/*
* jQuery UI Effects Shake 1.7.2
*
* Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT (MIT-LICENSE.txt)
* and GPL (GPL-LICENSE.txt) licenses.
*
* http://docs.jquery.com/UI/Effects/Shake
*
* Depends:
*	effects.core.js
*/
(function($) {

    $.effects.shake = function(o) {

        return this.queue(function() {

            // Create element
            var el = $(this), props = ['position', 'top', 'left'];

            // Set options
            var mode = $.effects.setMode(el, o.options.mode || 'effect'); // Set Mode
            var direction = o.options.direction || 'left'; // Default direction
            var distance = o.options.distance || 20; // Default distance
            var times = o.options.times || 3; // Default # of times
            var speed = o.duration || o.options.duration || 140; // Default speed per shake

            // Adjust
            $.effects.save(el, props); el.show(); // Save & Show
            $.effects.createWrapper(el); // Create Wrapper
            var ref = (direction == 'up' || direction == 'down') ? 'top' : 'left';
            var motion = (direction == 'up' || direction == 'left') ? 'pos' : 'neg';

            // Animation
            var animation = {}, animation1 = {}, animation2 = {};
            animation[ref] = (motion == 'pos' ? '-=' : '+=') + distance;
            animation1[ref] = (motion == 'pos' ? '+=' : '-=') + distance * 2;
            animation2[ref] = (motion == 'pos' ? '-=' : '+=') + distance * 2;

            // Animate
            el.animate(animation, speed, o.options.easing);
            for (var i = 1; i < times; i++) { // Shakes
                el.animate(animation1, speed, o.options.easing).animate(animation2, speed, o.options.easing);
            };
            el.animate(animation1, speed, o.options.easing).
		animate(animation, speed / 2, o.options.easing, function() { // Last shake
		    $.effects.restore(el, props); $.effects.removeWrapper(el); // Restore
		    if (o.callback) o.callback.apply(this, arguments); // Callback
		});
            el.queue('fx', function() { el.dequeue(); });
            el.dequeue();
        });

    };

})(jQuery);