(function($) {
$.effects.pulsate = function(o) {
	return this.queue(function() {
		var el = $(this);
		var mode = $.effects.setMode(el, o.options.mode || 'show');
		var times = o.options.times || 5;
		var duration = o.duration ? o.duration / 2 : $.fx.speeds._default / 2;

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

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