var d = document;
var h = d.location.href;
var origSrc;
var s = '/';
var e = '_over.'+'gif';

if      (h.indexOf('/games/') != -1)      { s += 'games'; }
else if (h.indexOf('/adventures/') != -1) { s += 'adventures'; }
else if (h.indexOf('/show/') != -1)       { s += 'show'; }
else if (h.indexOf('/jack.pl') != -1)     { s += 'adventures'; }
else if (h.indexOf('/messages.pl') != -1) { s += 'adventures'; }
else if (h.indexOf('/teachers-parents/') != -1 || h.indexOf('/sitemap/') != -1) { s += 'teachers-parents'; }

s += '/images/nav/';

if (d.images) {
	var home = new Image(45,22);   home.src = s+'home'+e;
	var site = new Image(56,22);   site.src = s+'sitemap'+e;
	var prnt = new Image(117,22);  prnt.src = s+'parents'+e;
	var adve = new Image(181,74);  adve.src = s+'adventures'+e;
	var game = new Image(140,74);  game.src = s+'games'+e;
	var show = new Image(108,74);  show.src = s+'show'+e;
	var logo = new Image(162,89);  logo.src = s+'logo'+e;
}

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

function off(name) { if (d.images && origSrc != null) { d[name].src = origSrc; } }

function menuNav() {
	var f = document.forms[0];
	var p = f.page.options[f.page.selectedIndex].value;
	if (p.length > 0) { location.href = p; }
	else { location.href = '/sitemap/'; }
	return false;
}