function calc(arrival_date_day, departure_date_day, room_num, arrival_date_month, departure_date_month, uid17, uid18) {
var room_num = arrival_date_day.options[room_num.selectedIndex].value;
var arrival_date_day = arrival_date_day.options[arrival_date_day.selectedIndex].value;
var departure_date_day = departure_date_day.options[departure_date_day.selectedIndex].value;
var arrival_date_month = arrival_date_month.options[arrival_date_month.selectedIndex].value;
var departure_date_month = departure_date_month.options[departure_date_month.selectedIndex].value;
var uid17 = uid17.options[uid17.selectedIndex].value;
alert (room_num);
var prise_tax = 2;

var minutes = 1000 * 60;
var hours = minutes * 60;
var days = hours * 24;


var arrival_date = Date.UTC(2008,arrival_date_day,arrival_date_day);
var departure_date = Date.UTC(2008,departure_date_month,departure_date_day);
var total = departure_date-arrival_date;
 total = total/days;

var rezult = total * eval(room_num) * prise_tax;
        var target_cell = document.getElementById('result');
            target_cell.innerHTML = '<b> ' + total + ' NIGHT(S): </b>'+ rezult + ',00 DKR';
         var prise_hiden = document.getElementById('prise');
            prise_hiden.value = '<b> ' + total + ' NIGHT(S): </b>'+ rezult + ',00 DKR';
}

function calcss() {
var persons = document.getElementById('room_num').options[document.getElementById('room_num').selectedIndex].value;
var bathroom = document.getElementById('bathroom').options[document.getElementById('bathroom').selectedIndex].value;
var apartmen = document.getElementById('apartmen').options[document.getElementById('apartmen').selectedIndex].value;

         var bathroom_hiden = document.getElementById('bathroom_hiden');
            bathroom_hiden.value = bathroom;
         var apartmen_hiden = document.getElementById('apartmen_hiden');
            apartmen_hiden.value = apartmen;

var minutes = 1000 * 60;
var hours = minutes * 60;
var days = hours * 24;

var year_begin = document.getElementById("year_begin").value;
var day_begin = document.getElementById("day_begin").value;
var month_begin = document.getElementById("month_begin").value;
var year_end = document.getElementById("year_end").value;
var month_end = document.getElementById("month_end").value;
var day_end = document.getElementById("day_end").value;

var rezulte_begin = document.getElementById("rezulte_begin").value;
var rezulte_end = document.getElementById("rezulte_end").value;
    set_date = new Date();

if (rezulte_begin == ""){
    document.getElementById("rezulte_begin").value = set_date.getDate() +"-"+ set_date.getMonth() +"-"+ set_date.getFullYear();
}
if (rezulte_end == ""){
    var day_th = set_date.getDate()+2;
    document.getElementById("rezulte_end").value = day_th +"-"+ set_date.getMonth() +"-"+ set_date.getFullYear();
}

if (day_begin=='' || year_begin=='' || month_begin=='') {
    day_begin = set_date.getDate()+1;
    month_begin = set_date.getMonth();
    year_begin= set_date.getFullYear();

};


if (day_end=='' || year_end=='' || month_end=='') {
    day_end = set_date.getDate()+2;
    month_end = set_date.getMonth();
    year_end= set_date.getFullYear();

}

var arrival_date = Date.UTC(year_begin,month_begin,day_begin);
var departure_date = Date.UTC(year_end,month_end,day_end);
var total = departure_date-arrival_date;
total = total/days;
 var rezult;
 switch(persons) {
case "1":

    if (bathroom=="private") {
     switch(apartmen) {
      case "single":
         rezult = total*495;
       break;
      case "large_double":
         rezult = total*725;
       break;
      case "double":
         rezult = total*675;
       break;
      case "3 roomed":
         rezult = total*1195;
       break;
       }
     }else {
      switch(apartmen) {
      case "single":
         rezult = total*395;
       break;
      case "double":
         rezult = total*575;
       break;
      case "triple room":
         rezult = total*795;
       break;
       }
     
    }
 break; 
 case "2":

    if (bathroom=="private") {
     switch(apartmen) {
      case "large_double":
         rezult = total*725;
       break;
      case "double":
         rezult = total*675;
       break;
      case "3 roomed":
         rezult = total*1195;
       break;
       }
     }else {
      switch(apartmen) {
      case "double":
         rezult = total*575;
       break;
      case "triple room":
         rezult = total*795;
       break;
       }
     
    }
 break; 
  case "3":

    if (bathroom=="private") {
     switch(apartmen) {
      case "3 roomed":
         rezult = total*1195;
       break;
       }
       
     }else {
      switch(apartmen) {
      case "triple room":
         rezult = total*795;
       break;
      case "twin room":
         rezult = total*595;
       break;
       }
    }
 break;
   case "4":

    if (bathroom=="private") {
     switch(apartmen) {
      case "3 roomed":
         rezult = total*1195;
       break;
       }
    }
 break;  
    case "5":

    if (bathroom=="private") {
     switch(apartmen) {
      case "3 roomed":
         rezult = total*1395;
       break;
       }
    }
 break; 
}
  

//var rezult = total * prise_tax + apartmen + bathroom;
    if (rezult < 0) {
    write_rezult = '<b>Error</b>';
    } else {
    write_rezult = '<b> ' + total + ' NIGHT(S): </b>'+ rezult + ',00 DKR';
    }
        var target_cell = document.getElementById('result');
            target_cell.innerHTML = write_rezult;
         var prise_hiden = document.getElementById('prise');
            prise_hiden.value = write_rezult;
            

            
}

function rebildSelect() {
var persons = document.getElementById('room_num').options[document.getElementById('room_num').selectedIndex].value;
//alert (persons);
  var bathroom = document.getElementById('bathroom');
 var apartmen = document.getElementById('apartmen');
 
switch(persons) {
case "1":

  bathroom.options.length = 0;
    apartmen.options.length = 0;
 bathroom.options[0] = new Option('shared', 'shared');
  bathroom.options[1] = new Option('private', 'private');
  apartmen.options[0] =new Option('single', 'single');
    apartmen.options[1] =new Option('large double', 'large_double');
      apartmen.options[2] =new Option('double', 'double');
        apartmen.options[3] =new Option('triple room', 'triple room');
          apartmen.options[4] =new Option('3 roomed', '3 roomed');

  break;    
case "2":

  bathroom.options.length = 0;
    apartmen.options.length = 0;
 bathroom.options[0] = new Option('shared', 'shared');
  bathroom.options[1] = new Option('private', 'private');
    apartmen.options[0] =new Option('large double', 'large_double');
      apartmen.options[1] =new Option('double', 'double');
        apartmen.options[2] =new Option('triple room', 'triple room');
          apartmen.options[3] =new Option('3 roomed', '3 roomed');
bathSelect();
  break;
  case "3":
  
  bathroom.options.length = 0;
    apartmen.options.length = 0;
 bathroom.options[0] = new Option('shared', 'shared');
  bathroom.options[1] = new Option('private', 'private');
        apartmen.options[0] =new Option('triple room', 'triple room');
          apartmen.options[1] =new Option('3 roomed', '3 roomed');

  break;
  case "4":
  bathroom.options.length = 0;
    apartmen.options.length = 0;
  bathroom.options[0] = new Option('private', 'private');
          apartmen.options[0] =new Option('3 roomed', '3 roomed');
  break;
    case "5":
      bathroom.options.length = 0;
    apartmen.options.length = 0;
  bathroom.options[0] = new Option('private', 'private');
          apartmen.options[0] =new Option('3 roomed', '3 roomed');
  break;
}
}
function bathSelect(){
var persons = document.getElementById('room_num').options[document.getElementById('room_num').selectedIndex].value;
var bathroom = document.getElementById('bathroom').options[document.getElementById('bathroom').selectedIndex].value;
var apartmen = document.getElementById('apartmen');

switch(persons) {
case "1":

        apartmen.options.length = 0;
	if (bathroom =="private") {
	  apartmen.options[0] =new Option('single', 'single');
          apartmen.options[1] =new Option('large double', 'large_double');
          apartmen.options[2] =new Option('double', 'double');
          apartmen.options[3] =new Option('3 roomed', '3 roomed');
        }
	if (bathroom =="shared") {
	  apartmen.options[0] =new Option('single', 'single');
          apartmen.options[1] =new Option('double', 'double');
          apartmen.options[2] =new Option('triple room', 'triple room');
        }

    
  break;    
case "2":
        apartmen.options.length = 0;
	if (bathroom =="private") {
          apartmen.options[0] =new Option('large double', 'large_double');
          apartmen.options[1] =new Option('double', 'double');
          apartmen.options[2] =new Option('3 roomed', '3 roomed');
        }
	if (bathroom =="shared") {
          apartmen.options[0] =new Option('double', 'double');
          apartmen.options[1] =new Option('triple room', 'triple room');
        }

  break;
  case "3":
        apartmen.options.length = 0;
	if (bathroom =="private") {
          apartmen.options[0] =new Option('3 roomed', '3 roomed');
        }
	if (bathroom =="shared") {
          apartmen.options[0] =new Option('triple room', 'triple room');
          apartmen.options[1] =new Option('twin room', 'twin room');
        }

  break;
}

}