var ischrome = navigator.useragent.tolowercase().match(/chrome/) != null; 

$(function() {
    bindclosebtn('#service_bar_close'); //为id为close的div添加点击事件
    bindminibtn('#online_service_minibar', '#online_service_fullbar'); //绑定mini按钮事件
    bindgroupbtn('.service_menu li dl dt'); //光标经过显示分组
    showdefaultview(default_view); //展开方式
    $('.service_menu li.hover dl dd').show();
    scrollad('#online_service_bar');
    //当页面大小改变时
    $(window).scroll(function() {
        scrollad('#online_service_bar');
    });
});

//显示展开或收缩状态
function showdefaultview(status) {
    var cookievalue = getcookie('online_service_status');
    if (cookievalue != "") {
        status = cookievalue;
    }
    if (status == 1) {
        $('#online_service_minibar').hide();
        $('#online_service_fullbar').show();
    } else {
        $('#online_service_fullbar').hide();
        $('#online_service_minibar').show();
    }
    addcookie('online_service_status', status, 720);
}

//为id为close的div添加点击事件
function bindclosebtn(obj) {
    $(obj).click(function() {
        $('#online_service_fullbar').hide(1000, function() {
            if (ischrome) {
                $('#online_service_minibar').show();
            }
            else {
                $('#online_service_minibar').show(500);
            }
            addcookie('online_service_status', 0, 720);
        });
    });
}

//绑定mini按钮事件
function bindminibtn(hideobj, showobj) {
    $(hideobj).bind('mouseover', function() {
        showminibar(hideobj, showobj);
        addcookie('online_service_status', 1, 720);
    });
}

//光标经过显示分组
function bindgroupbtn(obj) {
    $(obj).hover(function() {
        var pobj = $(this).parent().parent();
        $(pobj).stop();
        $(pobj).siblings(".hover").removeclass('hover');
        showservicemenu(pobj);
    }, function() {
        $(this).parent().parent().stop();
    });
}

//显示mini样式
function showminibar(hideobj, showobj) {
    $(hideobj).hide(500, function() {
        if (ischrome) {
            $(showobj).show();
        }
        else {
            $(showobj).show(500);
        }
    });
}

//显示当前菜单
function showservicemenu(obj, speed) {
    speed = speed || 500;
    $(obj).addclass('hover').children('dl').children('dd').slidedown(speed);
    $(obj).siblings().children('dl').children('dd').slideup(speed);
}

//定义一个名字为scrollad的函数
function scrollad(obj) {
    //定义位移为floatdiv的高度加上滚动条的顶部距离
    var offset = $(obj).height() + $(document).scrolltop() - 30;
    //为floatdiv添加动画为top位移offset的高度，持续0.8秒。
    $(obj).stop().animate({ top: offset }, 1000);
}

//写cookie
function addcookie(objname, objvalue, objhours) {
    var str = objname + "=" + escape(objvalue);
    if (objhours > 0) {//为0时不设定过期时间，浏览器关闭时cookie自动消失
        var date = new date();
        var ms = objhours * 3600 * 1000;
        date.settime(date.gettime() + ms);
        str += "; expires=" + date.togmtstring();
    }
    document.cookie = str;
}

//读cookie
function getcookie(objname) {//获取指定名称的cookie的值
    var arrstr = document.cookie.split("; ");
    for (var i = 0; i < arrstr.length; i++) {
        var temp = arrstr[i].split("=");
        if (temp[0] == objname) return unescape(temp[1]);
    }
    return "";
}