function Fensterweite () {
  if (window.innerWidth) {
    return window.innerWidth;
  } else if (document.body && document.body.offsetWidth) {
    return document.body.offsetWidth;
  } else {
    return 0;
  }
}


function neuAufbau () {
  if (Weite != Fensterweite())
    location.href = location.href;
}

/* Überwachung von Netscape initialisieren */
if (!window.Weite && window.innerWidth) {
  window.onresize = neuAufbau;
  Weite = Fensterweite();
}

/* Überwachung von Internet Explorer initialisieren */
if (!window.Weite && document.body && document.body.offsetWidth) {
  window.onresize = neuAufbau;
  Weite = Fensterweite();
}

Rand = parseInt((Weite - 980)/2);
if (Rand < 0) {Rand = 0}

document.write("<style type='text/css'>");
document.write("#maincontainer {");
document.write("position: absolute; left: " + Rand + "px;");
document.write("width: " + Weite + "px;");
document.write("} </style>");
document.write("<style type='text/css'>");
document.write("#maincontainerlang {");
document.write("position: absolute; left: " + Rand + "px;");
document.write("width: " + Weite + "px;");
document.write("} </style>");
document.write("<style type='text/css'>");
document.write("#maincontainerslides {");
document.write("position: absolute; left: " + Rand + "px;");
document.write("width: " + Weite + "px;");
document.write("} </style>");