$(function() {
    // 自定义 select
    (function () {
        var selects = $("#left .divselect");
        if (!selects.length) return;
        selects.each(function(idx) {
            var elem   = $(this),
                idx    = elem.index(),
                cptn   = elem.find('.caption'),
                ul     = elem.find('ul'),
                slct   = elem.find('select'),
                optn   = elem.find('option'),
                duration  = 150,
                opened = false,
                tt = -1,
                isuser = $('#volunteer .user').length === 1;
                offset_on  = isuser? -54: -51,
                offset_off = isuser? -3: 0;

            if (!slct.length) return;
            ul.children().eq(0).addclass('on');
            elem.on('mousedown', function(e, target) {
                if (opened) {
                    target = geteventtarget(e);
		    if (target.nodename === "span") return;
                    if (target.nodename === "li") target.classname = "on";
                    cptn.text(geteventtargettext(target));
                    optn.val(target.getattribute('data-value'));
                    close();
                } else {
                    open();
                }
            }).hover(function() {
                cleartimeout(tt);
            },function() {
                if (!opened) return;
                tt = settimeout(close, 500);
            });

            function open() {
                cptn.stop().animate({'background-position-y':offset_on}, duration);
                ul.stop().slidedown(duration, statetoggle);
            }
            function close() {
                cptn.stop().animate({'background-position-y':offset_off}, duration);
                ul.stop().slideup(duration, statetoggle);
            }
            function statetoggle() {
                opened = !opened;
            }
        });

        // 兼容方法
        function geteventtarget(e) {
            try {
                if (e.target) geteventtarget = function (e) { return e.target; }
                else throw undefined;
            } catch (exp) {
                geteventtarget = function () { return window.event.srcelement; }
            }
            return geteventtarget(e);
        }
        function geteventtargettext(t) {
            if ("innertext" in t) geteventtargettext = function (t) { if (t.nodename === "p") return; return t.innertext; };
            else geteventtargettext = function (t) { if (t.nodename === "p") return; return t.textcontent; };
            return geteventtargettext(t);
        }
    })();

    // 子栏目 hover
    (function() {
        var sup = $('#content .columns');
        if (!sup.length) return;
        var links = sup.find('a'),
            on    = links.filter('.on'),
            link  = on;

        links.hover(function() {
            link.removeclass('on');
            link = $(this).addclass('on');
        }, function(){});
        sup.hover(function(){}, function() {
            link.removeclass('on');
            link = on.addclass('on');
        });
    }());

    // tab 切换
    (function() {
        var menu = $('#left .tabmenu');
        if (!menu.length) return;
        var cont = $('#left .tabcont'),
            m_items = menu.children(),
            c_items = cont.children(),
            index   = 0,
            prev_i  = -1,
            curr_m  = m_items.eq(index).addclass('on'),
            curr_c  = c_items.eq(index).stop().slidedown(300);

        m_items.on('click', function(elem, idx) {
            elem = $(this);
            idx  = elem.index();
            if (idx === prev_i) return;
            prev_i = idx;
            curr_m.removeclass('on');
            curr_m = m_items.eq(idx).addclass('on');
            curr_c.stop().slideup(300);
            curr_c = c_items.eq(idx).stop().slidedown(300);
        });
    }());
	
	
});