$(function(){
	var _d = 400;
	$('#nav > li').each(function(){
		this.drop  = $(this).find('.drop-inner').css({opacity:0});
		$(this).mouseenter(function(){
			$(this).addClass('hover');
			if(this.drop.length){
				this.drop.animate({opacity: 1},{duration: _d, queue: false, complete: function (){
					$(this).css('opacity','auto');
				}});
			}
		}).mouseleave(function(){
			$(this).removeClass('hover');
			if(this.drop.length){
				this.drop.animate({opacity: 0},{duration: _d, queue: false});
			}
		})
	})
})