// preload navigation images:

        if (document.images) {

		about_on = new Image();
		about_on.src = "images/royden/about_on.gif";
		about_off = new Image();
		about_off.src = "images/royden/about_off.gif";

		services_on = new Image();
		services_on.src = "images/royden/services_on.gif";
		services_off = new Image();
		services_off.src = "images/royden/services_off.gif";

		sectors_on = new Image();
		sectors_on.src = "images/royden/sectors_on.gif";
		sectors_off = new Image();
		sectors_off.src = "images/royden/sectors_off.gif";

		health_on = new Image();
		health_on.src = "images/royden/health_on.gif";
		health_off = new Image();
		health_off.src = "images/royden/health_off.gif";

		clients_on = new Image();
		clients_on.src = "images/royden/clients_on.gif";
		clients_off = new Image();
		clients_off.src = "images/royden/clients_off.gif";

		news_on = new Image();
		news_on.src = "images/royden/news_on.gif";
		news_off = new Image();
		news_off.src = "images/royden/news_off.gif";
                
                
                
                
		contact_on = new Image();
                contact_on.src = "images/royden/contact_on.gif";
                contact_off = new Image();
                contact_off.src = "images/royden/contact_off.gif";

		careers_on = new Image();
                careers_on.src = "images/royden/careers_on.gif";
                careers_off = new Image();
                careers_off.src = "images/royden/careers_off.gif";
                
		sitemap_on = new Image();
                sitemap_on.src = "images/royden/sitemap_on.gif";
                sitemap_off = new Image();
                sitemap_off.src = "images/royden/sitemap_off.gif";
              
                
}
                        
function hiLite(imgID,changeID) {
                        
        if (document.images) {
        document.images[imgID].src = eval(changeID + ".src");
        return true;
        }
}