qFormAPI.packages.validation = true;
 
// define Field isNotNull(); prototype
function _Field_isNotNull(){
	// check for blank field
	if( this.value.length == 0 ){
		this.error = "You must specify a(n) " + this.description + ".";
	}
}
_addValidator("isNotNull", _Field_isNotNull, true);
 
// define Field isNotEmpty(); prototype
function _Field_isNotEmpty(){
	// check for blank field
	if( _ltrim(this.value).length == 0 ){
		this.error = "You must specify a(n) " + this.description + ".";
	}
}
_addValidator("isNotEmpty", _Field_isNotEmpty);
 
// define Field isEmail(); prototype
function _Field_isEmail(){
	// check for @ . or blank field
	if( this.value.indexOf(" ") != -1 ){
		this.error = "Invalid " + this.description + " address. An e-mail address should not contain a space.";
	} else if( this.value.indexOf("@") == -1 ){
		this.error = "Invalid " + this.description + " address. An e-mail address must contain the @ symbol.";
	} else if( this.value.indexOf("@") == 0 ){
		this.error = "Invalid " + this.description + " address. The @ symbol can not be the first character of an e-mail address.";
	} else if( this.value.substring(this.value.indexOf("@")+2).indexOf(".") == -1 ){
		this.error = "Invalid " + this.description + " address. An e-mail address must contain at least one period after the @ symbol.";
	} else if( this.value.lastIndexOf("@") == this.value.length-1 ){
		this.error = "Invalid " + this.description + " address. The @ symbol can not be the last character of an e-mail address.";
	} else if( this.value.lastIndexOf(".") == this.value.length-1 ){
		this.error = "Invalid " + this.description + " address. A period can not be the last character of an e-mail address.";
	}
}
_addValidator("isEmail", _Field_isEmail);
 
// define Field isPassword(); prototype
function _Field_isPassword(field, minlen, maxlen){
	var minlen = _param(arguments[1], 1, "number");   // default minimum length of password
	var maxlen = _param(arguments[2], 255, "number"); // default maximum length of password
 
	if( field != null && !this.compare(field) ){
		this.error = "The " + this.description + " and " + this.qForm[field].description + " values do not match.";
	}
 
	// if there aren't an errors yet
	if( this.error.length == 0 ){
		if( (this.value.length < minlen) || (this.value.length > maxlen) ){
			this.error = "The " + this.description + " field must be between " + minlen.toString() + " and " + maxlen.toString() + " characters long.";
		}
	}
}
_addValidator("isPassword", _Field_isPassword);
 
// define Field isSame(); prototype
function _Field_isSame(field){
	if( !this.compare(field) ){
		this.error = "The " + this.description + " and " + this.qForm[field].description + " values do not match.";
	}
}
_addValidator("isSame", _Field_isSame);
 
// define Field isDifferent(); prototype
function _Field_isDifferent(field){
	if( this.compare(field) ){
		this.error = "The " + this.description + " and " + this.qForm[field].description + " must be different.";
	}
}
_addValidator("isDifferent", _Field_isDifferent);
 
// define Field isRange(); prototype
function _Field_isRange(low, high){
	var low = _param(arguments[0], 0, "number");
	var high = _param(arguments[1], 9999999, "number");
	var iValue = parseInt(this.value, 10);
	if( isNaN(iValue) ) iValue = 0;
 
	// check to make sure the number is within the valid range
	if( ( low > iValue ) || ( high < iValue ) ){
		this.error = "The " + this.description + " field does not contain a\nvalue between " + low + " and " + high + ".";
	}
}
_addValidator("isRange", _Field_isRange);
 
// define Field isInteger(); prototype
function _Field_isInteger(){
	var i = parseInt(this.value, 10);
	// make sure the user specified a numeric value
	if( isNaN(i) || (String(i) != this.value) ){
		this.error = "The value for " + this.description + " is not a numeric value. This field requires a numeric value.";
	}
}
_addValidator("isInteger", _Field_isInteger);
 
// define Field isNumeric(); prototype
function _Field_isNumeric(){
	var i = parseFloat(this.value, 10);
	// make sure the user specified a numeric value
	if( isNaN(i) || (String(i) != this.value) ){
		this.error = "The value for " + this.description + " is not a numeric value. This field requires a numeric value.";
	}
}
_addValidator("isNumeric", _Field_isNumeric);
 
// define Field isAlpha(); prototype
function _Field_isAlpha(){
	if( !_isLength(this.value, this.value.length, "alpha") ){
		this.error = "The value for " + this.description + " must contain only alpha characters.";
	}
}
_addValidator("isAlpha", _Field_isAlpha);
 
// define Field isAlphaNumeric(); prototype
function _Field_isAlphaNumeric(){
	if( !_isLength(this.value, this.value.length, "alphanumeric") ){
		this.error = "The value for " + this.description + " must contain only alpha-numeric characters.";
	}
}
_addValidator("isAlphaNumeric", _Field_isAlphaNumeric);
 
// define Field isDate(); prototype
function _Field_isDate(mask){
	var strMask = _param(arguments[0], "mm/dd/yyyy");
	var iMaskMonth = strMask.lastIndexOf("m") - strMask.indexOf("m") + 1;
	var iMaskDay = strMask.lastIndexOf("d") - strMask.indexOf("d") + 1;
	var iMaskYear = strMask.lastIndexOf("y") - strMask.indexOf("y") + 1;
 
	var strDate = this.value;
 
	// find the delimiter
	var delim = "", lstMask = "mdy";
	for( var i=0; i < strMask.length; i++ ){
		if (lstMask.indexOf(strMask.substring(i, i+1)) == -1){
			delim = strMask.substring(i, i+1);
			break;
		}
  }
	aMask = strMask.split(delim);
	if( aMask.length == 3 ){
		dt = this.value.split(delim);
		if( dt.length != 3 ) this.error = "An invalid date was provided for " + this.description + " field.";
		for( i=0; i < aMask.length; i++ ){
			if( aMask[i].indexOf("m") > -1 ) var sMonth = dt[i];
			else if( aMask[i].indexOf("d") > -1 ) var sDay = dt[i];
			else if( aMask[i].indexOf("y") > -1 ) var sYear = dt[i];
		}
	} else if( mask.length == 1 ){
		var sMonth = this.value.substring(strMask.indexOf("m")-1, strMask.lastIndexOf("m"));
		var sDay = this.value.substring(strMask.indexOf("d")-1, strMask.lastIndexOf("d"));
		var sYear = this.value.substring(strMask.indexOf("y")-1, strMask.lastIndexOf("y"));
	} else {
		this.error = "An invalid date mask was provided for " + this.description + " field.";
	}
 
	var iMonth = parseInt(sMonth, 10);
	var iDay = parseInt(sDay, 10);
	var iYear = parseInt(sYear, 10);
 
	if( isNaN(iMonth) || sMonth.length > iMaskMonth ) iMonth = 0;
	if( isNaN(iDay) || sDay.length > iMaskDay ) iDay = 0;
	if( isNaN(sYear) || sYear.length != iMaskYear ) sYear = null;
 
	lst30dayMonths = ",4,6,9,11,";
 
	if( sYear == null ){
		this.error = "An invalid year was provided for the " + this.description + " field. The year \n   should be a " + iMaskYear + " digit number.";
	} else if(  (iMonth < 1) || (iMonth > 12 ) ){
		this.error = "An invalid month was provided for " + this.description + " field.";
	} else {
		if( iYear < 100 ) var iYear = iYear + ((iYear > 20) ? 1900 : 2000);
		var iYear = (sYear.length == 4) ? parseInt(sYear, 10) : parseInt("20" + sYear, 10);
		if( lst30dayMonths.indexOf("," + iMonth + ",") > -1 ){
			if( (iDay < 1) || (iDay > 30 ) ) this.error = "An invalid day was provided for the " + this.description + " field.";
		} else if( iMonth == 2 ){
			if( (iDay < 1) || (iDay > 28 && !( (iDay == 29) && (iYear%4 == 0 ) ) ) ) this.error = "An invalid day was provided for the " + this.description + " field.";
		} else {
			if( (iDay < 1) || (iDay > 31 ) ) this.error = "An invalid day was provided for the " + this.description + " field.";
		}
	}
 
}
_addValidator("isDate", _Field_isDate);
 
 
// define Field isCreditCard(); prototype
function _Field_isCreditCard(){
	var strCC = _stripInvalidChars(this.value, "numeric").toString();
	var isNumeric = (strCC.length > 0) ? true : false;
 
	if( isNumeric ){
		// now check mod10
		var dd = (strCC.length % 2 == 1) ? false : true;
		var cd = 0;
		var td;
 
		for( var i=0; i < strCC.length; i++ ){
			td = parseInt(strCC.charAt(i), 10);
			if( dd ){
				td *= 2;
				cd += (td % 10);
				if ((td / 10) >= 1.0) cd++;
				dd = false;
			} else {
				cd += td;
				dd = true;
			}
		}
		if( (cd % 10) != 0 ) this.error = "The credit card number entered in the " + this.description + " field is invalid.";
	} else {
		this.error = "The credit card number entered in the " + this.description + " field is invalid.";
	}
}
_addValidator("isCreditCard", _Field_isCreditCard);
 
// define Field isPhoneNumber(); prototype
function _Field_isPhoneNumber(len){
	var len = parseInt(_param(arguments[0], 10, "number"), 10);
	var description = (this.description == this.name.toLowerCase()) ? "phone number" : this.description;
 
	// check to make sure the phone is the correct length
	if( !_isLength(this.value, len) ){
		this.error = "The " + description + " field must include " + len + " digits.";
	}
}
_addValidator("isPhoneNumber", _Field_isPhoneNumber);
 
// define Field isLength(); prototype
function _Field_isLength(len, type){
	var len = parseInt(_param(arguments[0], 10, "number"), 10);
	var type = _param(arguments[1], "numeric");
 
	// check to make sure the phone is the correct length
	if( !_isLength(this.value, len, type) ){
		this.error = "The " + this.description + " field must include " + len + " " + type + " characters.";
	}
}
_addValidator("isLength", _Field_isLength);
 
// define Field isSSN(); prototype
function _Field_isSSN(){
	var description = (this.description == this.name.toLowerCase()) ? "social security" : this.description;
 
	// check to make sure the phone is the correct length
	if( !_isLength(this.value, 9) ){
		this.error = "The " + description + " field must include 9 digits.";
	}
}
_addValidator("isSSN", _Field_isSSN);
 
 
// define Field isState(); prototype
function _Field_isState(){
	// check to make sure the phone is the correct length
	if( _getState(this.value) == null ){
		this.error = "The " + this.description + " field must contain a valid 2-digit state abbreviation.";
	}
}
_addValidator("isState", _Field_isState);
 
// define Field isZipCode(); prototype
function _Field_isZipCode(){
	var description = (this.description == this.name.toLowerCase()) ? "zip code" : this.description;
 
	iZipLen = _stripInvalidChars(this.value).length;
 
	// check to make sure the zip code is the correct length
	if( iZipLen != 5 && iZipLen != 9 ){
		this.error = "The " + description + " field must contain either 5 or 9 digits.";
	}
}
_addValidator("isZipCode", _Field_isZipCode);
 
// define Field isFormat(); prototype
function _Field_isFormat(mask, type){
	var mask = _param(arguments[0]);
	var type = _param(arguments[1], "numeric").toLowerCase();
	var strErrorMsg = "";
 
	var strMaskLC = mask.toLowerCase();
	// define quick masks
	if( strMaskLC == "ssn" ){
		mask = "xxx-xx-xxxx";
		type = "numeric";
		var description = (this.description == this.name.toLowerCase()) ? "social security number" : this.description;
		strErrorMsg = "The " + description + " field must contain 9 digits and \nshould be in the format: " + mask;
 
	} else if( (strMaskLC == "phone") || (strMaskLC == "phone1") ){
		mask = "(xxx) xxx-xxxx";
		type = "numeric";
		var description = (this.description == this.name.toLowerCase()) ? "phone number" : this.description;
		strErrorMsg = "The " + description + " field must contain 10 digits and \nshould be in the format: " + mask;
 
	} else if( strMaskLC == "phone2" ){
		mask = "xxx-xxx-xxxx";
		type = "numeric";
		var description = (this.description == this.name.toLowerCase()) ? "phone number" : this.description;
		strErrorMsg = "The " + description + " field must contain 10 digits and \nshould be in the format: " + mask;
 
	} else if( strMaskLC == "phone3" ){
		mask = "xxx/xxx-xxxx";
		type = "numeric";
		var description = (this.description == this.name.toLowerCase()) ? "phone number" : this.description;
		strErrorMsg = "The " + description + " field must contain 10 digits and \nshould be in the format: " + mask;
 
	} else if( strMaskLC == "phone7" ){
		mask = "xxx-xxxx";
		type = "numeric";
		var description = (this.description == this.name.toLowerCase()) ? "phone number" : this.description;
		strErrorMsg = "The " + description + " field must contain 7 digits and \nshould be in the format: " + mask;
 
	} else if( strMaskLC == "zip" ){
		if( _stripInvalidChars(this.value).length < 6 ){
			mask = "xxxxx";
		} else {
			mask = "xxxxx-xxxx";
		}
		type = "numeric";
		var description = (this.description == this.name.toLowerCase()) ? "zip code" : this.description;
		strErrorMsg = "The " + description + " field should contain either 5 or 9 digits \nand be in the format: xxxxx or xxxxx-xxxx";
 
	} else if( strMaskLC == "zip5" ){
		mask = "xxxxx";
		type = "numeric";
		var description = (this.description == this.name.toLowerCase()) ? "zip code" : this.description;
		strErrorMsg = "The " + description + " field should contain 5 digits \nand be in the format: " + mask;
 
	} else if( strMaskLC == "zip9" ){
		mask = "xxxxx-xxxx";
		type = "numeric";
		var description = (this.description == this.name.toLowerCase()) ? "zip code" : this.description;
		strErrorMsg = "The " + description + " field should contain 9 digits \nand be in the format: " + mask;
	} else {
		var description = this.description;
	}
 
	var string = _stripInvalidChars(this.value, type);
	var masklen = _stripInvalidChars(mask, "x").length;
 
	// check to make sure the string contains the correct number of characters
	if( string.length != masklen && this.value.length > 0){
		if( strErrorMsg.length == 0 ) strErrorMsg = "This field requires at least " + masklen + " valid characters. Please \nmake sure to enter the value in the format: \n   " + mask + "\n(where 'x' is a valid character.)";
		this.error = strErrorMsg;
 
	// else re-format the string as defined by the mask
	} else if( string.length == masklen ){
		// find the position of all non "X" characters
		var stcMask = new Object();
		var lc = mask.toLowerCase();
		// loop through the string an make sure each character is an valid character
		for( var i=0; i < mask.length; i++ ){
			if( lc.charAt(i) != "x" ) stcMask[i] = mask.charAt(i);
	  }
 
		// put all the non-"X" characters back into the parsed string
		var iLastChar = 0;
		var newString = "";
		var i = 0;
		for( var pos in stcMask ){
			pos = parseInt(pos, 10);
			if( pos > iLastChar ){
				newString += string.substring(iLastChar, pos-i) + stcMask[pos];
				iLastChar = pos-i;
			} else {
				newString += stcMask[pos];
			}
			i++;
		}
		if( i == 0 ){
			newString = string;
		} else {
			newString += string.substring(iLastChar);
		}
 
		// set the value of the field to the new string--make sure not to perform the onBlur event
		this.setValue(newString, true, false);
	}
}
_addValidator("isFormat", _Field_isFormat);
 
// define Field isLengthGT(); prototype
function _Field_isLengthGT(len){
	if( this.obj.value.length <= len){
		this.error = "The " + this.description + " field must be greater than " + len + " characters.";
	}
}
_addValidator("isLengthGT", _Field_isLengthGT);
 
// define Field isLengthLT(); prototype
function _Field_isLengthLT(len){
	if( this.obj.value.length >= len){
		this.error = "The " + this.description + " field must be less than " + len + " characters.";
	}
}
_addValidator("isLengthLT", _Field_isLengthLT);