function adjustFooter() {
  var menu = document.getElementById("menu");
  var menuH = menu.clientHeight;
  
  //var headerH = 116;
  var headerH = 134;
  
  //if (menuH>50) headerH = 236;
  if (menuH>50) headerH = 254;
  
  var footerH = 36;
  
  var contentH = getViewportHeight() - headerH - footerH;
  
  var content = document.getElementById("content");
  if (content.clientHeight < contentH) content.style.height = contentH;
  
  var lang = document.getElementById("sprachumschalter2");
  var langY = getViewportHeight() - lang.clientHeight - 50;
  lang.style.top = langY;
}


function getViewportHeight() {
  var height = 0;
  
  if (typeof window.innerWidth!='undefined') {
    height = window.innerHeight;
  }
  else if (typeof document.documentElement!='undefined' && typeof document.documentElement.clientHeight!='undefined' && document.documentElement.clientHeight!=0) {
    height = document.documentElement.clientHeight;
  }
  else {
    height = document.getElementsByTagName('body')[0].clientHeight
  }

  return height;
}