+var TEXT_NODE = Node.TEXT_NODE;
+
+
+var DocumentNode = function(nativeNode, document) {
+ if(!document) {
+ throw new Error('undefined document for a node');
+ }
+ this.document = document;
+ this.nativeNode = nativeNode;
+ this._$ = $(nativeNode);
+};
+
+$.extend(DocumentNode.prototype, {
+ detach: function() { this._$.detach(); },
+
+ sameNode: function(otherNode) {
+ return this.nativeNode === otherNode.nativeNode;
+ },
+
+ parent: function() {
+ return this.nativeNode.parentNode ? this.document.createElementNode(this.nativeNode.parentNode) : null;
+ },
+
+ before: function(node) {
+ this._$.before(node.nativeNode);
+ },
+
+ wrapWith: function(node) {
+ if(this.parent()) {
+ this.before(node);
+ }
+ node.append(this);
+ },
+});
+
+var ElementNode = function(nativeNode, document) {
+ DocumentNode.call(this, nativeNode, document);
+};
+
+$.extend(ElementNode.prototype, DocumentNode.prototype, {
+ nodeType: Node.ELEMENT_NODE,
+
+ getTagName: function() {
+ return this.nativeNode.tagName.toLowerCase();
+ },
+
+ contents: function() {
+ var toret = [],
+ document = this.document;
+ this._$.contents().each(function() {
+ if(this.nodeType === Node.ELEMENT_NODE) {
+ toret.push(document.createElementNode(this));
+ }
+ else if(this.nodeType === Node.TEXT_NODE) {
+ toret.push(document.createTextNode(this));
+ }
+ });
+ return toret;
+ },
+
+ indexOf: function(node) {
+ return this._$.contents().index(node._$);
+ },
+
+ getAttr: function(name) {
+ return this._$.attr(name);
+ },
+
+ setAttr: function(name, value) {
+ this._$.attr(name, value);
+ },
+
+ getAttrs: function() {
+ var toret = [];
+ for(var i = 0; i < this.nativeNode.attributes.length; i++) {
+ toret.push(this.nativeNode.attributes[i]);
+ }
+ return toret;
+ },
+
+ append: function(documentNode) {
+ this._$.append(documentNode.nativeNode);
+ },
+
+ unwrapContent: function() {
+ var parent = this.parent();
+ if(!parent) {
+ return;
+ }
+
+ var parentContents = parent.contents(),
+ myContents = this.contents(),
+ myIdx = parent.indexOf(this);
+
+ if(myContents.length === 0) {
+ return this.detach();
+ }