// Support Functions
function strip(filter, str)
{
  var i, curChar;
  var retStr = '';
  var len = str.length;
  for(i = 0; i < len; i++){
    curChar = str.charAt(i);
    if(filter.indexOf(curChar) < 0) {
      //not in filter, keep it
      retStr += curChar;
    }
  }
  return retStr;
}

function reformat(str)
{
  var arg;
  var pos = 0;
  var retStr = '';
  var len = reformat.arguments.length;
  for(var i = 1; i < len; i++){
    arg = reformat.arguments[i];
    if(i % 2 == 1) {
      retStr += arg;
    } else {
      retStr += str.substring(pos, pos + arg);
      pos += arg;
    }
  }
  return retStr;
}
//End Support Functions

//Validation Rules
function notEmpty(str)
{
  if(strip(" \n\r\t", str).length == 0) {
    return false;
  } else {
    return true;
  }
}

function validateInteger(str)
{
  str = strip(' \n\r\t', str);
  //remove leading zeros, if any
  while(str.length > 1 && str.substring(0, 1) == '0'){
    str = str.substring(1, str.length);
  }
  var val = parseInt(str);
  if(isNaN(val)){
    return false;
  } else {
    return true;
  }
}

function validateFloat(str)
{
  str = strip(' \n\r\t', str);
  //remove leading zeros, if any
  while(str.length > 1 && str.substring(0, 1) == '0'){
    str = str.substring(1, str.length);
  }
  var val = parseFloat(str);
  if(isNaN(val)){
    return false;
  } else {
    return true;
  }
}

function validateUSPhone(str)
{
  str = strip("*() -./_\n\r\t\\", str);
  if(str.length == 10 || str.length == 7){
    return true;
  } else {
    return false;
  }
}

function validateSSN(str)
{
  str = strip(" -.\n\r\t", str);
  if(validateInteger(str) && str.length == 9){
    return true;
  } else {
    return false;
  }
}

function validateZip(str)
{
  str = strip("- \n\r\t", str);
  if(validateInteger(str) && (str.length == 9 || str.length == 5)) {
    return true;
  } else {
    return false;
  }
}

function validateCC(str, type)
{
  str = strip("-./_\n\r\t\\", str);
  if(type == "1")
    if(str.charAt(0) != "4")
      return false;
  if(type == "2")
    if(str.charAt(0) != "5")
      return false;
  if(type == "3")
    if(str.charAt(0) != "6")
      return false;
  if(type == "4")
    if(str.charAt(0) != "3")
      return false;
  if(validateInteger(str) && ((str.length == 15 && type == "4") || str.length == 16)) {
    return true;
  } else {
    return false;
  }
}

function validateDate(str)
{
  var dateVar = new Date(str);
  if(isNaN(dateVar.valueOf()) || (dateVar.valueOf() == 0)) {
    return false;
  } else {
    return true;
  }
}

function validateEMail(str)
{
  str = strip(" \n\r\t", str);
  if(str.indexOf("@") > -1 && str.indexOf(".") > -1) {
    return true;
  } else {
    return false;
  }
}
//End Validation Rules

//Formatting functions
function formatPhone(str)
{
  str = strip("*() -./_\n\r\t\\", str);
  if(str.length == 10) {
    return reformat(str, "(", 3, ") ", 3, "-", 4);
  }
  if(str.length == 7) {
    return reformat(str, "", 3, "-", 4);
  }
  return str;
}

function formatSSN(str)
{
  str = strip(" -.\n\r\t", str);
  return reformat(str, "", 3, "-", 2, "-", 4);
}

function formatZip(str)
{
  str = strip("- \n\r\t", str);
  if(str.length == 5) {
    return str;
  }
  if(str.length == 9) {
    return reformat(str, "", 5, "-", 4);
  }
  return str;
}

function formatCC(str, type){
  str = strip("-./_\n\r\t\\", str);
  switch(type){
    case "1": 
      return reformat(str, "", 4, "-", 4, "-", 4, "-", 4);
      break;
    case "2": 
      return reformat(str, "", 4, "-", 4, "-", 4, "-", 4);
      break;
    case "3": 
      return reformat(str, "", 4, "-", 4, "-", 4, "-", 4);
      break;
    case "4":
      return reformat(str, "", 4, "-", 6, "-", 5);
  }
  return str;
}

function formatDate(str, style)
{
  var dateVar = new Date(str);
  var year = dateVar.getYear();
  if(year < 10){
    year += 2000;
  }
  if(year < 100){
    year += 1900;
  }
  switch(style){
    case "MM/DD/YY":
      return (dateVar.getMonth() + 1) + "/" + dateVar.getDate() + "/" + year;
      break;
    case "DD/MM/YY":
      return dateVar.getDate() + "/" + (dateVar.getMonth() + 1) + "/" + year;
      break;
    case "Month Day, Year":
      return getMonthName(dateVar) + " " + 
      dateVar.getDate() + ", " + year;
      break;
    case "Day, Month Day, Year":
      return getDayName(dateVar) + ", " + getMonthName(dateVar) + " " + dateVar.getDate() + ", " + year;
      break;
    default:
      return (dateVar.getMonth() + 1) + "/" + dateVar.getDate() + "/" + year;
      break;
  }
  return str;
}
//End Formatting Functions