Event.observe(document, 'dom:loaded', function() {
	
		// navigation rollovers and dropdowns
		$$('ul#nav li').each(function(li) {
			li.observe('mouseover', function() {
				$$('#nav li').each(function(x) { x.removeClassName('hover'); });
			});
			if (li.down('ul')) {
				li.observe('mouseover', function() {
					$(this).addClassName('hover');
					$('nav').addClassName('selected');
				});
			}
			li.onmouseout = function() {
				$(this).removeClassName('hover');
				$('nav').removeClassName('selected');
			}
		});
		
		// if there is an email field, add focus/blur events
		if ($('email_address')) {
			$('email_address').observe('focus', function() { if (this.value == 'your email address') this.value = ''; });
			$('email_address').observe('blur', function() { if (this.value == '') this.value = 'your email address'; });
		}
	});