var validationErrorMessage = new Object();
validationErrorMessage['required'] = 'required';
validationErrorMessage['numeric'] = 'number required';
validationErrorMessage['postcode'] = 'zip code incorrect';
validationErrorMessage['phone'] = 'Incorrect phone';
validationErrorMessage['pattern'] = 'Pattern incorrect';
validationErrorMessage['email'] = 'Incorrect email address';
validationErrorMessage['pwmatch'] = 'Passwords do not match';
validationErrorMessage['date'] = 'Date is incorrect';
validationErrorMessage['CCard'] = 'number incorrect';

var validationFunctions = new Object();
validationFunctions["required"] = isRequired;
validationFunctions["pattern"] = isPattern;
validationFunctions["postcode"] = isPostCode;
validationFunctions["phone"] = isPhone;
validationFunctions["numeric"] = isnumeric;
validationFunctions["email"] = isEmail;
validationFunctions["pwmatch"] = isPWMatch;
validationFunctions["date"] = isDate;
validationFunctions["CCard"] = isCCard;

function isCCard(formField){
	var ccType = formField.value.toUpperCase;
	switch(ccType) {
		case 'AMEX':
			//var goodCC = /^3[47]{1}[0-9]{13}$/;
			return isPattern(formField,"3[47]{1}[0-9]{13}");
			break;
		case 'VISA':
			//var goodCC = /^4[0-9]{15}$/;
			return isPattern(formField,"4[0-9]{15}");
			break;
		case 'MC':
		case 'MASTERCARD':
			//var goodCC = /^5[1-5]{1}[0-9]{14}$/;
			return isPattern(formField,"5[1-5]{1}[0-9]{14}");
			break;
		case 'DISC':	
		case 'DISCOVER':
			//var goodCC = /^6011[0-9]{12}$/;
			return isPattern(formField,"6011[0-9]{12}");
			break;
		case 'NA':
			return false;
			break;
		default:
			//var goodCC = /^[0-9]{15,16}$/;
			return isPattern(formField,"[0-9]{15,16}");
			break;
	}
}

function isDate(formField){

}

function isRequired(formField) {
	switch (formField.type) {
		case 'text':
		case 'password':
		case 'textarea':
		case 'select-one':
			if (formField.value)
			return true;
			return false;
		case 'radio':
		var radios = formField.form[formField.name];
		for (var i=0;i<radios.length;i++) {
			if (radios[i].checked) return true;
		}
		return false;
		case 'checkbox':
		return formField.checked;
	}	
}

function isPattern(formField,pattern) {
	var pattern = pattern || formField.getAttribute('pattern');
	var regExp = new RegExp("^"+pattern+"$","");
	var correct = regExp.test(formField.value);
	if (!correct && formField.getAttribute('patternDesc'))
		correct = formField.getAttribute('patternDesc');
	return correct;
}

function isPostCode(formField) {
	return isPattern(formField,"\\d{4}\\s*\\D{2}");
}

function isnumeric(formField) {
	return isPattern(formField,"\\d+");
}

function isEmail(formField) {
	//return isPattern(formField,"\\w*@\\w*\.\\w{2,4}")
	return isPattern(formField,"(?:\w*\.?)*\w*@(?:\w*\.)*\w*")
	//return isPattern(formField,"\w+([\.-]?\w+)*@\w+([\.-]?\w+)*\.(\w{2}|(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum))")
}

function isPhone(formField){
	return phone(formField);
}

function isPWMatch(formField){
	var objForm = formField.form
	var pw1 = objForm[formField.name.replace("2", "")]
	var pw2 = formField
	return passwordVerify(pw1, pw2);
}

function emptyFunction() {
	return true;
}

/*********************************/

var W3CDOM = document.createElement && document.getElementsByTagName;

function validateForms() {
	if (!W3CDOM) return;
	var forms = document.forms;
	for (var i=0;i<forms.length;i++) {
		forms[i].onsubmit = validate;
	}
}

addEventSimple(window,'load',validateForms);

function validate() {
	var els = this.elements;
	var validForm = true;
	var firstError = null;
	for (var i=0;i<els.length;i++) {
		if (els[i].removeError)
			els[i].removeError();
		var req = els[i].getAttribute('validation');
		if (!req) continue;
			var reqs = req.split(' ');
		if (els[i].getAttribute('pattern'))
			reqs[reqs.length] = 'pattern';
		for (var j=0;j<reqs.length;j++) {
			if (!validationFunctions[reqs[j]])
				validationFunctions[reqs[j]] = emptyFunction;
			var OK = validationFunctions[reqs[j]](els[i]);
			if (OK != true) {
				var errorMessage = OK || validationErrorMessage[reqs[j]];
				writeError(els[i],errorMessage)
				validForm = false;
				if (!firstError)
					firstError = els[i];
				break;
			}
		}
	}

	if (!validForm) {
		//alert("Errors have been found");
		showMessage("Errors have been found and identified on the form you submitted.", 400, 300);
		location.hash = '#';
	}
	return validForm;
}

function writeError(obj,message) {
	obj.className += ' errorMessage';
	obj.onchange = removeError;
	if (obj.errorMessage || obj.parentNode.errorMessage) return;
	var errorMessage = document.createElement('label');
	errorMessage.className = 'errorMessage';
	errorMessage.setAttribute('for',obj.id);
	errorMessage.setAttribute('htmlFor',obj.id);
	errorMessage.appendChild(document.createTextNode(message));
	obj.parentNode.appendChild(errorMessage);
	obj.errorMessage = errorMessage;
	obj.parentNode.errorMessage = errorMessage;
}

function removeError() {
	this.className = this.className.replace(/errorMessage/,'');
	if (this.errorMessage) {
		this.parentNode.removeChild(this.errorMessage);
		this.errorMessage = null;
		this.parentNode.errorMessage = null;
	}
	this.onchange = null;
}

function passwordVerify(pw1, pw2){
	var rtnFlag = false;
	if (pw1.value == pw2.value){
		rtnFlag = true;
	}
	return rtnFlag;
}

function phone(obj) {
  // entry could include special characters. get rid of them
  var baseNum = iconv(obj.value);
  var rtnVal = "";
  var rtnFlag = false;
  baseNum.toString();
  var baseLength = baseNum.length;
  if (baseLength != 10 && baseLength != 7 && baseLength != 0) {
    alert("You must enter a seven or ten digit number!");
    obj.focus()
  } else {
    if (baseLength == 10) {
      rtnVal  = baseNum.substring(0,3) + " " + baseNum.substring(3,6) 
      rtnVal += "-" + baseNum.substring(6,baseLength);
    }
    if (baseLength == 7) {
      rtnVal = baseNum.substring(0,3) + "-" + baseNum.substring(3,7)
    }
	rtnFlag = true;
  }
  obj.value = rtnVal;
  return rtnFlag;
}
function iconv(val) {
  var strLength = val.length;
  var rtnVal = '';
  for (var i=0; i <strLength; i++) {
    curVal = val.charAt(i);
    if ( isNaN(curVal) != true && curVal != " ") { rtnVal += val.charAt(i); }
  }
  return rtnVal;
}


// end -->