毫秒转时分秒

function millisecond2Date(msd) {
    var time = parseFloat(msd) / 1000;
    if (null != time && "" != time) {
        if(time <= 60) {
            time = time + "秒";
        }else if (time > 60 && time < 60 * 60) {
            time = parseInt(time / 60.0) + "分钟" + parseInt((parseFloat(time / 60.0) - parseInt(time / 60.0)) * 60) + "秒";
        } else if (time >= 60 * 60 && time < 60 * 60 * 24) {
            time = parseInt(time / 3600.0) + "小时" + parseInt((parseFloat(time / 3600.0) -
                parseInt(time / 3600.0)) * 60) + "分钟";
        } else {
            time = parseInt(time/3600.0*24) + "天" + parseInt((parseFloat(time / 3600.0*24) -
                parseInt(time / 3600.0*24)) * 24) + "小时";
        }
    }
    return time;
}