//funci� per fer gran o petita la lletra

var tamanyoBody = 0.8;

function fijarTamanyo(tamanyo) {
    setCookie("tamanyoLetra", tamanyo, 100, "/");
    tamanyoTexto = tamanyo + "em";
    obj = document.getElementById('wrapper');
    obj.style.fontSize = tamanyoTexto;
}

function aumentarTamanyo() {
    var tamanyo = getCookie("tamanyoLetra");
    if (tamanyo == null) {
        tamanyo = tamanyoBody + 0.05;
    } else if (tamanyo < 1.4) {
        tamanyo = eval(tamanyo) + 0.05;
    }
    fijarTamanyo(tamanyo);
}

function disminuirTamanyo() {
    var tamanyo = getCookie("tamanyoLetra");
    if (tamanyo == null) {
        tamanyo = tamanyoBody - 0.05;
    } else if (tamanyo > 0.4) {
        tamanyo = eval(tamanyo) - 0.05;
    }
    fijarTamanyo(tamanyo);
}

function iniciarTamanyo() {
    var tamanyo = getCookie("tamanyoLetra");
    if (tamanyo == null) {
        tamanyo = tamanyoBody;
    }
    fijarTamanyo(tamanyo);
}

function reestablecerTamanyo() {
    var tamanyo = tamanyoBody;
    fijarTamanyo(tamanyo);
}

function setCookie(name, value, days, path, domain, secure) {
    var expires, date;
    if (typeof days == "number") {
        date = new Date;
        date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000);
        expires = date.toGMTString();
    }
    document.cookie = name + "=" + escape(value) + (expires ? "; expires=" + expires : "") + (path ? "; path=" + path : "") + (domain ? "; domain=" + domain : "") + (secure ? "; secure" : "");
}

function getCookie(name) {
    var nameq = name + "=";
    var c_ar = document.cookie.split(";");
    for (var i = 0; i < c_ar.length; i++) {
        var c = c_ar[i];
        while (c.charAt(0) == " ") {
            c = c.substring(1, c.length);
        }
        if (c.indexOf(nameq) == 0) {
            return unescape(c.substring(nameq.length, c.length));
        }
    }
    return null;
}


function deleteCookie(name, path, domain) {
    if (getCookie(name)) {
        document.cookie = name + "=" + (path ? "; path=" + path : "") + (domain ? "; domain=" + domain : "") + "; expires=Thu, 01-Jan-70 00:00:01 GMT";
    }
}
 
 function validarEnviarMail(a, b)
 {
     var c = a + b;
    
    
    if (document.forms[0].resultat.value == c)
    {
      return true;
    } else {

      alert("El formulari no s'ha validat... segur que saps sumar?");
      return false;
    }
 }
 
 function nouPeu (id, contingut)
 {
   document.write('<span class="per_imprimir" id="peu_'+id+'"><span class="peu_pagina">'+[id]+'.</span> '+contingut+'</span>');
   new Tip(id, contingut);
 }