performance-art.fr/sites/all/modules/gui/jqplug/js/ui/effects.pulsate.js

/*
 * jQuery UI Effects Pulsate 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/Pulsate
 *
 * Depends:
 *	effects.core.js
 */
(function($) {

$.effects.pulsate = function(o) {

	return this.queue(function() {

		// Create element
		var el = $(this);

		// Set options
		var mode = $.effects.setMode(el, o.options.mode || 'show'); // Set Mode
		var times = o.options.times || 5; // Default # of times
		var duration = o.duration ? o.duration / 2 : $.fx.speeds._default / 2;

		// Adjust
		if (mode == 'hide') times--;
		if (el.is(':hidden')) { // Show fadeIn
			el.css('opacity', 0);
			el.show(); // Show
			el.animate({opacity: 1}, duration, o.options.easing);
			times = times-2;
		}

		// Animate
		for (var i = 0; i < times; i++) { // Pulsate
			el.animate({opacity: 0}, duration, o.options.easing).animate({opacity: 1}, duration, o.options.easing);
		};
		if (mode == 'hide') { // Last Pulse
			el.animate({opacity: 0}, duration, o.options.easing, function(){
				el.hide(); // Hide
				if(o.callback) o.callback.apply(this, arguments); // Callback
			});
		} else {
			el.animate({opacity: 0}, duration, o.options.easing).animate({opacity: 1}, duration, o.options.easing, function(){
				if(o.callback) o.callback.apply(this, arguments); // Callback
			});
		};
		el.queue('fx', function() { el.dequeue(); });
		el.dequeue();
	});

};

})(jQuery);