    /**
     * @class Ext.core.Element
     */
    Ext.core.Element.addMethods({
        /**
         * Looks at this node and then at parent nodes for a match of the passed simple selector (e.g. div.some-class or span:first-child)
         * @param {String} selector The simple selector to test
         * @param {Number/Mixed} maxDepth (optional) The max depth to search as a number or element (defaults to 50 || document.body)
         * @param {Boolean} returnEl (optional) True to return a Ext.core.Element object instead of DOM node
         * @return {HTMLElement} The matching DOM node (or null if no match was found)
         */
        findParent : function(simpleSelector, maxDepth, returnEl) {
            var p = this.dom,
                b = document.body,
                depth = 0,
                stopEl;

            maxDepth = maxDepth || 50;
            if (isNaN(maxDepth)) {
                stopEl = Ext.getDom(maxDepth);
                maxDepth = Number.MAX_VALUE;
            }
            while (p && p.nodeType == 1 && depth < maxDepth && p != b && p != stopEl) {
                if (Ext.DomQuery.is(p, simpleSelector)) {
                    return returnEl ? Ext.get(p) : p;
                }
                depth++;
                p = p.parentNode;
            }
            return null;
        },

        /**
         * Looks at parent nodes for a match of the passed simple selector (e.g. div.some-class or span:first-child)
         * @param {String} selector The simple selector to test
         * @param {Number/Mixed} maxDepth (optional) The max depth to
                search as a number or element (defaults to 10 || document.body)
         * @param {Boolean} returnEl (optional) True to return a Ext.core.Element object instead of DOM node
         * @return {HTMLElement} The matching DOM node (or null if no match was found)
         */
        findParentNode : function(simpleSelector, maxDepth, returnEl) {
            var p = Ext.fly(this.dom.parentNode, '_internal');
            return p ? p.findParent(simpleSelector, maxDepth, returnEl) : null;
        },

        /**
         * Walks up the dom looking for a parent node that matches the passed simple selector (e.g. div.some-class or span:first-child).
         * This is a shortcut for findParentNode() that always returns an Ext.core.Element.
         * @param {String} selector The simple selector to test
         * @param {Number/Mixed} maxDepth (optional) The max depth to
                search as a number or element (defaults to 10 || document.body)
         * @return {Ext.core.Element} The matching DOM node (or null if no match was found)
         */
        up : function(simpleSelector, maxDepth) {
            return this.findParentNode(simpleSelector, maxDepth, true);
        },

        /**
         * Creates a {@link Ext.CompositeElement} for child nodes based on the passed CSS selector (the selector should not contain an id).
         * @param {String} selector The CSS selector
         * @return {CompositeElement/CompositeElement} The composite element
         */
        select : function(selector) {
            return Ext.core.Element.select(selector, false,  this.dom);
        },

        /**
         * Selects child nodes based on the passed CSS selector (the selector should not contain an id).
         * @param {String} selector The CSS selector
         * @return {Array} An array of the matched nodes
         */
        query : function(selector) {
            return Ext.DomQuery.select(selector, this.dom);
        },

        /**
         * Selects a single child at any depth below this element based on the passed CSS selector (the selector should not contain an id).
         * @param {String} selector The CSS selector
         * @param {Boolean} returnDom (optional) True to return the DOM node instead of Ext.core.Element (defaults to false)
         * @return {HTMLElement/Ext.core.Element} The child Ext.core.Element (or DOM node if returnDom = true)
         */
        down : function(selector, returnDom) {
            var n = Ext.DomQuery.selectNode(selector, this.dom);
            return returnDom ? n : Ext.get(n);
        },

        /**
         * Selects a single *direct* child based on the passed CSS selector (the selector should not contain an id).
         * @param {String} selector The CSS selector
         * @param {Boolean} returnDom (optional) True to return the DOM node instead of Ext.core.Element (defaults to false)
         * @return {HTMLElement/Ext.core.Element} The child Ext.core.Element (or DOM node if returnDom = true)
         */
        child : function(selector, returnDom) {
            var node,
                me = this,
                id;
            id = Ext.get(me).id;
            // Escape . or :
            id = id.replace(/[\.:]/g, "\\$0");
            node = Ext.DomQuery.selectNode('#' + id + " > " + selector, me.dom);
            return returnDom ? node : Ext.get(node);
        },

         /**
         * Gets the parent node for this element, optionally chaining up trying to match a selector
         * @param {String} selector (optional) Find a parent node that matches the passed simple selector
         * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.core.Element
         * @return {Ext.core.Element/HTMLElement} The parent node or null
         */
        parent : function(selector, returnDom) {
            return this.matchNode('parentNode', 'parentNode', selector, returnDom);
        },

         /**
         * Gets the next sibling, skipping text nodes
         * @param {String} selector (optional) Find the next sibling that matches the passed simple selector
         * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.core.Element
         * @return {Ext.core.Element/HTMLElement} The next sibling or null
         */
        next : function(selector, returnDom) {
            return this.matchNode('nextSibling', 'nextSibling', selector, returnDom);
        },

        /**
         * Gets the previous sibling, skipping text nodes
         * @param {String} selector (optional) Find the previous sibling that matches the passed simple selector
         * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.core.Element
         * @return {Ext.core.Element/HTMLElement} The previous sibling or null
         */
        prev : function(selector, returnDom) {
            return this.matchNode('previousSibling', 'previousSibling', selector, returnDom);
        },

        /**
         * Gets the first child, skipping text nodes
         * @param {String} selector (optional) Find the next sibling that matches the passed simple selector
         * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.core.Element
         * @return {Ext.core.Element/HTMLElement} The first child or null
         */
        first : function(selector, returnDom) {
            return this.matchNode('nextSibling', 'firstChild', selector, returnDom);
        },

        /**
         * Gets the last child, skipping text nodes
         * @param {String} selector (optional) Find the previous sibling that matches the passed simple selector
         * @param {Boolean} returnDom (optional) True to return a raw dom node instead of an Ext.core.Element
         * @return {Ext.core.Element/HTMLElement} The last child or null
         */
        last : function(selector, returnDom) {
            return this.matchNode('previousSibling', 'lastChild', selector, returnDom);
        },

        matchNode : function(dir, start, selector, returnDom) {
            if (!this.dom) {
                return null;
            }

            var n = this.dom[start];
            while (n) {
                if (n.nodeType == 1 && (!selector || Ext.DomQuery.is(n, selector))) {
                    return !returnDom ? Ext.get(n) : n;
                }
                n = n[dir];
            }
            return null;
        }
    });