function calc_days(start){
  var stime = start.getTime()
  var days = stime + (60*60*24*3*1000)
  return new Date (days)
}

function check_form(){
       if (reservation.dayin.value && reservation.monthin.value && reservation.yearin.value){
                reservation.datein.value = reservation.dayin.value + "." + reservation.monthin.value + "." + reservation.yearin.value;
                if(reservation.dayin.value<10){mysqldayin="0"+reservation.dayin.value;}else{mysqldayin=reservation.dayin.value;}
                if(reservation.monthin.value<10){mysqlmonthin="0"+reservation.monthin.value;}else{mysqlmonthin=reservation.monthin.value;}
                reservation.mysqldatein.value = reservation.yearin.value + "-" + mysqlmonthin + "-" + mysqldayin;

        }
        if (reservation.dayout.value && reservation.monthout.value && reservation.yearout.value){
                reservation.dateout.value = reservation.dayout.value + "." + reservation.monthout.value + "." + reservation.yearout.value;
                if(reservation.dayout.value<10){mysqldayout="0"+reservation.dayout.value;}else{mysqldayout=reservation.dayout.value;}
                if(reservation.monthout.value<10){mysqlmonthout="0"+reservation.monthout.value;}else{mysqlmonthout=reservation.monthout.value;}
                reservation.mysqldateout.value = reservation.yearout.value + "-" + mysqlmonthout + "-" + mysqldayout;
        }


// Проверка наличия дат

        if (!reservation.dayin.value || !reservation.monthin.value || !reservation.yearin.value){
                alert("Укажите дату заезда!");
                return false;
        }

        if (!reservation.dayout.value || !reservation.monthout.value || !reservation.yearout.value){
                alert("Укажите дату выезда!");
                return false;
        }

// Чтобы дата заезда была больше или равна текущей дате

        dayin = parseInt(reservation.dayin.value);
        monthin = parseInt(reservation.monthin.value) - 1;
        yearin = parseInt(reservation.yearin.value);
        datein = new Date (yearin, monthin, dayin, 0, 0, 0);
        now = new Date;
        now2 = new Date (now.getFullYear(), now.getMonth(), now.getDate(), 0, 0, 0);
        //document.write(calc_3days());
        if (datein.getTime() < calc_days(now2)){
                alert("On-line бронирование возможно не ранее трёх суток до дня заезда.\n Попробуйте позвонить администратору.");
                return false;
        }

// Чтобы дата заезд была меньше даты выезда
        dayout = reservation.dayout.value;
        monthout = parseInt(reservation.monthout.value) - 1;
        yearout = reservation.yearout.value;
        dateout = new Date (yearout, monthout, dayout, 0, 0, 0);
        if (dateout.getTime() <= datein.getTime()){
                alert("Не правильно указана дата выезда. Дата выезда должна быть больше даты заезда!");
                return false;
        }

// Проверка количества мест
        if ((parseInt(reservation.sn.value) + parseInt(reservation.db.value) + parseInt(reservation.tr.value)) == 0){
                alert("Количество номеров должно быть больше нуля!");
                return false;
        }
        return true;
}

//-------------------------------------------------------

function re_date(){
        if (reservation.dayin.value && reservation.monthin.value && reservation.yearin.value){
                dayin = reservation.dayin.value;
                monthin = parseInt(reservation.monthin.value) - 1;
                yearin = reservation.yearin.value;
                newdate = new Date (yearin, monthin, dayin);
                now = new Date;
                hours_now = now.getHours();

                var datein_plus = 0;
                newdate.setDate(newdate.getDate() + datein_plus);
                reservation.dayin.value = newdate.getDate();
                reservation.monthin.value = newdate.getMonth() + 1;
                reservation.yearin.value = newdate.getFullYear();

                newdate.setDate(newdate.getDate() + 1);
                reservation.dayout.value = newdate.getDate();
                reservation.monthout.value = newdate.getMonth() + 1;
                reservation.yearout.value = newdate.getFullYear();

                reservation.dateout.value = reservation.dayout.value + "." + reservation.monthout.value + "." + reservation.yearout.value;
                reservation.datein.value = reservation.dayin.value + "." + reservation.monthin.value + "." + reservation.yearin.value;



        if (reservation.dayin.value && reservation.monthin.value && reservation.yearin.value){
                reservation.datein.value = reservation.dayin.value + "." + reservation.monthin.value + "." + reservation.yearin.value;
                if(reservation.dayin.value<10){mysqldayin="0"+reservation.dayin.value;}else{mysqldayin=reservation.dayin.value;}
                if(reservation.monthin.value<10){mysqlmonthin="0"+reservation.monthin.value;}else{mysqlmonthin=reservation.monthin.value;}
                reservation.mysqldatein.value = reservation.yearin.value + "-" + mysqlmonthin + "-" + mysqldayin;

        }
        if (reservation.dayout.value && reservation.monthout.value && reservation.yearout.value){
                reservation.dateout.value = reservation.dayout.value + "." + reservation.monthout.value + "." + reservation.yearout.value;
                if(reservation.dayout.value<10){mysqldayout="0"+reservation.dayout.value;}else{mysqldayout=reservation.dayout.value;}
                if(reservation.monthout.value<10){mysqlmonthout="0"+reservation.monthout.value;}else{mysqlmonthout=reservation.monthout.value;}
                reservation.mysqldateout.value = reservation.yearout.value + "-" + mysqlmonthout + "-" + mysqldayout;
        }
        }
}

//-------------------------------------------------------

function re_date_adm(){
        if (reservation.dayin.value && reservation.monthin.value && reservation.yearin.value){
                dayin = reservation.dayin.value;
                monthin = parseInt(reservation.monthin.value) - 1;
                yearin = reservation.yearin.value;
                newdate = new Date (yearin, monthin, dayin);
                now = new Date;
                hours_now = now.getHours();

                var datein_plus = 0;
                newdate.setDate(newdate.getDate() + datein_plus);
                reservation.dayin.value = newdate.getDate();
                reservation.monthin.value = newdate.getMonth() + 1;
                reservation.yearin.value = newdate.getFullYear();

                newdate.setDate(newdate.getDate() + 1);
                reservation.dayout.value = newdate.getDate();
                reservation.monthout.value = newdate.getMonth() + 1;
                reservation.yearout.value = newdate.getFullYear();

                reservation.dateout.value = reservation.dayout.value + "." + reservation.monthout.value + "." + reservation.yearout.value;
                reservation.datein.value = reservation.dayin.value + "." + reservation.monthin.value + "." + reservation.yearin.value;
        }
        if (reservation.dayin.value && reservation.monthin.value && reservation.yearin.value){
                reservation.datein.value = reservation.dayin.value + "." + reservation.monthin.value + "." + reservation.yearin.value;
                if(reservation.dayin.value<10){mysqldayin="0"+reservation.dayin.value;}else{mysqldayin=reservation.dayin.value;}
                if(reservation.monthin.value<10){mysqlmonthin="0"+reservation.monthin.value;}else{mysqlmonthin=reservation.monthin.value;}
                reservation.mysqldatein.value = reservation.yearin.value + "-" + mysqlmonthin + "-" + mysqldayin;

        }
        if (reservation.dayout.value && reservation.monthout.value && reservation.yearout.value){
                reservation.dateout.value = reservation.dayout.value + "." + reservation.monthout.value + "." + reservation.yearout.value;
                if(reservation.dayout.value<10){mysqldayout="0"+reservation.dayout.value;}else{mysqldayout=reservation.dayout.value;}
                if(reservation.monthout.value<10){mysqlmonthout="0"+reservation.monthout.value;}else{mysqlmonthout=reservation.monthout.value;}
                reservation.mysqldateout.value = reservation.yearout.value + "-" + mysqlmonthout + "-" + mysqldayout;
        }

}


//-------------------------------------------------------

function mysqldate_adm(){

        if (reservation.dayin.value && reservation.monthin.value && reservation.yearin.value){
                reservation.datein.value = reservation.dayin.value + "." + reservation.monthin.value + "." + reservation.yearin.value;
                if(reservation.dayin.value<10){mysqldayin="0"+reservation.dayin.value;}else{mysqldayin=reservation.dayin.value;}
                if(reservation.monthin.value<10){mysqlmonthin="0"+reservation.monthin.value;}else{mysqlmonthin=reservation.monthin.value;}
                reservation.mysqldatein.value = reservation.yearin.value + "-" + mysqlmonthin + "-" + mysqldayin;

        }
        if (reservation.dayout.value && reservation.monthout.value && reservation.yearout.value){
                reservation.dateout.value = reservation.dayout.value + "." + reservation.monthout.value + "." + reservation.yearout.value;
                if(reservation.dayout.value<10){mysqldayout="0"+reservation.dayout.value;}else{mysqldayout=reservation.dayout.value;}
                if(reservation.monthout.value<10){mysqlmonthout="0"+reservation.monthout.value;}else{mysqlmonthout=reservation.monthout.value;}
                reservation.mysqldateout.value = reservation.yearout.value + "-" + mysqlmonthout + "-" + mysqldayout;
        }

}