findNodeIndex(list,attr);
-	if(i>=0){
-		var lastIndex = list.length-1
-		while(i<lastIndex){
-			list[i] = list[++i]
-		}
-		list.length = lastIndex;
-		if(el){
-			var doc = el.ownerDocument;
-			if(doc){
-				_onRemoveAttribute(doc,el,attr);
-				attr.ownerElement = null;
-			}
-		}
-	}else{
-		throw new DOMException(NOT_FOUND_ERR,new Error(el.tagName+'@'+attr))
-	}
-}
-NamedNodeMap.prototype = {
-	length:0,
-	item:NodeList.prototype.item,
-	getNamedItem: function(key) {
-//		if(key.indexOf(':')>0 || key == 'xmlns'){
-//			return null;
-//		}
-		//console.log()
-		var i = this.length;
-		while(i--){
-			var attr = this[i];
-			//console.log(attr.nodeName,key)
-			if(attr.nodeName == key){
-				return attr;
-			}
-		}
-	},
-	setNamedItem: function(attr) {
-		var el = attr.ownerElement;
-		if(el && el!=this._ownerElement){
-			throw new DOMException(INUSE_ATTRIBUTE_ERR);
-		}
-		var oldAttr = this.getNamedItem(attr.nodeName);
-		_addNamedNode(this._ownerElement,this,attr,oldAttr);
-		return oldAttr;
-	},
-	/* returns Node */
-	setNamedItemNS: function(attr) {// raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR
-		var el = attr.ownerElement, oldAttr;
-		if(el && el!=this._ownerElement){
-			throw new DOMException(INUSE_ATTRIBUTE_ERR);
-		}
-		oldAttr = this.getNamedItemNS(attr.namespaceURI,attr.localName);
-		_addNamedNode(this._ownerElement,this,attr,oldAttr);
-		return oldAttr;
-	},
-
-	/* returns Node */
-	removeNamedItem: function(key) {
-		var attr = this.getNamedItem(key);
-		_removeNamedNode(this._ownerElement,this,attr);
-		return attr;
-
-
-	},// raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR
-
-	//for level2
-	removeNamedItemNS:function(namespaceURI,localName){
-		var attr = this.getNamedItemNS(namespaceURI,localName);
-		_removeNamedNode(this._ownerElement,this,attr);
-		return attr;
-	},
-	getNamedItemNS: function(namespaceURI, localName) {
-		var i = this.length;
-		while(i--){
-			var node = this[i];
-			if(node.localName == localName && node.namespaceURI == namespaceURI){
-				return node;
-			}
-		}
-		return null;
-	}
-};
-
-/**
- * The DOMImplementation interface represents an object providing methods
- * which are not dependent on any particular document.
- * Such an object is returned by the `Document.implementation` property.
- *
- * __The individual methods describe the differences compared to the specs.__
- *
- * @constructor
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN
- * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)
- * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core
- * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core
- * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard
- */
-function DOMImplementation() {
-}
-
-DOMImplementation.prototype = {
-	/**
-	 * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.
-	 * The different implementations fairly diverged in what kind of features were reported.
-	 * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.
-	 *
-	 * @deprecated It is deprecated and modern browsers return true in all cases.
-	 *
-	 * @param {string} feature
-	 * @param {string} [version]
-	 * @returns {boolean} always true
-	 *
-	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN
-	 * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core
-	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard
-	 */
-	hasFeature: function(feature, version) {
-			return true;
-	},
-	/**
-	 * Creates an XML Document object of the specified type with its document element.
-	 *
-	 * __It behaves slightly different from the description in the living standard__:
-	 * - There is no interface/class `XMLDocument`, it returns a `Document` instance.
-	 * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.
-	 * - this implementation is not validating names or qualified names
-	 *   (when parsing XML strings, the SAX parser takes care of that)
-	 *
-	 * @param {string|null} namespaceURI
-	 * @param {string} qualifiedName
-	 * @param {DocumentType=null} doctype
-	 * @returns {Document}
-	 *
-	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN
-	 * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)
-	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument  DOM Level 2 Core
-	 *
-	 * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
-	 * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
-	 * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
-	 */
-	createDocument: function(namespaceURI,  qualifiedName, doctype){
-		var doc = new Document();
-		doc.implementation = this;
-		doc.childNodes = new NodeList();
-		doc.doctype = doctype || null;
-		if (doctype){
-			doc.appendChild(doctype);
-		}
-		if (qualifiedName){
-			var root = doc.createElementNS(namespaceURI, qualifiedName);
-			doc.appendChild(root);
-		}
-		return doc;
-	},
-	/**
-	 * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.
-	 *
-	 * __This behavior is slightly different from the in the specs__:
-	 * - this implementation is not validating names or qualified names
-	 *   (when parsing XML strings, the SAX parser takes care of that)
-	 *
-	 * @param {string} qualifiedName
-	 * @param {string} [publicId]
-	 * @param {string} [systemId]
-	 * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation
-	 * 				  or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`
-	 *
-	 * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN
-	 * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core
-	 * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard
-	 *
-	 * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
-	 * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
-	 * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
-	 */
-	createDocumentType: function(qualifiedName, publicId, systemId){
-		var node = new DocumentType();
-		node.name = qualifiedName;
-		node.nodeName = qualifiedName;
-		node.publicId = publicId || '';
-		node.systemId = systemId || '';
-
-		return node;
-	}
-};
-
-
-/**
- * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247
- */
-
-function Node() {
-};
-
-Node.prototype = {
-	firstChild : null,
-	lastChild : null,
-	previousSibling : null,
-	nextSibling : null,
-	attributes : null,
-	parentNode : null,
-	childNodes : null,
-	ownerDocument : null,
-	nodeValue : null,
-	namespaceURI : null,
-	prefix : null,
-	localName : null,
-	// Modified in DOM Level 2:
-	insertBefore:function(newChild, refChild){//raises
-		return _insertBefore(this,newChild,refChild);
-	},
-	replaceChild:function(newChild, oldChild){//raises
-		_insertBefore(this, newChild,oldChild, assertPreReplacementValidityInDocument);
-		if(oldChild){
-			this.removeChild(oldChild);
-		}
-	},
-	removeChild:function(oldChild){
-		return _removeChild(this,oldChild);
-	},
-	appendChild:function(newChild){
-		return this.insertBefore(newChild,null);
-	},
-	hasChildNodes:function(){
-		return this.firstChild != null;
-	},
-	cloneNode:function(deep){
-		return cloneNode(this.ownerDocument||this,this,deep);
-	},
-	// Modified in DOM Level 2:
-	normalize:function(){
-		var child = this.firstChild;
-		while(child){
-			var next = child.nextSibling;
-			if(next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE){
-				this.removeChild(next);
-				child.appendData(next.data);
-			}else{
-				child.normalize();
-				child = next;
-			}
-		}
-	},
-  	// Introduced in DOM Level 2:
-	isSupported:function(feature, version){
-		return this.ownerDocument.implementation.hasFeature(feature,version);
-	},
-    // Introduced in DOM Level 2:
-    hasAttributes:function(){
-    	return this.attributes.length>0;
-    },
-	/**
-	 * Look up the prefix associated to the given namespace URI, starting from this node.
-	 * **The default namespace declarations are ignored by this method.**
-	 * See Namespace Prefix Lookup for details on the algorithm used by this method.
-	 *
-	 * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._
-	 *
-	 * @param {string | null} namespaceURI
-	 * @returns {string | null}
-	 * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix
-	 * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo
-	 * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix
-	 * @see https://github.com/xmldom/xmldom/issues/322
-	 */
-    lookupPrefix:function(namespaceURI){
-    	var el = this;
-    	while(el){
-    		var map = el._nsMap;
-    		//console.dir(map)
-    		if(map){
-    			for(var n in map){
-						if (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) {
-							return n;
-						}
-    			}
-    		}
-    		el = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;
-    	}
-    	return null;
-    },
-    // Introduced in DOM Level 3:
-    lookupNamespaceURI:function(prefix){
-    	var el = this;
-    	while(el){
-    		var map = el._nsMap;
-    		//console.dir(map)
-    		if(map){
-    			if(Object.prototype.hasOwnProperty.call(map, prefix)){
-    				return map[prefix] ;
-    			}
-    		}
-    		el = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;
-    	}
-    	return null;
-    },
-    // Introduced in DOM Level 3:
-    isDefaultNamespace:function(namespaceURI){
-    	var prefix = this.lookupPrefix(namespaceURI);
-    	return prefix == null;
-    }
-};
-
-
-function _xmlEncoder(c){
-	return c == '<' && '&lt;' ||
-         c == '>' && '&gt;' ||
-         c == '&' && '&amp;' ||
-         c == '"' && '&quot;' ||
-         '&#'+c.charCodeAt()+';'
-}
-
-
-copy(NodeType,Node);
-copy(NodeType,Node.prototype);
-
-/**
- * @param callback return true for continue,false for break
- * @return boolean true: break visit;
- */
-function _visitNode(node,callback){
-	if(callback(node)){
-		return true;
-	}
-	if(node = node.firstChild){
-		do{
-			if(_visitNode(node,callback)){return true}
-        }while(node=node.nextSibling)
-    }
-}
-
-
-
-function Document(){
-	this.ownerDocument = this;
-}
-
-function _onAddAttribute(doc,el,newAttr){
-	doc && doc._inc++;
-	var ns = newAttr.namespaceURI ;
-	if(ns === NAMESPACE.XMLNS){
-		//update namespace
-		el._nsMap[newAttr.prefix?newAttr.localName:''] = newAttr.value
-	}
-}
-
-function _onRemoveAttribute(doc,el,newAttr,remove){
-	doc && doc._inc++;
-	var ns = newAttr.namespaceURI ;
-	if(ns === NAMESPACE.XMLNS){
-		//update namespace
-		delete el._nsMap[newAttr.prefix?newAttr.localName:'']
-	}
-}
-
-/**
- * Updates `el.childNodes`, updating the indexed items and it's `length`.
- * Passing `newChild` means it will be appended.
- * Otherwise it's assumed that an item has been removed,
- * and `el.firstNode` and it's `.nextSibling` are used
- * to walk the current list of child nodes.
- *
- * @param {Document} doc
- * @param {Node} el
- * @param {Node} [newChild]
- * @private
- */
-function _onUpdateChild (doc, el, newChild) {
-	if(doc && doc._inc){
-		doc._inc++;
-		//update childNodes
-		var cs = el.childNodes;
-		if (newChild) {
-			cs[cs.length++] = newChild;
-		} else {
-			var child = el.firstChild;
-			var i = 0;
-			while (child) {
-				cs[i++] = child;
-				child = child.nextSibling;
-			}
-			cs.length = i;
-			delete cs[cs.length];
-		}
-	}
-}
-
-/**
- * Removes the connections between `parentNode` and `child`
- * and any existing `child.previousSibling` or `child.nextSibling`.
- *
- * @see https://github.com/xmldom/xmldom/issues/135
- * @see https://github.com/xmldom/xmldom/issues/145
- *
- * @param {Node} parentNode
- * @param {Node} child
- * @returns {Node} the child that was removed.
- * @private
- */
-function _removeChild (parentNode, child) {
-	var previous = child.previousSibling;
-	var next = child.nextSibling;
-	if (previous) {
-		previous.nextSibling = next;
-	} else {
-		parentNode.firstChild = next;
-	}
-	if (next) {
-		next.previousSibling = previous;
-	} else {
-		parentNode.lastChild = previous;
-	}
-	child.parentNode = null;
-	child.previousSibling = null;
-	child.nextSibling = null;
-	_onUpdateChild(parentNode.ownerDocument, parentNode);
-	return child;
-}
-
-/**
- * Returns `true` if `node` can be a parent for insertion.
- * @param {Node} node
- * @returns {boolean}
- */
-function hasValidParentNodeType(node) {
-	return (
-		node &&
-		(node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE)
-	);
-}
-
-/**
- * Returns `true` if `node` can be inserted according to it's `nodeType`.
- * @param {Node} node
- * @returns {boolean}
- */
-function hasInsertableNodeType(node) {
-	return (
-		node &&
-		(isElementNode(node) ||
-			isTextNode(node) ||
-			isDocTypeNode(node) ||
-			node.nodeType === Node.DOCUMENT_FRAGMENT_NODE ||
-			node.nodeType === Node.COMMENT_NODE ||
-			node.nodeType === Node.PROCESSING_INSTRUCTION_NODE)
-	);
-}
-
-/**
- * Returns true if `node` is a DOCTYPE node
- * @param {Node} node
- * @returns {boolean}
- */
-function isDocTypeNode(node) {
-	return node && node.nodeType === Node.DOCUMENT_TYPE_NODE;
-}
-
-/**
- * Returns true if the node is an element
- * @param {Node} node
- * @returns {boolean}
- */
-function isElementNode(node) {
-	return node && node.nodeType === Node.ELEMENT_NODE;
-}
-/**
- * Returns true if `node` is a text node
- * @param {Node} node
- * @returns {boolean}
- */
-function isTextNode(node) {
-	return node && node.nodeType === Node.TEXT_NODE;
-}
-
-/**
- * Check if en element node can be inserted before `child`, or at the end if child is falsy,
- * according to the presence and position of a doctype node on the same level.
- *
- * @param {Document} doc The document node
- * @param {Node} child the node that would become the nextSibling if the element would be inserted
- * @returns {boolean} `true` if an element can be inserted before child
- * @private
- * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- */
-function isElementInsertionPossible(doc, child) {
-	var parentChildNodes = doc.childNodes || [];
-	if (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {
-		return false;
-	}
-	var docTypeNode = find(parentChildNodes, isDocTypeNode);
-	return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
-}
-
-/**
- * Check if en element node can be inserted before `child`, or at the end if child is falsy,
- * according to the presence and position of a doctype node on the same level.
- *
- * @param {Node} doc The document node
- * @param {Node} child the node that would become the nextSibling if the element would be inserted
- * @returns {boolean} `true` if an element can be inserted before child
- * @private
- * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- */
-function isElementReplacementPossible(doc, child) {
-	var parentChildNodes = doc.childNodes || [];
-
-	function hasElementChildThatIsNotChild(node) {
-		return isElementNode(node) && node !== child;
-	}
-
-	if (find(parentChildNodes, hasElementChildThatIsNotChild)) {
-		return false;
-	}
-	var docTypeNode = find(parentChildNodes, isDocTypeNode);
-	return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
-}
-
-/**
- * @private
- * Steps 1-5 of the checks before inserting and before replacing a child are the same.
- *
- * @param {Node} parent the parent node to insert `node` into
- * @param {Node} node the node to insert
- * @param {Node=} child the node that should become the `nextSibling` of `node`
- * @returns {Node}
- * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
- * @throws DOMException if `child` is provided but is not a child of `parent`.
- * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- * @see https://dom.spec.whatwg.org/#concept-node-replace
- */
-function assertPreInsertionValidity1to5(parent, node, child) {
-	// 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a "HierarchyRequestError" DOMException.
-	if (!hasValidParentNodeType(parent)) {
-		throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);
-	}
-	// 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a "HierarchyRequestError" DOMException.
-	// not implemented!
-	// 3. If `child` is non-null and its parent is not `parent`, then throw a "NotFoundError" DOMException.
-	if (child && child.parentNode !== parent) {
-		throw new DOMException(NOT_FOUND_ERR, 'child not in parent');
-	}
-	if (
-		// 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a "HierarchyRequestError" DOMException.
-		!hasInsertableNodeType(node) ||
-		// 5. If either `node` is a Text node and `parent` is a document,
-		// the sax parser currently adds top level text nodes, this will be fixed in 0.9.0
-		// || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)
-		// or `node` is a doctype and `parent` is not a document, then throw a "HierarchyRequestError" DOMException.
-		(isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE)
-	) {
-		throw new DOMException(
-			HIERARCHY_REQUEST_ERR,
-			'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType
-		);
-	}
-}
-
-/**
- * @private
- * Step 6 of the checks before inserting and before replacing a child are different.
- *
- * @param {Document} parent the parent node to insert `node` into
- * @param {Node} node the node to insert
- * @param {Node | undefined} child the node that should become the `nextSibling` of `node`
- * @returns {Node}
- * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
- * @throws DOMException if `child` is provided but is not a child of `parent`.
- * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- * @see https://dom.spec.whatwg.org/#concept-node-replace
- */
-function assertPreInsertionValidityInDocument(parent, node, child) {
-	var parentChildNodes = parent.childNodes || [];
-	var nodeChildNodes = node.childNodes || [];
-
-	// DocumentFragment
-	if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
-		var nodeChildElements = nodeChildNodes.filter(isElementNode);
-		// If node has more than one element child or has a Text node child.
-		if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
-		}
-		// Otherwise, if `node` has one element child and either `parent` has an element child,
-		// `child` is a doctype, or `child` is non-null and a doctype is following `child`.
-		if (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
-		}
-	}
-	// Element
-	if (isElementNode(node)) {
-		// `parent` has an element child, `child` is a doctype,
-		// or `child` is non-null and a doctype is following `child`.
-		if (!isElementInsertionPossible(parent, child)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
-		}
-	}
-	// DocumentType
-	if (isDocTypeNode(node)) {
-		// `parent` has a doctype child,
-		if (find(parentChildNodes, isDocTypeNode)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
-		}
-		var parentElementChild = find(parentChildNodes, isElementNode);
-		// `child` is non-null and an element is preceding `child`,
-		if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
-		}
-		// or `child` is null and `parent` has an element child.
-		if (!child && parentElementChild) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');
-		}
-	}
-}
-
-/**
- * @private
- * Step 6 of the checks before inserting and before replacing a child are different.
- *
- * @param {Document} parent the parent node to insert `node` into
- * @param {Node} node the node to insert
- * @param {Node | undefined} child the node that should become the `nextSibling` of `node`
- * @returns {Node}
- * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
- * @throws DOMException if `child` is provided but is not a child of `parent`.
- * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- * @see https://dom.spec.whatwg.org/#concept-node-replace
- */
-function assertPreReplacementValidityInDocument(parent, node, child) {
-	var parentChildNodes = parent.childNodes || [];
-	var nodeChildNodes = node.childNodes || [];
-
-	// DocumentFragment
-	if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
-		var nodeChildElements = nodeChildNodes.filter(isElementNode);
-		// If `node` has more than one element child or has a Text node child.
-		if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
-		}
-		// Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.
-		if (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
-		}
-	}
-	// Element
-	if (isElementNode(node)) {
-		// `parent` has an element child that is not `child` or a doctype is following `child`.
-		if (!isElementReplacementPossible(parent, child)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
-		}
-	}
-	// DocumentType
-	if (isDocTypeNode(node)) {
-		function hasDoctypeChildThatIsNotChild(node) {
-			return isDocTypeNode(node) && node !== child;
-		}
-
-		// `parent` has a doctype child that is not `child`,
-		if (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
-		}
-		var parentElementChild = find(parentChildNodes, isElementNode);
-		// or an element is preceding `child`.
-		if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
-			throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
-		}
-	}
-}
-
-/**
- * @private
- * @param {Node} parent the parent node to insert `node` into
- * @param {Node} node the node to insert
- * @param {Node=} child the node that should become the `nextSibling` of `node`
- * @returns {Node}
- * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
- * @throws DOMException if `child` is provided but is not a child of `parent`.
- * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- */
-function _insertBefore(parent, node, child, _inDocumentAssertion) {
-	// To ensure pre-insertion validity of a node into a parent before a child, run these steps:
-	assertPreInsertionValidity1to5(parent, node, child);
-
-	// If parent is a document, and any of the statements below, switched on the interface node implements,
-	// are true, then throw a "HierarchyRequestError" DOMException.
-	if (parent.nodeType === Node.DOCUMENT_NODE) {
-		(_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);
-	}
-
-	var cp = node.parentNode;
-	if(cp){
-		cp.removeChild(node);//remove and update
-	}
-	if(node.nodeType === DOCUMENT_FRAGMENT_NODE){
-		var newFirst = node.firstChild;
-		if (newFirst == null) {
-			return node;
-		}
-		var newLast = node.lastChild;
-	}else{
-		newFirst = newLast = node;
-	}
-	var pre = child ? child.previousSibling : parent.lastChild;
-
-	newFirst.previousSibling = pre;
-	newLast.nextSibling = child;
-
-
-	if(pre){
-		pre.nextSibling = newFirst;
-	}else{
-		parent.firstChild = newFirst;
-	}
-	if(child == null){
-		parent.lastChild = newLast;
-	}else{
-		child.previousSibling = newLast;
-	}
-	do{
-		newFirst.parentNode = parent;
-	}while(newFirst !== newLast && (newFirst= newFirst.nextSibling))
-	_onUpdateChild(parent.ownerDocument||parent, parent);
-	//console.log(parent.lastChild.nextSibling == null)
-	if (node.nodeType == DOCUMENT_FRAGMENT_NODE) {
-		node.firstChild = node.lastChild = null;
-	}
-	return node;
-}
-
-/**
- * Appends `newChild` to `parentNode`.
- * If `newChild` is already connected to a `parentNode` it is first removed from it.
- *
- * @see https://github.com/xmldom/xmldom/issues/135
- * @see https://github.com/xmldom/xmldom/issues/145
- * @param {Node} parentNode
- * @param {Node} newChild
- * @returns {Node}
- * @private
- */
-function _appendSingleChild (parentNode, newChild) {
-	if (newChild.parentNode) {
-		newChild.parentNode.removeChild(newChild);
-	}
-	newChild.parentNode = parentNode;
-	newChild.previousSibling = parentNode.lastChild;
-	newChild.nextSibling = null;
-	if (newChild.previousSibling) {
-		newChild.previousSibling.nextSibling = newChild;
-	} else {
-		parentNode.firstChild = newChild;
-	}
-	parentNode.lastChild = newChild;
-	_onUpdateChild(parentNode.ownerDocument, parentNode, newChild);
-	return newChild;
-}
-
-Document.prototype = {
-	//implementation : null,
-	nodeName :  '#document',
-	nodeType :  DOCUMENT_NODE,
-	/**
-	 * The DocumentType node of the document.
-	 *
-	 * @readonly
-	 * @type DocumentType
-	 */
-	doctype :  null,
-	documentElement :  null,
-	_inc : 1,
-
-	insertBefore :  function(newChild, refChild){//raises
-		if(newChild.nodeType == DOCUMENT_FRAGMENT_NODE){
-			var child = newChild.firstChild;
-			while(child){
-				var next = child.nextSibling;
-				this.insertBefore(child,refChild);
-				child = next;
-			}
-			return newChild;
-		}
-		_insertBefore(this, newChild, refChild);
-		newChild.ownerDocument = this;
-		if (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {
-			this.documentElement = newChild;
-		}
-
-		return newChild;
-	},
-	removeChild :  function(oldChild){
-		if(this.documentElement == oldChild){
-			this.documentElement = null;
-		}
-		return _removeChild(this,oldChild);
-	},
-	replaceChild: function (newChild, oldChild) {
-		//raises
-		_insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);
-		newChild.ownerDocument = this;
-		if (oldChild) {
-			this.removeChild(oldChild);
-		}
-		if (isElementNode(newChild)) {
-			this.documentElement = newChild;
-		}
-	},
-	// Introduced in DOM Level 2:
-	importNode : function(importedNode,deep){
-		return importNode(this,importedNode,deep);
-	},
-	// Introduced in DOM Level 2:
-	getElementById :	function(id){
-		var rtv = null;
-		_visitNode(this.documentElement,function(node){
-			if(node.nodeType == ELEMENT_NODE){
-				if(node.getAttribute('id') == id){
-					rtv = node;
-					return true;
-				}
-			}
-		})
-		return rtv;
-	},
-
-	/**
-	 * The `getElementsByClassName` method of `Document` interface returns an array-like object
-	 * of all child elements which have **all** of the given class name(s).
-	 *
-	 * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.
-	 *
-	 *
-	 * Warning: This is a live LiveNodeList.
-	 * Changes in the DOM will reflect in the array as the changes occur.
-	 * If an element selected by this array no longer qualifies for the selector,
-	 * it will automatically be removed. Be aware of this for iteration purposes.
-	 *
-	 * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace
-	 *
-	 * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName
-	 * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname
-	 */
-	getElementsByClassName: function(classNames) {
-		var classNamesSet = toOrderedSet(classNames)
-		return new LiveNodeList(this, function(base) {
-			var ls = [];
-			if (classNamesSet.length > 0) {
-				_visitNode(base.documentElement, function(node) {
-					if(node !== base && node.nodeType === ELEMENT_NODE) {
-						var nodeClassNames = node.getAttribute('class')
-						// can be null if the attribute does not exist
-						if (nodeClassNames) {
-							// before splitting and iterating just compare them for the most common case
-							var matches = classNames === nodeClassNames;
-							if (!matches) {
-								var nodeClassNamesSet = toOrderedSet(nodeClassNames)
-								matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet))
-							}
-							if(matches) {
-								ls.push(node);
-							}
-						}
-					}
-				});
-			}
-			return ls;
-		});
-	},
-
-	//document factory method:
-	createElement :	function(tagName){
-		var node = new Element();
-		node.ownerDocument = this;
-		node.nodeName = tagName;
-		node.tagName = tagName;
-		node.localName = tagName;
-		node.childNodes = new NodeList();
-		var attrs	= node.attributes = new NamedNodeMap();
-		attrs._ownerElement = node;
-		return node;
-	},
-	createDocumentFragment :	function(){
-		var node = new DocumentFragment();
-		node.ownerDocument = this;
-		node.childNodes = new NodeList();
-		return node;
-	},
-	createTextNode :	function(data){
-		var node = new Text();
-		node.ownerDocument = this;
-		node.appendData(data)
-		return node;
-	},
-	createComment :	function(data){
-		var node = new Comment();
-		node.ownerDocument = this;
-		node.appendData(data)
-		return node;
-	},
-	createCDATASection :	function(data){
-		var node = new CDATASection();
-		node.ownerDocument = this;
-		node.appendData(data)
-		return node;
-	},
-	createProcessingInstruction :	function(target,data){
-		var node = new ProcessingInstruction();
-		node.ownerDocument = this;
-		node.tagName = node.target = target;
-		node.nodeValue= node.data = data;
-		return node;
-	},
-	createAttribute :	function(name){
-		var node = new Attr();
-		node.ownerDocument	= this;
-		node.name = name;
-		node.nodeName	= name;
-		node.localName = name;
-		node.specified = true;
-		return node;
-	},
-	createEntityReference :	function(name){
-		var node = new EntityReference();
-		node.ownerDocument	= this;
-		node.nodeName	= name;
-		return node;
-	},
-	// Introduced in DOM Level 2:
-	createElementNS :	function(namespaceURI,qualifiedName){
-		var node = new Element();
-		var pl = qualifiedName.split(':');
-		var attrs	= node.attributes = new NamedNodeMap();
-		node.childNodes = new NodeList();
-		node.ownerDocument = this;
-		node.nodeName = qualifiedName;
-		node.tagName = qualifiedName;
-		node.namespaceURI = namespaceURI;
-		if(pl.length == 2){
-			node.prefix = pl[0];
-			node.localName = pl[1];
-		}else{
-			//el.prefix = null;
-			node.localName = qualifiedName;
-		}
-		attrs._ownerElement = node;
-		return node;
-	},
-	// Introduced in DOM Level 2:
-	createAttributeNS :	function(namespaceURI,qualifiedName){
-		var node = new Attr();
-		var pl = qualifiedName.split(':');
-		node.ownerDocument = this;
-		node.nodeName = qualifiedName;
-		node.name = qualifiedName;
-		node.namespaceURI = namespaceURI;
-		node.specified = true;
-		if(pl.length == 2){
-			node.prefix = pl[0];
-			node.localName = pl[1];
-		}else{
-			//el.prefix = null;
-			node.localName = qualifiedName;
-		}
-		return node;
-	}
-};
-_extends(Document,Node);
-
-
-function Element() {
-	this._nsMap = {};
-};
-Element.prototype = {
-	nodeType : ELEMENT_NODE,
-	hasAttribute : function(name){
-		return this.getAttributeNode(name)!=null;
-	},
-	getAttribute : function(name){
-		var attr = this.getAttributeNode(name);
-		return attr && attr.value || '';
-	},
-	getAttributeNode : function(name){
-		return this.attributes.getNamedItem(name);
-	},
-	setAttribute : function(name, value){
-		var attr = this.ownerDocument.createAttribute(name);
-		attr.value = attr.nodeValue = "" + value;
-		this.setAttributeNode(attr)
-	},
-	removeAttribute : function(name){
-		var attr = this.getAttributeNode(name)
-		attr && this.removeAttributeNode(attr);
-	},
-
-	//four real opeartion method
-	appendChild:function(newChild){
-		if(newChild.nodeType === DOCUMENT_FRAGMENT_NODE){
-			return this.insertBefore(newChild,null);
-		}else{
-			return _appendSingleChild(this,newChild);
-		}
-	},
-	setAttributeNode : function(newAttr){
-		return this.attributes.setNamedItem(newAttr);
-	},
-	setAttributeNodeNS : function(newAttr){
-		return this.attributes.setNamedItemNS(newAttr);
-	},
-	removeAttributeNode : function(oldAttr){
-		//console.log(this == oldAttr.ownerElement)
-		return this.attributes.removeNamedItem(oldAttr.nodeName);
-	},
-	//get real attribute name,and remove it by removeAttributeNode
-	removeAttributeNS : function(namespaceURI, localName){
-		var old = this.getAttributeNodeNS(namespaceURI, localName);
-		old && this.removeAttributeNode(old);
-	},
-
-	hasAttributeNS : function(namespaceURI, localName){
-		return this.getAttributeNodeNS(namespaceURI, localName)!=null;
-	},
-	getAttributeNS : function(namespaceURI, localName){
-		var attr = this.getAttributeNodeNS(namespaceURI, localName);
-		return attr && attr.value || '';
-	},
-	setAttributeNS : function(namespaceURI, qualifiedName, value){
-		var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);
-		attr.value = attr.nodeValue = "" + value;
-		this.setAttributeNode(attr)
-	},
-	getAttributeNodeNS : function(namespaceURI, localName){
-		return this.attributes.getNamedItemNS(namespaceURI, localName);
-	},
-
-	getElementsByTagName : function(tagName){
-		return new LiveNodeList(this,function(base){
-			var ls = [];
-			_visitNode(base,function(node){
-				if(node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)){
-					ls.push(node);
-				}
-			});
-			return ls;
-		});
-	},
-	getElementsByTagNameNS : function(namespaceURI, localName){
-		return new LiveNodeList(this,function(base){
-			var ls = [];
-			_visitNode(base,function(node){
-				if(node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)){
-					ls.push(node);
-				}
-			});
-			return ls;
-
-		});
-	}
-};
-Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;
-Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;
-
-
-_extends(Element,Node);
-function Attr() {
-};
-Attr.prototype.nodeType = ATTRIBUTE_NODE;
-_extends(Attr,Node);
-
-
-function CharacterData() {
-};
-CharacterData.prototype = {
-	data : '',
-	substringData : function(offset, count) {
-		return this.data.substring(offset, offset+count);
-	},
-	appendData: function(text) {
-		text = this.data+text;
-		this.nodeValue = this.data = text;
-		this.length = text.length;
-	},
-	insertData: function(offset,text) {
-		this.replaceData(offset,0,text);
-
-	},
-	appendChild:function(newChild){
-		throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR])
-	},
-	deleteData: function(offset, count) {
-		this.replaceData(offset,count,"");
-	},
-	replaceData: function(offset, count, text) {
-		var start = this.data.substring(0,offset);
-		var end = this.data.substring(offset+count);
-		text = start + text + end;
-		this.nodeValue = this.data = text;
-		this.length = text.length;
-	}
-}
-_extends(CharacterData,Node);
-function Text() {
-};
-Text.prototype = {
-	nodeName : "#text",
-	nodeType : TEXT_NODE,
-	splitText : function(offset) {
-		var text = this.data;
-		var newText = text.substring(offset);
-		text = text.substring(0, offset);
-		this.data = this.nodeValue = text;
-		this.length = text.length;
-		var newNode = this.ownerDocument.createTextNode(newText);
-		if(this.parentNode){
-			this.parentNode.insertBefore(newNode, this.nextSibling);
-		}
-		return newNode;
-	}
-}
-_extends(Text,CharacterData);
-function Comment() {
-};
-Comment.prototype = {
-	nodeName : "#comment",
-	nodeType : COMMENT_NODE
-}
-_extends(Comment,CharacterData);
-
-function CDATASection() {
-};
-CDATASection.prototype = {
-	nodeName : "#cdata-section",
-	nodeType : CDATA_SECTION_NODE
-}
-_extends(CDATASection,CharacterData);
-
-
-function DocumentType() {
-};
-DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;
-_extends(DocumentType,Node);
-
-function Notation() {
-};
-Notation.prototype.nodeType = NOTATION_NODE;
-_extends(Notation,Node);
-
-function Entity() {
-};
-Entity.prototype.nodeType = ENTITY_NODE;
-_extends(Entity,Node);
-
-function EntityReference() {
-};
-EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;
-_extends(EntityReference,Node);
-
-function DocumentFragment() {
-};
-DocumentFragment.prototype.nodeName =	"#document-fragment";
-DocumentFragment.prototype.nodeType =	DOCUMENT_FRAGMENT_NODE;
-_extends(DocumentFragment,Node);
-
-
-function ProcessingInstruction() {
-}
-ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;
-_extends(ProcessingInstruction,Node);
-function XMLSerializer(){}
-XMLSerializer.prototype.serializeToString = function(node,isHtml,nodeFilter){
-	return nodeSerializeToString.call(node,isHtml,nodeFilter);
-}
-Node.prototype.toString = nodeSerializeToString;
-function nodeSerializeToString(isHtml,nodeFilter){
-	var buf = [];
-	var refNode = this.nodeType == 9 && this.documentElement || this;
-	var prefix = refNode.prefix;
-	var uri = refNode.namespaceURI;
-
-	if(uri && prefix == null){
-		//console.log(prefix)
-		var prefix = refNode.lookupPrefix(uri);
-		if(prefix == null){
-			//isHTML = true;
-			var visibleNamespaces=[
-			{namespace:uri,prefix:null}
-			//{namespace:uri,prefix:''}
-			]
-		}
-	}
-	serializeToString(this,buf,isHtml,nodeFilter,visibleNamespaces);
-	//console.log('###',this.nodeType,uri,prefix,buf.join(''))
-	return buf.join('');
-}
-
-function needNamespaceDefine(node, isHTML, visibleNamespaces) {
-	var prefix = node.prefix || '';
-	var uri = node.namespaceURI;
-	// According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,
-	// and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :
-	// > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.
-	// in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)
-	// and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :
-	// > [...] Furthermore, the attribute value [...] must not be an empty string.
-	// so serializing empty namespace value like xmlns:ds="" would produce an invalid XML document.
-	if (!uri) {
-		return false;
-	}
-	if (prefix === "xml" && uri === NAMESPACE.XML || uri === NAMESPACE.XMLNS) {
-		return false;
-	}
-
-	var i = visibleNamespaces.length
-	while (i--) {
-		var ns = visibleNamespaces[i];
-		// get namespace prefix
-		if (ns.prefix === prefix) {
-			return ns.namespace !== uri;
-		}
-	}
-	return true;
-}
-/**
- * Well-formed constraint: No < in Attribute Values
- * > The replacement text of any entity referred to directly or indirectly
- * > in an attribute value must not contain a <.
- * @see https://www.w3.org/TR/xml11/#CleanAttrVals
- * @see https://www.w3.org/TR/xml11/#NT-AttValue
- *
- * Literal whitespace other than space that appear in attribute values
- * are serialized as their entity references, so they will be preserved.
- * (In contrast to whitespace literals in the input which are normalized to spaces)
- * @see https://www.w3.org/TR/xml11/#AVNormalize
- * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes
- */
-function addSerializedAttribute(buf, qualifiedName, value) {
-	buf.push(' ', qualifiedName, '="', value.replace(/[<>&"\t\n\r]/g, _xmlEncoder), '"')
-}
-
-function serializeToString(node,buf,isHTML,nodeFilter,visibleNamespaces){
-	if (!visibleNamespaces) {
-		visibleNamespaces = [];
-	}
-
-	if(nodeFilter){
-		node = nodeFilter(node);
-		if(node){
-			if(typeof node == 'string'){
-				buf.push(node);
-				return;
-			}
-		}else{
-			return;
-		}
-		//buf.sort.apply(attrs, attributeSorter);
-	}
-
-	switch(node.nodeType){
-	case ELEMENT_NODE:
-		var attrs = node.attributes;
-		var len = attrs.length;
-		var child = node.firstChild;
-		var nodeName = node.tagName;
-
-		isHTML = NAMESPACE.isHTML(node.namespaceURI) || isHTML
-
-		var prefixedNodeName = nodeName
-		if (!isHTML && !node.prefix && node.namespaceURI) {
-			var defaultNS
-			// lookup current default ns from `xmlns` attribute
-			for (var ai = 0; ai < attrs.length; ai++) {
-				if (attrs.item(ai).name === 'xmlns') {
-					defaultNS = attrs.item(ai).value
-					break
-				}
-			}
-			if (!defaultNS) {
-				// lookup current default ns in visibleNamespaces
-				for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
-					var namespace = visibleNamespaces[nsi]
-					if (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {
-						defaultNS = namespace.namespace
-						break
-					}
-				}
-			}
-			if (defaultNS !== node.namespaceURI) {
-				for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
-					var namespace = visibleNamespaces[nsi]
-					if (namespace.namespace === node.namespaceURI) {
-						if (namespace.prefix) {
-							prefixedNodeName = namespace.prefix + ':' + nodeName
-						}
-						break
-					}
-				}
-			}
-		}
-
-		buf.push('<', prefixedNodeName);
-
-		for(var i=0;i<len;i++){
-			// add namespaces for attributes
-			var attr = attrs.item(i);
-			if (attr.prefix == 'xmlns') {
-				visibleNamespaces.push({ prefix: attr.localName, namespace: attr.value });
-			}else if(attr.nodeName == 'xmlns'){
-				visibleNamespaces.push({ prefix: '', namespace: attr.value });
-			}
-		}
-
-		for(var i=0;i<len;i++){
-			var attr = attrs.item(i);
-			if (needNamespaceDefine(attr,isHTML, visibleNamespaces)) {
-				var prefix = attr.prefix||'';
-				var uri = attr.namespaceURI;
-				addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
-				visibleNamespaces.push({ prefix: prefix, namespace:uri });
-			}
-			serializeToString(attr,buf,isHTML,nodeFilter,visibleNamespaces);
-		}
-
-		// add namespace for current node
-		if (nodeName === prefixedNodeName && needNamespaceDefine(node, isHTML, visibleNamespaces)) {
-			var prefix = node.prefix||'';
-			var uri = node.namespaceURI;
-			addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
-			visibleNamespaces.push({ prefix: prefix, namespace:uri });
-		}
-
-		if(child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)){
-			buf.push('>');
-			//if is cdata child node
-			if(isHTML && /^script$/i.test(nodeName)){
-				while(child){
-					if(child.data){
-						buf.push(child.data);
-					}else{
-						serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
-					}
-					child = child.nextSibling;
-				}
-			}else
-			{
-				while(child){
-					serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
-					child = child.nextSibling;
-				}
-			}
-			buf.push('</',prefixedNodeName,'>');
-		}else{
-			buf.push('/>');
-		}
-		// remove added visible namespaces
-		//visibleNamespaces.length = startVisibleNamespaces;
-		return;
-	case DOCUMENT_NODE:
-	case DOCUMENT_FRAGMENT_NODE:
-		var child = node.firstChild;
-		while(child){
-			serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
-			child = child.nextSibling;
-		}
-		return;
-	case ATTRIBUTE_NODE:
-		return addSerializedAttribute(buf, node.name, node.value);
-	case TEXT_NODE:
-		/**
-		 * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,
-		 * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.
-		 * If they are needed elsewhere, they must be escaped using either numeric character references or the strings
-		 * `&amp;` and `&lt;` respectively.
-		 * The right angle bracket (>) may be represented using the string " &gt; ", and must, for compatibility,
-		 * be escaped using either `&gt;` or a character reference when it appears in the string `]]>` in content,
-		 * when that string is not marking the end of a CDATA section.
-		 *
-		 * In the content of elements, character data is any string of characters
-		 * which does not contain the start-delimiter of any markup
-		 * and does not include the CDATA-section-close delimiter, `]]>`.
-		 *
-		 * @see https://www.w3.org/TR/xml/#NT-CharData
-		 * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node
-		 */
-		return buf.push(node.data
-			.replace(/[<&>]/g,_xmlEncoder)
-		);
-	case CDATA_SECTION_NODE:
-		return buf.push( '<![CDATA[',node.data,']]>');
-	case COMMENT_NODE:
-		return buf.push( "<!--",node.data,"-->");
-	case DOCUMENT_TYPE_NODE:
-		var pubid = node.publicId;
-		var sysid = node.systemId;
-		buf.push('<!DOCTYPE ',node.name);
-		if(pubid){
-			buf.push(' PUBLIC ', pubid);
-			if (sysid && sysid!='.') {
-				buf.push(' ', sysid);
-			}
-			buf.push('>');
-		}else if(sysid && sysid!='.'){
-			buf.push(' SYSTEM ', sysid, '>');
-		}else{
-			var sub = node.internalSubset;
-			if(sub){
-				buf.push(" [",sub,"]");
-			}
-			buf.push(">");
-		}
-		return;
-	case PROCESSING_INSTRUCTION_NODE:
-		return buf.push( "<?",node.target," ",node.data,"?>");
-	case ENTITY_REFERENCE_NODE:
-		return buf.push( '&',node.nodeName,';');
-	//case ENTITY_NODE:
-	//case NOTATION_NODE:
-	default:
-		buf.push('??',node.nodeName);
-	}
-}
-function importNode(doc,node,deep){
-	var node2;
-	switch (node.nodeType) {
-	case ELEMENT_NODE:
-		node2 = node.cloneNode(false);
-		node2.ownerDocument = doc;
-		//var attrs = node2.attributes;
-		//var len = attrs.length;
-		//for(var i=0;i<len;i++){
-			//node2.setAttributeNodeNS(importNode(doc,attrs.item(i),deep));
-		//}
-	case DOCUMENT_FRAGMENT_NODE:
-		break;
-	case ATTRIBUTE_NODE:
-		deep = true;
-		break;
-	//case ENTITY_REFERENCE_NODE:
-	//case PROCESSING_INSTRUCTION_NODE:
-	////case TEXT_NODE:
-	//case CDATA_SECTION_NODE:
-	//case COMMENT_NODE:
-	//	deep = false;
-	//	break;
-	//case DOCUMENT_NODE:
-	//case DOCUMENT_TYPE_NODE:
-	//cannot be imported.
-	//case ENTITY_NODE:
-	//case NOTATION_NODE：
-	//can not hit in level3
-	//default:throw e;
-	}
-	if(!node2){
-		node2 = node.cloneNode(false);//false
-	}
-	node2.ownerDocument = doc;
-	node2.parentNode = null;
-	if(deep){
-		var child = node.firstChild;
-		while(child){
-			node2.appendChild(importNode(doc,child,deep));
-			child = child.nextSibling;
-		}
-	}
-	return node2;
-}
-//
-//var _relationMap = {firstChild:1,lastChild:1,previousSibling:1,nextSibling:1,
-//					attributes:1,childNodes:1,parentNode:1,documentElement:1,doctype,};
-function cloneNode(doc,node,deep){
-	var node2 = new node.constructor();
-	for (var n in node) {
-		if (Object.prototype.hasOwnProperty.call(node, n)) {
-			var v = node[n];
-			if (typeof v != "object") {
-				if (v != node2[n]) {
-					node2[n] = v;
-				}
-			}
-		}
-	}
-	if(node.childNodes){
-		node2.childNodes = new NodeList();
-	}
-	node2.ownerDocument = doc;
-	switch (node2.nodeType) {
-	case ELEMENT_NODE:
-		var attrs	= node.attributes;
-		var attrs2	= node2.attributes = new NamedNodeMap();
-		var len = attrs.length
-		attrs2._ownerElement = node2;
-		for(var i=0;i<len;i++){
-			node2.setAttributeNode(cloneNode(doc,attrs.item(i),true));
-		}
-		break;;
-	case ATTRIBUTE_NODE:
-		deep = true;
-	}
-	if(deep){
-		var child = node.firstChild;
-		while(child){
-			node2.appendChild(cloneNode(doc,child,deep));
-			child = child.nextSibling;
-		}
-	}
-	return node2;
-}
-
-function __set__(object,key,value){
-	object[key] = value
-}
-//do dynamic
-try{
-	if(Object.defineProperty){
-		Object.defineProperty(LiveNodeList.prototype,'length',{
-			get:function(){
-				_updateLiveList(this);
-				return this.$$length;
-			}
-		});
-
-		Object.defineProperty(Node.prototype,'textContent',{
-			get:function(){
-				return getTextContent(this);
-			},
-
-			set:function(data){
-				switch(this.nodeType){
-				case ELEMENT_NODE:
-				case DOCUMENT_FRAGMENT_NODE:
-					while(this.firstChild){
-						this.removeChild(this.firstChild);
-					}
-					if(data || String(data)){
-						this.appendChild(this.ownerDocument.createTextNode(data));
-					}
-					break;
-
-				default:
-					this.data = data;
-					this.value = data;
-					this.nodeValue = data;
-				}
-			}
-		})
-
-		function getTextContent(node){
-			switch(node.nodeType){
-			case ELEMENT_NODE:
-			case DOCUMENT_FRAGMENT_NODE:
-				var buf = [];
-				node = node.firstChild;
-				while(node){
-					if(node.nodeType!==7 && node.nodeType !==8){
-						buf.push(getTextContent(node));
-					}
-					node = node.nextSibling;
-				}
-				return buf.join('');
-			default:
-				return node.nodeValue;
-			}
-		}
-
-		__set__ = function(object,key,value){
-			//console.log(value)
-			object['$$'+key] = value
-		}
-	}
-}catch(e){//ie8
-}
-
-/**
- * The entities that are predefined in every XML document.
- *
- * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1
- * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0
- * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML Wikipedia
- */
-XML_ENTITIES = freeze({amp:'&', apos:"'", gt:'>', lt:'<', quot:'"'})
-
-/**
- * A map of currently 241 entities that are detected in an HTML document.
- * They contain all entries from `XML_ENTITIES`.
- *
- * @see XML_ENTITIES
- * @see DOMParser.parseFromString
- * @see DOMImplementation.prototype.createHTMLDocument
- * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec
- * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names
- * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML
- * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)
- * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)
- */
-HTML_ENTITIES = freeze({
-       lt: '<',
-       gt: '>',
-       amp: '&',
-       quot: '"',
-       apos: "'",
-       Agrave: "À",
-       Aacute: "Á",
-       Acirc: "Â",
-       Atilde: "Ã",
-       Auml: "Ä",
-       Aring: "Å",
-       AElig: "Æ",
-       Ccedil: "Ç",
-       Egrave: "È",
-       Eacute: "É",
-       Ecirc: "Ê",
-       Euml: "Ë",
-       Igrave: "Ì",
-       Iacute: "Í",
-       Icirc: "Î",
-       Iuml: "Ï",
-       ETH: "Ð",
-       Ntilde: "Ñ",
-       Ograve: "Ò",
-       Oacute: "Ó",
-       Ocirc: "Ô",
-       Otilde: "Õ",
-       Ouml: "Ö",
-       Oslash: "Ø",
-       Ugrave: "Ù",
-       Uacute: "Ú",
-       Ucirc: "Û",
-       Uuml: "Ü",
-       Yacute: "Ý",
-       THORN: "Þ",
-       szlig: "ß",
-       agrave: "à",
-       aacute: "á",
-       acirc: "â",
-       atilde: "ã",
-       auml: "ä",
-       aring: "å",
-       aelig: "æ",
-       ccedil: "ç",
-       egrave: "è",
-       eacute: "é",
-       ecirc: "ê",
-       euml: "ë",
-       igrave: "ì",
-       iacute: "í",
-       icirc: "î",
-       iuml: "ï",
-       eth: "ð",
-       ntilde: "ñ",
-       ograve: "ò",
-       oacute: "ó",
-       ocirc: "ô",
-       otilde: "õ",
-       ouml: "ö",
-       oslash: "ø",
-       ugrave: "ù",
-       uacute: "ú",
-       ucirc: "û",
-       uuml: "ü",
-       yacute: "ý",
-       thorn: "þ",
-       yuml: "ÿ",
-       nbsp: "\u00a0",
-       iexcl: "¡",
-       cent: "¢",
-       pound: "£",
-       curren: "¤",
-       yen: "¥",
-       brvbar: "¦",
-       sect: "§",
-       uml: "¨",
-       copy: "©",
-       ordf: "ª",
-       laquo: "«",
-       not: "¬",
-       shy: "­­",
-       reg: "®",
-       macr: "¯",
-       deg: "°",
-       plusmn: "±",
-       sup2: "²",
-       sup3: "³",
-       acute: "´",
-       micro: "µ",
-       para: "¶",
-       middot: "·",
-       cedil: "¸",
-       sup1: "¹",
-       ordm: "º",
-       raquo: "»",
-       frac14: "¼",
-       frac12: "½",
-       frac34: "¾",
-       iquest: "¿",
-       times: "×",
-       divide: "÷",
-       forall: "∀",
-       part: "∂",
-       exist: "∃",
-       empty: "∅",
-       nabla: "∇",
-       isin: "∈",
-       notin: "∉",
-       ni: "∋",
-       prod: "∏",
-       sum: "∑",
-       minus: "−",
-       lowast: "∗",
-       radic: "√",
-       prop: "∝",
-       infin: "∞",
-       ang: "∠",
-       and: "∧",
-       or: "∨",
-       cap: "∩",
-       cup: "∪",
-       'int': "∫",
-       there4: "∴",
-       sim: "∼",
-       cong: "≅",
-       asymp: "≈",
-       ne: "≠",
-       equiv: "≡",
-       le: "≤",
-       ge: "≥",
-       sub: "⊂",
-       sup: "⊃",
-       nsub: "⊄",
-       sube: "⊆",
-       supe: "⊇",
-       oplus: "⊕",
-       otimes: "⊗",
-       perp: "⊥",
-       sdot: "⋅",
-       Alpha: "Α",
-       Beta: "Β",
-       Gamma: "Γ",
-       Delta: "Δ",
-       Epsilon: "Ε",
-       Zeta: "Ζ",
-       Eta: "Η",
-       Theta: "Θ",
-       Iota: "Ι",
-       Kappa: "Κ",
-       Lambda: "Λ",
-       Mu: "Μ",
-       Nu: "Ν",
-       Xi: "Ξ",
-       Omicron: "Ο",
-       Pi: "Π",
-       Rho: "Ρ",
-       Sigma: "Σ",
-       Tau: "Τ",
-       Upsilon: "Υ",
-       Phi: "Φ",
-       Chi: "Χ",
-       Psi: "Ψ",
-       Omega: "Ω",
-       alpha: "α",
-       beta: "β",
-       gamma: "γ",
-       delta: "δ",
-       epsilon: "ε",
-       zeta: "ζ",
-       eta: "η",
-       theta: "θ",
-       iota: "ι",
-       kappa: "κ",
-       lambda: "λ",
-       mu: "μ",
-       nu: "ν",
-       xi: "ξ",
-       omicron: "ο",
-       pi: "π",
-       rho: "ρ",
-       sigmaf: "ς",
-       sigma: "σ",
-       tau: "τ",
-       upsilon: "υ",
-       phi: "φ",
-       chi: "χ",
-       psi: "ψ",
-       omega: "ω",
-       thetasym: "ϑ",
-       upsih: "ϒ",
-       piv: "ϖ",
-       OElig: "Œ",
-       oelig: "œ",
-       Scaron: "Š",
-       scaron: "š",
-       Yuml: "Ÿ",
-       fnof: "ƒ",
-       circ: "ˆ",
-       tilde: "˜",
-       ensp: " ",
-       emsp: " ",
-       thinsp: " ",
-       zwnj: "‌",
-       zwj: "‍",
-       lrm: "‎",
-       rlm: "‏",
-       ndash: "–",
-       mdash: "—",
-       lsquo: "‘",
-       rsquo: "’",
-       sbquo: "‚",
-       ldquo: "“",
-       rdquo: "”",
-       bdquo: "„",
-       dagger: "†",
-       Dagger: "‡",
-       bull: "•",
-       hellip: "…",
-       permil: "‰",
-       prime: "′",
-       Prime: "″",
-       lsaquo: "‹",
-       rsaquo: "›",
-       oline: "‾",
-       euro: "€",
-       trade: "™",
-       larr: "←",
-       uarr: "↑",
-       rarr: "→",
-       darr: "↓",
-       harr: "↔",
-       crarr: "↵",
-       lceil: "⌈",
-       rceil: "⌉",
-       lfloor: "⌊",
-       rfloor: "⌋",
-       loz: "◊",
-       spades: "♠",
-       clubs: "♣",
-       hearts: "♥",
-       diams: "♦"
-});
-
-//[4]   	NameStartChar	   ::=   	":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
-//[4a]   	NameChar	   ::=   	NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
-//[5]   	Name	   ::=   	NameStartChar (NameChar)*
-var nameStartChar = /[A-Z_a-z\xC0-\xD6\xD8-\xF6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]///\u10000-\uEFFFF
-var nameChar = new RegExp("[\\-\\.0-9"+nameStartChar.source.slice(1,-1)+"\\u00B7\\u0300-\\u036F\\u203F-\\u2040]");
-var tagNamePattern = new RegExp('^'+nameStartChar.source+nameChar.source+'*(?:\:'+nameStartChar.source+nameChar.source+'*)?$');
-//var tagNamePattern = /^[a-zA-Z_][\w\-\.]*(?:\:[a-zA-Z_][\w\-\.]*)?$/
-//var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')
-
-//S_TAG,	S_ATTR,	S_EQ,	S_ATTR_NOQUOT_VALUE
-//S_ATTR_SPACE,	S_ATTR_END,	S_TAG_SPACE, S_TAG_CLOSE
-var S_TAG = 0;//tag name offerring
-var S_ATTR = 1;//attr name offerring
-var S_ATTR_SPACE=2;//attr name end and space offer
-var S_EQ = 3;//=space?
-var S_ATTR_NOQUOT_VALUE = 4;//attr value(no quot value only)
-var S_ATTR_END = 5;//attr value end and no space(quot end)
-var S_TAG_SPACE = 6;//(attr value end || tag end ) && (space offer)
-var S_TAG_CLOSE = 7;//closed el<el />
-
-/**
- * Creates an error that will not be caught by XMLReader aka the SAX parser.
- *
- * @param {string} message
- * @param {any?} locator Optional, can provide details about the location in the source
- * @constructor
- */
-function ParseError(message, locator) {
-	this.message = message
-	this.locator = locator
-	if(Error.captureStackTrace) Error.captureStackTrace(this, ParseError);
-}
-ParseError.prototype = new Error();
-ParseError.prototype.name = ParseError.name
-
-function XMLReader(){
-
-}
-
-XMLReader.prototype = {
-	parse:function(source,defaultNSMap,entityMap){
-		var domBuilder = this.domBuilder;
-		domBuilder.startDocument();
-		_copy(defaultNSMap ,defaultNSMap = {})
-		parse(source,defaultNSMap,entityMap,
-				domBuilder,this.errorHandler);
-		domBuilder.endDocument();
-	}
-}
-function parse(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){
-	function fixedFromCharCode(code) {
-		// String.prototype.fromCharCode does not supports
-		// > 2 bytes unicode chars directly
-		if (code > 0xffff) {
-			code -= 0x10000;
-			var surrogate1 = 0xd800 + (code >> 10)
-				, surrogate2 = 0xdc00 + (code & 0x3ff);
-
-			return String.fromCharCode(surrogate1, surrogate2);
-		} else {
-			return String.fromCharCode(code);
-		}
-	}
-	function entityReplacer(a){
-		var k = a.slice(1,-1);
-		if (Object.hasOwnProperty.call(entityMap, k)) {
-			return entityMap[k];
-		}else if(k.charAt(0) === '#'){
-			return fixedFromCharCode(parseInt(k.substr(1).replace('x','0x')))
-		}else{
-			errorHandler.error('entity not found:'+a);
-			return a;
-		}
-	}
-	function appendText(end){//has some bugs
-		if(end>start){
-			var xt = source.substring(start,end).replace(/&#?\w+;/g,entityReplacer);
-			locator&&position(start);
-			domBuilder.characters(xt,0,end-start);
-			start = end
-		}
-	}
-	function position(p,m){
-		while(p>=lineEnd && (m = linePattern.exec(source))){
-			lineStart = m.index;
-			lineEnd = lineStart + m[0].length;
-			locator.lineNumber++;
-			//console.log('line++:',locator,startPos,endPos)
-		}
-		locator.columnNumber = p-lineStart+1;
-	}
-	var lineStart = 0;
-	var lineEnd = 0;
-	var linePattern = /.*(?:\r\n?|\n)|.*$/g
-	var locator = domBuilder.locator;
-
-	var parseStack = [{currentNSMap:defaultNSMapCopy}]
-	var closeMap = {};
-	var start = 0;
-	while(true){
-		try{
-			var tagStart = source.indexOf('<',start);
-			if(tagStart<0){
-				if(!source.substr(start).match(/^\s*$/)){
-					var doc = domBuilder.doc;
-	    			var text = doc.createTextNode(source.substr(start));
-	    			doc.appendChild(text);
-	    			domBuilder.currentElement = text;
-				}
-				return;
-			}
-			if(tagStart>start){
-				appendText(tagStart);
-			}
-			switch(source.charAt(tagStart+1)){
-			case '/':
-				var end = source.indexOf('>',tagStart+3);
-				var tagName = source.substring(tagStart + 2, end).replace(/[ \t\n\r]+$/g, '');
-				var config = parseStack.pop();
-				if(end<0){
-
-	        		tagName = source.substring(tagStart+2).replace(/[\s<].*/,'');
-	        		errorHandler.error("end tag name: "+tagName+' is not complete:'+config.tagName);
-	        		end = tagStart+1+tagName.length;
-	        	}else if(tagName.match(/\s</)){
-	        		tagName = tagName.replace(/[\s<].*/,'');
-	        		errorHandler.error("end tag name: "+tagName+' maybe not complete');
-	        		end = tagStart+1+tagName.length;
-				}
-				var localNSMap = config.localNSMap;
-				var endMatch = config.tagName == tagName;
-				var endIgnoreCaseMach = endMatch || config.tagName&&config.tagName.toLowerCase() == tagName.toLowerCase()
-		        if(endIgnoreCaseMach){
-		        	domBuilder.endElement(config.uri,config.localName,tagName);
-					if(localNSMap){
-						for (var prefix in localNSMap) {
-							if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {
-								domBuilder.endPrefixMapping(prefix);
-							}
-						}
-					}
-					if(!endMatch){
-		            	errorHandler.fatalError("end tag name: "+tagName+' is not match the current start tagName:'+config.tagName ); // No known test case
-					}
-		        }else{
-		        	parseStack.push(config)
-		        }
-
-				end++;
-				break;
-				// end elment
-			case '?':// <?...?>
-				locator&&position(tagStart);
-				end = parseInstruction(source,tagStart,domBuilder);
-				break;
-			case '!':// <!doctype,<![CDATA,<!--
-				locator&&position(tagStart);
-				end = parseDCC(source,tagStart,domBuilder,errorHandler);
-				break;
-			default:
-				locator&&position(tagStart);
-				var el = new ElementAttributes();
-				var currentNSMap = parseStack[parseStack.length-1].currentNSMap;
-				//elStartEnd
-				var end = parseElementStartPart(source,tagStart,el,currentNSMap,entityReplacer,errorHandler);
-				var len = el.length;
-
-
-				if(!el.closed && fixSelfClosed(source,end,el.tagName,closeMap)){
-					el.closed = true;
-					if(!entityMap.nbsp){
-						errorHandler.warning('unclosed xml attribute');
-					}
-				}
-				if(locator && len){
-					var locator2 = copyLocator(locator,{});
-					//try{//attribute position fixed
-					for(var i = 0;i<len;i++){
-						var a = el[i];
-						position(a.offset);
-						a.locator = copyLocator(locator,{});
-					}
-					domBuilder.locator = locator2
-					if(appendElement(el,domBuilder,currentNSMap)){
-						parseStack.push(el)
-					}
-					domBuilder.locator = locator;
-				}else{
-					if(appendElement(el,domBuilder,currentNSMap)){
-						parseStack.push(el)
-					}
-				}
-
-				if (NAMESPACE.isHTML(el.uri) && !el.closed) {
-					end = parseHtmlSpecialContent(source,end,el.tagName,entityReplacer,domBuilder)
-				} else {
-					end++;
-				}
-			}
-		}catch(e){
-			if (e instanceof ParseError) {
-				throw e;
-			}
-			errorHandler.error('element parse error: '+e)
-			end = -1;
-		}
-		if(end>start){
-			start = end;
-		}else{
-			//TODO: 这里有可能sax回退，有位置错误风险
-			appendText(Math.max(tagStart,start)+1);
-		}
-	}
-}
-function copyLocator(f,t){
-	t.lineNumber = f.lineNumber;
-	t.columnNumber = f.columnNumber;
-	return t;
-}
-
-/**
- * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);
- * @return end of the elementStartPart(end of elementEndPart for selfClosed el)
- */
-function parseElementStartPart(source,start,el,currentNSMap,entityReplacer,errorHandler){
-
-	/**
-	 * @param {string} qname
-	 * @param {string} value
-	 * @param {number} startIndex
-	 */
-	function addAttribute(qname, value, startIndex) {
-		if (el.attributeNames.hasOwnProperty(qname)) {
-			errorHandler.fatalError('Attribute ' + qname + ' redefined')
-		}
-		el.addValue(
-			qname,
-			// @see https://www.w3.org/TR/xml/#AVNormalize
-			// since the xmldom sax parser does not "interpret" DTD the following is not implemented:
-			// - recursive replacement of (DTD) entity references
-			// - trimming and collapsing multiple spaces into a single one for attributes that are not of type CDATA
-			value.replace(/[\t\n\r]/g, ' ').replace(/&#?\w+;/g, entityReplacer),
-			startIndex
-		)
-	}
-	var attrName;
-	var value;
-	var p = ++start;
-	var s = S_TAG;//status
-	while(true){
-		var c = source.charAt(p);
-		switch(c){
-		case '=':
-			if(s === S_ATTR){//attrName
-				attrName = source.slice(start,p);
-				s = S_EQ;
-			}else if(s === S_ATTR_SPACE){
-				s = S_EQ;
-			}else{
-				//fatalError: equal must after attrName or space after attrName
-				throw new Error('attribute equal must after attrName'); // No known test case
-			}
-			break;
-		case '\'':
-		case '"':
-			if(s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE
-				){//equal
-				if(s === S_ATTR){
-					errorHandler.warning('attribute value must after "="')
-					attrName = source.slice(start,p)
-				}
-				start = p+1;
-				p = source.indexOf(c,start)
-				if(p>0){
-					value = source.slice(start, p);
-					addAttribute(attrName, value, start-1);
-					s = S_ATTR_END;
-				}else{
-					//fatalError: no end quot match
-					throw new Error('attribute value no end \''+c+'\' match');
-				}
-			}else if(s == S_ATTR_NOQUOT_VALUE){
-				value = source.slice(start, p);
-				addAttribute(attrName, value, start);
-				errorHandler.warning('attribute "'+attrName+'" missed start quot('+c+')!!');
-				start = p+1;
-				s = S_ATTR_END
-			}else{
-				//fatalError: no equal before
-				throw new Error('attribute value must after "="'); // No known test case
-			}
-			break;
-		case '/':
-			switch(s){
-			case S_TAG:
-				el.setTagName(source.slice(start,p));
-			case S_ATTR_END:
-			case S_TAG_SPACE:
-			case S_TAG_CLOSE:
-				s =S_TAG_CLOSE;
-				el.closed = true;
-			case S_ATTR_NOQUOT_VALUE:
-			case S_ATTR:
-			case S_ATTR_SPACE:
-				break;
-			//case S_EQ:
-			default:
-				throw new Error("attribute invalid close char('/')") // No known test case
-			}
-			break;
-		case ''://end document
-			errorHandler.error('unexpected end of input');
-			if(s == S_TAG){
-				el.setTagName(source.slice(start,p));
-			}
-			return p;
-		case '>':
-			switch(s){
-			case S_TAG:
-				el.setTagName(source.slice(start,p));
-			case S_ATTR_END:
-			case S_TAG_SPACE:
-			case S_TAG_CLOSE:
-				break;//normal
-			case S_ATTR_NOQUOT_VALUE://Compatible state
-			case S_ATTR:
-				value = source.slice(start,p);
-				if(value.slice(-1) === '/'){
-					el.closed  = true;
-					value = value.slice(0,-1)
-				}
-			case S_ATTR_SPACE:
-				if(s === S_ATTR_SPACE){
-					value = attrName;
-				}
-				if(s == S_ATTR_NOQUOT_VALUE){
-					errorHandler.warning('attribute "'+value+'" missed quot(")!');
-					addAttribute(attrName, value, start)
-				}else{
-					if(!NAMESPACE.isHTML(currentNSMap['']) || !value.match(/^(?:disabled|checked|selected)$/i)){
-						errorHandler.warning('attribute "'+value+'" missed value!! "'+value+'" instead!!')
-					}
-					addAttribute(value, value, start)
-				}
-				break;
-			case S_EQ:
-				throw new Error('attribute value missed!!');
-			}
-//			console.log(tagName,tagNamePattern,tagNamePattern.test(tagName))
-			return p;
-		/*xml space '\x20' | #x9 | #xD | #xA; */
-		case '\u0080':
-			c = ' ';
-		default:
-			if(c<= ' '){//space
-				switch(s){
-				case S_TAG:
-					el.setTagName(source.slice(start,p));//tagName
-					s = S_TAG_SPACE;
-					break;
-				case S_ATTR:
-					attrName = source.slice(start,p)
-					s = S_ATTR_SPACE;
-					break;
-				case S_ATTR_NOQUOT_VALUE:
-					var value = source.slice(start, p);
-					errorHandler.warning('attribute "'+value+'" missed quot(")!!');
-					addAttribute(attrName, value, start)
-				case S_ATTR_END:
-					s = S_TAG_SPACE;
-					break;
-				//case S_TAG_SPACE:
-				//case S_EQ:
-				//case S_ATTR_SPACE:
-				//	void();break;
-				//case S_TAG_CLOSE:
-					//ignore warning
-				}
-			}else{//not space
-//S_TAG,	S_ATTR,	S_EQ,	S_ATTR_NOQUOT_VALUE
-//S_ATTR_SPACE,	S_ATTR_END,	S_TAG_SPACE, S_TAG_CLOSE
-				switch(s){
-				//case S_TAG:void();break;
-				//case S_ATTR:void();break;
-				//case S_ATTR_NOQUOT_VALUE:void();break;
-				case S_ATTR_SPACE:
-					var tagName =  el.tagName;
-					if (!NAMESPACE.isHTML(currentNSMap['']) || !attrName.match(/^(?:disabled|checked|selected)$/i)) {
-						errorHandler.warning('attribute "'+attrName+'" missed value!! "'+attrName+'" instead2!!')
-					}
-					addAttribute(attrName, attrName, start);
-					start = p;
-					s = S_ATTR;
-					break;
-				case S_ATTR_END:
-					errorHandler.warning('attribute space is required"'+attrName+'"!!')
-				case S_TAG_SPACE:
-					s = S_ATTR;
-					start = p;
-					break;
-				case S_EQ:
-					s = S_ATTR_NOQUOT_VALUE;
-					start = p;
-					break;
-				case S_TAG_CLOSE:
-					throw new Error("elements closed character '/' and '>' must be connected to");
-				}
-			}
-		}//end outer switch
-		//console.log('p++',p)
-		p++;
-	}
-}
-/**
- * @return true if has new namespace define
- */
-function appendElement(el,domBuilder,currentNSMap){
-	var tagName = el.tagName;
-	var localNSMap = null;
-	//var currentNSMap = parseStack[parseStack.length-1].currentNSMap;
-	var i = el.length;
-	while(i--){
-		var a = el[i];
-		var qName = a.qName;
-		var value = a.value;
-		var nsp = qName.indexOf(':');
-		if(nsp>0){
-			var prefix = a.prefix = qName.slice(0,nsp);
-			var localName = qName.slice(nsp+1);
-			var nsPrefix = prefix === 'xmlns' && localName
-		}else{
-			localName = qName;
-			prefix = null
-			nsPrefix = qName === 'xmlns' && ''
-		}
-		//can not set prefix,because prefix !== ''
-		a.localName = localName ;
-		//prefix == null for no ns prefix attribute
-		if(nsPrefix !== false){//hack!!
-			if(localNSMap == null){
-				localNSMap = {}
-				//console.log(currentNSMap,0)
-				_copy(currentNSMap,currentNSMap={})
-				//console.log(currentNSMap,1)
-			}
-			currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;
-			a.uri = NAMESPACE.XMLNS
-			domBuilder.startPrefixMapping(nsPrefix, value)
-		}
-	}
-	var i = el.length;
-	while(i--){
-		a = el[i];
-		var prefix = a.prefix;
-		if(prefix){//no prefix attribute has no namespace
-			if(prefix === 'xml'){
-				a.uri = NAMESPACE.XML;
-			}if(prefix !== 'xmlns'){
-				a.uri = currentNSMap[prefix || '']
-
-				//{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}
-			}
-		}
-	}
-	var nsp = tagName.indexOf(':');
-	if(nsp>0){
-		prefix = el.prefix = tagName.slice(0,nsp);
-		localName = el.localName = tagName.slice(nsp+1);
-	}else{
-		prefix = null;//important!!
-		localName = el.localName = tagName;
-	}
-	//no prefix element has default namespace
-	var ns = el.uri = currentNSMap[prefix || ''];
-	domBuilder.startElement(ns,localName,tagName,el);
-	//endPrefixMapping and startPrefixMapping have not any help for dom builder
-	//localNSMap = null
-	if(el.closed){
-		domBuilder.endElement(ns,localName,tagName);
-		if(localNSMap){
-			for (prefix in localNSMap) {
-				if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {
-					domBuilder.endPrefixMapping(prefix);
-				}
-			}
-		}
-	}else{
-		el.currentNSMap = currentNSMap;
-		el.localNSMap = localNSMap;
-		//parseStack.push(el);
-		return true;
-	}
-}
-function parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){
-	if(/^(?:script|textarea)$/i.test(tagName)){
-		var elEndStart =  source.indexOf('</'+tagName+'>',elStartEnd);
-		var text = source.substring(elStartEnd+1,elEndStart);
-		if(/[&<]/.test(text)){
-			if(/^script$/i.test(tagName)){
-				//if(!/\]\]>/.test(text)){
-					//lexHandler.startCDATA();
-					domBuilder.characters(text,0,text.length);
-					//lexHandler.endCDATA();
-					return elEndStart;
-				//}
-			}//}else{//text area
-				text = text.replace(/&#?\w+;/g,entityReplacer);
-				domBuilder.characters(text,0,text.length);
-				return elEndStart;
-			//}
-
-		}
-	}
-	return elStartEnd+1;
-}
-function fixSelfClosed(source,elStartEnd,tagName,closeMap){
-	//if(tagName in closeMap){
-	var pos = closeMap[tagName];
-	if(pos == null){
-		//console.log(tagName)
-		pos =  source.lastIndexOf('</'+tagName+'>')
-		if(pos<elStartEnd){//忘记闭合
-			pos = source.lastIndexOf('</'+tagName)
-		}
-		closeMap[tagName] =pos
-	}
-	return pos<elStartEnd;
-	//}
-}
-
-function _copy (source, target) {
-	for (var n in source) {
-		if (Object.prototype.hasOwnProperty.call(source, n)) {
-			target[n] = source[n];
-		}
-	}
-}
-
-function parseDCC(source,start,domBuilder,errorHandler){//sure start with '<!'
-	var next= source.charAt(start+2)
-	switch(next){
-	case '-':
-		if(source.charAt(start + 3) === '-'){
-			var end = source.indexOf('-->',start+4);
-			//append comment source.substring(4,end)//<!--
-			if(end>start){
-				domBuilder.comment(source,start+4,end-start-4);
-				return end+3;
-			}else{
-				errorHandler.error("Unclosed comment");
-				return -1;
-			}
-		}else{
-			//error
-			return -1;
-		}
-	default:
-		if(source.substr(start+3,6) == 'CDATA['){
-			var end = source.indexOf(']]>',start+9);
-			domBuilder.startCDATA();
-			domBuilder.characters(source,start+9,end-start-9);
-			domBuilder.endCDATA()
-			return end+3;
-		}
-		//<!DOCTYPE
-		//startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId)
-		var matchs = split(source,start);
-		var len = matchs.length;
-		if(len>1 && /!doctype/i.test(matchs[0][0])){
-			var name = matchs[1][0];
-			var pubid = false;
-			var sysid = false;
-			if(len>3){
-				if(/^public$/i.test(matchs[2][0])){
-					pubid = matchs[3][0];
-					sysid = len>4 && matchs[4][0];
-				}else if(/^system$/i.test(matchs[2][0])){
-					sysid = matchs[3][0];
-				}
-			}
-			var lastMatch = matchs[len-1]
-			domBuilder.startDTD(name, pubid, sysid);
-			domBuilder.endDTD();
-
-			return lastMatch.index+lastMatch[0].length
-		}
-	}
-	return -1;
-}
-
-
-
-function parseInstruction(source,start,domBuilder){
-	var end = source.indexOf('?>',start);
-	if(end){
-		var match = source.substring(start,end).match(/^<\?(\S*)\s*([\s\S]*?)\s*$/);
-		if(match){
-			var len = match[0].length;
-			domBuilder.processingInstruction(match[1], match[2]) ;
-			return end+2;
-		}else{//error
-			return -1;
-		}
-	}
-	return -1;
-}
-
-function ElementAttributes(){
-	this.attributeNames = {}
-}
-ElementAttributes.prototype = {
-	setTagName:function(tagName){
-		if(!tagNamePattern.test(tagName)){
-			throw new Error('invalid tagName:'+tagName)
-		}
-		this.tagName = tagName
-	},
-	addValue:function(qName, value, offset) {
-		if(!tagNamePattern.test(qName)){
-			throw new Error('invalid attribute:'+qName)
-		}
-		this.attributeNames[qName] = this.length;
-		this[this.length++] = {qName:qName,value:value,offset:offset}
-	},
-	length:0,
-	getLocalName:function(i){return this[i].localName},
-	getLocator:function(i){return this[i].locator},
-	getQName:function(i){return this[i].qName},
-	getURI:function(i){return this[i].uri},
-	getValue:function(i){return this[i].value}
-//	,getIndex:function(uri, localName)){
-//		if(localName){
-//
-//		}else{
-//			var qName = uri
-//		}
-//	},
-//	getValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},
-//	getType:function(uri,localName){}
-//	getType:function(i){},
-}
-
-
-
-function split(source,start){
-	var match;
-	var buf = [];
-	var reg = /'[^']+'|"[^"]+"|[^\s<>\/=]+=?|(\/?\s*>|<)/g;
-	reg.lastIndex = start;
-	reg.exec(source);//skip <
-	while(match = reg.exec(source)){
-		buf.push(match);
-		if(match[1])return buf;
-	}
-}
-
-/**
- * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends:
- *
- * > XML parsed entities are often stored in computer files which,
- * > for editing convenience, are organized into lines.
- * > These lines are typically separated by some combination
- * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA).
- * >
- * > To simplify the tasks of applications, the XML processor must behave
- * > as if it normalized all line breaks in external parsed entities (including the document entity)
- * > on input, before parsing, by translating all of the following to a single #xA character:
- * >
- * > 1. the two-character sequence #xD #xA
- * > 2. the two-character sequence #xD #x85
- * > 3. the single character #x85
- * > 4. the single character #x2028
- * > 5. any #xD character that is not immediately followed by #xA or #x85.
- *
- * @param {string} input
- * @returns {string}
- */
-function normalizeLineEndings(input) {
-	return input
-		.replace(/\r[\n\u0085]/g, '\n')
-		.replace(/[\r\u0085\u2028]/g, '\n')
-}
-
-/**
- * @typedef Locator
- * @property {number} [columnNumber]
- * @property {number} [lineNumber]
- */
-
-/**
- * @typedef DOMParserOptions
- * @property {DOMHandler} [domBuilder]
- * @property {Function} [errorHandler]
- * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing
- * 						defaults to `normalizeLineEndings`
- * @property {Locator} [locator]
- * @property {Record<string, string>} [xmlns]
- *
- * @see normalizeLineEndings
- */
-
-/**
- * The DOMParser interface provides the ability to parse XML or HTML source code
- * from a string into a DOM `Document`.
- *
- * _xmldom is different from the spec in that it allows an `options` parameter,
- * to override the default behavior._
- *
- * @param {DOMParserOptions} [options]
- * @constructor
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser
- * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization
- */
-function DOMParser(options){
-	this.options = options ||{locator:{}};
-}
-
-DOMParser.prototype.parseFromString = function(source,mimeType){
-	var options = this.options;
-	var sax =  new XMLReader();
-	var domBuilder = options.domBuilder || new DOMHandler();//contentHandler and LexicalHandler
-	var errorHandler = options.errorHandler;
-	var locator = options.locator;
-	var defaultNSMap = options.xmlns||{};
-	var isHTML = /\/x?html?$/.test(mimeType);//mimeType.toLowerCase().indexOf('html') > -1;
-  	var entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES;
-	if(locator){
-		domBuilder.setDocumentLocator(locator)
-	}
-
-	sax.errorHandler = buildErrorHandler(errorHandler,domBuilder,locator);
-	sax.domBuilder = options.domBuilder || domBuilder;
-	if(isHTML){
-		defaultNSMap[''] = NAMESPACE.HTML;
-	}
-	defaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;
-	var normalize = options.normalizeLineEndings || normalizeLineEndings;
-	if (source && typeof source === 'string') {
-		sax.parse(
-			normalize(source),
-			defaultNSMap,
-			entityMap
-		)
-	} else {
-		sax.errorHandler.error('invalid doc source')
-	}
-	return domBuilder.doc;
-}
-function buildErrorHandler(errorImpl,domBuilder,locator){
-	if(!errorImpl){
-		if(domBuilder instanceof DOMHandler){
-			return domBuilder;
-		}
-		errorImpl = domBuilder ;
-	}
-	var errorHandler = {}
-	var isCallback = errorImpl instanceof Function;
-	locator = locator||{}
-	function build(key){
-		var fn = errorImpl[key];
-		if(!fn && isCallback){
-			fn = errorImpl.length == 2?function(msg){errorImpl(key,msg)}:errorImpl;
-		}
-		errorHandler[key] = fn && function(msg){
-			fn('[xmldom '+key+']\t'+msg+_locator(locator));
-		}||function(){};
-	}
-	build('warning');
-	build('error');
-	build('fatalError');
-	return errorHandler;
-}
-
-//console.log('#\n\n\n\n\n\n\n####')
-/**
- * +ContentHandler+ErrorHandler
- * +LexicalHandler+EntityResolver2
- * -DeclHandler-DTDHandler
- *
- * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler
- * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2
- * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html
- */
-function DOMHandler() {
-    this.cdata = false;
-}
-function position(locator,node){
-	node.lineNumber = locator.lineNumber;
-	node.columnNumber = locator.columnNumber;
-}
-/**
- * @see org.xml.sax.ContentHandler#startDocument
- * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html
- */
-DOMHandler.prototype = {
-	startDocument : function() {
-    	this.doc = new DOMImplementation().createDocument(null, null, null);
-    	if (this.locator) {
-        	this.doc.documentURI = this.locator.systemId;
-    	}
-	},
-	startElement:function(namespaceURI, localName, qName, attrs) {
-		var doc = this.doc;
-	    var el = doc.createElementNS(namespaceURI, qName||localName);
-	    var len = attrs.length;
-	    appendElement(this, el);
-	    this.currentElement = el;
-
-		this.locator && position(this.locator,el)
-	    for (var i = 0 ; i < len; i++) {
-	        var namespaceURI = attrs.getURI(i);
-	        var value = attrs.getValue(i);
-	        var qName = attrs.getQName(i);
-			var attr = doc.createAttributeNS(namespaceURI, qName);
-			this.locator &&position(attrs.getLocator(i),attr);
-			attr.value = attr.nodeValue = value;
-			el.setAttributeNode(attr)
-	    }
-	},
-	endElement:function(namespaceURI, localName, qName) {
-		var current = this.currentElement
-		var tagName = current.tagName;
-		this.currentElement = current.parentNode;
-	},
-	startPrefixMapping:function(prefix, uri) {
-	},
-	endPrefixMapping:function(prefix) {
-	},
-	processingInstruction:function(target, data) {
-	    var ins = this.doc.createProcessingInstruction(target, data);
-	    this.locator && position(this.locator,ins)
-	    appendElement(this, ins);
-	},
-	ignorableWhitespace:function(ch, start, length) {
-	},
-	characters:function(chars, start, length) {
-		chars = _toString.apply(this,arguments)
-		//console.log(chars)
-		if(chars){
-			if (this.cdata) {
-				var charNode = this.doc.createCDATASection(chars);
-			} else {
-				var charNode = this.doc.createTextNode(chars);
-			}
-			if(this.currentElement){
-				this.currentElement.appendChild(charNode);
-			}else if(/^\s*$/.test(chars)){
-				this.doc.appendChild(charNode);
-				//process xml
-			}
-			this.locator && position(this.locator,charNode)
-		}
-	},
-	skippedEntity:function(name) {
-	},
-	endDocument:function() {
-		this.doc.normalize();
-	},
-	setDocumentLocator:function (locator) {
-	    if(this.locator = locator){// && !('lineNumber' in locator)){
-	    	locator.lineNumber = 0;
-	    }
-	},
-	//LexicalHandler
-	comment:function(chars, start, length) {
-		chars = _toString.apply(this,arguments)
-	    var comm = this.doc.createComment(chars);
-	    this.locator && position(this.locator,comm)
-	    appendElement(this, comm);
-	},
-
-	startCDATA:function() {
-	    //used in characters() methods
-	    this.cdata = true;
-	},
-	endCDATA:function() {
-	    this.cdata = false;
-	},
-
-	startDTD:function(name, publicId, systemId) {
-		var impl = this.doc.implementation;
-	    if (impl && impl.createDocumentType) {
-	        var dt = impl.createDocumentType(name, publicId, systemId);
-	        this.locator && position(this.locator,dt)
-	        appendElement(this, dt);
-					this.doc.doctype = dt;
-	    }
-	},
-	/**
-	 * @see org.xml.sax.ErrorHandler
-	 * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html
-	 */
-	warning:function(error) {
-		console.warn('[xmldom warning]\t'+error,_locator(this.locator));
-	},
-	error:function(error) {
-		console.error('[xmldom error]\t'+error,_locator(this.locator));
-	},
-	fatalError:function(error) {
-		throw new ParseError(error, this.locator);
-	}
-}
-function _locator(l){
-	if(l){
-		return '\n@'+(l.systemId ||'')+'#[line:'+l.lineNumber+',col:'+l.columnNumber+']'
-	}
-}
-function _toString(chars,start,length){
-	if(typeof chars == 'string'){
-		return chars.substr(start,length)
-	}else{//java sax connect width xmldom on rhino(what about: "? && !(chars instanceof String)")
-		if(chars.length >= start+length || start){
-			return new java.lang.String(chars,start,length)+'';
-		}
-		return chars;
-	}
-}
-
-/*
- * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html
- * used method of org.xml.sax.ext.LexicalHandler:
- *  #comment(chars, start, length)
- *  #startCDATA()
- *  #endCDATA()
- *  #startDTD(name, publicId, systemId)
- *
- *
- * IGNORED method of org.xml.sax.ext.LexicalHandler:
- *  #endDTD()
- *  #startEntity(name)
- *  #endEntity(name)
- *
- *
- * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html
- * IGNORED method of org.xml.sax.ext.DeclHandler
- * 	#attributeDecl(eName, aName, type, mode, value)
- *  #elementDecl(name, model)
- *  #externalEntityDecl(name, publicId, systemId)
- *  #internalEntityDecl(name, value)
- * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html
- * IGNORED method of org.xml.sax.EntityResolver2
- *  #resolveEntity(String name,String publicId,String baseURI,String systemId)
- *  #resolveEntity(publicId, systemId)
- *  #getExternalSubset(name, baseURI)
- * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html
- * IGNORED method of org.xml.sax.DTDHandler
- *  #notationDecl(name, publicId, systemId) {};
- *  #unparsedEntityDecl(name, publicId, systemId, notationName) {};
- */
-"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g,function(key){
-	DOMHandler.prototype[key] = function(){return null}
-})
-
-/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */
-function appendElement (hander,node) {
-    if (!hander.currentElement) {
-        hander.doc.appendChild(node);
-    } else {
-        hander.currentElement.appendChild(node);
-    }
-}//appendChild and setAttributeNS are preformance key
+function find(e,t,n){if(void 0===n&&(n=Array.prototype),e&&"function"==typeof n.find)return n.find.call(e,t);for(var r=0;r<e.length;r++)if(Object.prototype.hasOwnProperty.call(e,r)){var o=e[r];if(t.call(void 0,o,r,e))return o}}function freeze(e,t){return void 0===t&&(t=Object),t&&"function"==typeof t.freeze?t.freeze(e):e}function assign(e,t){if(null===e||"object"!=typeof e)throw new TypeError("target is not an object");for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n]);return e}var MIME_TYPE=freeze({HTML:"text/html",isHTML:function(e){return e===MIME_TYPE.HTML},XML_APPLICATION:"application/xml",XML_TEXT:"text/xml",XML_XHTML_APPLICATION:"application/xhtml+xml",XML_SVG_IMAGE:"image/svg+xml"}),NAMESPACE=freeze({HTML:"http://www.w3.org/1999/xhtml",isHTML:function(e){return e===NAMESPACE.HTML},SVG:"http://www.w3.org/2000/svg",XML:"http://www.w3.org/XML/1998/namespace",XMLNS:"http://www.w3.org/2000/xmlns/"});function notEmptyString(e){return""!==e}function splitOnASCIIWhitespace(e){return e?e.split(/[\t\n\f\r ]+/).filter(notEmptyString):[]}function orderedSetReducer(e,t){return e.hasOwnProperty(t)||(e[t]=!0),e}function toOrderedSet(e){if(!e)return[];e=splitOnASCIIWhitespace(e);return Object.keys(e.reduce(orderedSetReducer,{}))}function arrayIncludes(t){return function(e){return t&&-1!==t.indexOf(e)}}function copy(e,t){for(var n in e)Object.prototype.hasOwnProperty.call(e,n)&&(t[n]=e[n])}function _extends(e,t){var n=e.prototype;function r(){}n instanceof t||(r.prototype=t.prototype,copy(n,r=new r),e.prototype=n=r),n.constructor!=e&&("function"!=typeof e&&console.error("unknown Class:"+e),n.constructor=e)}var 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t.ownerDocument=this,t.appendData(e),t},createCDATASection:function(e){var t=new CDATASection;return t.ownerDocument=this,t.appendData(e),t},createProcessingInstruction:function(e,t){var n=new ProcessingInstruction;return n.ownerDocument=this,n.tagName=n.target=e,n.nodeValue=n.data=t,n},createAttribute:function(e){var t=new Attr;return t.ownerDocument=this,t.name=e,t.nodeName=e,t.localName=e,t.specified=!0,t},createEntityReference:function(e){var t=new EntityReference;return t.ownerDocument=this,t.nodeName=e,t},createElementNS:function(e,t){var n=new Element,r=t.split(":"),o=n.attributes=new NamedNodeMap;return n.childNodes=new NodeList,n.ownerDocument=this,n.nodeName=t,n.tagName=t,n.namespaceURI=e,2==r.length?(n.prefix=r[0],n.localName=r[1]):n.localName=t,o._ownerElement=n},createAttributeNS:function(e,t){var n=new Attr,r=t.split(":");return 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 __DOMHandler = DOMHandler;