解决方法
你可以用CSS来做到这一点.所有你需要的是一些div与窗口相同的高度,不同的背景图像与属性background-attachment：固定.
#one
{
background: url(http://images.buzzillions.com/images_products/07/02/iron-horse-maverick-elite-mountain-bike-performance-exclusive_13526_100.jpg);
background-repeat: no-repeat;
background-position: center center;
background-attachment:fixed;
}
#two
{
background: url(http://img01.static-nextag.com/image/GMC-Denali-Road-Bike/1/000/006/107/006/610700673.jpg);
background-repeat: no-repeat;
background-position: center center;
background-attachment:fixed;
}
