var Stil = "Standard";
var Keks = "Layout";
var Tage = 30;
var Log = "Login";

// Style Switcher

function switchStyle(s) {
  if (!document.getElementsByTagName) return; //keine Tags vorhanden?
  var el = document.getElementsByTagName("link"); //Die Stylesheet Verweise werden angesprochen
  for (var i = 0; i < el.length; i++ ) {
    if (el[i].getAttribute("rel").indexOf("style") != -1 && el[i].getAttribute("title")) {
      el[i].disabled = true;					   //alle styles werden ausgeschalten
      if (el[i].getAttribute("title") == s){
	  	 el[i].disabled = false;  //das gewünschte Layout wird eingeschalten
		 }
    }
  }
}

function loadStyle() {
  var c = getStyleCookie();
  if (c && c != Stil) {
    switchStyle(c);
    Stil = c;
  }
}

function setStyle(s) {
  if (s != Stil) {
    switchStyle(s);
	Stil = s;
	setStyleCookie();
  }
}

function loadLogin() {
  var c = getLoginCookie();
  if(c==null){c="Gast";}
  document.getElementById("sali").firstChild.nodeValue = "Sali " + c;
}

window.onload = loadStyle;
//window.onload = loadLogin;


// 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;
	//  alert(unescape(dc.substring(start,stop)));
      return unescape(dc.substring(start,stop));
    }
  }
  return null;
}

function setStyleCookie() {
  setCookie(Keks, Stil, Tage); //Cookie für 30 Tag setzten
}

function setLCookie(daten){
setCookie(Log, daten, Tage); //Cookie für 30 Tag setzten
//Text bei der Begrüssung ändern
document.getElementById("sali").firstChild.nodeValue = 
"Sali " + document.Formular.Eingabe.value;
}

function getStyleCookie() {
  return getCookie(Keks);
}

function getLoginCookie(){
  return getCookie(Log);
}

function delStyleCookie() {
  delCookie(Keks);
}


// Stylesheet für Netscape 4

if(document.layers)
  document.writeln("<link rel='stylesheet' type='text/css' href='/nn4.css' />");