<!--
//HP Call: 127479, added for postcode validation.
function lfnPostcode()
{
//alert("in function");
// Permitted letters depend upon their position in the postcode.
var alpha1 = "[abcdefghijklmnoprstuwyz]";   // Character 1
var alpha2 = "[abcdefghklmnopqrstuvwxy]";   // Character 2
var alpha3 = "[abcdefghjkstuw]";            // Character 3
var alpha4 = "[abehmnprvwxy]";              // Character 4
var alpha5 = "[abdefghjlnpqrstuwxyz]";      // Character 5
	  
// Array holds the regular expressions for the valid postcodes
var pcexp = new Array ();

// Expression for postcodes: AN NAA, ANN NAA, AAN NAA, and AANN NAA
pcexp.push (new RegExp ("^(" + alpha1 + "{1}" + alpha2 + "?[0-9]{1,2})(\\s*)([0-9]{1}" + alpha5 + "{2})$","i"));
	  
// Expression for postcodes: ANA NAA
pcexp.push (new RegExp ("^(" + alpha1 + "{1}[0-9]{1}" + alpha3 + "{1})(\\s*)([0-9]{1}" + alpha5 + "{2})$","i"));

// Expression for postcodes: AANA  NAA
pcexp.push (new RegExp ("^(" + alpha1 + "{1}" + alpha2 + "?[0-9]{1}" + alpha4 +"{1})(\\s*)([0-9]{1}" + alpha5 + "{2})$","i"));
	  
// Exception for the special postcode GIR 0AA
pcexp.push (/^(GIR)(\s*)(0AA)$/i);
	  
// Standard BFPO numbers
pcexp.push (/^(bfpo)(\s*)([0-9]{1,4})$/i);
	  
// c/o BFPO numbers
pcexp.push (/^(bfpo)(\s*)(c\/o\s*[0-9]{1,3})$/i);

// Load up the string to check
//var postCode = toCheck;
var postCode = frmPL.txtWhere.value;

// Assume we're not going to find a valid postcode
var valid = false;
	  
// Check the string against the types of post codes
for ( var i=0; i<pcexp.length; i++) {
	if (pcexp[i].test(postCode)) {
		// The post code is valid - split the post code into component parts
		pcexp[i].exec(postCode);
			      
		// Copy it back into the original string, converting it to uppercase and
		// inserting a space between the inward and outward codes
		postCode = RegExp.$1.toUpperCase() + " " + RegExp.$3.toUpperCase();
			      
		// If it is a BFPO c/o type postcode, tidy up the "c/o" part
		postCode = postCode.replace (/C\/O\s*/,"c/o ");
			      
		valid = true;	// Load new postcode back into the form element
			      
		break; // Remember that we have found that the code is valid and break from loop
	}
}
	  
// Return with either the reformatted valid postcode or the original invalid 
// postcode
if (valid) {
	frmPL.txtWhere.value = postCode;
//	return true;
} 
//else return false;	
}
				
//-->