//下拉菜单 例调用：Nav('#nav');
function Nav(id){
    var oNav = $(id);
    var aLi = oNav.find('li');

    aLi.hover(function (){
        $(this).addClass('on');
        $(this).find('.subNav').addClass('flipInY');
    },function (){
        $(this).removeClass('on');
        $(this).find('.subNav').removeClass('flipInY');
    })
}

$(".menuicon").click(function(){
    $(".navBox").slideToggle();
})
$(".zkicon").click(function(){
    $(this).parent().next().slideToggle();
    $(this).toggleClass("sqicon");
})
function leftnav(){
var Top1 = $('.leftNav ul').find('.cur').offset().top;
        //var Top1 = $('.subLeft ul').find('li').eq(0).offset().top;
        var bannerHeight = $('.banner').outerHeight();
        //alert(headerHeight)
        $('.line').css({"top":Top1-bannerHeight})

        $('.leftNav ul').mouseleave(function(){
            $('.line').stop().animate({"top":Top1-bannerHeight},200)
        })

        $('.leftNav ul').mousemove(function(e){
            var ulTop = $('.leftNav ul').offset().top;
            //这里可得到鼠标X坐标
            var pointX = e.pageX;
            //这里可以得到鼠标Y坐标
            var pointY = e.pageY;
            if(pointY-ulTop >= 0){
                $('.line').stop().animate({"top":pointY-ulTop-20},200)
            }
        })
}


(function () {
    var showMoreNChildren = function ($children, n) {
        //显示某jquery元素下的前n个隐藏的子元素
        var $hiddenChildren = $children.filter(":hidden");
        var cnt = $hiddenChildren.length;
        for (var i = 0; i < n && i < cnt ; i++) {
            $hiddenChildren.eq(i).show();
        }
        return cnt - n;//返回还剩余的隐藏子元素的数量
    }

    jQuery.showMore = function (selector) {
        if (selector == undefined) { selector = ".showMoreNChildren" }
        //对页中现有的class=showMorehandle的元素，在之后添加显示更多条，并绑定点击行为
        $(selector).each(function () {
            var pagesize = $(this).attr("pagesize") || 10;
            var $children = $(this).children();
            if ($children.length > pagesize) {
                for (var i = pagesize; i < $children.length; i++) {
                    $children.eq(i).hide();
                }

                $("<div class='showMorehandle' >显示更多</div>").insertAfter($(this)).click(function () {
                    if (showMoreNChildren($children, pagesize) <= 0) {
                        //如果目标元素已经没有隐藏的子元素了，就隐藏“点击更多的按钮条”
                        $(this).hide();
                    };
                });
            }
        });
    }
})();