    //@tag dom,core
    /* ================================
     * A Note About Wrapped Animations
     * ================================
     * A few of the effects below implement two different animations per effect, one wrapping
     * animation that performs the visual effect and a "no-op" animation on this Element where
     * no attributes of the element itself actually change. The purpose for this is that the
     * wrapper is required for the effect to work and so it does the actual animation work, but
     * we always animate `this` so that the element's events and callbacks work as expected to
     * the callers of this API.
     *
     * Because of this, we always want each wrap animation to complete first (we don't want to
     * cut off the visual effect early). To ensure that, we arbitrarily increase the duration of
     * the element's no-op animation, also ensuring that it has a decent minimum value -- on slow
     * systems, too-low durations can cause race conditions between the wrap animation and the
     * element animation being removed out of order. Note that in each wrap's `afteranimate`
     * callback it will explicitly terminate the element animation as soon as the wrap is complete,
     * so there's no real danger in making the duration too long.
     *
     * This applies to all effects that get wrapped, including slideIn, slideOut, switchOff and frame.
     */

    /**
     */
    Ext.define('Ext.dom.Element_anim', {
        override: 'Ext.dom.Element',

        /**
         * Performs custom animation on this Element.
         *
         * The following properties may be specified in `from`, `to`, and `keyframe` objects:
         *
         *   - `x` - The page X position in pixels.
         *
         *   - `y` - The page Y position in pixels
         *
         *   - `left` - The element's CSS `left` value. Units must be supplied.
         *
         *   - `top` - The element's CSS `top` value. Units must be supplied.
         *
         *   - `width` - The element's CSS `width` value. Units must be supplied.
         *
         *   - `height` - The element's CSS `height` value. Units must be supplied.
         *
         *   - `scrollLeft` - The element's `scrollLeft` value.
         *
         *   - `scrollTop` - The element's `scrollTop` value.
         *
         *   - `opacity` - The element's `opacity` value. This must be a value between `0` and `1`.
         *
         * **Be aware** that animating an Element which is being used by an Ext Component without in some way informing the
         * Component about the changed element state will result in incorrect Component behaviour. This is because the
         * Component will be using the old state of the element. To avoid this problem, it is now possible to directly
         * animate certain properties of Components.
         *
         * @param {Object} config  Configuration for {@link Ext.fx.Anim}.
         * Note that the {@link Ext.fx.Anim#to to} config is required.
         * @return {Ext.dom.Element} this
         */
        animate: function(config) {
            var me = this,
                listeners,
                anim,
                animId = me.dom.id || Ext.id(me.dom);

            if (!Ext.fx.Manager.hasFxBlock(animId)) {
                // Bit of gymnastics here to ensure our internal listeners get bound first
                if (config.listeners) {
                    listeners = config.listeners;
                    delete config.listeners;
                }
                if (config.internalListeners) {
                    config.listeners = config.internalListeners;
                    delete config.internalListeners;
                }
                anim = new Ext.fx.Anim(me.anim(config));
                if (listeners) {
                    anim.on(listeners);
                }
                Ext.fx.Manager.queueFx(anim);
            }
            return me;
        },

        // @private - process the passed fx configuration.
        anim: function(config) {
            if (!Ext.isObject(config)) {
                return (config) ? {} : false;
            }

            var me = this,
                duration = config.duration || Ext.fx.Anim.prototype.duration,
                easing = config.easing || 'ease',
                animConfig;

            if (config.stopAnimation) {
                me.stopAnimation();
            }

            Ext.applyIf(config, Ext.fx.Manager.getFxDefaults(me.id));

            // Clear any 'paused' defaults.
            Ext.fx.Manager.setFxDefaults(me.id, {
                delay: 0
            });

            animConfig = {
                // Pass the DOM reference. That's tested first so will be converted to an Ext.fx.Target fastest.
                target: me.dom,
                remove: config.remove,
                alternate: config.alternate || false,
                duration: duration,
                easing: easing,
                callback: config.callback,
                listeners: config.listeners,
                iterations: config.iterations || 1,
                scope: config.scope,
                block: config.block,
                concurrent: config.concurrent,
                delay: config.delay || 0,
                paused: true,
                keyframes: config.keyframes,
                from: config.from || {},
                to: Ext.apply({}, config)
            };
            Ext.apply(animConfig.to, config.to);

            // Anim API properties - backward compat
            delete animConfig.to.to;
            delete animConfig.to.from;
            delete animConfig.to.remove;
            delete animConfig.to.alternate;
            delete animConfig.to.keyframes;
            delete animConfig.to.iterations;
            delete animConfig.to.listeners;
            delete animConfig.to.target;
            delete animConfig.to.paused;
            delete animConfig.to.callback;
            delete animConfig.to.scope;
            delete animConfig.to.duration;
            delete animConfig.to.easing;
            delete animConfig.to.concurrent;
            delete animConfig.to.block;
            delete animConfig.to.stopAnimation;
            delete animConfig.to.delay;
            return animConfig;
        },

        /**
         * Slides the element into view. An anchor point can be optionally passed to set the point of origin for the slide
         * effect. This function automatically handles wrapping the element with a fixed-size container if needed. See the
         * Fx class overview for valid anchor point options. Usage:
         *
         *     // default: slide the element in from the top
         *     el.slideIn();
         *
         *     // custom: slide the element in from the right with a 2-second duration
         *     el.slideIn('r', { duration: 2000 });
         *
         *     // common config options shown with default values
         *     el.slideIn('t', {
         *         easing: 'easeOut',
         *         duration: 500
         *     });
         *
         * @param {String} anchor (optional) One of the valid Fx anchor positions (defaults to top: 't')
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @param {Boolean} options.preserveScroll Set to true if preservation of any descendant elements'
         * `scrollTop` values is required. By default the DOM wrapping operation performed by `slideIn` and
         * `slideOut` causes the browser to lose all scroll positions.
         * @return {Ext.dom.Element} The Element
         */
        slideIn: function(anchor, obj, slideOut) {
            var me = this,
                dom = me.dom,
                elStyle = dom.style,
                beforeAnim,
                wrapAnim,
                restoreScroll,
                wrapDomParentNode;

            anchor = anchor || "t";
            obj = obj || {};

            beforeAnim = function() {
                var animScope = this,
                    listeners = obj.listeners,
                    el = Ext.fly(dom, '_anim'),
                    box, originalStyles, anim, wrap;

                if (!slideOut) {
                    el.fixDisplay();
                }

                box = el.getBox();
                if ((anchor == 't' || anchor == 'b') && box.height === 0) {
                    box.height = dom.scrollHeight;
                }
                else if ((anchor == 'l' || anchor == 'r') && box.width === 0) {
                    box.width = dom.scrollWidth;
                }

                originalStyles = el.getStyles('width', 'height', 'left', 'right', 'top', 'bottom', 'position', 'z-index', true);
                el.setSize(box.width, box.height);

                // Cache all descendants' scrollTop & scrollLeft values if configured to preserve scroll.
                if (obj.preserveScroll) {
                    restoreScroll = el.cacheScrollValues();
                }

                wrap = el.wrap({
                    id: Ext.id() + '-anim-wrap-for-' + el.dom.id,
                    style: {
                        visibility: slideOut ? 'visible' : 'hidden'
                    }
                });
                wrapDomParentNode = wrap.dom.parentNode;
                wrap.setPositioning(el.getPositioning(true));
                if (wrap.isStyle('position', 'static')) {
                    wrap.position('relative');
                }
                el.clearPositioning('auto');
                wrap.clip();

                // The wrap will have reset all descendant scrollTops. Restore them if we cached them.
                if (restoreScroll) {
                    restoreScroll();
                }

                // This element is temporarily positioned absolute within its wrapper.
                // Restore to its default, CSS-inherited visibility setting.
                // We cannot explicitly poke visibility:visible into its style because that overrides the visibility of the wrap.
                el.setStyle({
                    visibility: '',
                    position: 'absolute'
                });
                if (slideOut) {
                    wrap.setSize(box.width, box.height);
                }

                switch (anchor) {
                    case 't':
                        anim = {
                            from: {
                                width: box.width + 'px',
                                height: '0px'
                            },
                            to: {
                                width: box.width + 'px',
                                height: box.height + 'px'
                            }
                        };
                        elStyle.bottom = '0px';
                        break;
                    case 'l':
                        anim = {
                            from: {
                                width: '0px',
                                height: box.height + 'px'
                            },
                            to: {
                                width: box.width + 'px',
                                height: box.height + 'px'
                            }
                        };
                        me.anchorAnimX(anchor);
                        break;
                    case 'r':
                        anim = {
                            from: {
                                x: box.x + box.width,
                                width: '0px',
                                height: box.height + 'px'
                            },
                            to: {
                                x: box.x,
                                width: box.width + 'px',
                                height: box.height + 'px'
                            }
                        };
                        me.anchorAnimX(anchor);
                        break;
                    case 'b':
                        anim = {
                            from: {
                                y: box.y + box.height,
                                width: box.width + 'px',
                                height: '0px'
                            },
                            to: {
                                y: box.y,
                                width: box.width + 'px',
                                height: box.height + 'px'
                            }
                        };
                        break;
                    case 'tl':
                        anim = {
                            from: {
                                x: box.x,
                                y: box.y,
                                width: '0px',
                                height: '0px'
                            },
                            to: {
                                width: box.width + 'px',
                                height: box.height + 'px'
                            }
                        };
                        elStyle.bottom = '0px';
                        me.anchorAnimX('l');
                        break;
                    case 'bl':
                        anim = {
                            from: {
                                y: box.y + box.height,
                                width: '0px',
                                height: '0px'
                            },
                            to: {
                                y: box.y,
                                width: box.width + 'px',
                                height: box.height + 'px'
                            }
                        };
                        me.anchorAnimX('l');
                        break;
                    case 'br':
                        anim = {
                            from: {
                                x: box.x + box.width,
                                y: box.y + box.height,
                                width: '0px',
                                height: '0px'
                            },
                            to: {
                                x: box.x,
                                y: box.y,
                                width: box.width + 'px',
                                height: box.height + 'px'
                            }
                        };
                        me.anchorAnimX('r');
                        break;
                    case 'tr':
                        anim = {
                            from: {
                                x: box.x + box.width,
                                width: '0px',
                                height: '0px'
                            },
                            to: {
                                x: box.x,
                                width: box.width + 'px',
                                height: box.height + 'px'
                            }
                        };
                        elStyle.bottom = '0px';
                        me.anchorAnimX('r');
                        break;
                }

                wrap.show();
                wrapAnim = Ext.apply({}, obj);
                delete wrapAnim.listeners;
                wrapAnim = new Ext.fx.Anim(Ext.applyIf(wrapAnim, {
                    target: wrap,
                    duration: 500,
                    easing: 'ease-out',
                    from: slideOut ? anim.to : anim.from,
                    to: slideOut ? anim.from : anim.to
                }));

                // In the absence of a callback, this listener MUST be added first
                wrapAnim.on('afteranimate', function() {
                    var el = Ext.fly(dom, '_anim');

                    el.setStyle(originalStyles);
                    if (slideOut) {
                        if (obj.useDisplay) {
                            el.setDisplayed(false);
                        } else {
                            el.hide();
                        }
                    }
                    if (wrap.dom) {
                        if (wrap.dom.parentNode) {
                            wrap.dom.parentNode.insertBefore(el.dom, wrap.dom);
                        } else {
                            wrapDomParentNode.appendChild(el.dom);
                        }
                        wrap.remove();
                    }
                    // The unwrap will have reset all descendant scrollTops. Restore them if we cached them.
                    if (restoreScroll) {
                        restoreScroll();
                    }
                    // kill the no-op element animation created below
                    animScope.end();
                });
                // Add configured listeners after
                if (listeners) {
                    wrapAnim.on(listeners);
                }
            };

            me.animate({
                // See "A Note About Wrapped Animations" at the top of this class:
                duration: obj.duration ? Math.max(obj.duration, 500) * 2 : 1000,
                listeners: {
                    beforeanimate: beforeAnim // kick off the wrap animation
                }
            });
            return me;
        },

        /**
         * Slides the element out of view. An anchor point can be optionally passed to set the end point for the slide
         * effect. When the effect is completed, the element will be hidden (visibility = 'hidden') but block elements will
         * still take up space in the document. The element must be removed from the DOM using the 'remove' config option if
         * desired. This function automatically handles wrapping the element with a fixed-size container if needed. See the
         * Fx class overview for valid anchor point options. Usage:
         *
         *     // default: slide the element out to the top
         *     el.slideOut();
         *
         *     // custom: slide the element out to the right with a 2-second duration
         *     el.slideOut('r', { duration: 2000 });
         *
         *     // common config options shown with default values
         *     el.slideOut('t', {
         *         easing: 'easeOut',
         *         duration: 500,
         *         remove: false,
         *         useDisplay: false
         *     });
         *
         * @param {String} anchor (optional) One of the valid Fx anchor positions (defaults to top: 't')
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.dom.Element} The Element
         */
        slideOut: function(anchor, o) {
            return this.slideIn(anchor, o, true);
        },

        /**
         * Fades the element out while slowly expanding it in all directions. When the effect is completed, the element will
         * be hidden (visibility = 'hidden') but block elements will still take up space in the document. Usage:
         *
         *     // default
         *     el.puff();
         *
         *     // common config options shown with default values
         *     el.puff({
         *         easing: 'easeOut',
         *         duration: 500,
         *         useDisplay: false
         *     });
         *
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.dom.Element} The Element
         */
        puff: function(obj) {
            var me = this,
                dom = me.dom,
                beforeAnim,
                box = me.getBox(),
                originalStyles = me.getStyles('width', 'height', 'left', 'right', 'top', 'bottom', 'position', 'z-index', 'font-size', 'opacity', true);

           obj = Ext.applyIf(obj || {}, {
                easing: 'ease-out',
                duration: 500,
                useDisplay: false
            });

            beforeAnim = function() {
                var el = Ext.fly(dom, '_anim');

                el.clearOpacity();
                el.show();
                this.to = {
                    width: box.width * 2,
                    height: box.height * 2,
                    x: box.x - (box.width / 2),
                    y: box.y - (box.height /2),
                    opacity: 0,
                    fontSize: '200%'
                };
                this.on('afteranimate',function() {
                    var el = Ext.fly(dom, '_anim');
                    if (el) {
                        if (obj.useDisplay) {
                            el.setDisplayed(false);
                        } else {
                            el.hide();
                        }
                        el.setStyle(originalStyles);
                        Ext.callback(obj.callback, obj.scope);
                    }
                });
            };

            me.animate({
                duration: obj.duration,
                easing: obj.easing,
                listeners: {
                    beforeanimate: {
                        fn: beforeAnim
                    }
                }
            });
            return me;
        },

        /**
         * Blinks the element as if it was clicked and then collapses on its center (similar to switching off a television).
         * When the effect is completed, the element will be hidden (visibility = 'hidden') but block elements will still
         * take up space in the document. The element must be removed from the DOM using the 'remove' config option if
         * desired. Usage:
         *
         *     // default
         *     el.switchOff();
         *
         *     // all config options shown with default values
         *     el.switchOff({
         *         easing: 'easeIn',
         *         duration: .3,
         *         remove: false,
         *         useDisplay: false
         *     });
         *
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.dom.Element} The Element
         */
        switchOff: function(obj) {
            var me = this,
                dom = me.dom,
                beforeAnim;

            obj = Ext.applyIf(obj || {}, {
                easing: 'ease-in',
                duration: 500,
                remove: false,
                useDisplay: false
            });

            beforeAnim = function() {
                var el = Ext.fly(dom, '_anim'),
                    animScope = this,
                    size = el.getSize(),
                    xy = el.getXY(),
                    keyframe, position;

                el.clearOpacity();
                el.clip();
                position = el.getPositioning();

                keyframe = new Ext.fx.Animator({
                    target: dom,
                    duration: obj.duration,
                    easing: obj.easing,
                    keyframes: {
                        33: {
                            opacity: 0.3
                        },
                        66: {
                            height: 1,
                            y: xy[1] + size.height / 2
                        },
                        100: {
                            width: 1,
                            x: xy[0] + size.width / 2
                        }
                    }
                });
                keyframe.on('afteranimate', function() {
                    var el = Ext.fly(dom, '_anim');
                    if (obj.useDisplay) {
                        el.setDisplayed(false);
                    } else {
                        el.hide();
                    }
                    el.clearOpacity();
                    el.setPositioning(position);
                    el.setSize(size);
                    // kill the no-op element animation created below
                    animScope.end();
                });
            };

            me.animate({
                // See "A Note About Wrapped Animations" at the top of this class:
                duration: (Math.max(obj.duration, 500) * 2),
                listeners: {
                    beforeanimate: {
                        fn: beforeAnim
                    }
                }
            });
            return me;
        },

        /**
         * Shows a ripple of exploding, attenuating borders to draw attention to an Element. Usage:
         *
         *     // default: a single light blue ripple
         *     el.frame();
         *
         *     // custom: 3 red ripples lasting 3 seconds total
         *     el.frame("#ff0000", 3, { duration: 3000 });
         *
         *     // common config options shown with default values
         *     el.frame("#C3DAF9", 1, {
         *         duration: 1000 // duration of each individual ripple.
         *         // Note: Easing is not configurable and will be ignored if included
         *     });
         *
         * @param {String} [color='#C3DAF9'] The hex color value for the border.
         * @param {Number} [count=1] The number of ripples to display.
         * @param {Object} [options] Object literal with any of the Fx config options
         * @return {Ext.dom.Element} The Element
         */
        frame : function(color, count, obj){
            var me = this,
                dom = me.dom,
                beforeAnim;

            color = color || '#C3DAF9';
            count = count || 1;
            obj = obj || {};

            beforeAnim = function() {
                var el = Ext.fly(dom, '_anim'),
                    animScope = this,
                    box,
                    proxy, proxyAnim;

                el.show();
                box = el.getBox();
                proxy = Ext.getBody().createChild({
                    id: el.dom.id + '-anim-proxy',
                    style: {
                        position : 'absolute',
                        'pointer-events': 'none',
                        'z-index': 35000,
                        border : '0px solid ' + color
                    }
                });

                proxyAnim = new Ext.fx.Anim({
                    target: proxy,
                    duration: obj.duration || 1000,
                    iterations: count,
                    from: {
                        top: box.y,
                        left: box.x,
                        borderWidth: 0,
                        opacity: 1,
                        height: box.height,
                        width: box.width
                    },
                    to: {
                        top: box.y - 20,
                        left: box.x - 20,
                        borderWidth: 10,
                        opacity: 0,
                        height: box.height + 40,
                        width: box.width + 40
                    }
                });
                proxyAnim.on('afteranimate', function() {
                    proxy.remove();
                    // kill the no-op element animation created below
                    animScope.end();
                });
            };

            me.animate({
                // See "A Note About Wrapped Animations" at the top of this class:
                duration: (Math.max(obj.duration, 500) * 2) || 2000,
                listeners: {
                    beforeanimate: {
                        fn: beforeAnim
                    }
                }
            });
            return me;
        },

        /**
         * Slides the element while fading it out of view. An anchor point can be optionally passed to set the ending point
         * of the effect. Usage:
         *
         *     // default: slide the element downward while fading out
         *     el.ghost();
         *
         *     // custom: slide the element out to the right with a 2-second duration
         *     el.ghost('r', { duration: 2000 });
         *
         *     // common config options shown with default values
         *     el.ghost('b', {
         *         easing: 'easeOut',
         *         duration: 500
         *     });
         *
         * @param {String} anchor (optional) One of the valid Fx anchor positions (defaults to bottom: 'b')
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.dom.Element} The Element
         */
        ghost: function(anchor, obj) {
            var me = this,
                dom = me.dom,
                beforeAnim;

            anchor = anchor || "b";
            beforeAnim = function() {
                var el = Ext.fly(dom, '_anim'),
                    width = el.getWidth(),
                    height = el.getHeight(),
                    xy = el.getXY(),
                    position = el.getPositioning(),
                    to = {
                        opacity: 0
                    };
                switch (anchor) {
                    case 't':
                        to.y = xy[1] - height;
                        break;
                    case 'l':
                        to.x = xy[0] - width;
                        break;
                    case 'r':
                        to.x = xy[0] + width;
                        break;
                    case 'b':
                        to.y = xy[1] + height;
                        break;
                    case 'tl':
                        to.x = xy[0] - width;
                        to.y = xy[1] - height;
                        break;
                    case 'bl':
                        to.x = xy[0] - width;
                        to.y = xy[1] + height;
                        break;
                    case 'br':
                        to.x = xy[0] + width;
                        to.y = xy[1] + height;
                        break;
                    case 'tr':
                        to.x = xy[0] + width;
                        to.y = xy[1] - height;
                        break;
                }
                this.to = to;
                this.on('afteranimate', function () {
                    var el = Ext.fly(dom, '_anim');
                    if (el) {
                        el.hide();
                        el.clearOpacity();
                        el.setPositioning(position);
                    }
                });
            };

            me.animate(Ext.applyIf(obj || {}, {
                duration: 500,
                easing: 'ease-out',
                listeners: {
                    beforeanimate: beforeAnim
                }
            }));
            return me;
        },

        /**
         * Highlights the Element by setting a color (applies to the background-color by default, but can be changed using
         * the "attr" config option) and then fading back to the original color. If no original color is available, you
         * should provide the "endColor" config option which will be cleared after the animation. Usage:
         *
         *     // default: highlight background to yellow
         *     el.highlight();
         *
         *     // custom: highlight foreground text to blue for 2 seconds
         *     el.highlight("0000ff", { attr: 'color', duration: 2000 });
         *
         *     // common config options shown with default values
         *     el.highlight("ffff9c", {
         *         attr: "backgroundColor", //can be any valid CSS property (attribute) that supports a color value
         *         endColor: (current color) or "ffffff",
         *         easing: 'easeIn',
         *         duration: 1000
         *     });
         *
         * @param {String} color (optional) The highlight color. Should be a 6 char hex color without the leading #
         * (defaults to yellow: 'ffff9c')
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.dom.Element} The Element
         */
        highlight: function(color, o) {
            var me = this,
                dom = me.dom,
                from = {},
                restore, to, attr, lns, event, fn;

            // Cannot set bckground-color on table elements. Find div elements to highlight.
            if (dom.tagName.match(me.tableTagRe)) {
                return me.select('div').highlight(color, o);
            }

            o = o || {};
            lns = o.listeners || {};
            attr = o.attr || 'backgroundColor';
            from[attr] = color || 'ffff9c';

            if (!o.to) {
                to = {};
                to[attr] = o.endColor || me.getColor(attr, 'ffffff', '');
            }
            else {
                to = o.to;
            }

            // Don't apply directly on lns, since we reference it in our own callbacks below
            o.listeners = Ext.apply(Ext.apply({}, lns), {
                beforeanimate: function() {
                    restore = dom.style[attr];
                    var el = Ext.fly(dom, '_anim');
                    el.clearOpacity();
                    el.show();

                    event = lns.beforeanimate;
                    if (event) {
                        fn = event.fn || event;
                        return fn.apply(event.scope || lns.scope || window, arguments);
                    }
                },
                afteranimate: function() {
                    if (dom) {
                        dom.style[attr] = restore;
                    }

                    event = lns.afteranimate;
                    if (event) {
                        fn = event.fn || event;
                        fn.apply(event.scope || lns.scope || window, arguments);
                    }
                }
            });

            me.animate(Ext.apply({}, o, {
                duration: 1000,
                easing: 'ease-in',
                from: from,
                to: to
            }));
            return me;
        },

       /**
        * Creates a pause before any subsequent queued effects begin. If there are no effects queued after the pause it will
        * have no effect. Usage:
        *
        *     el.pause(1);
        *
        * @deprecated 4.0 Use the `delay` config to {@link #animate} instead.
        * @param {Number} seconds The length of time to pause (in seconds)
        * @return {Ext.Element} The Element
        */
        pause: function(ms) {
            var me = this;
            Ext.fx.Manager.setFxDefaults(me.id, {
                delay: ms
            });
            return me;
        },

        /**
         * Fade an element in (from transparent to opaque). The ending opacity can be specified using the `opacity`
         * config option. Usage:
         *
         *     // default: fade in from opacity 0 to 100%
         *     el.fadeIn();
         *
         *     // custom: fade in from opacity 0 to 75% over 2 seconds
         *     el.fadeIn({ opacity: .75, duration: 2000});
         *
         *     // common config options shown with default values
         *     el.fadeIn({
         *         opacity: 1, //can be any value between 0 and 1 (e.g. .5)
         *         easing: 'easeOut',
         *         duration: 500
         *     });
         *
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.Element} The Element
         */
        fadeIn: function(o) {
            var me = this,
                dom = me.dom;

            me.animate(Ext.apply({}, o, {
                opacity: 1,
                internalListeners: {
                    beforeanimate: function(anim){
                        // restore any visibility/display that may have
                        // been applied by a fadeout animation
                        var el = Ext.fly(dom, '_anim');
                        if (el.isStyle('display', 'none')) {
                            el.setDisplayed('');
                        } else {
                            el.show();
                        }
                    }
                }
            }));
            return this;
        },

        /**
         * Fade an element out (from opaque to transparent). The ending opacity can be specified using the `opacity`
         * config option. Note that IE may require `useDisplay:true` in order to redisplay correctly.
         * Usage:
         *
         *     // default: fade out from the element's current opacity to 0
         *     el.fadeOut();
         *
         *     // custom: fade out from the element's current opacity to 25% over 2 seconds
         *     el.fadeOut({ opacity: .25, duration: 2000});
         *
         *     // common config options shown with default values
         *     el.fadeOut({
         *         opacity: 0, //can be any value between 0 and 1 (e.g. .5)
         *         easing: 'easeOut',
         *         duration: 500,
         *         remove: false,
         *         useDisplay: false
         *     });
         *
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.Element} The Element
         */
        fadeOut: function(o) {
            var me = this,
                dom = me.dom;

            o = Ext.apply({
                opacity: 0,
                internalListeners: {
                    afteranimate: function(anim){
                        if (dom && anim.to.opacity === 0) {
                            var el = Ext.fly(dom, '_anim');
                            if (o.useDisplay) {
                                el.setDisplayed(false);
                            } else {
                                el.hide();
                            }
                        }
                    }
                }
            }, o);
            me.animate(o);
            return me;
        },

        /**
         * Animates the transition of an element's dimensions from a starting height/width to an ending height/width. This
         * method is a convenience implementation of {@link #shift}. Usage:
         *
         *     // change height and width to 100x100 pixels
         *     el.scale(100, 100);
         *
         *     // common config options shown with default values.  The height and width will default to
         *     // the element's existing values if passed as null.
         *     el.scale(
         *         [element's width],
         *         [element's height], {
         *             easing: 'easeOut',
         *             duration: 350
         *         }
         *     );
         *
         * @deprecated 4.0 Just use {@link #animate} instead.
         * @param {Number} width The new width (pass undefined to keep the original width)
         * @param {Number} height The new height (pass undefined to keep the original height)
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.Element} The Element
         */
        scale: function(w, h, o) {
            this.animate(Ext.apply({}, o, {
                width: w,
                height: h
            }));
            return this;
        },

        /**
         * Animates the transition of any combination of an element's dimensions, xy position and/or opacity. Any of these
         * properties not specified in the config object will not be changed. This effect requires that at least one new
         * dimension, position or opacity setting must be passed in on the config object in order for the function to have
         * any effect. Usage:
         *
         *     // slide the element horizontally to x position 200 while changing the height and opacity
         *     el.shift({ x: 200, height: 50, opacity: .8 });
         *
         *     // common config options shown with default values.
         *     el.shift({
         *         width: [element's width],
         *         height: [element's height],
         *         x: [element's x position],
         *         y: [element's y position],
         *         opacity: [element's opacity],
         *         easing: 'easeOut',
         *         duration: 350
         *     });
         *
         * @deprecated 4.0 Just use {@link #animate} instead.
         * @param {Object} options Object literal with any of the Fx config options
         * @return {Ext.Element} The Element
         */
        shift: function(config) {
            this.animate(config);
            return this;
        },

        /**
         * @private
         */
        anchorAnimX: function(anchor) {
            var xName = (anchor === 'l') ? 'right' : 'left';
            this.dom.style[xName] = '0px';
        }
    });