if (document.images) {

	abouton = new Image(87, 74);
	abouton.src = "common/images/top_nav/about_roll.gif";
	
	aboutoff = new Image(87, 74);
	aboutoff.src = "common/images/top_nav/about.gif";
	
	bookedon = new Image(86, 74);
	bookedon.src = "common/images/top_nav/booked_roll.gif";
	
	bookedoff = new Image(86, 74);
	bookedoff.src = "common/images/top_nav/booked.gif";
	
	cateringon = new Image(133, 74);
	cateringon.src = "common/images/top_nav/catering_roll.gif";
	
	cateringoff = new Image(133, 74);
	cateringoff.src = "common/images/top_nav/catering.gif";
	
	reservationson = new Image(101, 24);
	reservationson.src = "common/images/top_nav/reservations_roll.gif";
	
	reservationsoff = new Image(101, 24);
	reservationsoff.src = "common/images/top_nav/reservations.gif";
	
	homeon = new Image(87, 24);
	homeon.src = "common/images/top_nav/home_roll.gif";
	
	homeoff = new Image(87, 24);
	homeoff.src = "common/images/top_nav/home.gif";
	
	menuon = new Image(70, 74);
	menuon.src = "common/images/top_nav/menu_roll.gif";
	
	menuoff = new Image(70, 74);
	menuoff.src = "common/images/top_nav/menu.gif";
	
	musicon = new Image(77, 74);
	musicon.src = "common/images/top_nav/music_roll.gif";
	
	musicoff = new Image(77, 74);
	musicoff.src = "common/images/top_nav/music.gif";
	
	tapon = new Image(69, 74);
	tapon.src = "common/images/top_nav/tap_roll.gif";
	
	tapoff = new Image(69, 74);
	tapoff.src = "common/images/top_nav/tap.gif";
	
}

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