window.addEvent('domready', function(){
			var box = $('box');
			var fx = box.effects({duration: 2000, transition: Fx.Transitions.Back.easeOut});
			var myFx = new Fx.Style('box', 'opacity').set(0); 
			
			
			
			$('start').addEvent('click', function() {
				fx.start({
					'opacity': 1
				}).chain(function(){
					this.start({
						'opacity': 0
					});
				}).chain(function(){
					this.start({
						'opacity': 1
					});
				}).chain(function() {
					this.start({
						'opacity': 0
					});
				}).chain(function() {
					this.start({
						'opacity': 1
					});
				}).chain(function() {
					this.start({
						'opacity': 0
					});							
				}).chain(function() {
					this.start({
						'opacity': 1
					});					
				});
			});
		}); 
		
		window.addEvent('load', function() {
				
				var box = $('box');
				var fx = box.effects({duration: 2000, transition: Fx.Transitions.Back.easeOut});
				var myFx = new Fx.Style('box', 'opacity').set(0); 
		
				fx.start({
					'opacity': 0
				}).chain(function(){
					this.start({
						'opacity': 1
					});
				}).chain(function(){
					this.start({
						'opacity': 0
					});
				}).chain(function() {
					this.start({
						'opacity': 1
					});
				}).chain(function() {
					this.start({
						'opacity': 0
					});
				}).chain(function() {
					this.start({
						'opacity': 1
					});
				});
		});