<!-- Begin hiding script from older browsers

var url = "http://www.3rddoor.com/";
var title = "Welcome to The 3rd Door!";

function bookMark() {
  if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4)) {
    window.external.AddFavorite(url,title);
  }
  else {
    alert("Don't Forget to Bookmark Us! CTRL + D");
  }
}

// End hiding script from older browsers -->