var Stil = "sf";
var Keks = "FontSize";
var Tage = 30;
// Cookie-Funktionen
 
function setCookie(name, value, expdays) {   // gültig expdays Tage
  var now = new Date();
  var exp = new Date(now.getTime() + (1000*60*60*24*expdays));
  document.cookie = name + "=" + escape(value) + ";" +
                    "expires=" + exp.toGMTString() + ";" +
                    "path=/";
}
 
function delCookie(name) {   // expires ist abgelaufen
  var now = new Date();
  var exp = new Date(now.getTime() - 1);
  document.cookie = name + "=;" +
                    "expires=" + exp.toGMTString() + ";" + 
                    "path=/";
}
 
function getCookie(name) {
  var cname = name + "=";
  var dc = document.cookie;
  if (dc.length > 0) {
    var start = dc.indexOf(cname);
    if (start != -1) {
      start += cname.length;
      var stop = dc.indexOf(";", start);
      if (stop == -1) stop = dc.length;
      return unescape(dc.substring(start,stop));
    }
  }
  return null;
}
 
function setStyleCookie() {
  setCookie(Keks, Stil, Tage);
}
 
function getStyleCookie() {
  return getCookie(Keks);
}
 
function delStyleCookie() {
  delCookie(Keks);
}
 
// Style Switcher
 
function switchStyle(s) {  
  if (!document.getElementsByTagName) return;  
  var el = document.getElementsByTagName("link");  
  for (var i = 0; i < el.length; i++ ) {  
    if (el[i].getAttribute("rel").indexOf("style") != -1 && el[i].getAttribute("title")) {  
      el[i].disabled = true;  
      if (el[i].getAttribute("title") == s) el[i].disabled = false;  
    }  
  }
}  
 
function loadStyle() {  
  var c = getStyleCookie();  
  if (c && c != Stil) {  
    switchStyle(c);  
    Stil = c;  
  }  
}  
 
function setStyle(s) {  
  if (s != Stil) {  
    switchStyle(s);  
    Stil = s;  
  }  
}