var nav = new Array('home', 'biography', 'dates', 'gallery', 'references', 'booking');

function mo (mouseover, active) {

	for (var i = 0; i < nav.length; i++)
		document.getElementById('nav_' + nav[i]).src = (mouseover && nav[i] != active) ? '/img/nav/' + nav[i] + '_off.gif' : '/img/nav/' + nav[i] + '.gif';

}