团购倒计时

$(function(){

    var endtime=new Date("2011/3/16 16:53:00");// 结束日期
    var thisTime=new Date($("#hftime").val());// 当前服务器时间
    
    var nowtime =thisTime.getTime();// 服务器当前时间总的秒数
    var leftsecond=0;
    var sh;
    
    // 倒计时
    function _fresh()
    {
        nowtime=nowtime+1000;//间隔1秒，毫秒加1000
        leftsecond=parseInt((endtime.getTime()-nowtime)/1000);
        __d=parseInt(leftsecond/3600/24)<=9?+"0"+parseInt(leftsecond/3600/24).toString():parseInt(leftsecond/3600/24);
        __h=parseInt((leftsecond/3600)%24)<=9?+"0"+parseInt((leftsecond/3600)%24).toString():parseInt((leftsecond/3600)%24);
        __m=parseInt((leftsecond/60)%60)<=9?+"0"+parseInt((leftsecond/60)%60).toString():parseInt((leftsecond/60)%60);
        __s=parseInt(leftsecond%60)<=9?+"0"+parseInt(leftsecond%60).toString():parseInt(leftsecond%60);
        
        $(".daojis span").html(""+__d+"天"+__h+"时"+__m+"分"+__s+"秒");
        
        if(leftsecond<=0){
            $(".daojis span").html("特价已结束");
            clearInterval(sh);
        }
    }
    _fresh()
    sh=setInterval(_fresh,1000);//
    
});//结束