// Generic Form Validation
// Jacob Hage (jacob@hage.dk)
var checkObjects	= new Array();
var errors		= "";
var returnVal		= false;
var language		= new Array();
language["header"]	= "Se produjeron los siguientes errores:"
language["start"]	= "-";
language["field"]	= " Campo ";
language["require"]	= " requerido";
language["min"]		= " y debe contener al menos ";
language["max"]		= " y no debe contener más de ";
language["minmax"]	= " y no más de ";
language["chars"]	= " caracteres";
language["num"]		= " y debe contener un número";
language["email"]	= " debe contener un correo válido";
// -----------------------------------------------------------------------------
// define - Call this function in the beginning of the page. I.e. onLoad.
// n = name of the input field (Required)
// type= string, num, email (Required)
// min = the value must have at least [min] characters (Optional)
// max = the value must have maximum [max] characters (Optional)
// d = (Optional)
// -----------------------------------------------------------------------------
function define(n, type, HTMLname, min, max, d) {
  var p;
  var i;
  var x;
  if (!d) d = document;
  if ((p=n.indexOf("?"))>0&&parent.frames.length) {
  d = parent.frames[n.substring(p+1)].document;
  n = n.substring(0,p);
  }
  if (!(x = d[n]) && d.all) x = d.all[n];
  for (i = 0; !x && i < d.forms.length; i++) {
  x = d.forms[i][n];
  }
  for (i = 0; !x && d.layers && i < d.layers.length; i++) {
  x = define(n, type, HTMLname, min, max, d.layers[i].document);
  return x;       
  }
  eval("V_"+n+" = new formResult(x, type, HTMLname, min, max);");
  checkObjects[eval(checkObjects.length)] = eval("V_"+n);
}


function formResult(form, type, HTMLname, min, max) {
  this.form = form;
  this.type = type;
  this.HTMLname = HTMLname;
  this.min  = min;
  this.max  = max;
}

function validate() {
  if (checkObjects.length > 0) {
  errorObject = "";
  for (i = 0; i < checkObjects.length; i++) {
  validateObject = new Object();
  validateObject.form = checkObjects[i].form;
  validateObject.HTMLname = checkObjects[i].HTMLname;
  validateObject.val = checkObjects[i].form.value;
  validateObject.len = checkObjects[i].form.value.length;
  validateObject.min = checkObjects[i].min;
  validateObject.max = checkObjects[i].max;
  validateObject.type = checkObjects[i].type;
  if (validateObject.type == "num" || validateObject.type == "string") {
  if ((validateObject.type == "num" && validateObject.len <= 0) || (validateObject.type == "num" && isNaN(validateObject.val))) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['num'] + "\n";
  } else if (validateObject.min && validateObject.max && (validateObject.len < validateObject.min || validateObject.len > validateObject.max)) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['min'] + validateObject.min + language['minmax'] + validateObject.max+language['chars'] + "\n";
  } else if (validateObject.min && !validateObject.max && (validateObject.len < validateObject.min)) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['min'] + validateObject.min + language['chars'] + "\n";
  } else if (validateObject.max && !validateObject.min &&(validateObject.len > validateObject.max)) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + language['max'] + validateObject.max + language['chars'] + "\n";
  } else if (!validateObject.min && !validateObject.max && validateObject.len <= 0) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['require'] + "\n";
    }
  } else if(validateObject.type == "email") {
  // Checking existense of "@" and ".". 
  // Length of must >= 5 and the "." must 
  // not directly precede or follow the "@"
  if ((validateObject.val.indexOf("@") == -1) || (validateObject.val.charAt(0) == ".") || (validateObject.val.charAt(0) == "@") || (validateObject.len < 6) || (validateObject.val.indexOf(".") == -1) || (validateObject.val.charAt(validateObject.val.indexOf("@")+1) == ".") || (validateObject.val.charAt(validateObject.val.indexOf("@")-1) == ".")) { errors += language['start'] + language['field'] + validateObject.HTMLname + language['email'] + "\n"; }
        }
    }
  }
  
  //si se trata de otro formulario esta función no 
  //servitia a menos que los campos y el nombre 
  //del formulario sean iguales
  comprobarClave();
  
  if (errors) {
  alert(language["header"].concat("\n" + errors));
  errors = "";
  returnVal = false;
  } else {
  returnVal = true;
  }
}

function comprobarClave(){
	clave1 = document.formnewuser.txtClave.value
	clave2 = document.formnewuser.txtClave1.value
	
	if (clave1 != clave2){
		errors += language['start'] + " Las contraseñas no coinciden";
  }
 
}

var nav4 = window.Event ? true : false;
function acceptNum(evt){
	// NOTE: Backspace = 8, Enter = 13, '0' = 48, '9' = 57
	var key = nav4 ? evt.which : evt.keyCode;
	return (key <= 13 || (key >= 48 && key <= 57));
}