老大  找的这个  退出后跳转到首页  ，加上后能退出 不跳转，

function dr_tuichu(url) {
    $.ajax({type: "GET",dataType:"json", url: "/index.php?s=api&c=api&m=loginout",
        success: function(json) {
            var oss_url = json.data.sso;
            // 发送同步登录信息
            for ( var i = 0; i < oss_url.length; i++){
                $.ajax({
                    type: "GET",
                    url:oss_url[i],
                    dataType: "jsonp",
                    success: function(json){ },
                    error: function(){ }
                });
            }
            dr_cmf_tips(1, json.msg);
            setTimeout('_window.location. target="_blank" href="'+url+'"', 2000);
        },
        error: function(HttpRequest, ajaxOptions, thrownError) {
            dr_ajax_alert_error(HttpRequest, ajaxOptions, thrownError)
        }
    });
}