var d = document;
var s = '../images/topnav2/';
var e = '.gif';
var o = '_over'+e;

if (d.images) {
	var epis = new Image(312,119); epis.src = s+'btn_episode5'+e;
	var blog = new Image(100,34);  blog.src = s+'btn_blog'+e;
	var map  = new Image(96,38);    map.src = s+'btn_map'+e;
	
	var episOvr = new Image(312,119); episOvr.src = s+'btn_episode5'+o;
	var blogOvr = new Image(100,34);  blogOvr.src = s+'btn_blog'+o;
	var mapOvr  = new Image(96,38);    mapOvr.src = s+'btn_map'+o;

	var ornamt    = new Image(134,101);    ornamt.src = '../images/sidenav/bott_ornamt'+e;
	var ornamtOvr = new Image(134,101); ornamtOvr.src = '../images/sidenav/bott_ornamt'+o;
}

function over(n) { if (d.images) { d[n].src = eval(n+'Ovr.src'); } }

function off(n) { if (d.images) { d[n].src = eval(n+'.src'); } }