var FTab = function () {
    var obj = this;
    var ksnav_gs_tag = false;
    var navTop = 640;
    var py = 36;
    var $minnav_a;
    var $minnav_div;
    var topArray = new Array();
    var nowNavIndex = 0;
    obj.minnav;
    var NavGS = function () {
        for (var i = 0; i < $minnav_div.size(); i++) {
            topArray[i] = $minnav_div.eq(i).offset().top;
        }
        var scrollTop = $(document).scrollTop();
        if (scrollTop > navTop) {
            if (!ksnav_gs_tag) {
                obj.minnav.addClass("KeepTop");
                ksnav_gs_tag = true;
            }
            else {
                var temScrollTop = scrollTop + py + 60;
                if (temScrollTop < topArray[0]) {
                    NavBJ(0);
                }
                else {
                    for (var i = topArray.length; i > 0; i--) {
                        if (temScrollTop > topArray[i - 1]) {
                            NavBJ(i);
                            break;
                        }
                    }
                }
            }
        }
        else {
            if (ksnav_gs_tag) {
                obj.minnav.removeClass("KeepTop");
                ksnav_gs_tag = false;
                NavBJ(0);
            }
        }
    }
    var NavBJ = function (index) {
        $minnav_a.eq(nowNavIndex).removeClass("on");
        $minnav_a.eq(nowNavIndex).addClass("off");
        nowNavIndex = index;
        $minnav_a.eq(nowNavIndex).removeClass("off");
        $minnav_a.eq(nowNavIndex).addClass("on");
    }
    obj.Start = function (navItem, contentItem, py, minnavObj) {
        if (minnavObj) {
            obj.minnav = minnavObj;
        }
        else {
            obj.minnav = $("#minnav");
        }
        navTop = obj.minnav.offset().top;
        if (navItem) {
            $minnav_a = $(navItem);
        }
        else {
            $minnav_a = $("#minnav a");
        }
        if (contentItem) {
            $minnav_div = $(contentItem);
        }
        else {
            $minnav_div = $("#mincontent div.fgdh");
        }
        for (var i = 0; i < $minnav_div.size(); i++) {
            topArray.push($minnav_div.eq(i).offset().top);
        }
        $(window).scroll(NavGS); /*注册事件*/
        $minnav_a.click(function () {
            var temIndex = $minnav_a.index(this);
            if (temIndex > 0) {
                $(document).scrollTop($minnav_div.eq(temIndex - 1).offset().top - py);
                NavBJ(temIndex);
            }
            else {
                $(document).scrollTop(navTop);

            }
        });
        NavGS();
    };
}
var FollowTab = new FTab();