function bookmark() {
  if (window.external) {
    window.external.AddFavorite(location.href, 'Gresham Crossing new home community near Oxford, NC');
  }
  else if (navigator.userAgent.indexOf("Opera") != -1) {
    alert("Press Ctrl-T after closing this message to add Gresham Crossing to your hotlist");
  }
  else if (navigator.appName == "Netscape") {
  	alert("Press Ctrl-D after closing this message to bookmark Gresham Crossing");
  }
}

function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}

function changeImages() {
  if (document.images && (preloadFlag == true)) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
}

var preloadFlag = false;
function preloadImages() {
  if (document.images) {
    main_button_over = newImage("images/main-button-over.jpg");
    location_button_over = newImage("images/location-button-over.jpg");
    community_button_over = newImage("images/community-button-over.jpg");
    builder_button_over = newImage("images/builder-button-over.jpg");
    sitemap_button_over = newImage("images/sitemap-button-over.jpg");
    thehomes_button_over = newImage("images/thehomes-button-over.jpg");
    contact_button_over = newImage("images/contact-button-over.jpg");
    preloadFlag = true;
  }
}
