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

var digitsInZIPCode1 = 5
var digitsInZIPCode2 = 9
var defaultEmptyOK = true

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

function stripWhitespace (s)

{   return stripCharsInBag (s, whitespace)
}

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 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;
}

function Trim(string)
{
 var newStr = "";
 newStr = RTrim(LTrim(string));
 return (newStr);	
}

function LTrim(string)
{
 var oldStr = string;
 var newStr = "";
 var notDone = true;
 for (i = 0;  i < oldStr.length;  i++)
 {
   ch = oldStr.charAt(i);
   if (ch==" " && notDone)
   {
    // remove spaces 
   }
   else
   {
	newStr = newStr + ch;
	notDone = false;
   }
 }
 return (newStr);	
}
function RTrim(string)
{
 var oldStr = string;
 var newStr = "";
 var notDone = true;
 for (i = oldStr.length-1;  i >= 0;  i--)
 {
   ch = oldStr.charAt(i);
   if (ch==" " && notDone)
   {
    // remove spaces 
   }
   else
   {
	newStr = ch + newStr;
	notDone = false;
   }
 }
 return (newStr);	
}

strNameInvalid ="!@#$%^&*()_+|\={}][:;<>?/`~1234567890"
strJobtitleInvalid = "!@#$%^&*()_+|\={}][:;<>?`~"
strCompanyInvalid = "!@#$%^*()_+|\={}][:;<>?/`~"

strNamevalid ="' , . -"
strJobtitlevalid ="/ ' , . -1234567890"
strComapnyvalid ="& ' , . -1234567890"

function isValidName (s,strType)
{   var i;
	var p;
    var strInvalid;
    var strValid;
    var intValidcount;
    var intAlphaNumeric;
    var validChar;
    
    if (strType == 'firstname' || strType == 'lastname'){strInvalid = strNameInvalid; strValid = strNamevalid;}
    if (strType == 'jobtitle'){strInvalid = strJobtitleInvalid; strValid = strJobtitlevalid;}
    if (strType == 'company'){strInvalid = strCompanyInvalid; strValid = strComapnyvalid;}
        
    if (isWhitespace(s)) {
		return false;
	}
	
	 intValidcount =0;
	 intAlphaNumeric = 0;
	 
    for (i = 0; i < s.length; i++)
    {   
        for (p = 0; p < strInvalid.length; p++)
        {
			if (s.charAt(i) == strInvalid.charAt(p)||s.charAt(i) == '"'||s.charAt(i) == '\\') {
				return false;
			}
        }
        validChar = false;
        
        for (p = 0; p < strValid.length; p++)
        {
			if (s.charAt(i) == strValid.charAt(p)) {
			    intValidcount = intValidcount + 1
			    validChar = true;
			}
		}
        if (!validChar || isInteger(s.charAt(i))){intAlphaNumeric = intAlphaNumeric + 1;}
        
    }
    
    
   if (intValidcount == s.length){return false;}
      
   for (p = 0; p < strValid.length; p++){
	 if (strType == 'firstname' && s.length == 1){
		if (s.charAt(0) == strValid.charAt(p)){return false;}
	 }
	 
	 if (strType == 'lastname' && s.length == 2){
		if (s.charAt(0) == strValid.charAt(p) || s.charAt(1) == strValid.charAt(p)){return false;}
	 }
	 
  }
		
	if (strType == 'firstname' && s.length > 1 && intAlphaNumeric < 1){return false;}
	if (strType == 'lastname' && s.length > 2 && intAlphaNumeric < 2){return false;}
	if (strType == 'jobtitle' && s.length >= 2 && intAlphaNumeric < 2){return false;}
  	if (strType == 'company' && s.length >= 2 && intAlphaNumeric < 2){return false;}
  	
    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 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;
	
	while ((i < sLength) && (s.charAt(i) != " ") && (s.charAt(i) != ","))
    	{ i++
    	}
	if ((s.charAt(i) == " ") || (s.charAt(i) == ",")) {
		return false;
	}

	i = 1
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }

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

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

	if (s.charAt(i) == "@") {
		return false;
	}

    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}
function IsMyAcctConfirmPhoneValid(phone){

	if (phone.length!=12 || !isDigit(phone.charAt(0))|| !isDigit(phone.charAt(1)) || !isDigit(phone.charAt(2)) || !isDigit(phone.charAt(4)) || !isDigit(phone.charAt(5)) || !isDigit(phone.charAt(6)) || !isDigit(phone.charAt(8)) || !isDigit(phone.charAt(9)) || !isDigit(phone.charAt(10)) || !isDigit(phone.charAt(11)) || phone.charAt(3)!="-"||phone.charAt(7)!="-")
	{
		return false;
	}
	return true;
}
function isDigit (c)
{   return ((c >= "0") && (c <= "9"))
}
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 isURL(strURL) 
{	
	var i = 1;
    var sLength = strURL.length;
    var strLastThree
	
	if (isEmpty(strURL)) {
		return false;
	}
       
	if (isWhitespace(strURL)) {
		return false;
	}
    
    while ((i < sLength) && (strURL.charAt(i) != ","))
    { i++
    }
    
    if (strURL.charAt(i) == ",") {
		return false;
	}
    
    i = 1;
    while ((i < sLength) && (strURL.charAt(i) != "."))
    { i++
    }

    if ((i >= sLength) || (strURL.charAt(i) != ".")) {
		return false;
	}
    else {
		i += 2;
	}

    while ((i < sLength) && (strURL.charAt(i) != "."))
    { i++
    }
    if ((i >= sLength - 1) || (strURL.charAt(i) != ".")) {
		return false;
	}
	i++
	strLastThree = strURL.substring (i);
	strLastThree = strLastThree.toUpperCase();

	return true;
}

function textCounter(field, countfield, maxlimit) {
	if (field.value.length > maxlimit) // if too long...trim it!
		field.value = field.value.substring(0, maxlimit);
	// otherwise, update 'characters left' counter
	else 
		countfield.value = maxlimit - field.value.length;
	}

function nextFocus(currentfield, nextfield, maxlength){
	if(currentfield.value.length == maxlength)
    	nextfield.focus()
	}
	
function isFloat(s){
	
	var parts = s.split(".");
	
	if (parts.length == 1 && isInteger(parts[0]))
		return true;
	else if (parts.length == 2 && isInteger(parts[0]) && isInteger(parts[1]))
		return true;
	else
		return false;
	}

function isDollarValue(s){
	
	if ( s.charAt(0) != "$" )
		return false;
	
	if ( !isFloat( s.substring(1) )	)
		return false;
		
	return true;
	} 
	
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

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 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strMonth=dtStr.substring(0,pos1)
	var strDay=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		//alert("The date format should be : mm/dd/yyyy")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		//alert("Please enter a valid month")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		//alert("Please enter a valid day")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		//alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		//alert("Please enter a valid date")
		return false
	}
return true
}