var digits = "0123456789";
var whitespace = " \t\n\r";
var defaultEmptyOK = false;
var USStateCodeDelimiter = "|";
var USStateCodes = "AL|AK|AS|AZ|AR|CA|CO|CT|DE|DC|FM|FL|GA|GU|HI|ID|IL|IN|IA|KS|KY|LA|ME|MH|MD|MA|MI|MN|MS|MO|MT|NE|NV|NH|NJ|NM|NY|NC|ND|MP|OH|OK|OR|PW|PA|PR|RI|SC|SD|TN|TX|UT|VT|VI|VA|WA|WV|WI|WY|AE|AA|AE|AE|AP"
var ZIPCodeDelimiters = "-";
var validZIPCodeChars = digits + "-";
var digitsInZIPCode1 = 5;
var digitsInZIPCode2 = 9;
var digitsInUSPhoneNumber = 10;
var phoneNumberDelimiters = "()-/ ";
var validUSPhoneChars = digits + phoneNumberDelimiters;

function isEmpty(s) {
   return ((s == null) || (s.length == 0))
}

function isInteger (s) {
   var i;
    if (isEmpty(s)) 
       if (isInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isInteger.arguments[1] == true);
    for (i = 0; i < s.length; i++) {
        var c = s.charAt(i);
        if (!isDigit(c)) return false;
    }
    return true;
}

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

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;
}

function charInString (c, s) {
    for (i = 0; i < s.length; i++) {
        if (s.charAt(i) == c) return true;
    }
    return false
}

function stripInitialWhitespace (s) {
   var i = 0;
   while ((i < s.length) && charInString (s.charAt(i), whitespace))   i++;
   return s.substring (i, s.length);
}

function isWhitespace (s) {
   var i;
    if (isEmpty(s)) return true;
    for (i = 0; i < s.length; i++) {
        var c = s.charAt(i);
        if (whitespace.indexOf(c) == -1) return false;
    }
    return true;
}

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;
}

function reformatZIPCode (ZIPString) {
    if (ZIPString.length == 5) return ZIPString;
    else return (reformat (ZIPString, "", 5, "-", 4));
}


function warnInvalid (theField, s) {
    theField.focus()
    theField.select()
    alert(s)
    return false
}

function isStateCode(s) {
    if (isEmpty(s)) 
       if (isStateCode.arguments.length == 1) return defaultEmptyOK;
       else return (isStateCode.arguments[1] == true);
    if (s.length != 2) return false;
	return ( (USStateCodes.indexOf(s) != -1) &&
             (s.indexOf(USStateCodeDelimiter) == -1) );
}

function checkStateCode (theField, emptyOK) {
    if (checkStateCode.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    {  theField.value = theField.value.toUpperCase();
       if (!isStateCode(theField.value, false)) 
          return warnInvalid (theField, "Please enter a valid State");
       else return true;
    }
}

function isZIPCode (s) {
   if (isEmpty(s)) 
       if (isZIPCode.arguments.length == 1) return defaultEmptyOK;
       else return (isZIPCode.arguments[1] == true);
   return (isInteger(s) && 
            ((s.length == digitsInZIPCode1) ||
             (s.length == digitsInZIPCode2)))
}

function checkZIPCode (theField, emptyOK) {
    if (checkZIPCode.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else {
      var normalizedZIP = stripCharsInBag(theField.value, ZIPCodeDelimiters)
      if (!isZIPCode(normalizedZIP, false)) 
         return warnInvalid (theField, "Please enter a valid Zip Code");
      else {
         theField.value = reformatZIPCode(normalizedZIP)
         return true;
      }
    }
}

function isUSPhoneNumber (s)
{   if (isEmpty(s)) 
       if (isUSPhoneNumber.arguments.length == 1) return defaultEmptyOK;
       else return (isUSPhoneNumber.arguments[1] == true);
    return (isInteger(s) && s.length == digitsInUSPhoneNumber)
}
function reformatUSPhone (USPhone) {
   return (reformat (USPhone, "(", 3, ") ", 3, "-", 4))
}

function checkUSPhone (theField, emptyOK)
{   if (checkUSPhone.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else
    {  var normalizedPhone = stripCharsInBag(theField.value, phoneNumberDelimiters)
       if (!isUSPhoneNumber(normalizedPhone, false)) 
          return warnInvalid (theField, "Please enter a valid Phone Number");
       else {
          theField.value = reformatUSPhone(normalizedPhone)
          return true;
       }
    }
}

function isEmail (s) {
    if (isEmpty(s)) 
       if (isEmail.arguments.length == 1) return defaultEmptyOK;
       else return (isEmail.arguments[1] == true);
    if (isWhitespace(s)) return false;
    var i = 1;
    var sLength = s.length;
	if ((s.indexOf("@") != s.lastIndexOf("@")) || (s.indexOf("@") < 0)) return false;
    while ((i < sLength) && (s.charAt(i) != "@")) {
      i++
    }
    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;
    j = s.lastIndexOf(".");
    if ((i > j) || (j >= sLength - 2)) return false;
    else return true;
}

function checkEmail (theField, emptyOK) {
    if (checkEmail.arguments.length == 1) emptyOK = defaultEmptyOK;
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    else if (!isEmail(theField.value, false)) 
       return warnInvalid (theField, "Please enter a valid Email Address\nor leave blank");
    else return true;
}

function checkRequiredFields(theForm) {
theForm.client_name.value = stripInitialWhitespace(theForm.client_name.value);
theForm.client_phone.value = stripInitialWhitespace(theForm.client_phone.value);
theForm.phone.value = stripInitialWhitespace(theForm.phone.value);
theForm.address.value = stripInitialWhitespace(theForm.address.value);
theForm.city.value = stripInitialWhitespace(theForm.city.value);
theForm.state.value = stripInitialWhitespace(theForm.state.value);
theForm.zip.value = stripInitialWhitespace(theForm.zip.value);

if (theForm.client_name.value.length == 0) {
	warnInvalid(theForm.client_name, "Please enter the Client Name");
	return false;
}
else if (!checkUSPhone(theForm.client_phone)) return false;
	else if (!checkEmail(theForm.email, true)) return false;
		else if (theForm.address.value.length == 0) {
			warnInvalid(theForm.address, "Please enter the Mailing Address");
			return false;
		}
			else if (theForm.city.value.length == 0) {
				warnInvalid(theForm.city, "Please enter the City");
				return false;
			}
				else if (!checkStateCode(theForm.state)) return false;
					else if (!checkZIPCode(theForm.zip)) return false;
						else if (!checkUSPhone(theForm.phone, true)) return false;
}