var _ie = document.all ? 1 : 0;
var _ns4 = document.layers ? 1 : 0;
var _dom = ((document.getElementById)&&(!_ie)) ? 1 : 0;
var currentlayer = '';
var currentlayerB = '';

function changeLayer(name)
{
	if(currentlayer != '')
	{
		if (_ie)
			document.all[currentlayer].style.visibility = "hidden";
		else if (_ns4)
			document.layers[currentlayer].visibility = "hide";
		else if (_dom)
		{
			var elm = document.getElementById(currentlayer);
			elm.style.visibility = "hidden";
		}
	}
	currentlayer = name;
	if (_ie)
		document.all[name].style.visibility = "visible";
	else if (_ns4)
		document.layers[name].visibility = "show";
	else if (_dom)
	{
		var elm = document.getElementById(name);
		elm.style.visibility = "visible";
	}
}

function changeLayerB(nameB)
{
	if(currentlayerB != '')
	{
		if (_ie)
			document.all[currentlayerB].style.visibility = "hidden";
		else if (_ns4)
			document.layers[currentlayerB].visibility = "hide";
		else if (_dom)
		{
			var elm = document.getElementById(currentlayerB);
			elm.style.visibility = "hidden";
		}
	}
	currentlayerB = nameB;
	if (_ie)
		document.all[nameB].style.visibility = "visible";
	else if (_ns4)
		document.layers[nameB].visibility = "show";
	else if (_dom)
	{
		var elm = document.getElementById(nameB);
		elm.style.visibility = "visible";
	}
}	

bild1="img/navi/arrow-mo.gif";
bild2="img/navi/arrow-off.gif";
bild3="img/subnavi-arrow-mo.gif";

var stopnr;
var stopname;

		
function change(nr,name)
{
if (nr==stopnr){}
else
this.document.images[nr].src=name
}	


function openwin(file){
	window.open(file, 'Fenster', 'width=550, height=500, location=no, status=no, toolbar=no');
}