var browserName = navigator.appName;
var browserVersion = parseInt(navigator.appVersion);
var browser;

function closeLayer ()
{
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;

  if (GECKO)
       {document.getElementById('stoerer').style.display='none';}
  else if (NS)
       {document.layers['stoerer'].display='none';}
  else if (IE)
       {document.all['stoerer'].style.display='none';}
}

function openLayer ()
{
  var GECKO = document.getElementById? 1:0 ;
  var NS = document.layers? 1:0 ;
  var IE = document.all? 1:0 ;

  if (GECKO)
       {document.getElementById('stoerer').style.display='block';}
  else if (NS)
       {document.layers['stoerer'].display='block';}
  else if (IE)
       {document.all['stoerer'].style.display='block';}
}

if (browserName == "Microsoft Internet Explorer" && browserVersion == 4 && navigator.appVersion.indexOf("MSIE 5.5") != -1) {

} else if (browserName == "Microsoft Internet Explorer" && browserVersion == 4 && navigator.appVersion.indexOf("MSIE 6") != -1) {

} else {
	window.setTimeout(openLayer, 1);	
}