(function() {
    var _$ = function(o) { return document.getElementById(o); };
    function _InitNav(id) { _$(id).className = _$(id).className + ' sel'; }
    function _ResetNav(nid, mid) { _$(nid).onmouseover = null; _$(nid).onmouseout = null; _$(mid).style.display = ''; oldObj = _$(mid); }
    function _InitItem(id) { _$(id).className = 'sub_sel'; }
    var u = window.location;
    //首页
    if (/^http:\/\/www\.21edu\.com\/?$/ig.test(u) || /^http:\/\/www\.21edu\.com\/index\.shtml$/ig.test(u)) {
        _InitNav('nav_01');
        return;
    }
    //个性化辅导
    if (/^http:\/\/www\.21edu\.com\/prosever\/.*?/ig.test(u)) {
        _InitNav('nav_02');
        _ResetNav('nav_02', 'menu02');
        if (/21edu\.com\/prosever\/index\.shtml/ig.test(u)) {
            _InitItem('nav_02_01');
        } else if (/21edu\.com\/prosever\/product.*?/ig.test(u)) {
            _InitItem('nav_02_01');
        } else if (/21edu\.com\/prosever\/primary.*?/ig.test(u)) {
            _InitItem('nav_02_02');
        } else if (/21edu\.com\/prosever\/junior.*?/ig.test(u)) {
            _InitItem('nav_02_03');
        } else if (/21edu\.com\/prosever\/senior.*?/ig.test(u)) {
            _InitItem('nav_02_04');
        } else if (/21edu\.com\/prosever\/summer\/new.*?/ig.test(u)) {
            _InitItem('nav_02_05');
        } else if (/21edu\.com\/prosever\/personal\/personal.*?/ig.test(u)) {
            _InitItem('nav_02_06');
        }
        return;
    }
    //学习中心
    if (/^http:\/\/www\.21edu\.com\/studycenter$/ig.test(u)) {
        _InitNav('nav_03');
        return;
    }
    /http:\/\/(.*?)\.21edu\.com.*?/ig.test(u);
    for (var i = 0; i < CitySchoolData.length; i++) {
        var cities = CitySchoolData[i].Cities;
        for (var j = 0; j < cities.length; j++) {
            if (RegExp.$1.toLowerCase() == cities[j].CitySpell.toLowerCase()) {
                _InitNav('nav_03');
                return;
            }
        }
    }
    //师资团队
    if (/^http:\/\/www\.21edu\.com\/team$/ig.test(u) || /^http:\/\/www\.21edu\.com\/teacher.*?/ig.test(u) || /^http:\/\/www\.21edu\.com\/expert.*?/ig.test(u)) {
        _InitNav('nav_04');
        _ResetNav('nav_04', 'menu04');
        if (/21edu\.com\/expert.*?/ig.test(u)) {
            _InitItem('nav_04_01');
        } else if (/21edu\.com\/teacher.*?/ig.test(u)) {
            _InitItem('nav_04_02');
        }
        return;
    }
    //成功案例
    if (/^http:\/\/www\.21edu\.com\/successfulcase.*?/ig.test(u)) {
        _InitNav('nav_05');
        return;
    }
    //在线服务
    if (/^http:\/\/www\.21edu\.com\/faq.*?/ig.test(u) || /^http:\/\/www\.21edu\.com\/apply.*?/ig.test(u)) {
        _InitNav('nav_06');
        _ResetNav('nav_06', 'menu06');
        if (/21edu\.com\/apply.*?/ig.test(u)) {
            _InitItem('nav_06_01');
        } else if (/21edu\.com\/faq.*?/ig.test(u)) {
            _InitItem('nav_06_02');
        }
        return;
    }
    //学大动态
    if (/^http:\/\/www\.21edu\.com\/news.*?/ig.test(u)) {
        _InitNav('nav_07');
        _ResetNav('nav_07', 'menu07');
        if (/21edu\.com\/news\/list\/1.*?/ig.test(u) || /21edu\.com\/news\/bulletin.*?/ig.test(u)) {
            _InitItem('nav_07_01');
        } else if (/21edu\.com\/news\/list\/2.*?/ig.test(u) || /21edu\.com\/news\/events.*?/ig.test(u)) {
            _InitItem('nav_07_02');
        } else if (/21edu\.com\/news\/list\/3.*?/ig.test(u) || /21edu\.com\/news\/media.*?/ig.test(u)) {
            _InitItem('nav_07_03');
        } else if (/21edu\.com\/news\/list\/4.*?/ig.test(u) || /21edu\.com\/news\/parentclassroom.*?/ig.test(u)) {
            _InitItem('nav_07_04');
        }
        return;
    }
    //关于学大
    if (/^http:\/\/www\.21edu\.com\/about.*?/ig.test(u)) {
        _InitNav('nav_08');
        _ResetNav('nav_08', 'menu08');
        if (/21edu\.com\/about\/about\.shtml/ig.test(u)) {
            _InitItem('nav_08_01');
        } else if (/21edu\.com\/about\/about_tea.*?/ig.test(u)) {
            _InitItem('nav_08_02');
        } else if (/21edu\.com\/about\/about_ys.*?/ig.test(u)) {
            _InitItem('nav_08_03');
        } else if (/21edu\.com\/about\/about_ry.*?/ig.test(u)) {
            _InitItem('nav_08_04');
        } else if (/21edu\.com\/about\/about_lc.*?/ig.test(u)) {
            _InitItem('nav_08_05');
        } else if (/21edu\.com\/about\/about_hd.*?/ig.test(u)) {
            _InitItem('nav_08_06');
        } else if (/21edu\.com\/about\/contact.*?/ig.test(u)) {
            _InitItem('nav_08_07');
        }
        return;
    }
    //没有匹配规则默认首页
    _InitNav('nav_01');
})()