var BrowserName = navigator.appName;
	var BrowserVer  = parseInt(navigator.appVersion);

	if (	(BrowserName == "Netscape" && BrowserVer >= 3) ||
		(BrowserName == "Microsoft Internet Explorer" && BrowserVer >= 4)  )
		Browser = "v3";
	else
		Browser = "v0";

	if (Browser == "v3")


	{
	xout = new Image();
	xout.src = "images/links/dlaczego_3.gif";
	aout = new Image();
	aout.src = "images/links/firma_3.gif";
	bout = new Image();
	bout.src = "images/links/realizacje_3.gif";
	cout = new Image();
	cout.src = "images/links/oferta_3.gif";
	dout = new Image();
	dout.src = "images/links/kontakt_3.gif";
	eout = new Image();
	eout.src = "images/links/szyldy_1.gif";
	fout = new Image();
	fout.src = "images/links/grafiki_1.gif";
	gout = new Image();
	gout.src = "images/links/kasetony_1.gif";
	hout = new Image();
	hout.src = "images/links/litery_1.gif";
	iout = new Image();
	iout.src = "images/links/tramwaje_1.gif";
	jout = new Image();
	jout.src = "images/links/samochody_1.gif";
	lout = new Image();
	lout.src = "images/links/konstrukcje_1.gif";
	
	
	xon = new Image();
	xon.src = "images/links/dlaczego_2.gif";
	aon = new Image();
	aon.src = "images/links/firma_2.gif";
	bon = new Image();
	bon.src = "images/links/realizacje_2.gif";
	con = new Image();
	con.src = "images/links/oferta_2.gif";
	don = new Image();
	don.src = "images/links/kontakt_2.gif";
	eon = new Image();
	eon.src = "images/links/szyldy_2.gif";
	fon = new Image();
	fon.src = "images/links/grafiki_2.gif";
	gon = new Image();
	gon.src = "images/links/kasetony_2.gif";
	hon = new Image();
	hon.src = "images/links/litery_2.gif";
	ion = new Image();
	ion.src = "images/links/tramwaje_2.gif";
	jon = new Image();
	jon.src = "images/links/samochody_2.gif";
	lon = new Image();
	lon.src = "images/links/konstrukcje_2.gif";
	


	
	}

	function on(Name)
	{
		if (Browser == "v3") 
		{ onit = eval(Name + "on.src");	
		  document.images[Name].src = onit; }
	}
	function out(Name) 
	{
		if (Browser == "v3") 
		{ notonit = eval(Name + "out.src");	
		  document.images[Name].src = notonit; }
}