// JavaScript Documentvar 
window.onload = function() {
document.getElementById('eins').style.display = 'block';
}



function vor() {
	

if ((document.getElementById('eins').style.display == 'block') 
		&& (document.getElementById('zwei').style.display == 'none')
		&& (document.getElementById('drei').style.display == 'none'))
	{
		document.getElementById('eins').style.display = 'none';
		document.getElementById('zwei').style.display = 'block';
		document.getElementById('drei').style.display = 'none';
	} 
else if ((document.getElementById('eins').style.display == 'none') 
		&& (document.getElementById('zwei').style.display == 'block') 
		&& (document.getElementById('drei').style.display == 'none')) 
	{
		document.getElementById('eins').style.display = 'none';
		document.getElementById('zwei').style.display = 'none';
		document.getElementById('drei').style.display = 'block';
	} 
else if ((document.getElementById('eins').style.display == 'none') 
		&& (document.getElementById('zwei').style.display == 'none') 
		&& (document.getElementById('drei').style.display == 'block')) 
	{
		document.getElementById('eins').style.display = 'block';
		document.getElementById('zwei').style.display = 'none';
		document.getElementById('drei').style.display = 'none';
	} 
	else document.getElementById('eins').style.display == 'block'
}

function zurck() {
if ((document.getElementById('eins').style.display == 'block') 
		&& (document.getElementById('zwei').style.display == 'none')
		&& (document.getElementById('drei').style.display == 'none'))
	{
		document.getElementById('eins').style.display = 'none';
		document.getElementById('zwei').style.display = 'none';
		document.getElementById('drei').style.display = 'block';
	} 
else if ((document.getElementById('eins').style.display == 'none') 
		&& (document.getElementById('zwei').style.display == 'block') 
		&& (document.getElementById('drei').style.display == 'none')) 
	{
		document.getElementById('eins').style.display = 'block';
		document.getElementById('zwei').style.display = 'none';
		document.getElementById('drei').style.display = 'none';
	} 
else if ((document.getElementById('eins').style.display == 'none') 
		&& (document.getElementById('zwei').style.display == 'none') 
		&& (document.getElementById('drei').style.display == 'block')) 
	{
		document.getElementById('eins').style.display = 'none';
		document.getElementById('zwei').style.display = 'block';
		document.getElementById('drei').style.display = 'none';
	} 
}


function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }}

function swap(objId,x,stl,wrt) { 
  var obj = null; 
  with (document){
   if (getElementById)
  obj = getElementById(objId); }
  if (obj){
 
    eval("obj.style."+stl+"='"+wrt+"'");
  }
}