$(function() {
	$('#facilities-targets li').each(function() {
		var distance = 10;
		var time = 250;
		var hideDelay = 500;
		
		var hideDelayTimer = null;
		
		var beingShown = false;
		var shown = false;
		
		var target = $('.target', this);
		var popup = $('.popup', this).css('opacity', 0);
		
		$([target.get(0), popup.get(0)]).mouseover(function() {
			if (hideDelayTimer) {
				clearTimeout(hideDelayTimer);
			}
			
			if (beingShown || shown) {
				return false;
			} else {
				beingShown = true;
			
				popup.css({
					top: -80,
					display: 'block'
				}).animate({
					top: '-=' + distance + 'px',
					opacity: 1
				}, time, 'swing', function() {
					beingShown = false;
					shown = true;
				});
			}
		}).mouseout(function() {
			if (hideDelayTimer) {
				clearTimeout(hideDelayTimer);
			}
			
			hideDelayTimer = setTimeout(function() {
				hideDelayTimer = null;
				
				popup.animate({
					top: '-=' + distance + 'px',
					opacity: 0
				}, time, 'swing', function() {
					shown = false;
					popup.css('display', 'none');
				});
			}, hideDelay);
		});
	});
});