<!--

	nav_decks_off = new Image();
	nav_decks_off.src = "images/nav_decks_off.gif";
	nav_decks_on = new Image();
	nav_decks_on.src = "images/nav_decks_on.gif";

	nav_floors_off = new Image();
	nav_floors_off.src = "images/nav_floors_off.gif";
	nav_floors_on = new Image();
	nav_floors_on.src = "images/nav_floors_on.gif";

	nav_interior_off = new Image();
	nav_interior_off.src = "images/nav_interior_off.gif";
	nav_interior_on = new Image();
	nav_interior_on.src = "images/nav_interior_on.gif";

	nav_teak_off = new Image();
	nav_teak_off.src = "images/nav_teak_off.gif";
	nav_teak_on = new Image();
	nav_teak_on.src = "images/nav_teak_on.gif";

	nav_hull_off = new Image();
	nav_hull_off.src = "images/nav_hull_off.gif";
	nav_hull_on = new Image();
	nav_hull_on.src = "images/nav_hull_on.gif";

	nav_arch_off = new Image();
	nav_arch_off.src = "images/nav_arch_off.gif";
	nav_arch_on = new Image();
	nav_arch_on.src = "images/nav_arch_on.gif";

	nav_chemical_off = new Image();
	nav_chemical_off.src = "images/nav_chemical_off.gif";
	nav_chemical_on = new Image();
	nav_chemical_on.src = "images/nav_chemical_on.gif";

	function imageon(imagename) {
		imgOn = eval(imagename + "_on.src");
		document[imagename].src = imgOn;
	}

	function imageoff(imagename) {
		imgOff = eval(imagename + "_off.src");
		document[imagename].src = imgOff;
	}

//-->