var idate = new Date();
var iyear = idate.getFullYear();
var imonth = idate.getMonth();
var iday = idate.getDate();
var dateStr1 = iyear + "-" + (imonth+1) + "-" + iday;
var idate2 = new Date(iyear,imonth,iday+1);
var iyear2 = idate2.getFullYear();
var imonth2 = idate2.getMonth();
var iday2 = idate2.getDate();
var dateStr2 = iyear2 + "-" + (imonth2+1) + "-" + iday2;

function AddDay(k){
var obj = new Date();
var obj2 = new Date(obj.getFullYear(),obj.getMonth(),obj.getDate()+k)
y = obj2.getFullYear();
m = obj2.getMonth();
d = obj2.getDate();
ds = y + "-" + (m+1) + "-" + d;
return ds;
}