function countDate(_start, _end, _this)
{
    var now = new Date();
    var time = now.getTime();
    var now_sec = Math.floor(time/1000);//獲得當(dāng)前的秒級(jí)時(shí)間戳
    if(now_sec < _start){
        var leftsecond = _start - now_sec; //計(jì)算時(shí)間戳差值
        var day=Math.floor(leftsecond/(3600*24))
        var hour=Math.floor((leftsecond-day*3600*24)/3600);
        var minute=Math.floor((leftsecond-day*3600*24-hour*3600)/60);
        var second=Math.floor(leftsecond-day*3600*24-hour*3600-minute*60);
        var dateHtml = '即將開(kāi)始：<b>'+day+'天'+hour+'小時(shí)'+minute+'分'+second+'秒</b>，快叫上好友一起來(lái)?yè)屬?gòu)吧~';
    }else if(_start <= now_sec && now_sec < _end){
        var leftsecond = _end - now_sec; //計(jì)算時(shí)間戳差值
        var day=Math.floor(leftsecond/(3600*24))
        var hour=Math.floor((leftsecond-day*3600*24)/3600);
        var minute=Math.floor((leftsecond-day*3600*24-hour*3600)/60);
        var second=Math.floor(leftsecond-day*3600*24-hour*3600-minute*60);
        var dateHtml = '剩余：<b>'+day+'天'+hour+'小時(shí)'+minute+'分'+second+'秒</b>，抓住機(jī)會(huì)來(lái)?yè)屬?gòu)吧~';
    }else if(_end <= now_sec){
        var dateHtml = '已結(jié)束'
    }
    _this.html(dateHtml);
}