The source code

    (function(){
        // contants
        var NULL = null,
            UNDEFINED = undefined,
            TRUE = true,
            FALSE = false,
            SETX = "setX",
            SETY = "setY",
            SETXY = "setXY",
            LEFT = "left",
            BOTTOM = "bottom",
            TOP = "top",
            RIGHT = "right",
            HEIGHT = "height",
            WIDTH = "width",
            POINTS = "points",
            HIDDEN = "hidden",
            ABSOLUTE = "absolute",
            VISIBLE = "visible",
            MOTION = "motion",
            POSITION = "position",
            EASEOUT = "easeOut",
            /*
             * Use a light flyweight here since we are using so many callbacks and are always assured a DOM element
             */
            flyEl = new Ext.Element.Flyweight(),
            queues = {},
            getObject = function(o){
                return o || {};
            },
            fly = function(dom){
                flyEl.dom = dom;
                flyEl.id = Ext.id(dom);
                return flyEl;
            },
            /*
             * Queueing now stored outside of the element due to closure issues
             */
            getQueue = function(id){
                if(!queues[id]){
                    queues[id] = [];
                }
                return queues[id];
            },
            setQueue = function(id, value){
                queues[id] = value;
            };

    //Notifies Element that fx methods are available
    Ext.enableFx = TRUE;

    /**
     * @class Ext.Fx
     * <p>A class to provide basic animation and visual effects support.  <b>Note:</b> This class is automatically applied
     * to the {@link Ext.Element} interface when included, so all effects calls should be performed via {@link Ext.Element}.
     * Conversely, since the effects are not actually defined in {@link Ext.Element}, Ext.Fx <b>must</b> be
     * {@link Ext#enableFx included} in order for the Element effects to work.</p><br/>
     *
     * <p><b><u>Method Chaining</u></b></p>
     * <p>It is important to note that although the Fx methods and many non-Fx Element methods support "method chaining" in that
     * they return the Element object itself as the method return value, it is not always possible to mix the two in a single
     * method chain.  The Fx methods use an internal effects queue so that each effect can be properly timed and sequenced.
     * Non-Fx methods, on the other hand, have no such internal queueing and will always execute immediately.  For this reason,
     * while it may be possible to mix certain Fx and non-Fx method calls in a single chain, it may not always provide the
     * expected results and should be done with care.  Also see <tt>{@link #callback}</tt>.</p><br/>
     *
     * <p><b><u>Anchor Options for Motion Effects</u></b></p>
     * <p>Motion effects support 8-way anchoring, meaning that you can choose one of 8 different anchor points on the Element
     * that will serve as either the start or end point of the animation.  Following are all of the supported anchor positions:</p>
    <pre>
    Value  Description
    -----  -----------------------------
    tl     The top left corner
    t      The center of the top edge
    tr     The top right corner
    l      The center of the left edge
    r      The center of the right edge
    bl     The bottom left corner
    b      The center of the bottom edge
    br     The bottom right corner
    </pre>
     * <b>Note</b>: some Fx methods accept specific custom config parameters.  The options shown in the Config Options
     * section below are common options that can be passed to any Fx method unless otherwise noted.</b>
     *
     * @cfg {Function} callback A function called when the effect is finished.  Note that effects are queued internally by the
     * Fx class, so a callback is not required to specify another effect -- effects can simply be chained together
     * and called in sequence (see note for <b><u>Method Chaining</u></b> above), for example:<pre><code>
     * el.slideIn().highlight();
     * </code></pre>
     * The callback is intended for any additional code that should run once a particular effect has completed. The Element
     * being operated upon is passed as the first parameter.
     *
     * @cfg {Object} scope The scope (<code>this</code> reference) in which the <tt>{@link #callback}</tt> function is executed. Defaults to the browser window.
     *
     * @cfg {String} easing A valid Ext.lib.Easing value for the effect:</p><div class="mdetail-params"><ul>
     * <li><b><tt>backBoth</tt></b></li>
     * <li><b><tt>backIn</tt></b></li>
     * <li><b><tt>backOut</tt></b></li>
     * <li><b><tt>bounceBoth</tt></b></li>
     * <li><b><tt>bounceIn</tt></b></li>
     * <li><b><tt>bounceOut</tt></b></li>
     * <li><b><tt>easeBoth</tt></b></li>
     * <li><b><tt>easeBothStrong</tt></b></li>
     * <li><b><tt>easeIn</tt></b></li>
     * <li><b><tt>easeInStrong</tt></b></li>
     * <li><b><tt>easeNone</tt></b></li>
     * <li><b><tt>easeOut</tt></b></li>
     * <li><b><tt>easeOutStrong</tt></b></li>
     * <li><b><tt>elasticBoth</tt></b></li>
     * <li><b><tt>elasticIn</tt></b></li>
     * <li><b><tt>elasticOut</tt></b></li>
     * </ul></div>
     *
     * @cfg {String} afterCls A css class to apply after the effect
     * @cfg {Number} duration The length of time (in seconds) that the effect should last
     *
     * @cfg {Number} endOpacity Only applicable for {@link #fadeIn} or {@link #fadeOut}, a number between
     * <tt>0</tt> and <tt>1</tt> inclusive to configure the ending opacity value.
     *
     * @cfg {Boolean} remove Whether the Element should be removed from the DOM and destroyed after the effect finishes
     * @cfg {Boolean} useDisplay Whether to use the <i>display</i> CSS property instead of <i>visibility</i> when hiding Elements (only applies to
     * effects that end with the element being visually hidden, ignored otherwise)
     * @cfg {String/Object/Function} afterStyle A style specification string, e.g. <tt>"width:100px"</tt>, or an object
     * in the form <tt>{width:"100px"}</tt>, or a function which returns such a specification that will be applied to the
     * Element after the effect finishes.
     * @cfg {Boolean} block Whether the effect should block other effects from queueing while it runs
     * @cfg {Boolean} concurrent Whether to allow subsequently-queued effects to run at the same time as the current effect, or to ensure that they run in sequence
     * @cfg {Boolean} stopFx Whether preceding effects should be stopped and removed before running current effect (only applies to non blocking effects)
     */
    Ext.Fx = {

        // private - calls the function taking arguments from the argHash based on the key.  Returns the return value of the function.
        //           this is useful for replacing switch statements (for example).
        switchStatements : function(key, fn, argHash){
            return fn.apply(this, argHash[key]);
        },

        /**
         * 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:
         *<pre><code>
    // 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: 2 });

    // common config options shown with default values
    el.slideIn('t', {
        easing: 'easeOut',
        duration: .5
    });
    </code></pre>
         * @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.Element} The Element
         */
        slideIn : function(anchor, o){
            o = getObject(o);
            var me = this,
                dom = me.dom,
                st = dom.style,
                xy,
                r,
                b,
                wrap,
                after,
                st,
                args,
                pt,
                bw,
                bh;

            anchor = anchor || "t";

            me.queueFx(o, function(){
                xy = fly(dom).getXY();
                // fix display to visibility
                fly(dom).fixDisplay();

                // restore values after effect
                r = fly(dom).getFxRestore();
                b = {x: xy[0], y: xy[1], 0: xy[0], 1: xy[1], width: dom.offsetWidth, height: dom.offsetHeight};
                b.right = b.x + b.width;
                b.bottom = b.y + b.height;

                // fixed size for slide
                fly(dom).setWidth(b.width).setHeight(b.height);

                // wrap if needed
                wrap = fly(dom).fxWrap(r.pos, o, HIDDEN);

                st.visibility = VISIBLE;
                st.position = ABSOLUTE;

                // clear out temp styles after slide and unwrap
                function after(){
                     fly(dom).fxUnwrap(wrap, r.pos, o);
                     st.width = r.width;
                     st.height = r.height;
                     fly(dom).afterFx(o);
                }

                // time to calculate the positions
                pt = {to: [b.x, b.y]};
                bw = {to: b.width};
                bh = {to: b.height};

                function argCalc(wrap, style, ww, wh, sXY, sXYval, s1, s2, w, h, p){
                    var ret = {};
                    fly(wrap).setWidth(ww).setHeight(wh);
                    if(fly(wrap)[sXY]){
                        fly(wrap)[sXY](sXYval);
                    }
                    style[s1] = style[s2] = "0";
                    if(w){
                        ret.width = w;
                    }
                    if(h){
                        ret.height = h;
                    }
                    if(p){
                        ret.points = p;
                    }
                    return ret;
                };

                args = fly(dom).switchStatements(anchor.toLowerCase(), argCalc, {
                        t  : [wrap, st, b.width, 0, NULL, NULL, LEFT, BOTTOM, NULL, bh, NULL],
                        l  : [wrap, st, 0, b.height, NULL, NULL, RIGHT, TOP, bw, NULL, NULL],
                        r  : [wrap, st, b.width, b.height, SETX, b.right, LEFT, TOP, NULL, NULL, pt],
                        b  : [wrap, st, b.width, b.height, SETY, b.bottom, LEFT, TOP, NULL, bh, pt],
                        tl : [wrap, st, 0, 0, NULL, NULL, RIGHT, BOTTOM, bw, bh, pt],
                        bl : [wrap, st, 0, 0, SETY, b.y + b.height, RIGHT, TOP, bw, bh, pt],
                        br : [wrap, st, 0, 0, SETXY, [b.right, b.bottom], LEFT, TOP, bw, bh, pt],
                        tr : [wrap, st, 0, 0, SETX, b.x + b.width, LEFT, BOTTOM, bw, bh, pt]
                    });

                st.visibility = VISIBLE;
                fly(wrap).show();

                arguments.callee.anim = fly(wrap).fxanim(args,
                    o,
                    MOTION,
                    .5,
                    EASEOUT,
                    after);
            });
            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:
         *<pre><code>
    // 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: 2 });

    // common config options shown with default values
    el.slideOut('t', {
        easing: 'easeOut',
        duration: .5,
        remove: false,
        useDisplay: false
    });
    </code></pre>
         * @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.Element} The Element
         */
        slideOut : function(anchor, o){
            o = getObject(o);
            var me = this,
                dom = me.dom,
                st = dom.style,
                xy = me.getXY(),
                wrap,
                r,
                b,
                a,
                zero = {to: 0};

            anchor = anchor || "t";

            me.queueFx(o, function(){

                // restore values after effect
                r = fly(dom).getFxRestore();
                b = {x: xy[0], y: xy[1], 0: xy[0], 1: xy[1], width: dom.offsetWidth, height: dom.offsetHeight};
                b.right = b.x + b.width;
                b.bottom = b.y + b.height;

                // fixed size for slide
                fly(dom).setWidth(b.width).setHeight(b.height);

                // wrap if needed
                wrap = fly(dom).fxWrap(r.pos, o, VISIBLE);

                st.visibility = VISIBLE;
                st.position = ABSOLUTE;
                fly(wrap).setWidth(b.width).setHeight(b.height);

                function after(){
                    o.useDisplay ? fly(dom).setDisplayed(FALSE) : fly(dom).hide();
                    fly(dom).fxUnwrap(wrap, r.pos, o);
                    st.width = r.width;
                    st.height = r.height;
                    fly(dom).afterFx(o);
                }

                function argCalc(style, s1, s2, p1, v1, p2, v2, p3, v3){
                    var ret = {};

                    style[s1] = style[s2] = "0";
                    ret[p1] = v1;
                    if(p2){
                        ret[p2] = v2;
                    }
                    if(p3){
                        ret[p3] = v3;
                    }

                    return ret;
                };

                a = fly(dom).switchStatements(anchor.toLowerCase(), argCalc, {
                    t  : [st, LEFT, BOTTOM, HEIGHT, zero],
                    l  : [st, RIGHT, TOP, WIDTH, zero],
                    r  : [st, LEFT, TOP, WIDTH, zero, POINTS, {to : [b.right, b.y]}],
                    b  : [st, LEFT, TOP, HEIGHT, zero, POINTS, {to : [b.x, b.bottom]}],
                    tl : [st, RIGHT, BOTTOM, WIDTH, zero, HEIGHT, zero],
                    bl : [st, RIGHT, TOP, WIDTH, zero, HEIGHT, zero, POINTS, {to : [b.x, b.bottom]}],
                    br : [st, LEFT, TOP, WIDTH, zero, HEIGHT, zero, POINTS, {to : [b.x + b.width, b.bottom]}],
                    tr : [st, LEFT, BOTTOM, WIDTH, zero, HEIGHT, zero, POINTS, {to : [b.right, b.y]}]
                });

                arguments.callee.anim = fly(wrap).fxanim(a,
                    o,
                    MOTION,
                    .5,
                    EASEOUT,
                    after);
            });
            return me;
        },

        /**
         * 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.
         * The element must be removed from the DOM using the 'remove' config option if desired.
         * Usage:
         *<pre><code>
    // default
    el.puff();

    // common config options shown with default values
    el.puff({
        easing: 'easeOut',
        duration: .5,
        remove: false,
        useDisplay: false
    });
    </code></pre>
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.Element} The Element
         */
        puff : function(o){
            o = getObject(o);
            var me = this,
                dom = me.dom,
                st = dom.style,
                width,
                height,
                r;

            me.queueFx(o, function(){
                width = fly(dom).getWidth();
                height = fly(dom).getHeight();
                fly(dom).clearOpacity();
                fly(dom).show();

                // restore values after effect
                r = fly(dom).getFxRestore();

                function after(){
                    o.useDisplay ? fly(dom).setDisplayed(FALSE) : fly(dom).hide();
                    fly(dom).clearOpacity();
                    fly(dom).setPositioning(r.pos);
                    st.width = r.width;
                    st.height = r.height;
                    st.fontSize = '';
                    fly(dom).afterFx(o);
                }

                arguments.callee.anim = fly(dom).fxanim({
                        width : {to : fly(dom).adjustWidth(width * 2)},
                        height : {to : fly(dom).adjustHeight(height * 2)},
                        points : {by : [-width * .5, -height * .5]},
                        opacity : {to : 0},
                        fontSize: {to : 200, unit: "%"}
                    },
                    o,
                    MOTION,
                    .5,
                    EASEOUT,
                     after);
            });
            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:
         *<pre><code>
    // default
    el.switchOff();

    // all config options shown with default values
    el.switchOff({
        easing: 'easeIn',
        duration: .3,
        remove: false,
        useDisplay: false
    });
    </code></pre>
         * @param {Object} options (optional) Object literal with any of the Fx config options
         * @return {Ext.Element} The Element
         */
        switchOff : function(o){
            o = getObject(o);
            var me = this,
                dom = me.dom,
                st = dom.style,
                r;

            me.queueFx(o, function(){
                fly(dom).clearOpacity();
                fly(dom).clip();

                // restore values after effect
                r = fly(dom).getFxRestore();

                function after(){
                    o.useDisplay ? fly(dom).setDisplayed(FALSE) : fly(dom).hide();
                    fly(dom).clearOpacity();
                    fly(dom).setPositioning(r.pos);
                    st.width = r.width;
                    st.height = r.height;
                    fly(dom).afterFx(o);
                };

                fly(dom).fxanim({opacity : {to : 0.3}},
                    NULL,
                    NULL,
                    .1,
                    NULL,
                    function(){
                        fly(dom).clearOpacity();
                            (function(){
                                fly(dom).fxanim({
                                    height : {to : 1},
                                    points : {by : [0, fly(dom).getHeight() * .5]}
                                },
                                o,
                                MOTION,
                                0.3,
                                'easeIn',
                                after);
                            }).defer(100);
                    });
            });
            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:
    <pre><code>
    // default: highlight background to yellow
    el.highlight();

    // custom: highlight foreground text to blue for 2 seconds
    el.highlight("0000ff", { attr: 'color', duration: 2 });

    // common config options shown with default values
    el.highlight("ffff9c", {
        attr: "background-color", //can be any valid CSS property (attribute) that supports a color value
        endColor: (current color) or "ffffff",
        easing: 'easeIn',
        duration: 1
    });
    </code></pre>
         * @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.Element} The Element
         */
        highlight : function(color, o){
            o = getObject(o);
            var me = this,
                dom = me.dom,
                attr = o.attr || "backgroundColor",
                a = {},
                restore;

            me.queueFx(o, function(){
                fly(dom).clearOpacity();
                fly(dom).show();

                function after(){
                    dom.style[attr] = restore;
                    fly(dom).afterFx(o);
                }
                restore = dom.style[attr];
                a[attr] = {from: color || "ffff9c", to: o.endColor || fly(dom).getColor(attr) || "ffffff"};
                arguments.callee.anim = fly(dom).fxanim(a,
                    o,
                    'color',
                    1,
                    'easeIn',
                    after);
            });
            return me;
        },

       /**
        * Shows a ripple of exploding, attenuating borders to draw attention to an Element.
        * Usage:
    <pre><code>
    // default: a single light blue ripple
    el.frame();

    // custom: 3 red ripples lasting 3 seconds total
    el.frame("ff0000", 3, { duration: 3 });

    // common config options shown with default values
    el.frame("C3DAF9", 1, {
        duration: 1 //duration of each individual ripple.
        // Note: Easing is not configurable and will be ignored if included
    });
    </code></pre>
        * @param {String} color (optional) The color of the border.  Should be a 6 char hex color without the leading # (defaults to light blue: 'C3DAF9').
        * @param {Number} count (optional) The number of ripples to display (defaults to 1)
        * @param {Object} options (optional) Object literal with any of the Fx config options
        * @return {Ext.Element} The Element
        */
        frame : function(color, count, o){
            o = getObject(o);
            var me = this,
                dom = me.dom,
                proxy,
                active;

            me.queueFx(o, function(){
                color = color || '#C3DAF9';
                if(color.length == 6){
                    color = '#' + color;
                }
                count = count || 1;
                fly(dom).show();

                var xy = fly(dom).getXY(),
                    b = {x: xy[0], y: xy[1], 0: xy[0], 1: xy[1], width: dom.offsetWidth, height: dom.offsetHeight},
                    queue = function(){
                        proxy = fly(document.body || document.documentElement).createChild({
                            style:{
                                position : ABSOLUTE,
                                'z-index': 35000, // yee haw
                                border : '0px solid ' + color
                            }
                        });
                        return proxy.queueFx({}, animFn);
                    };

                arguments.callee.anim = {
                    isAnimated: true,
                    stop: function() {
                        count = 0;
                        proxy.stopFx();
                    }
                };

                function animFn(){
                    var scale = Ext.isBorderBox ? 2 : 1;
                    active = proxy.anim({
                        top : {from : b.y, to : b.y - 20},
                        left : {from : b.x, to : b.x - 20},
                        borderWidth : {from : 0, to : 10},
                        opacity : {from : 1, to : 0},
                        height : {from : b.height, to : b.height + 20 * scale},
                        width : {from : b.width, to : b.width + 20 * scale}
                    },{
                        duration: o.duration || 1,
                        callback: function() {
                            proxy.remove();
                            --count > 0 ? queue() : fly(dom).afterFx(o);
                        }
                    });
                    arguments.callee.anim = {
                        isAnimated: true,
                        stop: function(){
                            active.stop();
                        }
                    };
                };
                queue();
            });
            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:
    <pre><code>
    el.pause(1);
    </code></pre>
        * @param {Number} seconds The length of time to pause (in seconds)
        * @return {Ext.Element} The Element
        */
        pause : function(seconds){
            var dom = this.dom,
                t;

            this.queueFx({}, function(){
                t = setTimeout(function(){
                    fly(dom).afterFx({});
                }, seconds * 1000);
                arguments.callee.anim = {
                    isAnimated: true,
                    stop: function(){
                        clearTimeout(t);
                        fly(dom).afterFx({});
                    }
                };
            });
            return this;
        },

       /**
        * Fade an element in (from transparent to opaque).  The ending opacity can be specified
        * using the <tt>{@link #endOpacity}</tt> config option.
        * Usage:
    <pre><code>
    // default: fade in from opacity 0 to 100%
    el.fadeIn();

    // custom: fade in from opacity 0 to 75% over 2 seconds
    el.fadeIn({ endOpacity: .75, duration: 2});

    // common config options shown with default values
    el.fadeIn({
        endOpacity: 1, //can be any value between 0 and 1 (e.g. .5)
        easing: 'easeOut',
        duration: .5
    });
    </code></pre>
        * @param {Object} options (optional) Object literal with any of the Fx config options
        * @return {Ext.Element} The Element
        */
        fadeIn : function(o){
            o = getObject(o);
            var me = this,
                dom = me.dom,
                to = o.endOpacity || 1;

            me.queueFx(o, function(){
                fly(dom).setOpacity(0);
                fly(dom).fixDisplay();
                dom.style.visibility = VISIBLE;
                arguments.callee.anim = fly(dom).fxanim({opacity:{to:to}},
                    o, NULL, .5, EASEOUT, function(){
                    if(to == 1){
                        fly(dom).clearOpacity();
                    }
                    fly(dom).afterFx(o);
                });
            });
            return me;
        },

       /**
        * Fade an element out (from opaque to transparent).  The ending opacity can be specified
        * using the <tt>{@link #endOpacity}</tt> config option.  Note that IE may require
        * <tt>{@link #useDisplay}:true</tt> in order to redisplay correctly.
        * Usage:
    <pre><code>
    // 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({ endOpacity: .25, duration: 2});

    // common config options shown with default values
    el.fadeOut({
        endOpacity: 0, //can be any value between 0 and 1 (e.g. .5)
        easing: 'easeOut',
        duration: .5,
        remove: false,
        useDisplay: false
    });
    </code></pre>
        * @param {Object} options (optional) Object literal with any of the Fx config options
        * @return {Ext.Element} The Element
        */
        fadeOut : function(o){
            o = getObject(o);
            var me = this,
                dom = me.dom,
                style = dom.style,
                to = o.endOpacity || 0;

            me.queueFx(o, function(){
                arguments.callee.anim = fly(dom).fxanim({
                    opacity : {to : to}},
                    o,
                    NULL,
                    .5,
                    EASEOUT,
                    function(){
                        if(to == 0){
                            Ext.Element.data(dom, 'visibilityMode') == Ext.Element.DISPLAY || o.useDisplay ?
                                style.display = "none" :
                                style.visibility = HIDDEN;

                            fly(dom).clearOpacity();
                        }
                        fly(dom).afterFx(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:
    <pre><code>
    // 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&#39;s existing values if passed as null.
    el.scale(
        [element&#39;s width],
        [element&#39;s height], {
            easing: 'easeOut',
            duration: .35
        }
    );
    </code></pre>
        * @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.shift(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:
    <pre><code>
    // 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&#39;s width],
        height: [element&#39;s height],
        x: [element&#39;s x position],
        y: [element&#39;s y position],
        opacity: [element&#39;s opacity],
        easing: 'easeOut',
        duration: .35
    });
    </code></pre>
        * @param {Object} options  Object literal with any of the Fx config options
        * @return {Ext.Element} The Element
        */
        shift : function(o){
            o = getObject(o);
            var dom = this.dom,
                a = {};

            this.queueFx(o, function(){
                for (var prop in o) {
                    if (o[prop] != UNDEFINED) {
                        a[prop] = {to : o[prop]};
                    }
                }

                a.width ? a.width.to = fly(dom).adjustWidth(o.width) : a;
                a.height ? a.height.to = fly(dom).adjustWidth(o.height) : a;

                if (a.x || a.y || a.xy) {
                    a.points = a.xy ||
                               {to : [ a.x ? a.x.to : fly(dom).getX(),
                                       a.y ? a.y.to : fly(dom).getY()]};
                }

                arguments.callee.anim = fly(dom).fxanim(a,
                    o,
                    MOTION,
                    .35,
                    EASEOUT,
                    function(){
                        fly(dom).afterFx(o);
                    });
            });
            return this;
        },

        /**
         * 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:
         *<pre><code>
    // 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: 2 });

    // common config options shown with default values
    el.ghost('b', {
        easing: 'easeOut',
        duration: .5,
        remove: false,
        useDisplay: false
    });
    </code></pre>
         * @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.Element} The Element
         */
        ghost : function(anchor, o){
            o = getObject(o);
            var me = this,
                dom = me.dom,
                st = dom.style,
                a = {opacity: {to: 0}, points: {}},
                pt = a.points,
                r,
                w,
                h;

            anchor = anchor || "b";

            me.queueFx(o, function(){
                // restore values after effect
                r = fly(dom).getFxRestore();
                w = fly(dom).getWidth();
                h = fly(dom).getHeight();

                function after(){
                    o.useDisplay ? fly(dom).setDisplayed(FALSE) : fly(dom).hide();
                    fly(dom).clearOpacity();
                    fly(dom).setPositioning(r.pos);
                    st.width = r.width;
                    st.height = r.height;
                    fly(dom).afterFx(o);
                }

                pt.by = fly(dom).switchStatements(anchor.toLowerCase(), function(v1,v2){ return [v1, v2];}, {
                   t  : [0, -h],
                   l  : [-w, 0],
                   r  : [w, 0],
                   b  : [0, h],
                   tl : [-w, -h],
                   bl : [-w, h],
                   br : [w, h],
                   tr : [w, -h]
                });

                arguments.callee.anim = fly(dom).fxanim(a,
                    o,
                    MOTION,
                    .5,
                    EASEOUT, after);
            });
            return me;
        },

        /**
         * Ensures that all effects queued after syncFx is called on the element are
         * run concurrently.  This is the opposite of {@link #sequenceFx}.
         * @return {Ext.Element} The Element
         */
        syncFx : function(){
            var me = this;
            me.fxDefaults = Ext.apply(me.fxDefaults || {}, {
                block : FALSE,
                concurrent : TRUE,
                stopFx : FALSE
            });
            return me;
        },

        /**
         * Ensures that all effects queued after sequenceFx is called on the element are
         * run in sequence.  This is the opposite of {@link #syncFx}.
         * @return {Ext.Element} The Element
         */
        sequenceFx : function(){
            var me = this;
            me.fxDefaults = Ext.apply(me.fxDefaults || {}, {
                block : FALSE,
                concurrent : FALSE,
                stopFx : FALSE
            });
            return me;
        },

        /* @private */
        nextFx : function(){
            var ef = getQueue(this.dom.id)[0];
            if(ef){
                ef.call(this);
            }
        },

        /**
         * Returns true if the element has any effects actively running or queued, else returns false.
         * @return {Boolean} True if element has active effects, else false
         */
        hasActiveFx : function(){
            return getQueue(this.dom.id)[0];
        },

        /**
         * Stops any running effects and clears the element's internal effects queue if it contains
         * any additional effects that haven't started yet.
         * @return {Ext.Element} The Element
         */
        stopFx : function(finish){
            var me = this,
                id = me.dom.id;
            if(me.hasActiveFx()){
                var cur = getQueue(id)[0];
                if(cur && cur.anim){
                    if(cur.anim.isAnimated){
                        setQueue(id, [cur]); //clear
                        cur.anim.stop(finish !== undefined ? finish : TRUE);
                    }else{
                        setQueue(id, []);
                    }
                }
            }
            return me;
        },

        /* @private */
        beforeFx : function(o){
            if(this.hasActiveFx() && !o.concurrent){
               if(o.stopFx){
                   this.stopFx();
                   return TRUE;
               }
               return FALSE;
            }
            return TRUE;
        },

        /**
         * Returns true if the element is currently blocking so that no other effect can be queued
         * until this effect is finished, else returns false if blocking is not set.  This is commonly
         * used to ensure that an effect initiated by a user action runs to completion prior to the
         * same effect being restarted (e.g., firing only one effect even if the user clicks several times).
         * @return {Boolean} True if blocking, else false
         */
        hasFxBlock : function(){
            var q = getQueue(this.dom.id);
            return q && q[0] && q[0].block;
        },

        /* @private */
        queueFx : function(o, fn){
            var me = fly(this.dom);
            if(!me.hasFxBlock()){
                Ext.applyIf(o, me.fxDefaults);
                if(!o.concurrent){
                    var run = me.beforeFx(o);
                    fn.block = o.block;
                    getQueue(me.dom.id).push(fn);
                    if(run){
                        me.nextFx();
                    }
                }else{
                    fn.call(me);
                }
            }
            return me;
        },

        /* @private */
        fxWrap : function(pos, o, vis){
            var dom = this.dom,
                wrap,
                wrapXY;
            if(!o.wrap || !(wrap = Ext.getDom(o.wrap))){
                if(o.fixPosition){
                    wrapXY = fly(dom).getXY();
                }
                var div = document.createElement("div");
                div.style.visibility = vis;
                wrap = dom.parentNode.insertBefore(div, dom);
                fly(wrap).setPositioning(pos);
                if(fly(wrap).isStyle(POSITION, "static")){
                    fly(wrap).position("relative");
                }
                fly(dom).clearPositioning('auto');
                fly(wrap).clip();
                wrap.appendChild(dom);
                if(wrapXY){
                    fly(wrap).setXY(wrapXY);
                }
            }
            return wrap;
        },

        /* @private */
        fxUnwrap : function(wrap, pos, o){
            var dom = this.dom;
            fly(dom).clearPositioning();
            fly(dom).setPositioning(pos);
            if(!o.wrap){
                var pn = fly(wrap).dom.parentNode;
                pn.insertBefore(dom, wrap);
                fly(wrap).remove();
            }
        },

        /* @private */
        getFxRestore : function(){
            var st = this.dom.style;
            return {pos: this.getPositioning(), width: st.width, height : st.height};
        },

        /* @private */
        afterFx : function(o){
            var dom = this.dom,
                id = dom.id;
            if(o.afterStyle){
                fly(dom).setStyle(o.afterStyle);
            }
            if(o.afterCls){
                fly(dom).addClass(o.afterCls);
            }
            if(o.remove == TRUE){
                fly(dom).remove();
            }
            if(o.callback){
                o.callback.call(o.scope, fly(dom));
            }
            if(!o.concurrent){
                getQueue(id).shift();
                fly(dom).nextFx();
            }
        },

        /* @private */
        fxanim : function(args, opt, animType, defaultDur, defaultEase, cb){
            animType = animType || 'run';
            opt = opt || {};
            var anim = Ext.lib.Anim[animType](
                    this.dom,
                    args,
                    (opt.duration || defaultDur) || .35,
                    (opt.easing || defaultEase) || EASEOUT,
                    cb,
                    this
                );
            opt.anim = anim;
            return anim;
        }
    };

    // backwards compat
    Ext.Fx.resize = Ext.Fx.scale;

    //When included, Ext.Fx is automatically applied to Element so that all basic
    //effects are available directly via the Element API
    Ext.Element.addMethods(Ext.Fx);
    })();