// browser test:

browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
version="n2"
if (browserName == "Netscape" && browserVer >= 3) version = "n3";
if (navigator.appName.substring(0,9) == "Microsoft" && browserVer >= 4) version = "n3";
if (version == "n3") {

A = new Image();
A.src = "pic/pl/o_firmie.jpg";
A_on = new Image();
A_on.src = "pic/pl/over/o_firmie.jpg";

B = new Image();
B.src = "pic/pl/oferta.jpg";
B_on = new Image();
B_on.src = "pic/pl/over/oferta.jpg";

C = new Image();
C.src = "pic/pl/technologia.jpg";
C_on = new Image();
C_on.src = "pic/pl/over/technologia.jpg";

D = new Image();
D.src = "pic/pl/katalog.jpg";
D_on = new Image();
D_on.src = "pic/pl/over/katalog.jpg";

E = new Image();
E.src = "pic/pl/dystrybucja.jpg";
E_on = new Image();
E_on.src = "pic/pl/over/dystrybucja.jpg";

F = new Image();
F.src = "pic/pl/kontakt.jpg";
F_on = new Image();
F_on.src = "pic/pl/over/kontakt.jpg";
}

function img_act(imgName) {
if (version == "n3") { 
imgOn = eval(imgName + '_on.src');
document [imgName].src= imgOn
}
}

function img_inact(imgName) {
if (version == "n3") {
imgOff = eval(imgName + ".src");
document [imgName].src= imgOff
}
}