var today=new Date(); 
   var  yearStr=today.getYear()+"";
    var strMonth=today.getMonth()+1;
   var hours=today.getHours();
   strMonth=strMonth+"";
   if(strMonth.length==1)
	strMonth="0"+strMonth;
   strDay=today.getDate();
   
   strDay=strDay+"";
   if(strDay.length==1)
      strDay="0"+strDay;
   
   var strDate=yearStr+"-"+strMonth+"-"+strDay;//现在时间

    var day1 = 24 * 60 * 60 * 1000;
    now   = new Date();
    now.setTime(now.getTime() + day1);
    strDay=now.getDate();
    strMonth=now.getMonth()+1;
    strMonth=strMonth+"";
   if(strMonth.length==1)
	strMonth="0"+strMonth;
	  strDay=strDay+"";
   if(strDay.length==1)
      strDay="0"+strDay;
   
   var strDate1=yearStr+"-"+strMonth+"-"+strDay;//后一天
	
	var day2 = 2*24 * 60 * 60 * 1000;
    now1   = new Date();
    now1.setTime(now1.getTime()+day2);
    strDay1=now1.getDate();
    strMonth1=now1.getMonth()+1;
    strMonth1=strMonth1+"";
   if(strMonth1.length==1)
	strMonth1="0"+strMonth1;
	  strDay1=strDay1+"";
   if(strDay1.length==1)
      strDay1="0"+strDay1;
   
   var strDate2=yearStr+"-"+strMonth1+"-"+strDay1;//后两天