function textSwitch(el, target, replace) {
	el = document.getElementById(el);
	if (el.value == replace || (replace && !el.value)) {
		el.value = target;
	}
}

// Navigation code

window.addEvent('domready', function(){
	$$('#top-nav li.root').each(function(el) {
		el.addEvent('mouseleave', function() {
			$(this).removeClass('persistent');
		});
		el.addEvent('mouseenter', function() {
			$(this).addClass('persistent');
		});
	});
	
	new FilmStrip($('filmstrip'), {
		orientation: 'vertical',
		increment: 3
	});
	
	if ($('chatwindow')) {
		new PositionedWindow($('chatwindow'), {
			position: 'upperRight',
			edge: 'upperRight'
		});
	}
});