var warningTriangle = "<img src=\"/graphics/dialog-warning.png\" width=\"16\" height=\"16\" style=\"vertical-align: text-bottom;\">";
var validIcon = "<img src=\"/graphics/face-smile.png\" width=\"16\" height=\"16\" style=\"vertical-align: text-bottom;\">";
function findObj(n, d) { //v4.01
	var p, i, x;
	if (!d) {
		d = document;
	}
	if ((p = n.indexOf("?")) > 0 && parent.frames.length) {
		d = parent.frames[n.substring(p + 1)].document;
		n = n.substring(0, p);
	}
	if (!(x = d[n]) && d.all) {
		x = d.all[n];
	}
	for (i = 0; !x && i < d.forms.length; i++) {
		x = d.forms[i][n];
	}
	for (i = 0; !x && d.layers && i < d.layers.length; i++) {
		x = MM_findObj(n, d.layers[i].document);
	}
	if (!x && d.getElementById) {
		x = d.getElementById(n);
	}
	return x;
}
function validateFieldLength(testField, minLength, errorField) {
	testElem = findObj(testField);
	errorElem = findObj(errorField);
	testFieldVal = testElem.value;
	if (testFieldVal.length >= minLength) {
		errorElem.style.display = "none";
		valid = true;
	} else {
		errorElem.style.display = "";
		valid = false;
	}
	return valid;
}
function validatePasswordsMatch(pwdField, pwdConfirmField, errorField, matchText, errText) {
	pwdElem = findObj(pwdField);
	pwdConfirmElem = findObj(pwdConfirmField);
	errorElem = findObj(errorField);
	pwdVal = pwdElem.value;
	pwdConfirmVal = pwdConfirmElem.value;
	
	if (pwdVal == pwdConfirmVal) {
		errorElem.style.display = "";
		errorElem.style.color = "green";
		errorElem.innerHTML = validIcon + "&nbsp;" + matchText;
		valid = true;
	} else {
		errorElem.style.display = "";
		errorElem.style.color = "red";
		errorElem.innerHTML = warningTriangle + "&nbsp;" + errText;
		valid = false;
	}
	return valid;
}

function validateEmail(emailField, errText) {
  emailElem = findObj(emailField);
  errorElem = findObj(emailField + "_msg");
  emailVal = emailElem.value;
  valid = checkEmailAddress(emailVal);
  if (!valid) {
    errorElem.style.display = "";
    errorElem.innerHTML = warningTriangle + "&nbsp;" + errText;
  } else {
    errorElem.style.display = "none";
  }
  return valid;
}

function validateEmailPermitEmpty(emailField, errText) {
  emailElem = findObj(emailField);
  errorElem = findObj(emailField + "_msg");
  emailVal = emailElem.value;
  valid = checkEmailAddress(emailVal);
  if ((emailVal.length > 0) && (!valid)) {
    errorElem.style.display = "";
    errorElem.innerHTML = warningTriangle + "&nbsp;" + errText;
  } else {
    errorElem.style.display = "none";
  }
  return valid;
}

function checkEmailAddress(emailAddr) {
   result = false;
   // Check 2 or 3 letter domain
   var len = emailAddr.length;
   var pos = emailAddr.lastIndexOf ( '.', len - 1 ) + 1;
   if ( ( len - pos ) == 2 || ( len - pos )== 3 ) {
       // Check for @ character in correct place
       p = emailAddr.indexOf("@");
       if (p >= 1 && p < (emailAddr.length - 4)) {
         result = true;
       }
   }
   
   return result;
}

function validatePostCodeField(postcodeField, errorMsg) {
  postcodeElem = findObj(postcodeField);
  errorElem = findObj(postcodeField + "_msg");
  postcodeVal = postcodeElem.value;
  valid = true;
  var white_label = '';
  
  //get white_label from hidden value in the form  
  white_label = $(':input[name=white_label]').val();
  
  if (white_label != 'de') {
	  valid = checkPostCode(postcodeVal);	  
  } else {
	  valid = true;
  }
  
  if (!valid) {
    errorElem.style.display = "";
    errorElem.innerHTML = warningTriangle + "&nbsp;" + errorMsg;
  } else {
    errorElem.style.display = "none";  
  }
  
  return valid;
}

function checkName(name) {
	var valid = false;
	
	// trim the whitespaces and check the 
	// length of the name 	
	name = name.replace(/(^\s+|\s+$)/g,"");
	
	var regpattern = new RegExp("[;!\$%\*\^\{\}\(\)\<\>#]");
		
	if ((regpattern.test(name)) || (name.length < 2))
	{
		valid = false;
	}
	else
	{
		valid = true;
	}	
	
	return valid;
}

function checkPostCode(postcode) {
	
  //get white_label from hidden value in the form  
  white_label = $(':input[name=white_label]').val()
  
  if (white_label == 'de') {
	  return true;	  
  } 
	
	var i;
  var result = true;
	var clean_postcode = "";
  
  // Check postcode format
  var len = postcode.length;
  
  //First trim and remove spaces
  var j = 0;
  for (i = 0; i < len; i++) {
  	if (postcode.charAt(i) != ' ') {
  		clean_postcode+= postcode.charAt(i);
  		j++;
  	} 
  }
  result = (j >= 5) && (j <= 7);
  if (result) {
		//Now we know the length is good and there are no spaces
		clean_postcode = clean_postcode.toUpperCase();
		
		//Split into the two parts
		var part_a = clean_postcode.substring(0,j-3);
		var part_b = clean_postcode.substring(j-3);
		result = (is_alpha(part_a.charAt(0)) &&
							is_digit(part_b.charAt(0)) && 
							is_alpha(part_b.charAt(1)) && 
							is_alpha(part_b.charAt(2)));
		
		//Check for valid characters in certain positions
		if (result) {
			var c1 = part_a.charAt(0);
			result = ( (c1 != 'Q') && (c1 != 'V') && (c1 != 'X') );
			if (result) {
				var c2 = part_a.charAt(1);
				result = ( (c2 != 'I') && (c2 != 'J') && (c2 != 'Z') );
				if (result) {
					var c3 = part_b.charAt(1);
					var c4 = part_b.charAt(2);
					result = ( (c3 != 'C') && (c3 != 'I') && (c3 != 'K') && (c3 != 'M') && (c3 != 'O') && (c3 != 'V') &&
										 (c4 != 'C') && (c4 != 'I') && (c4 != 'K') && (c4 != 'M') && (c4 != 'O') && (c4 != 'V') );
										 
					//Now check format of first part
					//Permitted formats are:
					// AN NAA
					// ANN NAA
					// AAN NAA
					// AANN NAA
					// ANA NAA
					// AANA NAA
					// Already checked first character and last part so just look at 2nd char onward of first part					 
					if (result) {
						var part_a_format = "A";
						var z;
						for (z = 1; z < part_a.length; z++) {
							if (is_digit(part_a.charAt(z))) {
								part_a_format += "N";
							} else if (is_alpha(part_a.charAt(z))) {
								part_a_format += "A";
							} else {
								part_a_format += "X";
							}
						}
						result = ( (part_a_format == "AN") ||
											 (part_a_format == "ANN") ||
											 (part_a_format == "AAN") ||
											 (part_a_format == "AANN") ||
											 (part_a_format == "ANA") ||
											 (part_a_format == "AANA") );
					
					}										 
				}				
			}
		}
  }
  return result;
}

function is_digit(c) {
	return ( (c >= '0') && (c <= '9'));
}

function is_alpha(c) {
	return ( (c >= 'A') && (c <= 'Z'));
}



function ___validateForm() {
  document.MM_returnValue = true;
}

function validateForm() {
  var i, p, q, nm, test, num, min, max, val, validPostCode, validEmail,  error_elem, errors = "", args = validateForm.arguments;
  for (i = 0; i < (args.length - 2); i += 3) {
    test = args[i + 2];
    val = findObj(args[i]);
    error_elem = findObj(args[i] + "_msg");
    error_elem.style.display = "none";
    if (val) {
      nm = val.name;
      if ((val = val.value) !== "") {
        if (test.indexOf("DOB") != -1) {
          if (val >= 2008) {
            errors += "Date of birth is required.\n";
            error_elem.style.display = "";
          }
        } else if (test.indexOf("isOptEmail") != -1) {
          validEmail = checkEmailAddress(val);
          if (!validEmail) {
            errors += "- " + nm + " must contain an e-mail address.\n";
          }
        } else if (test.indexOf("isPostCode") != -1) {
          
          validPostCode = checkPostCode(val);        	
          if (!validPostCode) {
            errors += "- " + nm + " invalid post code.\n";
            error_elem.style.display = "";
          }
        } else if (test.indexOf("isEmail") != -1) {
          validEmail = checkEmailAddress(val);
          if (!validEmail) {
            errors += "- " + nm + " must contain an e-mail address.\n";
          }
        } else if (test.indexOf("isName") != -1) {          
        	q = val.indexOf(".");
        	validName = checkName(val);
          if ((!validName) || (q != -1)) {
            errors += "- " + nm + " must be a full name.\n";
            error_elem.style.display = "";
          }
        } else {
          if (test != "R") {
            num = parseFloat(val);
            if (isNaN(val)) {
              errors += "- " + nm + " must contain a number.\n";
            }
            if (test.indexOf("inRange") != -1) {
              p = test.indexOf(":");
              min = test.substring(8, p);
              max = test.substring(p + 1);
              if (num < min || max < num) {
                errors += "- " + nm + " must contain a number between " + min + " and " + max + ".\n";
              }
            }
          }
        }
      } else {
        if (test.charAt(0) == "R") {
          errors += "- " + nm + " is required.\n";
          error_elem.style.display = "";
        }
      }
    }
  }
  document.MM_returnValue = (errors === "");
}