addEvent(window, "load", init, true);

var rbHeight = 0;

function init() {
  var el = document.getElementById("switch");
  if (!el) return;
  addEvent(el, "click", loadRueckblick, true);
}

function loadRueckblick() {
  var rb = document.getElementById("rueckblick");
  rbHeight = rb.offsetHeight;
  rb.style.visibility="visible";
  rb.style.position="relative";
  rb.style.height = 0;

  var sw = document.getElementById("switch");
  sw.style.display = "none";
  fadeIn();
}


function fadeIn() {
  var rb = document.getElementById("rueckblick");
  var currentHeight = rb.offsetHeight;
  if (currentHeight < rbHeight) {
    var unterschied = rbHeight - currentHeight;
    var wachstum = Math.round(unterschied * 0.1);
    if (wachstum < 1) wachstum = 1;
    rb.style.height = (rb.offsetHeight + wachstum) + "px";
    setTimeout("fadeIn()", 30);
  }
}