function bookmark() {

  var ver = navigator.appName;
  var num = parseInt(navigator.appVersion);
  var bmurl="http://www.estatesatsmithcrossing.com/";
  var bmtitle="Estates at Smith Crossing-New Home Community in Knightdale, NC";

//  if (window.external) {
  if ((ver == "Microsoft Internet Explorer")&&(num >= 4)) {
    window.external.AddFavorite(bmurl, bmtitle);
  } else if (document.all) {
    window.external.AddFavorite(bmurl, bmtitle);
  } else if (window.sidebar) {
    window.sidebar.addPanel(bmtitle, bmurl, '');
  } else if (navigator.userAgent.indexOf("Opera") != -1) {
    alert("Press Ctrl-T after closing this message to add Estates at Smith Crossing to your hotlist");
  } else {
    alert("Press Ctrl-D after closing this message to bookmark Estates at Smith Crossing");
  }
}