window.addEvent('domready', function(){

	var currentCol = 0;
	var folioChange = new Fx.Tween('folio', {duration:1000});
	var columns = $$('div.col');

	$('prev').addEvent('click', function(){
		if(currentCol>0){
			currentCol -= 1;
			var x = (currentCol*-360);
			folioChange.start('left',x);
		}
	});

	$('next').addEvent('click', function(){
		if(currentCol<columns.length-1){
			currentCol += 1;
			var x = (currentCol*-360);
			folioChange.start('left',x);
		}
	});
	
	

});