if  (version >= 2) {
	butt1a 	= new Image();
	butt1a.src="images/nav/butt1a.gif";
	butt1b 	= new Image();
	butt1b.src="images/nav/butt1b.gif";
	butt2a 	= new Image();
	butt2a.src="images/nav/butt2a.gif";
	butt2b 	= new Image();
	butt2b.src="images/nav/butt2b.gif";
	butt3a 	= new Image();
	butt3a.src="images/nav/butt3a.gif";
	butt3b 	= new Image();
	butt3b.src="images/nav/butt3b.gif";
	butt4a 	= new Image();
	butt4a.src="images/nav/butt4a.gif";
	butt4b 	= new Image();
	butt4b.src="images/nav/butt4b.gif";
	butt5a 	= new Image();
	butt5a.src="images/nav/butt5a.gif";
	butt5b 	= new Image();
	butt5b.src="images/nav/butt5b.gif";
	}

	function aktiv(nummer)
	{
	if (version >= 2)	{
		document["butt"+nummer].src="images/nav/butt"+nummer+"b.gif";
	}	}

	function deaktiv(nummer)
	{
	if (version >= 2)	{
		document["butt"+nummer].src="images/nav/butt"+nummer+"a.gif";
	}	}

	function baktiv(nummer)
	{
	if (version >= 2)	{
		document["bablank_"+nummer].src="images/bablank_w.gif";
	}	}

	function bdeaktiv(nummer)
	{
	if (version >= 2)	{
		document["bablank_"+nummer].src="images/bablank_gr.gif";
	}	}


	if (document.layers) { con = 1;}
	if (document.all) { con = 2;}
	if (document.getElementById) { con = 3;}


	if (con==1) { window.captureEvents(Event.CLICK);
                window.onClick = all_hide; }



	function show(name)	{ if ((version >= 3) && (parent.fertig == 1)) {
							if (con==1){ all_hide(); document.layers[name].visibility = "show";}
						  	if (con==2){ all_hide(); document.all[name].style.visibility = "visible";}
						  	if (con==3){ all_hide(); document.getElementById(name).style.visibility = "visible";}
						}
	}
	function hide(name) { if ((version >= 3) && (parent.fertig == 1)) {
							if (con==1){ all_hide(); document.layers[name].visibility = "hide";}
						  	if (con==2){ all_hide(); document.all[name].style.visibility = "hidden";}
						  	if (con==3){ all_hide(); document.getElementById(name).style.visibility = "hidden";}
						}
	}
	function all_hide()	{ if ((version >= 3) && (parent.fertig == 1)) {
							if (con==1)
								{for (i=0; i<=2; i++) { document.layers["menu"+i].visibility = "hide"; } }
							if (con==2)
							{for (i=0; i<=2; i++) { document.all["menu"+i].style.visibility = "hidden"; } }
							if (con==3)
							{for (i=0; i<=2; i++) { document.getElementById("menu"+i).style.visibility = "hidden"; } }

						 deaktiv('1'); deaktiv('2'); deaktiv('3'); deaktiv('4'); deaktiv('5');
						}
	}
	function randomImage(imgArr)
	{
	  var imgSrc, imgW, imgH, r;
	  r = randomNumber(imgArr.length / 3);

	  imgSrc = imgArr[r * 3];
	  imgW = imgArr[(r * 3)+1];
	  imgH = imgArr[(r * 3)+2];

	  document.write('<IMG SRC='+imgSrc+' WIDTH='+imgW+' HEIGHT='+imgH+' border=0 usemap="#Map">');
	}
	function randomNumber(limit){
	  return Math.floor(Math.random()*limit);
	}