// REGULAR EXPRESSION DECLARATIONS
var reAlphanumeric = /^[#a-zA-Z0-9]+$/
var reWhitespace = /^\s+$/
var reAlphabetic = /^[a-zA-Z]+$/
var reInteger = /^\d+$/
var reEmail = /^.+\@.+\..+$/

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

function isWhitespace (s)

{   // Is s empty?
    return (isEmpty(s) || reWhitespace.test(s));
}

function isAlphabetic (s)

{   var i;

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

    else {
       return reAlphabetic.test(s)
    }
}

function isAlphanumeric (s)

{   var i;

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

    else {
       return reAlphanumeric.test(s)
    }
}

function isEmail (s)

{   if (isEmpty(s)) 
       if (isEmail.arguments.length == 1) return false;
       else return (isEmail.arguments[1] == true);
    
    else {
       return reEmail.test(s)
    }
}

function isInteger (s)
{   var i;

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

    return reInteger.test(s)
}

function isUSPhoneNumber (s)
{   if (isEmpty(s)) 
       if (isUSPhoneNumber.arguments.length == 1) return true;
       else return (isUSPhoneNumber.arguments[1] == true);
    return (isInteger(s) && s.length == 10)
}

function checkString (theField, emptyOK)
{   
    if ((emptyOK == true) && (isEmpty(theField.value))) return true;
    if (isWhitespace(theField.value)) {
		return false;   
	}
    else return true;
}

function isSSN (s)
{   if (isEmpty(s)) 
       if (isSSN.arguments.length == 1) return true;
       else return (isSSN.arguments[1] == true);
    return (isInteger(s) && s.length == 9);
}

function isZIPCode (s)
{
  if (isEmpty(s)) 
       if (isZIPCode.arguments.length == 1) return true;
       else return (isZIPCode.arguments[1]);
   return (isAlphanumeric(s) && 
            ((s.length == 5) ||
             (s.length == 6)))
}

function hasWhitespace (s)
{
	return (s.match(/\s/)!=null);
}



function verifyPassword(f)
{
var strMsg;
var strEmptyFields = "";
var strErrors = "";

	if (isEmpty(f.strOldPassword.value)) strEmptyFields += "\tOld Password\n";
	if (f.strNewPassword1.value.length<4) strErrors += "Password must be between at least 4 characters.\n";
	if (f.strNewPassword1.value.length>20) strErrors += "Password must be between less than 20 characters.\n";
	if (!isAlphanumeric(f.strNewPassword1.value)) strErrors += "Password must be alphanumeric.\n";
	
	if (f.strNewPassword1.value != f.strNewPassword2.value) strErrors += "Passwords do not match.\n"
	
	if (!strEmptyFields && !strErrors) return true;
	
	strMsg  = "_________________________________________________________\n\n";
	strMsg += "Your password was not changed because of the following error(s).\n";
	strMsg += "Please correct these error(s) and re-submit.\n";
	strMsg += "_________________________________________________________\n\n";

	if (strEmptyFields)
	{
		strMsg += "- The following required field(s) must be completed:\n" + strEmptyFields + "\n";
		if(strErrors) strMsg += "\n";
	}

	strMsg += strErrors;
	alert(strMsg);
	return false;	

}