// ----------------------------------------------------------------------
//           FormCheq.js (c) ChaTo (i.am/chato) 1998
//              basado en FormChek.js (c) Eric Krock 1997 Netscape Corp.
//		Modificado por QbErT! (Ricardo@Lemus.com)
// ----------------------------------------------------------------------
// Rutinas para verificacion de formularios, basado en FormChek.js
// ---------------------------------------------------------------------- 

var defaultEmptyOK = false
var digits = "0123456789";
var lowercaseLetters = "abcdefghijklmnopqrstuvwxyzáéíóúñü"
var uppercaseLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZÁÉÍÓÚÑ"
var whitespace = " \t\n\r";
var phoneChars = "()-+ ";
var mMessage = "Error: no puede dejar este espacio vacio"
var pPrompt = "Error: ";
var pAlphanumeric = "ingrese un texto que contenga solo letras y/o numeros";
var pAlphabetic   = "ingrese un texto que contenga solo letras";
var pInteger = "ingrese un numero entero";
var pNumber = "ingrese un numero";
var pPhoneNumber = "ingrese un número de teléfono";
var pEmail = "ingrese una dirección de correo electrónico válida";
var pName = "ingrese un texto que contenga solo letras, numeros o espacios";

function makeArray(n) {
   for (var i = 1; i <= n; i++) {
      this[i] = 0
   } 
   return this
}

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

function isWhitespace (s)
{   var i;
    if (isEmpty(s)) return true;
    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        // si el caracter en que estoy no aparece en whitespace,
        // entonces retornar falso
        if (whitespace.indexOf(c) == -1) return false;
    }
    return true;
}

function isNotWhitespace (s)
{
    if (isWhitespace(s)) return false;
    return true;
}

function stripCharsInBag (s, bag)
{   var i;

    var returnString = "";

    // Buscar por el string, si el caracter no esta en "bag", 
    // agregarlo a returnString
    for (i = 0; i < s.length; i++)
    {   var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function stripCharsNotInBag (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 stripWhitespace (s)
{   return stripCharsInBag (s, whitespace) }

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 isLetter (c)
{
    return( ( uppercaseLetters.indexOf( c ) != -1 ) ||
            ( lowercaseLetters.indexOf( c ) != -1 ) )
}

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

function isLetterOrDigit (c)
{   return (isLetter(c) || isDigit(c)) }

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( i != 0 ) {
            if (!isDigit(c)) return false;
        } else { 
            if (!isDigit(c) && (c != "-") || (c == "+")) return false;
        }
    }
    return true;
}


function isNumber (s)
{   var i;
    var dotAppeared;
    dotAppeared = false;
    if (isEmpty(s)) 
       if (isNumber.arguments.length == 1) return defaultEmptyOK;
       else return (isNumber.arguments[1] == true);

    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if( i != 0 ) {
            if ( c == "." ) {
                if( !dotAppeared )
                    dotAppeared = true;
                else
                    return false;
            } else     
                if (!isDigit(c)) return false;
        } else { 
            if ( c == "." ) {
                if( !dotAppeared )
                    dotAppeared = true;
                else
                    return false;
            } else     
                if (!isDigit(c) && (c != "-") || (c == "+")) return false;
        }
    }
    return true;
}

function isAlphabetic (s)
{   var i;
    if (isEmpty(s)) 
       if (isAlphabetic.arguments.length == 1) return defaultEmptyOK;
       else return (isAlphabetic.arguments[1] == true);
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is letter.
        var c = s.charAt(i);
        if (!isLetter(c))
        return false;
    }
    return true;
}

function isAlphanumeric (s)
{   var i;

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

    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if (! (isLetter(c) || isDigit(c) ) )
        return false;
    }
    return true;
}

function isName (s)
{
    if (isEmpty(s)) 
       if (isName.arguments.length == 1) return defaultEmptyOK;
       else return (isAlphanumeric.arguments[1] == true);
    return( isAlphanumeric( stripCharsInBag( s, whitespace ) ) );
}

function isPhoneNumber (s)
{   var modString;
    if (isEmpty(s)) 
       if (isPhoneNumber.arguments.length == 1) return defaultEmptyOK;
       else return (isPhoneNumber.arguments[1] == true);
    modString = stripCharsInBag( s, phoneChars );
    return (isInteger(modString))
}

function isEmail (s)
{   if (isEmpty(s)) 
       if (isEmail.arguments.length == 1) return defaultEmptyOK;
       else return (isEmail.arguments[1] == true);
   
    // is s whitespace?
    if (isWhitespace(s)) return false;
    
    // there must be >= 1 character before @, so we
    // start looking at character position 1 
    // (i.e. second character)
    var i = 1;
    var sLength = s.length;

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

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

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

    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}
function isNice(s)
{
        var i = 1;
        var sLength = s.length;
        var b = 1;
        while(i<sLength) {
                if( (s.charAt(i) == "\"") || (s.charAt(i) == "'" ) ) b = 0;
                i++;
        }
        return b;
}

function statBar (s)
{   window.status = s }

function warnEmpty (theField,msg)
{   theField.focus()
    //alert(mMessage)
    alert(msg)
    statBar(mMessage)
    return false
}

function warnInvalid (theField, s)
{   theField.focus()
    //theField.select() // Para que funcione en Explorer hay que comentarlo
    alert(s)
    statBar(pPrompt + s)
    return false
}

function checkField (theField, theFunction, emptyOK, s)
{   
var msg;
if (checkField.arguments.length < 3) emptyOK = defaultEmptyOK;
if (checkField.arguments.length == 4) {
	msg = s;
} else {
if( theFunction == isAlphabetic ) msg = pAlphabetic;
if( theFunction == isAlphanumeric ) msg = pAlphanumeric;
if( theFunction == isInteger ) msg = pInteger;
if( theFunction == isNumber ) msg = pNumber;
if( theFunction == isEmail ) msg = pEmail;
if( theFunction == isPhoneNumber ) msg = pPhoneNumber;
if( theFunction == isName ) msg = pName;
}
if ((emptyOK == true) && (isEmpty(theField.value))) return true;
if ((emptyOK == false) && (isEmpty(theField.value))) 
	return warnEmpty(theField,msg);

if ( !isNice(theField.value)) 
	return warnInvalid(theField, "No puede utilizar simbolos extranos ni comillas aqui");

if (theFunction(theField.value) == true) 
	return true;
else
	return warnInvalid(theField,msg);
}

function checkSelect (theField,s)
{
	if( theField.selectedIndex <= 0 )
	{
          if (s) warnInvalid(theField, s);
          return(false);
	}
	return true;	
}

function checkRadio (theField,s)
{
  for (var i = 0; i < eval(theField.length ); i++) 
  {
    if (eval(theField[i].checked))
    {
      return true;
    }
  }
  eval( theField[0].focus);
  return warnInvalid(eval(theField[0]), s);
}

function retorna_radio (theField)
{
  var retorno='';
  for (var i = 0; i < eval(theField+'.length'); i++)
  {
    if (eval(theField+'['+i+'].checked'))
    {
      retorno=eval(theField+'['+i+'].value');
      break;
    }
  }
  return retorno;
}
function esDigito(sChr){
var sCod = sChr.charCodeAt(0);
return ((sCod > 47) && (sCod < 58));
}

function valSep(oTxt){
var bOk = false;
bOk = bOk || ((oTxt.value.charAt(2) == "-") && (oTxt.value.charAt(5) == "-"));
bOk = bOk || ((oTxt.value.charAt(2) == "/") && (oTxt.value.charAt(5) == "/"));
return bOk;
}

function finMes(oTxt){
var nMes = parseInt(oTxt.value.substr(3, 2), 10);
var nRes = 0;
switch (nMes){
case 1: nRes = 31; break;
case 2: nRes = 29; break;
case 3: nRes = 31; break;
case 4: nRes = 30; break;
case 5: nRes = 31; break;
case 6: nRes = 30; break;
case 7: nRes = 31; break;
case 8: nRes = 31; break;
case 9: nRes = 30; break;
case 10: nRes = 31; break;
case 11: nRes = 30; break;
case 12: nRes = 31; break;
}
return nRes;
}

function valDia(oTxt){
var bOk = false;
var nDia = parseInt(oTxt.value.substr(0, 2), 10);
bOk = bOk || ((nDia >= 1) && (nDia <= finMes(oTxt)));
return bOk;
}

function valMes(oTxt){
var bOk = false;
var nMes = parseInt(oTxt.value.substr(3, 2), 10);
bOk = bOk || ((nMes >= 1) && (nMes <= 12));
return bOk;
}

function valAno(oTxt){
var bOk = true;
var nAno = oTxt.value.substr(6);
bOk = bOk && ((nAno.length == 2) || (nAno.length == 4));
if (bOk){
for (var i = 0; i < nAno.length; i++){
bOk = bOk && esDigito(nAno.charAt(i));
}
}
return bOk;
}

function valFecha(oTxt){
var bOk = true;
if (oTxt.value != ""){
bOk = bOk && (valAno(oTxt));
bOk = bOk && (valMes(oTxt));
bOk = bOk && (valDia(oTxt));
bOk = bOk && (valSep(oTxt));
if (!bOk){
alert("Fecha inv\u00e1lida");
oTxt.value = "";
oTxt.focus();
}
}
}

function verifyrut(rut)
{
	var regNum = /[-]?[0-9]*\.?[0-9]+/;
	var rutFull = rut;						
	var rutDiv = rutFull.split("-");
	var rut = rutDiv[0];
	var dv = rutDiv[1];
	if(rutFull.length>2 && rut.match(regNum) && rutDiv[1]){	  
		if(dv){
			var dvr = '0'
			var midv= dv.toUpperCase()
			suma = 0
			mul  = 2
			for (i= rut.length-1; i >= 0; i--){
				suma = suma + parseInt(rut.charAt(i)) * mul
				if (mul == 7)
					mul = 2
				else
					mul++
			}
			res = suma % 11
			if (res == 1  || midv=="K") {
				dvr = 'k'
			}else{
				if (res == 0) {
					dvr = '0'
				}else {
					dvi = 11 - res
					dvr = dvi + ""
				}
			}
			
			if ( dvr != midv.toLowerCase() ){ 
				alert('Porfavor ingresa rut valido ej: 12345678-0');
				return false; 
			}else{ 
				return true; 
			}
			
		}else{
			alert('Porfavor ingresa rut valido ej: 12345678-0');
			return false;
		}
	}else{		
		alert('Porfavor ingresa rut valido ej: 12345678-0');
		return false;
	}
}
// Devuelve Unix timestamp de una fecha MySQL en formato YYYY-MM-DD
//function mysqldate_to_unix_timestamp($date) {

//list($year, $month, $day) = explode('-', format_date( $date) );
//return mktime(0, 0, 0, $month, $day, $year);
//}