function changePi(category,pi) {
	window.location = '/shop-online/'+category+'/pi'+encodeURI(pi);
}

function changePf(category,pf) {
	window.location = '/shop-online/'+category+'/pf'+encodeURI(pf);
}

function changeCf(category,cf) {
	window.location = '/shop-online/'+category+'/cf'+encodeURI(cf);
}

function changeAccSection(el) {
	document.getElementById('ya-your-details').style.display = 'none';
	document.getElementById('ya-order-history').style.display = 'none';
	document.getElementById('ya-delivery-addresses').style.display = 'none';
	document.getElementById('link-your-details').setAttribute("class", "your-account-nav"); 
	document.getElementById('link-order-history').setAttribute("class", "your-account-nav"); 
	document.getElementById('link-delivery-addresses').setAttribute("class", "your-account-nav"); 
	
	document.getElementById('link-'+el).setAttribute("class", "your-account-navon"); 
	document.getElementById('ya-'+el).style.display = 'block';
}

function shPWC() {
	var btn = document.getElementById('change-pw-btn');
	var tools = document.getElementById('change-pw-tools');
	
	if(tools.style.display == 'block') {
		tools.style.display = 'none';
		btn.style.display = 'block';
	} else {
		document.getElementById('newpwd').value = '';
		tools.style.display = 'block';
		document.getElementById('newpwd').focus();
		btn.style.display = 'none';
	}
}

function confirmDeleteAddress(adid) {
	if(confirm('Click OK to delete this delivery address')) {
		window.location = '/users/delete-address/'+adid;
	}
}

function confirmCancel(url) {
	if(confirm('Click OK to leave the current page\n\nWARNING: You will lose any unsaved changes')) {
		window.location = url;
	}
}

function changeEnq(val) {
	document.getElementById('general-enquiry').style.display = 'none';
	document.getElementById('parts-enquiry').style.display = 'none';
	document.getElementById(val+'-enquiry').style.display = 'block';
}

function changeTariff(tariff) {
	var tmp = tariff.split('-');
	var tariff = parseFloat(tmp[1]);
	var csub = parseFloat(document.getElementById('csub').innerHTML);
	var vatamt = ((csub+tariff)/100)*vatrate;
	
	$.ajax({
		type: "GET",
		url: "/ajax.php",
		data: "tariff="+tmp[0]
	});

	document.getElementById('cvat').innerHTML = currencyFormatted(vatamt);
	document.getElementById('cnet').innerHTML = currencyFormatted(csub+tariff+vatamt);
}

function currencyFormatted(amount)
{
	var i = parseFloat(amount);
	if(isNaN(i)) { i = 0.00; }
	var minus = '';
	if(i < 0) { minus = '-'; }
	i = Math.abs(i);
	i = parseInt((i + .005) * 100);
	i = i / 100;
	s = new String(i);
	if(s.indexOf('.') < 0) { s += '.00'; }
	if(s.indexOf('.') == (s.length - 2)) { s += '0'; }
	s = minus + s;
	return s;
}

function checkPostCode (toCheck) {

  // 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;
}