function calculate(){

tuesdaydinner = 0;
tuesdaybedroom = 0;
fullconference = 0;
wednesday = 0;
thursday = 0;
friday = 0;
conferencedinner = 0;


if(document.bookingform.tuesdaydinner.checked == true) {
var tuesdaydinner = 22;
}

if(document.bookingform.tuesdaybedroom.checked == true) {
var tuesdaybedroom = 70;
}


for (var i=0; i < document.bookingform.fullconference.length; i++) {
	if (document.bookingform.fullconference[i].checked)
    {
      var fullconference = Number(document.bookingform.fullconference[i].value);
    }
}

for (var i=0; i < document.bookingform.wednesday.length; i++) {
	if (document.bookingform.wednesday[i].checked)
    {
      var wednesday = Number(document.bookingform.wednesday[i].value);
    }
}

for (var i=0; i < document.bookingform.thursday.length; i++) {
	if (document.bookingform.thursday[i].checked)
    {
      var thursday = Number(document.bookingform.thursday[i].value);
    }
}

for (var i=0; i < document.bookingform.friday.length; i++) {
	if (document.bookingform.friday[i].checked)
    {
      var friday = Number(document.bookingform.friday[i].value);
    }
}

if(document.bookingform.conferencedinner.checked == true) {
var conferencedinner = 26;
}

total = tuesdaydinner + tuesdaybedroom + fullconference + wednesday + thursday + friday + conferencedinner;

document.bookingform.total.value = ("£" + total);
}