//validar targeta de crèdit 
function ValidarTJ(numero_tarjeta) {
	 var cadena = numero_tarjeta.toString();
	 var longitud = cadena.length;
	 var cifra = null;
	 var cifra_cad=null;
	 var suma=0;
	 for (var i=0; i < longitud; i+=2){
	   cifra = parseInt(cadena.charAt(i))*2;
	   if (cifra > 9){ 
	     	cifra_cad = cifra.toString();
	     	cifra = parseInt(cifra_cad.charAt(0)) + 
			parseInt(cifra_cad.charAt(1));
	    }
	   suma+=cifra;
	  }
	 for (var i=1; i < longitud; i+=2){
	   suma += parseInt(cadena.charAt(i));
	 }				
	 if ((suma % 10) == 0){ 
	  return 1;
	 } else {
	  return 0;
	 }
}
   
/***************************************************************************************/

//funcio que mou l'hora del rellotge
function mueveReloj(){ 
    momentoActual = new Date(); 
    var hora=0;
    hora = momentoActual.getHours(); 
    minuto = momentoActual.getMinutes(); 
    //segundo = momentoActual.getSeconds(); 
	
    if (hora < 10){ hora= "0" + hora;}
    if (minuto < 10){ minuto= "0" + minuto;}
    //if (segundo < 10){ segundo= "0" + segundo;}
    
    //horaImprimible = hora + ":" + minuto + ":" + segundo ;
    horaImprimible = hora + ":" + minuto + "h" ;

    document.form_reloj.reloj.value = horaImprimible;
    
    setTimeout("mueveReloj()",1000);
}

/***************************************************************************************/

//cookies
var expDays = 30;
var exp = new Date(); 
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

function getCookieVal (offset) { 
	var endstr = document.cookie.indexOf (";", offset); 
	if (endstr == -1) 
		endstr = document.cookie.length; 
		return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) { 
	var arg = name + "="; 
	var alen = arg.length; 
	var clen = document.cookie.length; 
	var i = 0; 
	while (i < clen) { 
	var j = i + alen; 
	if (document.cookie.substring(i, j) == arg) 
	return getCookieVal (j); 
	i = document.cookie.indexOf(" ", i) + 1; 
	if (i == 0) break; 
	} 
	return null;
}

function SetCookie (name, value) { 
	var argv = SetCookie.arguments; 
	var argc = SetCookie.arguments.length; 
	var expires = (argc > 2) ? argv[2] : null; 
	var path = (argc > 3) ? argv[3] : null; 
	var domain = (argc > 4) ? argv[4] : null; 
	var secure = (argc > 5) ? argv[5] : false; 
	document.cookie = name + "=" + escape (value) + 
	((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
	((path == null) ? "" : ("; path=" + path)) + 
	((domain == null) ? "" : ("; domain=" + domain)) + 
	((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) { 
	var exp = new Date(); 
	exp.setTime (exp.getTime() - 1); 
	var cval = GetCookie (name); 
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}
	
/***************************************************************************************/

//popups
function show(nom){
    winnom=window.open (nom,"politicaprivacitat","scrollbars=yes,status=no,width=500,height=350")
}
function show2(nom){
    winnom=window.open (nom,"seguretatweb","scrollbars=yes,status=no,width=500,height=350")
}
function show3(nom){
    winnom=window.open (nom,"avislegal","scrollbars=yes,status=no,width=500,height=350")
}



/*****************************************************************************************************/

//desplegables menu

var empezar = false;
var anclas = new Array ("anclaa1","anclaa2","anclaa3","anclaa4","anclaa5","anclaa6","anclaa7","anclaa8");
var capas = new Array("ee1","ee2","ee3","ee4","ee5","ee6","ee7","ee8");
var retardo;
var ocultar;

function muestra(capa){
	xShow(capa);
}
function oculta(capa){
	xHide(capa);
}
function posiciona (){
	for (i=0;i<capas.length;i++){
		posx= xOffsetLeft(anclas[i])
		posy= xOffsetTop (anclas[i])
		xMoveTo(capas[i],posx+18,posy+34)
	}
}

window.onload = function() {
	posiciona()
	mueveReloj()
	empezar = true
}
window.onresize = function() {
	posiciona()
}

function muestra_coloca(capa){
 if (empezar){
	for (i=0;i<capas.length;i++){
		if (capas[i] != capa) xHide(capas[i])
	}
	clearTimeout(retardo)
	xShow(capa)
 }
}

function oculta_retarda(capa){
 if (empezar){
	ocultar =capa
	clearTimeout(retardo)
	retardo = setTimeout("xHide('" + ocultar + "')",200)
 }
}

function muestra_retarda(ind){
 if (empezar){
	clearTimeout(retardo)
 }
}