<script>       
function jsDateDiff(publishTime){       
    var d_minutes,d_hours,d_days;       
    var timeNow = parseInt(new Date().getTime()/1000);       
    var d;       
    d = timeNow - publishTime;       
    d_days = parseInt(d/86400);       
    d_hours = parseInt(d/3600);       
    d_minutes = parseInt(d/60);       
    if(d_days>0 && d_days<4){       
        return d_days+"天前";       
    }else if(d_days<=0 && d_hours>0){       
        return d_hours+"小时前";       
    }else if(d_hours<=0 && d_minutes>0){       
        return d_minutes+"分钟前";       
    }else{       
        var s = new Date(publishTime*1000);       
        // s.getFullYear()+"年";
        return (s.getMonth()+1)+"月"+s.getDate()+"日";       
    }       
}       
</script>