function bookmark() {
  var ver = navigator.appName;
  var num = parseInt(navigator.appVersion);
  var bmurl="http://www.rossconstructioninc.com";
  var bmtitle="Ross Construction - Building Quality Homes in the Triangle - Raleigh, NC";
  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 Ross Construction to your favorites");
  } else {
    alert("Press Ctrl-D after closing this message to bookmark Ross Construction");
  }
}


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) {
		menu_about_over = newImage("images/menu-about-over.jpg");
		menu_portfolio_over = newImage("images/menu-portfolio-over.jpg");
		menu_communites_over = newImage("images/menu-communites-over.jpg");
		menu_available_over = newImage("images/menu-available-over.jpg");
		menu_land_over = newImage("images/menu-land-over.jpg");
		preloadFlag = true;
	}
}

// captcha routine to set a new image when visitor clicks on 'Refresh Image' link
function captchaRefresh() {
  document.getElementById('captcha').src = document.getElementById('captcha').src + '?' + (new Date()).getMilliseconds();
}