A Dynamic Web page example (cont)

function showTeaser() {
 if (navigator.appName == "Netscape") {
  document.layers['teaser'].visibility
                         = "visible"
 } else if (navigator.appName == "Microsoft") {
  document.all['teaser'].style.visibility
                         = "visible"
 } else if (navigator.appName == "Opera") {
   ...
 }
}
...