function	testPostcode	(pcode)
{
	test = pcode
	size = test.length
	//test = test.toUpperCase(); //Change to uppercase

	//	Strip leading spaces
	while (test.slice(0,1) == " ")
	{
		test = test.substr(1,size-1);size = test.length
	}

	//	Strip trailing spaces
	while(test.slice(size-1,size)== " ")
	{
		test = test.substr(0,size-1);size = test.length
	}

	//	Code length rule
	if (size < 6 || size > 8)
		{ alert(test + " is not a valid postcode - wrong length"); return false }

	//	leftmost character must be alpha character rule
	if (!(isNaN(test.charAt(0))))
		{ alert(test + " is not a valid postcode - cannot start with a number"); return false }

	//	first character of inward code must be numeric rule
	if (isNaN(test.charAt(size-3)))
		{ alert(test + " is not a valid postcode - alpha character in wrong position"); return false }

	//	second character of inward code must be alpha rule
	if (!(isNaN(test.charAt(size-2))))
		{ alert(test + " is not a valid postcode - number in wrong position"); return false }

	//	third character of inward code must be alpha rule
	if (!(isNaN(test.charAt(size-1))))
		{ alert(test + " is not a valid postcode - number in wrong position"); return false }

	//	space in position length-3 rule
	if (!(test.charAt(size-4) == " "))
		{ alert(test + " is not a valid postcode - no space or space in wrong position"); return false }

	//	only one space rule
	count1 = test.indexOf(" ");count2 = test.lastIndexOf(" ");
	if (count1 != count2)
		{ alert(test + " is not a valid postcode - only one space allowed"); return false }

	return true
}