//  ***** Returns If Email Is Valid ***** //
function isValidEmail(str) {
    return (str.indexOf(".") > 0) && (str.indexOf("@") > 0);
}

//  ******* Returns If Integer ******* //
function isInteger(s) {
    var i;
    for (i = 0; i < s.length; i++) {
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    return true;
}

var digits = "0123456789";
var phoneNumberDelimiters = "()-. ";
var validWorldPhoneChars = phoneNumberDelimiters + "+";
var minDigitsInIPhoneNumber = 10;

// ****** Validate International Phone Numbers ****** //
function ValidateInternationalPhone(strPhone) {
    var bracket = 3
    strPhone = trim(strPhone)
    if (strPhone.indexOf("+") > 1) return false
    if (strPhone.indexOf("-") != -1) bracket = bracket + 1
    if (strPhone.indexOf("(") != -1 && strPhone.indexOf("(") > bracket) return false
    var brchr = strPhone.indexOf("(")
    if (strPhone.indexOf("(") != -1 && strPhone.charAt(brchr + 2) != ")") return false
    if (strPhone.indexOf("(") == -1 && strPhone.indexOf(")") != -1) return false
    s = stripCharsInBag(strPhone, validWorldPhoneChars);
    return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}


// ****** Validate Phone Numbers ****** //
function ValidatePhone(strPhone) {

    var bracket = 3
    strPhone = trim(strPhone)
    if (strPhone.indexOf("+") > 1) return false
    if (strPhone.indexOf("-") != -1) bracket = bracket + 1
    if (strPhone.indexOf("(") != -1 && strPhone.indexOf("(") > bracket) return false
    var brchr = strPhone.indexOf("(")
    if (strPhone.indexOf("(") != -1 && strPhone.charAt(brchr + 2) != ")") return false
    if (strPhone.indexOf("(") == -1 && strPhone.indexOf(")") != -1) return false
    s = stripCharsInBag(strPhone, validWorldPhoneChars);
    return (isInteger(s) && s.length == minDigitsInIPhoneNumber);
}

// *********** Validate Zip Code ******* //
function ValidateZipCode(sZip, fiveDigitsOnly){
    return (fiveDigitsOnly)?   (isInteger(sZip) && sZip.length == 5) : isInteger(sZip);
}



// format Phone Number
function formatPhoneNumber(val) {
    temp = stripCharsInBag(val, phoneNumberDelimiters);
    if (temp.length == 10) {
        return temp.substring(0, 3) + "-" + temp.substring(3, 6) + "-" + temp.substring(6, 10);
    } else
        return val;
    
}




// ************* Helper Functions ****************** //

function trim(s) {
    var i;
    var returnString = "";
    for (i = 0; i < s.length; i++) {
        var c = s.charAt(i);
        if (c != " ") returnString += c;
    }
    return returnString;
}
function stripCharsInBag(s, bag) {
    var i;
    var returnString = "";
    for (i = 0; i < s.length; i++) {
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}