用法1 - 单向滑动
var scroller1 = new NiceScroller('#scroller1')用法2 - 双向滑动
var scroller2 = new NiceScroller('#scroller2')用法3 - 嵌套
var scroller3 = new NiceScroller('#scroller3')
var scroller4 = new NiceScroller('#scroller4')var scroller1 = new NiceScroller('#scroller1')var scroller2 = new NiceScroller('#scroller2')
var scroller3 = new NiceScroller('#scroller3')
var scroller4 = new NiceScroller('#scroller4')