function onAfter(curr, next, opts) {
    var index = opts.currSlide;
    if(index == 0){
    	$('.prev').addClass('unselect');   
    }else{
        $('.prev').removeClass('unselect');
    }
    if(index == opts.slideCount - 1){
    	$('.next').addClass('unselect');  
    }else{
        $('.next').removeClass('unselect');
    }
}

$(document).ready(function(){
	$('#wrapper').addClass('enable');
	$('.next, .prev').css({visibility:'hidden',opacity:0});
	$('#demo').css({visibility:'hidden',opacity:0});
});

$(window).load(function(){
	$('.next, .prev').css({visibility:'visible'}).animate({opacity: 1});
	$('#demo').css({visibility:'visible'}).animate({opacity: 1}).cycle({
		timeout: 0,
		next: '.next',
		prev: '.prev',
		pause: 1,
		after: onAfter
	});
});