var SeccionRojo = false;

function CargarFichero( Nombre ){
  var xmlHttp;
  try{
  // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
  }catch (e){
  // Internet Explorer
    try{
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }catch (e){
      try{
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }catch (e){
        alert("Your browser does not support AJAX!");
        return false;
      }
    }
  }
  
  xmlHttp.onreadystatechange=function(){
    if(xmlHttp.readyState==4){
      document.getElementById("Contenido").innerHTML = xmlHttp.responseText;
      window.scrollTo(0,0);
    }
  }  
  
  xmlHttp.open("GET","Include_s/"+Nombre,true);
  xmlHttp.setRequestHeader("Content-Type", "text/plain;charset=ISO-8859-1");
  xmlHttp.send(null);
}

function setActiveStyleSheet(title) {
  var i, a, main;
  var Aux = title.split("Rojo");
  var Titulo = title;
  if (SeccionRojo && Aux.length == 1 && title!=EstiloAnterior){ Titulo += "Rojo"; }

  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") == Titulo) a.disabled = false;
    }
  }
  //Quitar
  if (Aux.length == 1){
    if (title != "TNR"){
      document.getElementById("Actual").innerHTML = title;
    }else{
      document.getElementById("Actual").innerHTML = "Times New Roman";
    }

    if (title == "Webdings") {
      TimerIDDestacado = setTimeout("DesActivarWi()", TimerInterval);
    }else{
      EstiloAnterior = title;
    }
    var Aux2 = Titulo.split("Rojo");
    if (Aux2.length == 1) SeccionRojo = false;
  }else{
    SeccionRojo = true;
  }
}

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) 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 ? "Verdana" : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

function DesActivarWi(){
  if (SeccionRojo){ setActiveStyleSheet(EstiloAnterior + "Rojo"); }
  else {setActiveStyleSheet(EstiloAnterior);}
}

function MarcarVisitado(ID){
  document.getElementById(ID).className = "Visitado";
}

var TimerIDWi = 0;
var TimerInterval = 5000;
var EstiloAnterior = "";

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