var myScroll, pullUpEl, pullUpOffset;
/**
 * 初始化iScroll控件
 */
function loaded() {

    pullUpEl = document.getElementById('pullUp');
    pullUpOffset = pullUpEl.offsetHeight;

    myScroll = new iScroll('wrapper', {
        scrollbarClass: 'myScrollbar', /* 重要样式 */
        scrollbars: true,
        mouseWheel: true,//允许滑轮滚动
        useTransition: false, /* 此属性不知用意，本人从true改为false 动画 */
        onRefresh: function () {
            if (pullUpEl.className.match('loading')) {
                pullUpEl.className = '';
                pullUpEl.querySelector('.pullUpLabel').innerHTML = '上拉加载更多...';
            }
        },
        onScrollMove: function () {
            if (this.y < (this.maxScrollY - 55) && !pullUpEl.className.match('flip')) {
                pullUpEl.className = 'flip';
                pullUpEl.querySelector('.pullUpLabel').innerHTML = '松手开始更新...';
                this.maxScrollY = this.maxScrollY;
            } else if (this.y > (this.maxScrollY + 55) && pullUpEl.className.match('flip')) {
                pullUpEl.className = '';
                pullUpEl.querySelector('.pullUpLabel').innerHTML = '上拉加载更多...';
                this.maxScrollY = pullUpOffset;
            }
        },
        onScrollEnd: function () {
            if (pullUpEl.className.match('flip')) {
                pullUpEl.className = 'loading';
                pullUpEl.querySelector('.pullUpLabel').innerHTML = '正在加载...';
//                        pullUpAction();	// Execute custom function (ajax call?)
            }
        }
    });

    setTimeout(function () { document.getElementById('wrapper').style.left = '0'; }, 800);
}

//初始化绑定iScroll控件
document.addEventListener('touchmove', function (e) { e.preventDefault(); }, false);
document.addEventListener('DOMContentLoaded', loaded, false);