function close_layerT() {
  document.getElementById('layerT').style.display = "none";
}


function show_layerT(){		
  var sekunden = 60*60;  // 60 Minuten
  if(document.cookie.search('layer_reload=block') <= 0)
  {		
    document.getElementById('layerT').style.display = "block";
    var cend = new Date();
    var reload = cend.getTime() + ( sekunden * 1000);
    cend.setTime(reload);
    document.cookie = "layer_reload=block; expires=" + cend.toGMTString();
  }
}