/*
function setActiveStyleSheet(title) {
var i, a, main;
var listo = 0;
 
algo = title;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
algo += " " + i;
a.disabled = true;
if(a.getAttribute("title") == title){
algo += " false";
listo = 1;
a.disabled = false;
}
}
}
 
if(listo == 0) {
document.getElementsByTagName("link")[6].disabled = false;
}
}
*/
 
function setActiveStyleSheet(title) {
var i, a, main;
var listo = 0;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
a.disabled = true;
if(a.getAttribute("title") == title){
listo = 1;
a.disabled = false;
}
}
}
if(listo == 0) {
document.getElementsByTagName("link")[0].disabled = false;
}
 
var title = getActiveStyleSheet();
createCookie("style", title, 365);
}
 
function getActiveStyleSheet() {
var i, a;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) {
//alert(a.getAttribute("title"));
return a.getAttribute("title");
}
}
return null;
}
 
function getPreferredStyleSheet() {
var i, a;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if(a.getAttribute("rel").indexOf("style") != -1
&& a.getAttribute("rel").indexOf("alt") == -1
&& a.getAttribute("title")
) return a.getAttribute("title");
}
return null;
}
 
function createCookie(name,value,days) {
if (days) {
var date = new Date();
date.setTime(date.getTime()+(days*24*60*60*1000));
var expires = "; expires="+date.toGMTString();
}
else expires = "";
document.cookie = name+"="+value+expires+"; path=/";
}
 
function readCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
 
//window.onload = function(e) {
//var cookie = readCookie("style");
//var title = cookie ? cookie : getPreferredStyleSheet();
//setActiveStyleSheet(title);
 
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
//alert(title)
setActiveStyleSheet(title);
//}
 
 
/*window.onunload = function(e) {
var title = getActiveStyleSheet();
createCookie("style", title, 365);
}*/
 
function estiloMenos() {
    estiloActual = getActiveStyleSheet();
    //alert(estiloActual)
    numEstiloActual = (estiloActual.substring(5,6)*1);
    if (numEstiloActual!=1){
        numEstilo = numEstiloActual - 1;
        nombreEstilo ="style" + numEstilo;        
        setActiveStyleSheet(nombreEstilo, 1);
    }   
}

function estiloMas() {
    estiloActual = getActiveStyleSheet();
    //alert(estiloActual)
    numEstiloActual = (estiloActual.substring(5,6) * 1);
    //alert(numEstiloActual)
    if (numEstiloActual!=6){
        numEstilo = numEstiloActual + 1;
        nombreEstilo ="style" + numEstilo;        
        setActiveStyleSheet(nombreEstilo, 1);
    }
}

/*
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
//setActiveStyleSheet(title);
*/