//  adwords magic AIMM Contact Form Validation Library
//  Version 2.0

function checkPostCode (toCheck) {

//  Parameters:    toCheck - postcodeto be checked.

//  This function checks the value of the parameter for a valid postcode format. The
//  space between the inward part and the outward part is optional, although is
//  inserted if not there as it is part of the official postcode.

//  If the postcode is found to be in a valid format, the function returns the
//  postcode properly formatted (in capitals with the outward code and the inward
//  code separated by a space. If the postcode is deemed to be incorrect a value of
//  false is returned.
  
//  Example call:
  
//    if (checkPostCode (myPostCode)) {
//      alert ("Postcode has a valid format")
//    }
//    else {alert ("Postcode has invalid format")};

//  Permitted letters depend upon their position in the postcode
    var alpha1 = "[abcdefghijklmnoprstuwyz]";                       // Character 1
    var alpha2 = "[abcdefghklmnopqrstuvwxy]";                       // Character 2
    var alpha3 = "[abcdefghjkpmnrstuvwxy]";                         // 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 + "{1}" + "?[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);
  
//  Overseas Territories
    pcexp.push (/^([A-Z]{4})(\s*)(1ZZ)$/i);

//  Load up the string to check
    var postCode = toCheck;

//  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 ");
      
        // Load new postcode back into the form element
        valid = true;
      
        // Remember that we have found that the code is valid and break from loop
        break;
        }
    }

//  Return with either the reformatted valid postcode or the original invalid postcode
    if (valid) {return postCode;} else return false;
} // End of checkPostCode()

function isNumeric(strString)
{
    var strValidChars = '0123456789 ';
    var strChar;
    var blnResult = true;

    if (strString.length == 0) return false;

        for (i = 0; i < strString.length && blnResult == true; i++)
        {
            strChar = strString.charAt(i);
            if (strValidChars.indexOf(strChar) == -1)
            {
                blnResult = false;
            }
        }
    return blnResult;
}  // End of isNumeric()

function isEmail(string)
{
    if (string.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1)
        return true;
    else
        return false;
}  // End of isEmail()

function setbg(color)
{
document.getElementById("styled").style.background=color
} // End of setbg()