var Stil = "Standard";

var Keks = "Layout";

var Tage = 30;



// 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;

  }

}



window.onload = loadStyle;





// 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);

}