// Form Validation JavaScript

function EW_onError(form_object, input_object, object_type, error_message)
    {
    alert(error_message);
        if (object_type == "RADIO" || object_type == "CHECKBOX") {
          if (input_object[0])
        input_object[0].focus();
      else
        input_object.focus();
    }
    else
      input_object.focus();
    if (object_type == "TEXT" || object_type == "PASSWORD")
      input_object.select();    
         return false;  
    }


function EW_hasValue(obj, obj_type)
    {
    if (obj_type == "TEXT" || obj_type == "PASSWORD" || obj_type == "TEXTAREA")
  {
      if (obj.value.length == 0) 
          return false;
      else 
          return true;
      }
    else if (obj_type == "SELECT")
  {
    if (obj.selectedIndex == 0)
      return false;
    else
           return true;  
  }   
    else if (obj_type == "RADIO" || obj_type == "CHECKBOX")
  {
        if (obj[0])
    {
      for (i=0; i < obj.length; i++)
          {
      if (obj[i].checked)
        return true;
      }
    }
    else
    {
      if (obj.checked)
        return true;
      else
             return false;  
    }
         return false;  
  }
  }

  
// Date (mm/dd/yyyy)
function EW_checkusdate(object_value)
    {
    if (object_value.length == 0)
        return true;

     isplit = object_value.indexOf('/');

  if (isplit == -1 || isplit == object_value.length)
    return false;

    sMonth = object_value.substring(0, isplit);

  if (sMonth.length == 0)
        return false;

  isplit = object_value.indexOf('/', isplit + 1);

  if (isplit == -1 || (isplit + 1 ) == object_value.length)
    return false;

    sDay = object_value.substring((sMonth.length + 1), isplit);

  if (sDay.length == 0)
        return false;

  sYear = object_value.substring(isplit + 1);

  if (!EW_checkinteger(sMonth)) 
    return false;
  else
  if (!EW_checkrange(sMonth, 1, 12)) 
    return false;
  else
  if (!EW_checkinteger(sYear)) 
    return false;
  else
  if (!EW_checkrange(sYear, 0, 9999)) 
    return false;
  else
  if (!EW_checkinteger(sDay)) 
    return false;
  else
  if (!EW_checkday(sYear, sMonth, sDay))
    return false;
  else
    return true;
    }

  
// Date (yyyy/mm/dd)
function EW_checkdate(object_value)
    {
    if (object_value.length == 0)
        return true;

  isplit = object_value.indexOf('/');

  if (isplit == -1 || isplit == object_value.length)
    return false;

    sYear = object_value.substring(0, isplit);

  isplit = object_value.indexOf('/', isplit + 1);

  if (isplit == -1 || (isplit + 1 ) == object_value.length)
    return false;

    sMonth = object_value.substring((sYear.length + 1), isplit);
  
  if (sMonth.length == 0)
        return false;

  sDay = object_value.substring(isplit + 1);
  
  if (sDay.length == 0)
        return false;

  if (!EW_checkinteger(sMonth)) 
    return false;
  else
  if (!EW_checkrange(sMonth, 1, 12)) 
    return false;
  else
  if (!EW_checkinteger(sYear)) 
    return false;
  else
  if (!EW_checkrange(sYear, 0, 9999)) 
    return false;
  else
  if (!EW_checkinteger(sDay)) 
    return false;
  else
  if (!EW_checkday(sYear, sMonth, sDay))
    return false;
  else
    return true;
    }


// Date (dd/mm/yyyy)
function EW_checkeurodate(object_value)
    {
    if (object_value.length == 0)
        return true;

  isplit = object_value.indexOf('/');

  if (isplit == -1)
  {
    isplit = object_value.indexOf('.');
  }

  if (isplit == -1 || isplit == object_value.length)
    return false;

    sDay = object_value.substring(0, isplit);

  monthSplit = isplit + 1;

  isplit = object_value.indexOf('/', monthSplit);

  if (isplit == -1)
  {
    isplit = object_value.indexOf('.', monthSplit);
  }

  if (isplit == -1 ||  (isplit + 1 )  == object_value.length)
    return false;

    sMonth = object_value.substring((sDay.length + 1), isplit);

  sYear = object_value.substring(isplit + 1);

  if (!EW_checkinteger(sMonth)) 
    return false;
  else
  if (!EW_checkrange(sMonth, 1, 12)) 
    return false;
  else
  if (!EW_checkinteger(sYear)) 
    return false;
  else
  if (!EW_checkrange(sYear, 0, null)) 
    return false;
  else
  if (!EW_checkinteger(sDay)) 
    return false;
  else
  if (!EW_checkday(sYear, sMonth, sDay)) 
    return false;
  else
    return true;
    }



function EW_checkday(checkYear, checkMonth, checkDay)
    {

  maxDay = 31;

  if (checkMonth == 4 || checkMonth == 6 ||
      checkMonth == 9 || checkMonth == 11)
    maxDay = 30;
  else
  if (checkMonth == 2)
  {
    if (checkYear % 4 > 0)
      maxDay =28;
    else
    if (checkYear % 100 == 0 && checkYear % 400 > 0)
      maxDay = 28;
    else
      maxDay = 29;
  }

  return EW_checkrange(checkDay, 1, maxDay); 
    }



function EW_checkinteger(object_value)
    {
    if (object_value.length == 0)
        return true;

  var decimal_format = ".";
  var check_char;

  check_char = object_value.indexOf(decimal_format)
    if (check_char < 1)
  return EW_checknumber(object_value);
    else
  return false;
    }



function EW_numberrange(object_value, min_value, mavalue)
    {
    if (min_value != null)
  {
        if (object_value < min_value)
    return false;
  }

    if (mavalue != null)
  {
  if (object_value > mavalue)
    return false;
  }
  
    return true;
    }



function EW_checknumber(object_value)
    {
    if (object_value.length == 0)
        return true;

  var start_format = " .+-0123456789";
  var number_format = " .0123456789";
  var check_char;
  var decimal = false;
  var trailing_blank = false;
  var digits = false;

  check_char = start_format.indexOf(object_value.charAt(0))
  if (check_char == 1)
      decimal = true;
  else if (check_char < 1)
    return false;
        
  for (var i = 1; i < object_value.length; i++)
  {
    check_char = number_format.indexOf(object_value.charAt(i))
    if (check_char < 0)
      return false;
    else if (check_char == 1)
    {
      if (decimal)
        return false;
      else
        decimal = true;
    }
    else if (check_char == 0)
    {
      if (decimal || digits)  
        trailing_blank = true;
    }
      else if (trailing_blank)
      return false;
    else
      digits = true;
  }  

    return true
    }



function EW_checkrange(object_value, min_value, mavalue)
    {
    if (object_value.length == 0)
        return true;

    if (!EW_checknumber(object_value))
  {
  return false;
  }
    else
  {
  return (EW_numberrange((eval(object_value)), min_value, mavalue));
  }
  
    return true;
    }



function EW_checktime(object_value)
    {
    if (object_value.length == 0)
        return true;

  isplit = object_value.indexOf(':');

  if (isplit == -1 || isplit == object_value.length)
    return false;

    sHour = object_value.substring(0, isplit);
  iminute = object_value.indexOf(':', isplit + 1);

  if (iminute == -1 || iminute == object_value.length)
    sMin = object_value.substring((sHour.length + 1));
  else
    sMin = object_value.substring((sHour.length + 1), iminute);

    if (!EW_checkinteger(sHour))
    return false;
    else
    if (!EW_checkrange(sHour, 0, 23)) 
    return false;

  if (!EW_checkinteger(sMin))
    return false;
  else
  if (!EW_checkrange(sMin, 0, 59))
    return false;

    if (iminute != -1)
  {
    sSec = object_value.substring(iminute + 1);

    if (!EW_checkinteger(sSec))
      return false;
    else
    if (!EW_checkrange(sSec, 0, 59))
      return false;  
  }
    
    return true;
    }
    


function EW_checkphone(object_value)
    {
    if (object_value.length == 0)
        return true;
    
    if (object_value.length != 12)
        return false;

    if (!EW_checknumber(object_value.substring(0,3)))
    return false;
    else
  if (!EW_numberrange((eval(object_value.substring(0,3))), 100, 1000))
    return false;

  if (object_value.charAt(3) != "-" && object_value.charAt(3) != " ")
        return false

    if (!EW_checknumber(object_value.substring(4,7)))
    return false;
    else
  if (!EW_numberrange((eval(object_value.substring(4,7))), 100, 1000))
    return false;
  
  if (object_value.charAt(7) != "-" && object_value.charAt(7) != " ")
        return false;

  if (object_value.charAt(8) == "-" || object_value.charAt(8) == "+")
        return false;
  else
  {
    return (EW_checkinteger(object_value.substring(8,12)));
  }
    }


function EW_checkzip(object_value)
    {
    if (object_value.length == 0)
        return true;
    
    if (object_value.length != 5 && object_value.length != 10)
        return false;

  if (object_value.charAt(0) == "-" || object_value.charAt(0) == "+")
        return false;

  if (!EW_checkinteger(object_value.substring(0,5)))
    return false;

  if (object_value.length == 5)
    return true;
  
  if (object_value.charAt(5) != "-" && object_value.charAt(5) != " ")
        return false;

  if (object_value.charAt(6) == "-" || object_value.charAt(6) == "+")
        return false;

  return (EW_checkinteger(object_value.substring(6,10)));
    }


function EW_checkcreditcard(object_value)
    {
  var white_space = " -";
  var creditcard_string="";
  var check_char;

    if (object_value.length == 0)
        return true;

  for (var i = 0; i < object_value.length; i++)
  {
    check_char = white_space.indexOf(object_value.charAt(i))
    if (check_char < 0)
      creditcard_string += object_value.substring(i, (i + 1));
  }  

    if (creditcard_string.length == 0)
        return false;   
     
  if (creditcard_string.charAt(0) == "+")
        return false;

  if (!EW_checkinteger(creditcard_string))
    return false;

  var doubledigit = creditcard_string.length % 2 == 1 ? false : true;
  var checkdigit = 0;
  var tempdigit;

  for (var i = 0; i < creditcard_string.length; i++)
  {
    tempdigit = eval(creditcard_string.charAt(i))

    if (doubledigit)
    {
      tempdigit *= 2;
      checkdigit += (tempdigit % 10);

      if ((tempdigit / 10) >= 1.0)
      {
        checkdigit++;
      }

      doubledigit = false;
    }
    else
    {
      checkdigit += tempdigit;
      doubledigit = true;
    }
  }  
  return (checkdigit % 10) == 0 ? true : false;
    }


function EW_checkssc(object_value)
    {
  var white_space = " -+.";
  var ssc_string="";
  var check_char;

    if (object_value.length == 0)
        return true;

    if (object_value.length != 11)
        return false;

  if (object_value.charAt(3) != "-" && object_value.charAt(3) != " ")
        return false;

  if (object_value.charAt(6) != "-" && object_value.charAt(6) != " ")
        return false;
   
  for (var i = 0; i < object_value.length; i++)
  {
    check_char = white_space.indexOf(object_value.charAt(i))
    if (check_char < 0)
      ssc_string += object_value.substring(i, (i + 1));
  }  

    if (ssc_string.length != 9)
        return false;   
     
  if (!EW_checkinteger(ssc_string))
    return false;

  return true;
    }
  

function EW_checkemail(object_value)
  {
    if(!(object_value.indexOf("@") > -1 && object_value.indexOf(".") > -1))
         return false;    

  return true;
  }
  

// GUID {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}  
function EW_checkGUID(object_value)
  {
  if (object_value.length == 0)
        return true;
  if (object_value.length != 38)
        return false;
  if (object_value.charAt(0)!="{")
    return false;
  if (object_value.charAt(37)!="}")
    return false;  

  var heformat = "0123456789abcdefABCDEF";
  var check_char;  

  for (var i = 1; i < 37; i++)
  {    
    if ((i==9)||(i==14)||(i==19)||(i==24)) {
      if (object_value.charAt(i)!="-")
        return false;
    } else {
      check_char = heformat.indexOf(object_value.charAt(i));
      if (check_char < 0)
        return false;
    }
  }
  return true;
  }