browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
if (browserName == "Netscape" && browserVer >= 3) version = "n3"; 
else if (browserName == "Microsoft Internet Explorer" && browserVer >= 4) version = "n3";
else version = "n2";
if (version == "n3")
{
	
ok = new Image();
ok.src = "/img/but_ok_off.gif";
ok_on = new Image();
ok_on.src = "/img/but_ok_on.gif";

newsletter = new Image();
newsletter.src = "img/but_chce_newsletter_off.gif";
newsletter_on = new Image();
newsletter_on.src = "img/but_chce_newsletter_on.gif";


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