function updatetable10() {

	multiplier = 850;

	total = "£" + document.booking.table10.value * multiplier + ".00";

	document.booking.table10out.value = total;
	
	showbookingtotal();
}

function updatetable12() {

	multiplier = 1020;

	total = "£" + document.booking.table12.value * multiplier + ".00";

	document.booking.table12out.value = total;
	
	showbookingtotal();
}

function updatetable1() {

	multiplier = 85;

	total = "£" + document.booking.table1.value * multiplier + ".00";

	document.booking.table1out.value = total;
	
	showbookingtotal();
}

function showbookingtotal(){

	total = (document.booking.table12.value * 1020) + 
			(document.booking.table10.value * 850) + 
			(document.booking.table1.value * 85)
			
	total = "£" + total + ".00"
	
	document.booking.total.value = total;


}