var navHome = new YAHOO.util.ImageLoader.group(null, null, 0);
navHome.registerBgImage('nav_home', '../images/nav_home_on.gif');
navHome.registerBgImage('nav_home', '../images/nav_home_h.gif');
navHome.registerBgImage('nav_home', '../images/nav_home.gif');
navHome.name = 'Nav Home';

var navServices = new YAHOO.util.ImageLoader.group(null, null, 0);
navServices.registerBgImage('nav_services', '../images/nav_services_on.gif');
navServices.registerBgImage('nav_services', '../images/nav_services_h.gif');
navServices.registerBgImage('nav_services', '../images/nav_services.gif');
navServices.name = 'Nav Services';

var navPortfolio = new YAHOO.util.ImageLoader.group(null, null, 0);
navPortfolio.registerBgImage('nav_portfolio', '../images/nav_portfolio_on.gif');
navPortfolio.registerBgImage('nav_portfolio', '../images/nav_portfolio_h.gif');
navPortfolio.registerBgImage('nav_portfolio', '../images/nav_portfolio.gif');
navPortfolio.name = 'Nav Portfolio';

var navContact = new YAHOO.util.ImageLoader.group(null, null, 0);
navContact.registerBgImage('nav_contact', '../images/nav_contact_on.gif');
navContact.registerBgImage('nav_contact', '../images/nav_contact_h.gif');
navContact.registerBgImage('nav_contact', '../images/nav_contact.gif');
navContact.name = 'Nav Contact';