uaName = navigator.appName;
uaVer = parseInt(navigator.appVersion);
version = "no";
if (uaName == "Netscape" && uaVer >= 3) version = "ok";
if (uaName == "Microsoft Internet Explorer" && uaVer >= 4) version = "ok";
if (version == "ok")
{

ofirmieon = new Image();
ofirmieon.src = "ofirmie2.gif";
ofirmieoff = new Image();
ofirmieoff.src = "ofirmie1.gif";

ofertaon = new Image();
ofertaon.src = "oferta2.gif";
ofertaoff = new Image();
ofertaoff.src = "oferta1.gif";

emailon = new Image();
emailon.src = "email2.gif";
emailoff = new Image();
emailoff.src = "email1.gif";

referencjeon = new Image();
referencjeon.src = "referencje2.gif";
referencjeoff = new Image();
referencjeoff.src = "referencje1.gif";

zapytanieon = new Image();
zapytanieon.src = "zapytanie2.gif";
zapytanieoff = new Image();
zapytanieoff.src = "zapytanie1.gif";

kontakton = new Image();
kontakton.src = "kontakt2.gif";
kontaktoff = new Image();
kontaktoff.src = "kontakt1.gif";

}
function zmiana1(imgName) 
{
  if (version == "ok")
  {
    imgOn = eval(imgName + "off.src");
    document [imgName].src = imgOn;
  }
}
function zmiana2(imgName) 
{
  if (version == "ok")
  {
    imgOff = eval(imgName + "on.src");
    document [imgName].src = imgOff;
  }
}
function selecturl(s) {
	var gourl = s.options[s.selectedIndex].value;	
	window.top.location.href = gourl;
}
function displayWindow(url, width, height) {
	var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=yes,menubar=no' );
}