browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion);
if (browser_name == "Netscape" && browser_version >= 3.0)
{
version = "ok";
}
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 3.0)
{
version = "ok";
}
else
{
version = "bad";
}
if (version == "ok") {

 firmaon = new Image();
 firmaon.src="images/index/firma1.gif";
 firmaoff = new Image();
 firmaoff.src="images/index/firma.gif";

 ofertaon = new Image();
 ofertaon.src="images/index/oferta1.gif";
 ofertaoff = new Image();
 ofertaoff.src="images/index/oferta.gif";

 brukarstwoon = new Image();
 brukarstwoon.src="images/index/brukarstwo1.gif";
 brukarstwooff = new Image();
 brukarstwooff.src="images/index/brukarstwo.gif";
 
 kontakton = new Image();
 kontakton.src="images/index/kontakt1.gif";
 kontaktoff = new Image();
 kontaktoff.src="images/index/kontakt.gif";

 wiecejon = new Image();
 wiecejon.src="images/index/wiecej1.gif";
 wiecejoff = new Image();
 wiecejoff.src="images/index/wiecej.gif";

 

 

 function imgact(imgName) {
   if (version == "ok")
   {
     imgOn = eval(imgName + "on.src");
     document [imgName].src = imgOn;
   }
 }


 function imgnoact(imgName) {
   if (version == "ok")
   {
     imgOff = eval(imgName + "off.src");
     document [imgName].src = imgOff;
   }
 }

}