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/*!

 * jQuery UI Effects Shake 1.10.2

 * http://jqueryui.com

 *

 * Copyright 2013 jQuery Foundation and other contributors

 * Released under the MIT license.

 * http://jquery.org/license

 *

 * http://api.jqueryui.com/shake-effect/

 *

 * Depends:

 *        jquery.ui.effect.js

 */

(function( $, undefined ) {

$.effects.effect.shake = function( o, done ) {

        var el = $( this ),

                props = [ "position", "top", "bottom", "left", "right", "height", "width" ],

                mode = $.effects.setMode( el, o.mode || "effect" ),

                direction = o.direction || "left",

                distance = o.distance || 20,

                times = o.times || 3,

                anims = times * 2 + 1,

                speed = Math.round(o.duration/anims),

                ref = (direction === "up" || direction === "down") ? "top" : "left",

                positiveMotion = (direction === "up" || direction === "left"),

                animation = {},

                animation1 = {},

                animation2 = {},

                i,

                // we will need to re-assemble the queue to stack our animations in place

                queue = el.queue(),

                queuelen = queue.length;

        $.effects.save( el, props );

        el.show();

        $.effects.createWrapper( el );

        // Animation

        animation[ ref ] = ( positiveMotion ? "-=" : "+=" ) + distance;

        animation1[ ref ] = ( positiveMotion ? "+=" : "-=" ) + distance * 2;

        animation2[ ref ] = ( positiveMotion ? "-=" : "+=" ) + distance * 2;

        // Animate

        el.animate( animation, speed, o.easing );

        // Shakes

        for ( i = 1; i < times; i++ ) {

                el.animate( animation1, speed, o.easing ).animate( animation2, speed, o.easing );

        }

        el

                .animate( animation1, speed, o.easing )

                .animate( animation, speed / 2, o.easing )

                .queue(function() {

                        if ( mode === "hide" ) {

                                el.hide();

                        }

                        $.effects.restore( el, props );

                        $.effects.removeWrapper( el );

                        done();

                });

        // inject all the animations we just queued to be first in line (after "inprogress")

        if ( queuelen > 1) {

                queue.splice.apply( queue,

                        [ 1, 0 ].concat( queue.splice( queuelen, anims + 1 ) ) );

        }

        el.dequeue();

};

})(jQuery);