var skroll = new Fx.ScrollWindow({duration: 3000, wait: true, transition: Fx.Transitions.sineInOut});

	$('scroll_btn').addEvent('click', function(){
		skroll.toElement('work1');
	});
	
	// Part 1 
	$('next_btn1').addEvent('click', function(){
		skroll.toElement('work2');
	});
	
	$('top_btn1').addEvent('click', function(){
		skroll.toElement('top');
	});
	
	// Part 2
	$('next_btn2').addEvent('click', function(){
		skroll.toElement('work3');
	});
	
	$('prev_btn2').addEvent('click', function(){
		skroll.toElement('work1');
	});
	
	$('top_btn2').addEvent('click', function(){
		skroll.toElement('top');
	});
	
	
	// Part 3
	
	$('prev_btn3').addEvent('click', function(){
		skroll.toElement('work2');
	});
	
	$('top_btn3').addEvent('click', function(){
		skroll.toElement('top');
	});
	
	// Part 4
		$('next_btn4').addEvent('click', function(){
		skroll.toElement('work2');
	});