function totalise(form) {
   nights_price = 16.50
	peak_supplement_price = 2.0
	adults_price = 6.00
	children_price = 2.50
	car_price = 2.00
	tent_price = 4.00
	//awning_price = 3.50
	gazebo_price = 4.00
	//summerelec_price = 3.00
	//winterelec_price = 3.00
	elec_price = 3.00
	
	total_price = 0.0
   nights = form.NIGHTS.value
   // pitches = form.PITCHES.value  Not using this yet.
   pitches = 1
   pitchnights = nights*pitches
	if (parseInt(pitchnights) > 0) {
   total_price += pitchnights*nights_price
	
	if (form.PEAK_SUPPLEMENT.checked) { total_price += pitchnights*peak_supplement_price }

	if (form.ADD_CAR.checked) { total_price += nights*car_price }
	if (form.ADD_TENT.checked) { total_price += nights*tent_price }
	if (form.GAZEBO.checked) { total_price += nights*gazebo_price }
	if (form.ELEC.checked) { total_price += nights*elec_price}
   var adults_ind = form.ADD_ADULTS.selectedIndex
	var adults = parseInt(form.ADD_ADULTS.options[adults_ind].value)
   total_price += nights*adults*adults_price
   var children_ind = form.ADD_CHILDREN.selectedIndex
	var children = parseInt(form.ADD_CHILDREN.options[children_ind].value)
   total_price += nights*children*children_price
	} else {
	total_price = 0
	}
	pounds = Math.floor(total_price)
	pence = Math.floor(100*(total_price-pounds)+ 0.0001)
	form.TOTAL.value = pounds + "." + pence
}