顶部缓冲下拉菜单导航特效的JS代码

<script type="text/javascript">
            $(function() {
                var d=300;
                $(#navigation a).each(function(){
                    $(this).stop().animate({
                        marginTop:-80px
                    },d+=150);
                });

                $(#navigation > li).hover(
                function () {
                    $(a,$(this)).stop().animate({
                        marginTop:-2px
                    },200);
                },
                function () {
                    $(a,$(this)).stop().animate({
                        marginTop:-80px
                    },200);
                }
            );
            });
        </script>