bName = navigator.appName;
bVer = parseInt(navigator.appVersion);
if (bName == "Netscape" && bVer >= 3) ver = "n3";
else if (bName == "Netscape" && bVer == 2) ver = "n2";
else if (bName == "Microsoft Internet Explorer" && bVer >= 3) ver = "n3";
else if (bName == "Microsoft Internet Explorer" && bVer < 3) ver = "n2";

if (ver != "n2") {
but01off = new Image( );
but01off.src = "im/but01a.jpg";
but01on = new Image ( );
but01on.src = "im/but01.jpg";
but02off = new Image( );
but02off.src = "im/but02a.jpg";
but02on = new Image ( );
but02on.src = "im/but02.jpg";
but03off = new Image( );
but03off.src = "im/but03a.jpg";
but03on = new Image ( );
but03on.src = "im/but03.jpg";
but04off = new Image( );
but04off.src = "im/but04a.jpg";
but04on = new Image ( );
but04on.src = "im/but04.jpg";
but05off = new Image( );
but05off.src = "im/but05a.jpg";
but05on = new Image ( );
but05on.src = "im/but05.jpg";
} else {
but01off = "";
but01on = "";
but02off = "";
but02on = "";
but03off = "";
but03on = "";
but04off = "";
but04on = "";
but05off = "";
but05on = "";
}
function changeImage(imagename,imagesrc) {
if (ver == "n2") return false;
document.images[imagename].src=imagesrc.src;
return true;
}