browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

if (browserName == "Netscape" && browserVer >= 3) version="ok";
else if (browserName == "Microsoft Internet Explorer" && browserVer >= 4) version="ok";
else version="no";

if (version == "ok") {

m1 = new Image();
m1.src = "images/bt_chlodnie_off.gif";
m1_on = new Image();
m1_on.src = "images/bt_chlodnie_on.gif";

m2 = new Image();
m2.src = "images/bt_izolacja_off.gif";
m2_on = new Image();
m2_on.src = "images/bt_izolacja_on.gif";

m3 = new Image();
m3.src = "images/bt_nadwozia_off.gif";
m3_on = new Image();
m3_on.src = "images/bt_nadwozia_on.gif";



m4 = new Image();
m4.src = "images/bt_sm_chlodnie_off.gif";
m4_on = new Image();
m4_on.src = "images/bt_sm_chlodnie_on.gif";

m5 = new Image();
m5.src = "images/bt_sm_izolacja_off.gif";
m5_on = new Image();
m5_on.src = "images/bt_sm_izolacja_on.gif";

m6 = new Image();
m6.src = "images/bt_sm_nadwozia_off.gif";
m6_on = new Image();
m6_on.src = "images/bt_sm_nadwozia_on.gif";



m7 = new Image();
m7.src = "images/bt_sub_chlodnie_off.gif";
m7_on = new Image();
m7_on.src = "images/bt_sub_chlodnie_on.gif";

m8 = new Image();
m8.src = "images/bt_sub_izotermy_off.gif";
m8_on = new Image();
m8_on.src = "images/bt_sub_izotermy_on.gif";

m9 = new Image();
m9.src = "images/bt_sub_kontenery_off.gif";
m9_on = new Image();
m9_on.src = "images/bt_sub_kontenery_on.gif";





}

function img_over(obrazek) {
if (version == "ok") {
document[obrazek].src = eval(obrazek + "_on.src");
}
}

function img_out(obrazek) {
if (version == "ok") {
document[obrazek].src = eval(obrazek + ".src");
}
}

//Preload buttonów podmiany
function preload() {
  if (!document.images) return;
  var ar = new Array();
  var arguments = preload.arguments;
  for (var i = 0; i < arguments.length; i++) {
    ar[i] = new Image();
    ar[i].src = arguments[i];
  }
}


//Otwieranie okienka popup
var win = null;
function okienko(mypage,myname,w,h,scroll){
LeftPosition = 10;
TopPosition = 10;
settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable'
win = window.open(mypage,myname,settings)
}