if (document.images) {
   homeon= new Image(75,38);
   homeon.src="http://www.undaground.com/wp-content/themes/undaground/home/home-down.png";

   homeoff= new Image(75,38);
   homeoff.src="http://www.undaground.com/wp-content/themes/undaground/home/home-up.png";

   emailliston= new Image(75,38);
   emailliston.src="http://www.undaground.com/wp-content/themes/undaground/home/emaillist-down.png";

   emaillistoff= new Image(75,38);
   emaillistoff.src="http://www.undaground.com/wp-content/themes/undaground/home/emaillist-up.png";

   getappon= new Image(180,48);
   getappon.src="http://www.undaground.com/wp-content/themes/undaground/home/get-app-now-down.png";

   getappoff= new Image(180,48);
   getappoff.src="http://www.undaground.com/wp-content/themes/undaground/home/get-app-now-up.png";

   subscribeon= new Image(120,50);
   subscribeon.src="http://www.undaground.com/wp-content/themes/undaground/home/subscribe-down.png";

   subscribeoff= new Image(150,38);
   subscribeoff.src="http://www.undaground.com/wp-content/themes/undaground/home/subscribe-up.png";

   mapon= new Image(75,38);
   mapon.src="http://www.undaground.com/wp-content/themes/undaground/home/map-down.png";

   mapoff= new Image(75,38);
   mapoff.src="http://www.undaground.com/wp-content/themes/undaground/home/map-up.png";

   loginon= new Image(75,38);
   loginon.src="http://www.undaground.com/wp-content/themes/undaground/home/login-down.png";

   loginoff= new Image(75,38);
   loginoff.src="http://www.undaground.com/wp-content/themes/undaground/home/login-up.png";

   logouton= new Image(75,38);
   logouton.src="http://www.undaground.com/wp-content/themes/undaground/home/logout-down.png";

   logoutoff= new Image(75,38);
   logoutoff.src="http://www.undaground.com/wp-content/themes/undaground/home/logout-up.png";

   newson= new Image(75,38);
   newson.src="http://www.undaground.com/wp-content/themes/undaground/home/news-down.png";

   newsoff= new Image(75,38);
   newsoff.src="http://www.undaground.com/wp-content/themes/undaground/home/news-up.png";

   contacton= new Image(75,38);
   contacton.src="http://www.undaground.com/wp-content/themes/undaground/home/contact-down.png";

   contactoff= new Image(75,38);
   contactoff.src="http://www.undaground.com/wp-content/themes/undaground/home/contact-up.png";

}

function lightup(imgName) {
   if (document.images) {
      imgOn=eval(imgName + "on.src");
      document[imgName].src= imgOn;
   }
}

function turnoff(imgName) {
   if (document.images) {
      imgOff=eval(imgName + "off.src");
      document[imgName].src= imgOff;
    }
}