function writemess(x) {
 
var single=62;
var two=56;
var week=54;
var hsingle=58;
var htwo=52;
var hweek=50;

switch (x){
case 0:
var cost = new Array();

cost[0] = 200;
cost[1] = single;
cost[2] = two * 2;
cost[3] = two * 3;
cost[4] = two * 4;
cost[5] = two * 5;
cost[6] = two * 6;
cost[7] = week * 7;

var msg = new Array(12);

msg[0] = ("2 nights B&B only £" + cost[2] + " per room");
msg[1] = ("3 nights B&B only £" + cost[3] + " per room");
msg[2] = ("4 nights B&B only £" + cost[4] + " per room");
msg[3] = ("5 nights B&B only £" + cost[5] + " per room");
msg[4] = ("6 nights B&B only £" + cost[6] + " per room");
msg[5] = ("1 weeks B&B only £" + cost[7] + " per room");
msg[6] = ("3 nights B&B only £" + cost[3] + " per room");
msg[7] = ("1 weeks B&B only £" + cost[7] + " per room");
msg[8] = ("3 nights B&B only £" + cost[3] + " per room");
msg[9] = "Single occupancy discounts";
msg[10] = "No extra charge for credit/debit cards";

var num = Math.random()*10;
var num = Math.round(num);

document.write(msg[num]);

break;

case 1:

document.write("£"+ single +".00");
break;


case 2:

document.write("£"+two+".00");
break;

case 3:

document.write("£"+week+".00");
break;

case 4:

document.write("£"+hsingle+".00");
break;

case 5:

document.write("£"+htwo+".00");
break;

case 6:

document.write("£"+hweek+".00");
break;

case 7:

document.write ("Look out for the many summer events and festivals");
break;

}}

function calculate() {

var one=62;
var two=56;
var week=54;
var singleocc=35;
var htwo=52;
var hweek=50;

var room = (document.getElementById("occ").value);
var nights = (document.getElementById("nights").value);

var cost= (document.getElementById("cost").value);
var c=0;


switch (room) {

case "double":

if (nights > 6) { 
                  c=nights*week;
                   document.getElementById("cost").value=("£"+ c +".00");
                }   
else if (nights == 1) {
                      document.getElementById("cost").value=("£"+ one +".00");
                     }
else {
      c=nights*two;
      document.getElementById("cost").value=("£"+ c +".00");
     }    

break;

case "twin":
if (nights > 6) { 
                 c=nights*week;
                 document.getElementById("cost").value=("£"+ c +".00");
                }
else if (nights == 1) {
                      document.getElementById("cost").value=("£"+ one +".00");
                     }
else {
       c=nights*two;
       document.getElementById("cost").value=("£"+ c +".00");
     }
break;
case "single":
c=nights*singleocc;
       document.getElementById("cost").value=("£"+ c +".00");  
break;

default:
document.write ("The Total cost is 2300"+month+nights);

}}