/*

 * jQuery UI Effects Pulsate 1.8.1

 *

 * Copyright (c) 2010 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/Pulsate

 *

 * Depends:

 *	jquery.effects.core.js

 */

(function($) {

$.effects.pulsate = function(o) {

	return this.queue(function() {

		var elem = $(this),

			mode = $.effects.setMode(elem, o.options.mode || 'show');

			times = ((o.options.times || 5) * 2) - 1;

			duration = o.duration ? o.duration / 2 : $.fx.speeds._default / 2,

			isVisible = elem.is(':visible'),

			animateTo = 0;

		if (!isVisible) {

			elem.css('opacity', 0).show();

			animateTo = 1;

		}

		if ((mode == 'hide' && isVisible) || (mode == 'show' && !isVisible)) {

			times--;

		}

		for (var i = 0; i < times; i++) {

			elem.animate({ opacity: animateTo }, duration, o.options.easing);

			animateTo = (animateTo + 1) % 2;

		}

		elem.animate({ opacity: animateTo }, duration, o.options.easing, function() {

			if (animateTo == 0) {

				elem.hide();

			}

			(o.callback && o.callback.apply(this, arguments));

		});

		elem

			.queue('fx', function() { elem.dequeue(); })

			.dequeue();

	});

};

})(jQuery);