$(document).ready(function(){
	var _subHeight = [];
	$('#menu div').each(function(i,el){
		_subHeight[i] = $(el).height();
		$(el).css({
			visibility:'visible',
			display:'none',
			height:0
		});
	})
	$('#menu li').hover(function(){
		var _indexDrop = $('#menu div').index($(this).children('div'));
		$(this).children('div').css('display','block');
		$(this).children('div').animate({height:_subHeight[_indexDrop], top:-_subHeight[_indexDrop]+38} , {queue:false, duration:600});
	}, function(){
		var _this = this;
		$(_this).children('div')
			.animate(
				{height:0, top:38},
				{queue:false, duration:600, complete:function(){
					$(this).css('display','none')
				}
			});
	});
});