CheckIsLogin();

                function CheckIsLogin() {
                    document.getElementById('LogOnStatus').innerHTML = "<img src=\"/Skin/Default/Images/loading.gif\" alt=\"\"/>";
                    var x = new AjaxRequest('XML', 'status');
                    x.para = [];
                    x.post('logincheck', '/ajax.aspx', function(s) {
                        var xml = x.createXmlDom(s);
                        var status = xml.getElementsByTagName("status")[0].firstChild.data;
                    
                        if (status == 'ok') {
                            document.getElementById('LogOnStatus').style.display = "";
                            document.getElementById('LoginFrom').style.display = "none";
                            document.getElementById('LogOnStatus').innerHTML = GetUserInfo(xml);
                        }
                        else {
                            document.getElementById('LogOnStatus').style.display = "none";
                            document.getElementById('LoginFrom').style.display = "";

                        }
                    });
                }
                function GetUserInfo(xml) {
                    var userInfo = "欢迎您, " + xml.getElementsByTagName("username")[0].firstChild.data + "&nbsp;&nbsp;|&nbsp;&nbsp;";
                    userInfo = userInfo + "<a href=\"/User/Logout.aspx\" id=\"LogOutLink\" linkOpenType=\"_top\">退出</a>&nbsp;&nbsp;";
                    return userInfo;
                  
                } 
				function AddFavorite(sURL, sTitle)
{
    try
    {
        window.external.addFavorite(sURL, sTitle);
    }
    catch (e)
    {
        try
        {
            window.sidebar.addPanel(sTitle, sURL, "");
        }
        catch (e)
        {
            alert("加入收藏失败，请使用Ctrl+D进行添加");
        }
    }
}