$(document).ready(function() {
	
	$("#nav").hover(function() {
		
			$(this)
				.stop(true, false)
				.css({
					zIndex: "100",
					position: "relative"
				})
				.animate({
					height: 200 + "px"
				});
			
		}, function() {
				$(this).stop(true, false).animate({
					height: 50
			});
		});	
});