browserName=navigator.appName;
browserVer=parseInt(navigator.appVersion);
if(browserVer >=3) version="3";else version="2";
if (version=="3")
{

City1     =new Image();
City1.src ="images/tirana.jpg";

City1Show = new Image();
City1Show.src="images/city/city1.jpg";

City2Show = new Image();
City2Show.src="images/city/city2.jpg";

City3Show = new Image();
City3Show.src="images/city/city3.jpg";

City4Show = new Image();
City4Show.src="images/city/city4.jpg";

City5Show = new Image();
City5Show.src="images/city/city5.jpg";

City6Show = new Image();
City6Show.src="images/city/city6.jpg"; 

City2     =new Image();
City2.src ="images/tirana.jpg";

City3     =new Image();
City3.src ="images/tirana.jpg";

City4     =new Image();
City4.src ="images/tirana.jpg";

City5     =new Image();
City5.src ="images/tirana.jpg";

City6     =new Image();
City6.src ="images/tirana.jpg";

CityOff = new Image();
CityOff.src = "images/tirana-red.jpg";
}

function doNothing() {
 return 0;
}

function BtnOn(imgName){if (version=="3"){document[imgName].src=eval(imgName + ".src");}}
function BtnOff(imgName){if (version=="3"){document[imgName].src=CityOff.src;}}
function BtnShow(imgName){if (version=="3"){imagename=imgName+"Show.src";document[imgName].src=eval(imagename);}}