// VARIABLE DECLARATIONS
String.prototype.Trim=function(){return this.replace(/(^\s*)|(\s*$)/g,"");}
String.prototype.Ltrim = function(){return this.replace(/(^\s*)/g, "");}
String.prototype.Rtrim = function(){return this.replace(/(\s*$)/g, "");}

var digits = "0123456789";
var lowercaseLetters = "abcdefghijklmnopqrstuvwxyz"
var uppercaseLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"

// whitespace characters
var whitespace = " \t\n\r";

// decimal point character differs by language and culture
var decimalPointDelimiter = "."

// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";

var specialChars = "~@#$%^&*><";


// <-----There is a modification here-----******
// characters which are allowed in phone numbers
var validPhoneChars = digits + phoneNumberDelimiters;



// CONSTANT STRING DECLARATIONS
// (grouped for ease of translation and localization)


// c is an abbreviation for "compare"

var cPrefix = "两次输入的"
var cSuffix = "不相同"

// cf is an abbreviation for "confirm"
var cfPrefix = "您确定要"
var cfSuffix = "吗？"

// m is an abbreviation for "missing"

var mPrefix = "您没有输入"
var mSuffix = "，但这是必须输入的，请完成。"

// i is an abbreviation for "invlid"

var iPrefix = "您输入了无效的"
var iSuffix = "，请重新输入。"

// s is an abbreviation for "string"

var sPasswd = "密码"
var sPhone = "电话号码"
var sDateOfBirth = "出生日期"
var sEmail = "Email地址"
var sDay = "日期"
var sMonth = "月份"
var sYear = "年份"

// h is an abbreviation for "hint"

var hPasswd = "（应该是 6 位字母或数字）"
var hNumericPasswd = "（应该是6位数字）"
var hEmail = "（应该是 foo@bar.com 类型）"
var hDate = "（应该是 YYYY-MM-DD 类型）"



// Global variable defaultEmptyOK defines default return value 
// for many functions when they are passed the empty string. 
// By default, they will return defaultEmptyOK.

var defaultEmptyOK = false


//<-----there is point has a modification-----*****
daysInMonth = new Array();
daysInMonth[1] = 31;
daysInMonth[2] = 29;   // must programmatically check this
daysInMonth[3] = 31;
daysInMonth[4] = 30;
daysInMonth[5] = 31;
daysInMonth[6] = 30;
daysInMonth[7] = 31;
daysInMonth[8] = 31;
daysInMonth[9] = 30;
daysInMonth[10] = 31;
daysInMonth[11] = 30;
daysInMonth[12] = 31;



// Check whether string s is empty.
function isEmpty(s){
    if ((s == null) || ((s.Trim()).length == 0)) return true;
    var count = 0;
    for(i=0;i<s.length;i++){
        if(s.charCodeAt(i) == 12288) count++;
    }
    if(count == s.length) return true;

    return false;
}

function isSpecial(s) {
    return charsInBag(s,specialChars);	
}

// Returns true if string s is empty or 
// whitespace characters only.
function isWhitespace (s)

{   var i;

    // Is s empty?
    if (isEmpty(s)) return true;

    // Search through string's characters one by one
    // until we find a non-whitespace character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);

        if (whitespace.indexOf(c) == -1) return false;
    }

    // All characters are whitespace.
    return true;
}



// < ----- Add a function here ----- *****
// Detect if the specified character exist in string bag
function charsInBag (s, bag) {
	
	var c,i,j;
	j = s.length;
	
	for (i = 0; i < j; i++ ) {
		c = s.charAt(i);
		if (bag.indexOf(c) == -1) return false;
	}
	
	return true;
}


// Removes all characters which appear in string bag from string s.
function stripCharsInBag (s, bag)
{   var i;
    var returnString = "";

    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }

    return returnString;
}



// Removes all characters which do NOT appear in string bag 
// from string s.
function stripCharsNotInBag (s, bag)

{   var i;
    var returnString = "";

    // Search through string's characters one by one.
    // If character is in bag, append to returnString.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) != -1) returnString += c;
    }

    return returnString;
}


// Removes all whitespace characters from s.
// Global variable whitespace (see above)
// defines which characters are considered whitespace.
function stripWhitespace (s){
	return stripCharsInBag (s, whitespace)
}


// Removes initial (leading) whitespace characters from s.
// Global variable whitespace (see above)
// defines which characters are considered whitespace.

function stripInitialWhitespace (s)

{   var i = 0;
	//<-----there is a modification here------******
    //while ((i < s.length) && charInString (s.charAt(i), whitespace))
    while((i < s.length) && (whitespace.indexOf(s.charAt(i)) != -1))
       i++;
    
    return s.substring (i, s.length);
}



// Returns true if character c is an English letter 
// (A .. Z, a..z).
//
// NOTE: Need i18n version to support European characters.
// This could be tricky due to different character
// sets and orderings for various languages and platforms.

function isLetter (c)
{   return ( ((c >= "a") && (c <= "z")) || ((c >= "A") && (c <= "Z")) )
}


// Returns true if character c is a digit 
// (0 .. 9).
function isDigit (c)
{   return ((c >= "0") && (c <= "9"))
}


// Returns true if character c is a letter or digit.
function isLetterOrDigit (c)
{   return (isLetter(c) || isDigit(c))
}



// isInteger (STRING s [, BOOLEAN emptyOK])
// Returns true if all characters in string s are numbers.
function isInteger (s){
	var i;

    if (isEmpty(s)) 
       if (isInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isInteger.arguments[1] == true);

    // Search through string's characters one by one
    // until we find a non-numeric character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);

        if (!isDigit(c)) return false;
    }

    // All characters are numbers.
    return true;
}



// isSignedInteger (STRING s [, BOOLEAN emptyOK])
// Returns true if all characters are numbers; 
// first character is allowed to be + or - as well.
function isSignedInteger (s)

{   if (isEmpty(s)) 
       if (isSignedInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isSignedInteger.arguments[1] == true);

    else {
        var startPos = 0;
        var secondArg = defaultEmptyOK;

        if (isSignedInteger.arguments.length > 1)
            secondArg = isSignedInteger.arguments[1];

        // skip leading + or -
        if ( (s.charAt(0) == "-") || (s.charAt(0) == "+") )
           startPos = 1;    
        return (isInteger(s.substring(startPos, s.length), secondArg))
    }
}




// isPositiveInteger (STRING s [, BOOLEAN emptyOK])
// Returns true if string s is an integer > 0.
function isPositiveInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isPositiveInteger.arguments.length > 1)
        secondArg = isPositiveInteger.arguments[1];

    // The next line is a bit byzantine.  What it means is:
    // a) s must be a signed integer, AND
    // b) one of the following must be true:
    //    i)  s is empty and we are supposed to return true for
    //        empty strings
    //    ii) this is a positive, not negative, number

    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s) > 0) ) );
}



// isNonnegativeInteger (STRING s [, BOOLEAN emptyOK])
// Returns true if string s is an integer >= 0.
function isNonnegativeInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isNonnegativeInteger.arguments.length > 1)
        secondArg = isNonnegativeInteger.arguments[1];

    // The next line is a bit byzantine.  What it means is:
    // a) s must be a signed integer, AND
    // b) one of the following must be true:
    //    i)  s is empty and we are supposed to return true for
    //        empty strings
    //    ii) this is a number >= 0

    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s) >= 0) ) );
}



// isNegativeInteger (STRING s [, BOOLEAN emptyOK])
// Returns true if string s is an integer < 0.
function isNegativeInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isNegativeInteger.arguments.length > 1)
        secondArg = isNegativeInteger.arguments[1];

    // The next line is a bit byzantine.  What it means is:
    // a) s must be a signed integer, AND
    // b) one of the following must be true:
    //    i)  s is empty and we are supposed to return true for
    //        empty strings
    //    ii) this is a negative, not positive, number

    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s) < 0) ) );
}



// isNonpositiveInteger (STRING s [, BOOLEAN emptyOK])
// Returns true if string s is an integer <= 0.
function isNonpositiveInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isNonpositiveInteger.arguments.length > 1)
        secondArg = isNonpositiveInteger.arguments[1];

    // The next line is a bit byzantine.  What it means is:
    // a) s must be a signed integer, AND
    // b) one of the following must be true:
    //    i)  s is empty and we are supposed to return true for
    //        empty strings
    //    ii) this is a number <= 0

    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s) <= 0) ) );
}



// isFloat (STRING s [, BOOLEAN emptyOK])
// True if string s is an unsigned floating point (real) number. 
function isFloat (s)

{   var i;
    var seenDecimalPoint = false;

    if (isEmpty(s)) 
       if (isFloat.arguments.length == 1) return defaultEmptyOK;
       else return (isFloat.arguments[1] == true);

    if (s == decimalPointDelimiter) return false;

    // Search through string's characters one by one
    // until we find a non-numeric character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);

        if ((c == decimalPointDelimiter) && !seenDecimalPoint) seenDecimalPoint = true;
        else if (!isDigit(c)) return false;
    }

    // All characters are numbers.
    return true;
}



// isSignedFloat (STRING s [, BOOLEAN emptyOK])
// True if string s is a signed or unsigned floating point 
// (real) number. First character is allowed to be + or -.
function isSignedFloat (s)

{   if (isEmpty(s)) 
       if (isSignedFloat.arguments.length == 1) return defaultEmptyOK;
       else return (isSignedFloat.arguments[1] == true);

    else {
        var startPos = 0;
        var secondArg = defaultEmptyOK;

        if (isSignedFloat.arguments.length > 1)
            secondArg = isSignedFloat.arguments[1];

        // skip leading + or -
        if ( (s.charAt(0) == "-") || (s.charAt(0) == "+") )
           startPos = 1;    
        return (isFloat(s.substring(startPos, s.length), secondArg))
    }
}



// isAlphabetic (STRING s [, BOOLEAN emptyOK])
// Returns true if string s is English letters 
// (A .. Z, a..z) only.
// NOTE: Need i18n version to support European characters.
// This could be tricky due to different character
// sets and orderings for various languages and platforms.
function isAlphabetic (s)
{   
	var i;

    if (isEmpty(s)) 
       if (isAlphabetic.arguments.length == 1) return defaultEmptyOK;
       else return (isAlphabetic.arguments[1] == true);

    // Search through string's characters one by one
    // until we find a non-alphabetic character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is letter.
        var c = s.charAt(i);

        if (!isLetter(c))
        return false;
    }

    // All characters are letters.
    return true;
}



// isAlphanumeric (STRING s [, BOOLEAN emptyOK])
// Returns true if string s is English letters 
// (A .. Z, a..z) and numbers only.
function isAlphanumeric (s)
{
	var i;

    if (isEmpty(s)) 
       if (isAlphanumeric.arguments.length == 1) return defaultEmptyOK;
       else return (isAlphanumeric.arguments[1] == true);

    // Search through string's characters one by one
    // until we find a non-alphanumeric character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number or letter.
        var c = s.charAt(i);

        if (! (isLetter(c) || isDigit(c) ) )
        return false;
    }

    // All characters are numbers or letters.
    return true;
}



// reformat (TARGETSTRING, STRING, INTEGER, STRING, INTEGER ... )       
// Handy function for arbitrarily inserting formatting characters
// or delimiters of various kinds within TARGETSTRING.
function reformat (s)

{   var arg;
    var sPos = 0;
    var resultString = "";

    for (var i = 1; i < reformat.arguments.length; i++) {
       arg = reformat.arguments[i];
       if (i % 2 == 1) resultString += arg;
       else {
           resultString += s.substring(sPos, sPos + arg);
           sPos += arg;
       }
    }
    return resultString;
}



// < ----- Make a modification here, 2001-01-05 ----- *****
// isInternationalPhoneNumber (STRING s [, BOOLEAN emptyOK])
// isInternationalPhoneNumber returns true if string s is a valid 
// international phone number.  Must be digits only; any length OK.
// May be prefixed by + character.
function isPhoneNumber (s)
{   if (isEmpty(s)) 
       if (isPhoneNumber.arguments.length == 1) return defaultEmptyOK;
       else return (isPhoneNumber.arguments[1] == true);
    // return (isPositiveInteger(s))
    return (charsInBag (s, validPhoneChars));
}



// isEmail (STRING s [, BOOLEAN emptyOK])
// Email address must be of form a@b.c -- in other words:
// * there must be at least one character before the @
// * there must be at least one character before and after the .
// * the characters @ and . are both required
function isEmail (s)
{   
	if(s.length==1 && s.charAt(0)=="-") return true;
	if (isEmpty(s)) 
       if (isEmail.arguments.length == 1) return defaultEmptyOK;
       else return (isEmail.arguments[1] == true);
   
    // is s whitespace?
    if (isWhitespace(s)) return false;
    
    // there must be >= 1 character before @, so we
    // start looking at character position 1 
    // (i.e. second character)
    var i = 1;
    var sLength = s.length;

    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }

    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;

    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }

    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}



// isYear (STRING s [, BOOLEAN emptyOK])
// isYear returns true if string s is a valid 
// Year number.  Must be 2 or 4 digits only.
function isYear (s)
{   if (isEmpty(s)) 
       if (isYear.arguments.length == 1) return defaultEmptyOK;
       else return (isYear.arguments[1] == true);
    if (!isNonnegativeInteger(s)) return false;
    return ((s.length == 2) || (s.length == 4));
}



// isIntegerInRange (STRING s, INTEGER a, INTEGER b [, BOOLEAN emptyOK])
// isIntegerInRange returns true if string s is an integer 
// within the range of integer arguments a and b, inclusive.
function isIntegerInRange (s, a, b)
{   if (isEmpty(s)) 
       if (isIntegerInRange.arguments.length == 1) return defaultEmptyOK;
       else return (isIntegerInRange.arguments[1] == true);

    // Catch non-integer strings to avoid creating a NaN below,
    // which isn't available on JavaScript 1.0 for Windows.
    if (!isInteger(s, false)) return false;

    // Now, explicitly change the type to integer via parseInt
    // so that the comparison code below will work both on 
    // JavaScript 1.2 (which typechecks in equality comparisons)
    // and JavaScript 1.1 and before (which doesn't).
    var num = parseInt (s);
    return ((num >= a) && (num <= b));
}

function isFloatInRange(s, a, b)
{   if (isEmpty(s))
       if (isFloatInRange.arguments.length == 1) return defaultEmptyOK;
       else return (isFloatInRange.arguments[1] == true);

    // Catch non-integer strings to avoid creating a NaN below,
    // which isn't available on JavaScript 1.0 for Windows.
    if (!isFloat(s)) return false;

    // Now, explicitly change the type to integer via parseInt
    // so that the comparison code below will work both on
    // JavaScript 1.2 (which typechecks in equality comparisons)
    // and JavaScript 1.1 and before (which doesn't).
    var num = parseFloat (s);
    return ((num >= a) && (num <= b));
}



// isMonth (STRING s [, BOOLEAN emptyOK])
// isMonth returns true if string s is a valid 
// month number between 1 and 12.
function isMonth (s)
{   if (isEmpty(s)) 
       if (isMonth.arguments.length == 1) return defaultEmptyOK;
       else return (isMonth.arguments[1] == true);
    return isIntegerInRange (s, 1, 12);
}



// isDay (STRING s [, BOOLEAN emptyOK])
// isDay returns true if string s is a valid 
// day number between 1 and 31.
function isDay (s)
{   if (isEmpty(s)) 
       if (isDay.arguments.length == 1) return defaultEmptyOK;
       else return (isDay.arguments[1] == true);   
    return isIntegerInRange (s, 1, 31);
}



// daysInFebruary (INTEGER year)
// Given integer argument year,
// returns number of days in February of that year.
function daysInFebruary (year)
{   // February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (  ((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0) ) ) ? 29 : 28 );
}



// isDate (STRING year, STRING month, STRING day)
// isDate returns true if string arguments year, month, and day 
// form a valid date.
function isDate (year, month, day)
{   // catch invalid years (not 2- or 4-digit) and invalid months and days.
    if (! (isYear(year, false) && isMonth(month, false) && isDay(day, false))) return false;

    // Explicitly change type to integer to make code work in both
    // JavaScript 1.1 and JavaScript 1.2.
    var intYear = parseInt(year);
    var intMonth = parseInt(month);
    var intDay = parseInt(day);

    // catch invalid days, except for February
    if (intDay > daysInMonth[intMonth]) return false; 

    if ((intMonth == 2) && (intDay > daysInFebruary(intYear))) return false;

    return true;
}



/* FUNCTIONS TO NOTIFY USER OF INPUT REQUIREMENTS OR MISTAKES. */

// Notify user that required field theField is empty.
// String s describes expected contents of theField.value.
// Put focus in theField and return false.
function warnEmpty (theField, s)
{   theField.focus()
    alert(mPrefix + s + mSuffix)
    return false
}
function warnEmptyInput (theField, s)
{   theField.focus()
    alert("请输入" + s + "。")
    return false
}

function warnEmptySelect (theField, s)
{   theField.focus()
    alert("请选择" + s + "。")
    return false
}

function warnSpecialInput(theField,s)
{
    theField.focus()
    alert(s + "中含有非法字符。")
    return false
}



// Notify user that contents of field theField are invalid.
// String s describes expected contents of theField.value.
// Put select theField, pu focus in it, and return false.
function warnInvalid (theField, s)
{   theField.focus()
    theField.select()
    alert(iPrefix + s + iSuffix)
    return false
}
function warnInvalidInput (theField, s)
{   theField.focus()
    theField.select()
    alert("您输入了无效的" + s + "，请检查输入数据。")
    return false
}

// <----- Add a function here ----- *****
// Notify user that values are not compare
function warnNotCompare (s) {
	alert(cPrefix + s + cSuffix);
	return false;
}



/* FUNCTIONS TO INTERACTIVELY CHECK VARIOUS FIELDS. */

// checkString (TEXTFIELD theField, STRING s, [, BOOLEAN emptyOK==false])
// Check that string theField.value is not all whitespace.
function checkString (theField, s, emptyOK)
{   // Next line is needed on NN3 to avoid "undefined is not a number" error
    // in equality comparison below.
    if (checkString.arguments.length == 2) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (isWhitespace(theField.value)) 
       return warnEmpty (theField, s);
    else return true;
}


// <----- Add a new function here 2001.03.11 ----- *****
function checkInteger (theField, s, emptyOK) {
	
	if (checkInteger.arguments.length == 2) emptyOK = defaultEmptyOK;
	if ((emptyOK == true) && (isEmpty(theField.value))) return true;
	
	if (isWhitespace(theField.value)) {
		return warnEmpty (theField, s);
	} else if (!isInteger (theField.value)) {
		return warnInvalid (theField, s);
	} else return true;
}
//<-------Add 2002.07.28----------
function checkIntegerInRange (theField,begin,end,s, emptyOK) {
	
	if (checkIntegerInRange.arguments.length == 4) emptyOK = defaultEmptyOK;
	if ((emptyOK == true) && (isEmpty(theField.value))) return true;
	
	if (isWhitespace(theField.value)) {
		return warnEmpty (theField, s);
	} else if (!isIntegerInRange(theField.value,begin,end)) {
		return warnInvalid (theField, s);
	} else return true;
}
	

// <----- Add a new function here 2001.01.04 ----- *****
// Check the input float is valid or not
function checkFloat (theField, s, emptyOK) {
	
	if (checkFloat.arguments.length == 2) emptyOK = defaultEmptyOK;
	if ((emptyOK == true) && (isEmpty(theField.value))) return true;
	
	if (isWhitespace(theField.value)) {
		return warnEmpty (theField, s);
	} else if (!isFloat (theField.value)) {
		return warnInvalid (theField, s);
	} else return true;
}

function checkFloatInRange (theField,begin,end,s, emptyOK) {

        if (checkFloatInRange.arguments.length == 4) emptyOK = defaultEmptyOK;
        if ((emptyOK == true) && (isEmpty(theField.value))) return true;
        
        if (isWhitespace(theField.value)) {
                return warnEmpty (theField, s);
        } else if (!isFloatInRange(theField.value,begin,end)) {
                return warnInvalid (theField, s);
        } else return true;
}


// < ----- Make a modification here, 2001-01-05 ----- *****
// checkInternationalPhone (TEXTFIELD theField [, BOOLEAN emptyOK==false])
// Check that string theField.value is a valid International Phone.
function checkPhone (theField, emptyOK)
{   if (checkPhone.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    
	if (isWhitespace(theField.value)) {
		return warnEmpty (theField, sPhone);
    } else {
		if (!isPhoneNumber(theField.value, false)) 
            return warnInvalid (theField, sPhone);
        else return true;
    }
}



// < ----- Make a modification here, 2001-01-05 ----- *****
// checkEmail (TEXTFIELD theField [, BOOLEAN emptyOK==false])
// Check that string theField.value is a valid Email.
function checkEmail (theField, emptyOK)
{   if (checkEmail.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    
    if (isWhitespace(theField.value)) {
		return warnEmpty (theField, sEmail);
    } else if (!isEmail(theField.value, false)) {
        return warnInvalid (theField, sEmail + hEmail);
    } else return true;
}


// Check that string theField.value is a valid Year.
function checkYear (theField, emptyOK)
{   if (checkYear.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isYear(theField.value, false)) 
       return warnInvalid (theField, iYear);
    else return true;
}



// Check that string theField.value is a valid Month.
function checkMonth (theField, emptyOK)
{   if (checkMonth.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isMonth(theField.value, false)) 
       return warnInvalid (theField, iMonth);
    else return true;
}


// Check that string theField.value is a valid Day.
function checkDay (theField, emptyOK)
{   if (checkDay.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (!isDay(theField.value, false)) 
       return warnInvalid (theField, iDay);
    else return true;
}



// checkDate (yearField, monthField, dayField, STRING labelString [, OKtoOmitDay==false])
// Check that yearField.value, monthField.value, and dayField.value 
// form a valid date.
//
// If they don't, labelString (the name of the date, like "Birth Date")
// is displayed to tell the user which date field is invalid.
function checkDate (yearField, monthField, dayField, labelString, OKtoOmitDay)
{   // Next line is needed on NN3 to avoid "undefined is not a number" error
    // in equality comparison below.
    if (checkDate.arguments.length == 4) OKtoOmitDay = false;
    if (!isYear(yearField.value)) return warnInvalid (yearField, iYear);
    if (!isMonth(monthField.value)) return warnInvalid (monthField, iMonth);
    if ( (OKtoOmitDay == true) && isEmpty(dayField.value) ) return true;
    else if (!isDay(dayField.value)) 
       return warnInvalid (dayField, iDay);
    if (isDate (yearField.value, monthField.value, dayField.value))
       return true;
    alert (iDatePrefix + labelString + iDateSuffix)
    return false
}

// <----- Add a new function here 2001.04.13 ----- *****
// Check the Date value in String

function isDateString(field) {
	var inString = field.value;
	var x1 = inString.indexOf('-'); 
	if (x1 != 4) {
		return false;
	}
	var year = inString.substring(0, 4);
	var x2 = inString.indexOf('-', 5); 
	if (x2 == -1) {
		return false;
	}
	
	var month = inString.substring(5, x2);
	var day = inString.substring(x2 + 1);

	return isDate(a1, a2, a3);
}

function checkDateString(theField, s, emptyOK) {
	
    if (checkDateString.arguments.length == 2) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    
    if (isWhitespace(theField.value)) {
		return warnEmpty (theField, s);
    } else if (!isDateString(theField.value, false)) {
        return warnInvalid (theField, s + hDate);
    } else return true;
}

// <----- Add a new function here 2001.01.04 ----- *****
// Check the password value
function checkPasswd (passwd, rePasswd) {
	
	var valuePswd = passwd.value;
	var valueRePswd = rePasswd.value;
	
	var lenPswd = valuePswd.length;
	var lenRePswd = valueRePswd.length;
	
	// check if both field is empty
	if ((lenPswd == 0) && (lenRePswd == 0)) {
		return warnEmpty (passwd, sPasswd);
	}
	if ((lenPswd != lenRePswd) || (valuePswd != valueRePswd)) {
		return warnNotCompare (sPasswd);
	}
/*	if ((lenPswd !=6) || (!isAlphanumeric (valuePswd))){
		return warnInvalid (passwd, sPasswd + hPasswd);
	}*/

	if ((lenPswd <1) || (!isAlphanumeric (valuePswd))){
		return warnInvalid (passwd, sPasswd + hPasswd);
	}

	return true;
}

function checkNumericPasswd(theField, theLength, s, emptyOK) {
    if (checkNumericPasswd.arguments.length == 3) {
	    emptyOK = defaultEmptyOK;
	}
	if (emptyOK && isEmpty(theField.value)) {
	    return true;
	}
	if (isWhitespace(theField.value)) {
	    return warnEmpty(theField, s);
	}
	if ((theField.value.length < theLength) || !isInteger(theField.value)) {
	    return warnInvalid(theField, s + hNumericPasswd);
	}
	return true;
}

// <----- Add a new function here 2001.01.04 ----- *****
// Check the select value is valid or not
function checkSelect (theField, s) {
	
	if (theField.selectedIndex == 0) {
		return warnEmpty (theField, s);
	}

	return true;
}


// <----- Add a new funcition here 2001.03.06 ----- *****
function checkChkBox (theForm, from, redundant, s) {

	var i = 0, l = (theForm.elements.length - redundant);
	for(i = from; i < l; i++) {
		// if one of the checkbox is checked, then return true.
		if (theForm.elements[i].checked == true) return true;
	}
	
	return warnEmpty (theForm.elements[from], s);
	
}


// <----- Add a new function here 2001.03.08 ----- *****
function isConfirm (s) {
	return (confirm(cfPrefix + s + cfSuffix));
}

// <----- Add a new function here 2001.08.14 ----- *****
//convert ' to ''
function convertData(inStr)
{
  var i=0;      
  var tmpStr="";
  var outStr="";            
  for(i=0;i<inStr.length;i++)
  {
    if(inStr.charAt(i)!="'")
    {
      tmpStr=inStr.charAt(i);
    }
    else
    {
      tmpStr="''";
    }             
    outStr=outStr+tmpStr;
  }
  
  return outStr;
}

// <----- Add a new function here 2002.03.13 ----- *****
function checkLength(str){
	len=0;
	for(i=0;i<str.length;i++){
		if(str.charCodeAt(i)<255){
			len=len+0.5;
		}
	}
	return str.length-len;
}

function checkLetterLength(str){
	len=0;
	for(i=0;i<str.length;i++){
		if(str.charCodeAt(i)>255){
			len=len+1;
		}
	}
	return str.length+len;
}
function doSelect(theForm, theName, theValue) {
    var l = theForm.length;
	for (i = 0; i < l; i++ ) {
	    if ((theForm.elements[i].type == "checkbox") && 
		    (theForm.elements[i].value == theName) &&
			(theValue != "") &&
			(theValue != "-")) {
			theForm.elements[i].checked = true;
		}
	}
}

function checkRadio(theFormRadio) {
	var isChecked = false;
	var eleCount = theFormRadio.length;
	for (i=0; i < eleCount; ++i) {
		if(theFormRadio[i].checked){
			isChecked = true;
			break;
		}
	}
	if(isChecked){
		return true;
	}else{
		return false;
	}
}

function isPID(s)
{
    if (isNaN(s.substr(0,17)))
        return false;
    if ((s.length==15)||(s.length==18))
        return true;
    else
        return false;
}
function isZipCode(s)
{
    if (isNaN(s))
        return false;
    if (s.length==6)
        return true;
    else
        return false;
}

// Select or deselect all options
function selectAll(theForm, theCheckBox) {
	var eleCount = theForm.elements.length;
	for (i=0; i < eleCount; ++i) {
		if (theForm.elements[i].type == "checkbox")	{
			theForm.elements[i].checked = theCheckBox.checked;
		}
	}
}

//add by jeff at 02/2004 for ADS: goto data
function chkfm() {
                fm.webcode.value = trim(fm.webcode.value);
                fm.link.value = trim(fm.link.value);
                fm.description.value = trim(fm.description.value);
                fm.startdate.value = trim(fm.startdate.value);
                fm.enddate.value = trim(fm.enddate.value);
                if (fm.webcode.value.length==0) {
                        alert("Please fill in Campaign!");
                        fm.webcode.focus();
                        return false;
                }
		if(fm.sort.selectedIndex == 0) {
			alert("Please select the sort!");
			fm.sort.focus();
			return false;
		}
                if (fm.link.value.length==0) {
                        alert("Please fill in Link!");
                        fm.link.focus();
                        return false;
                }
                if (fm.description.value.length==0) {
                        alert("Please fill in description!");
                        fm.description.focus();
                        return false;
                }
                if (!chkdate(fm.startdate.value)) {
                        alert("Start Date is wrong!");
                        fm.startdate.focus();
                        return false;
                }
                if (!chkdate(fm.enddate.value)) {
                        alert("End Date is wrong!");
                        fm.enddate.focus();
                        return false;
                }
                if (fm.startdate.value>fm.enddate.value) {
                        alert("Start Date > End Date!");
                        fm.startdate.focus();
                        return false;
                }
                return true;
};

function trim(str) {
                var repExp1 = /^ */;
                var repExp2 = / *$/;
                return str.replace(repExp1,'').replace(repExp2,'');
}

function chkdate(str) {
                //date format: yyyy/m(mm)/d(dd)  
                        
                var delim1 = str.indexOf("/");
                var delim2 = str.lastIndexOf("/");
                 
                if (delim1!=4)
                        return false;
                if (delim1!=-1 && delim1==delim2)
                        return false;
                if (delim1!=-1) {
                        var yyyy = parseInt(str.substr(0,delim1),10);
                        var mm = parseInt(str.substr(delim1+1,delim2),10);
                        var dd = parseInt(str.substr(delim2+1,str.length),10);
                }
                if (isNaN(yyyy) || isNaN(mm) || isNaN(dd))
                        return false;
                if (yyyy<1000)
                        return false;
                if (mm<1 || mm>12)   
                        return false;
                if (dd<1 || dd>31)
                        return false;
                return true;
};