function __checkPostCodes(id) {
	var re1 = /^[a-zA-Z]{1,2}\d{1,2} \d{1}[a-zA-Z]{2}$/gi;
	var re2 = /^[a-zA-Z]{1,2}\d{1}[a-zA-Z]{1} \d{1}[a-zA-Z]{2}$/gi;
	var postcode = document.getElementById(id);
	if(String(postcode.value).length == 0) {
		postcode.focus();
		alert("POSTCODE CAN`T BE EMPTY");
		return false;
	}
	if(!re1.test(postcode.value) || re2.test(postcode.value)) {
		postcode.focus();
		alert("IS NOT A VALID POST CODE");
		return false;
	}
	return true;
}