if (((navigator.appName == "Netscape")
       && (parseInt(navigator.appVersion) >= 3 ))
       || ((navigator.appName == "Microsoft Internet Explorer")
       && (parseInt(navigator.appVersion) >= 4 ))) {
       version = "supported";
       }
          else {
          version = "notsupported";
       }
if (version == "supported")
{
graphic1 = new Image(); graphic1.src = "/img/btnhome.jpg"; graphic1on = new Image(); graphic1on.src = "/img/btnhomez.jpg";
graphic2 = new Image(); graphic2.src = "/img/newlet.gif"; graphic2on = new Image(); graphic2on.src = "/img/newlet2.gif";
}
function imageChange(imageID2,imageName2) {
if (version == "supported")
{
document.images[imageID2].src = eval(imageName2 + ".src");
}
}