function isDate(strDate) {
		    // DD/MM/YYYY 

		    var date_Pattern_Leap = /^(((((([0-2][1-9])|([1-3][0-1]))\/(([0][1,3,5,7,8])|([1][0,2])))|((([0-2][1-9])|([1-3][0]))\/(([0][4,6,9])|([1][1])))|((([0-2][1-9])|([1,2][0]))\/(([0][2]))))\/(([1-9][0-9][0-9][0-9])|(([0-9][1-9])|([1-9][0]))))|((((([0-2][1-9])|([1-3][0-1]))(([0][1,3,5,7,8])|([1][0,2])))|((([0-2][1-9])|([1-3][0]))(([0][4,6,9])|([1][1])))|((([0-2][1-9])|([1,2][0]))(([0][2]))))(([1-9][0-9][0-9][0-9])|(([0-0][1-9])|([1-9][0])))))$/i;
		    var date_Pattern_nonLeap = /^((((((([0-2][1-9])|([1-3][0-1]))\/(([0][1,3,5,7,8])|([1][0,2])))|((([0-2][1-9])|([1-3][0]))\/(([0][4,6,9])|([1][1])))|(((([0-1][1-9])|([2][0-8]))|([1,2][0]))\/(([0][2]))))\/(([1-9][0-9][0-9][0-9])|(([0-9][1-9])|([1-9][0])))))|((((([0-2][1-9])|([1-3][0-1]))(([0][1,3,5,7,8])|([1][0,2])))|((([0-2][1-9])|([1-3][0]))(([0][4,6,9])|([1][1])))|(((([0-1][1-9])|([2][1-8]))|([1,2][0]))(([0][2]))))(([1-9][0-9][0-9][0-9])|(([0-9][1-9])|([1-9][0])))))$/i;


		    var date_Pattern = date_Pattern_nonLeap;

		    var str = new String(strDate);

		    var current_date = new Date();
		    var str2 = new String(current_date.getFullYear());
		    var strYear = '';
		    var datePart;
			if (str.length == 10) {
		        var dateSep = /(\/)/;
		        datepart = str.split('/');
		        strYear = datepart[2];
		    } else {
		        return false;
		    }

		    if (eval(strYear % 4) == 0) {
		        date_Pattern = date_Pattern_Leap;
		    } else {
		        date_Pattern = date_Pattern_nonLeap;
		    }

		    if (date_Pattern.test(strDate)) {
		        return true;
		    } else {
		        return false;
		    }
		}



function isNumber(str)
{
   // var str = e.value;
    for (i = 0; i < str.length; i++)
    {
        var c = str.charAt(i);
        if (!isDigit(c))
        {
            return false;
        }
    }
    return true;
}



function isDigit(c)
{
    return ((c >= "0") && (c <= "9"));
}

function isCharacter()
{
    if (event.keyCode >= 33 && event.keyCode <= 126)
        return true;
}


function isRealNumber(s)
{
    var i;
    var seenDecimalPoint = false;
    var decimalPointDelimiter = '.';

    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;
}
function isCurrency(strNum, decimal_len, fraction_len, enableNagative) {

    var currency_Pattern1 = "";
    var decimal_len_group = decimal_len / 3;

    var strNumber = "([1-9][0-9]{0,2})((([,][0-9]{0,3}){0," + eval(decimal_len_group - 1) + "})?)";
    var strNumberNoComma = "([1-9][0-9]{0," + eval(decimal_len - 1) + "})?";
    var strDecimal = "(([.][0-9]{0," + eval(fraction_len) + "})?)";
    var strSign = "";
    if (enableNagative == true) {
        strSign = "([-]{0,1})";
    }

    if (fraction_len > 0) {
        currency_Pattern1 = "^((" + strSign + ")((" + strNumber + ")|(" + strNumberNoComma + "))|([0]))((" + strDecimal + "))$";
    } else {
        currency_Pattern1 = "^((" + strSign + ")((" + strNumber + ")|(" + strNumberNoComma + "))|([0]))$";
    }

    var currency_Pattern = new RegExp(currency_Pattern1);
    return currency_Pattern.test(strNum);

}

function isEmail(emailStr) {
    if (emailStr.length == 0) {
        return true;
    }
    var emailPat = /^(.+)@(.+)$/;
    var specialChars = "\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
    var validChars = "\[^\\s" + specialChars + "\]";
    var quotedUser = "(\"[^\"]*\")";
    var ipDomainPat = /^(\d{1,3})[.](\d{1,3})[.](\d{1,3})[.](\d{1,3})$/;
    var atom = validChars + '+';
    var word = "(" + atom + "|" + quotedUser + ")";
    var userPat = new RegExp("^" + word + "(\\." + word + ")*$");
    var domainPat = new RegExp("^" + atom + "(\\." + atom + ")*$");
    var matchArray = emailStr.match(emailPat);
    if (matchArray == null) {
        return false;
    }
    var user = matchArray[1];
    var domain = matchArray[2];
    if (user.match(userPat) == null) {
        return false;
    }
    var IPArray = domain.match(ipDomainPat);
    if (IPArray != null) {
        for (var i = 1; i <= 4; i++) {
            if (IPArray[i] > 255) {
                return false;
            }
        }
        return true;
    }
    var domainArray = domain.match(domainPat);
    if (domainArray == null) {
        return false;
    }
    var atomPat = new RegExp(atom, "g");
    var domArr = domain.match(atomPat);
    var len = domArr.length;
    if ((domArr[domArr.length - 1].length < 2) ||
        (domArr[domArr.length - 1].length > 3)) {
        return false;
    }
    if (len < 2) {
        return false;
    }
    return true;
}

function isCitizanId(id) {
       if(isNaN(id)) {
               return false;
       }

       if (id.length != 13)
               return false;

       var sum = 0;

       /* x13, x12, x11, ... */ 
       for (i = 0; i < 12; i++)
       {
               sum += parseInt(id.charAt(i)) * (13 - i);
       }

       /* complements(12, sum mod 11) */
       return id.charAt(12) - '0' == ((11 - (sum % 11)) % 10); 
}

function isValidPassword(password) {
	var pattern = /^(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?=.*[^a-zA-Z0-9])(?!.*\s).{8,15}$/;
	
	return pattern.test(password);
}

function isValidMSISDN2FA(msisdn) {
	var pattern = /^0(\d{9})$/;
	
	return pattern.test(msisdn);
}