function openWindow()
    {
        var aaa=confirm("是否打开？");
        if(aaa==true)
        {
            var bbb=prompt("确定打开吗","http://www.imooc.com");
            window.open(bbb,"_blank","width=400,height=500,menubar=no,toolbar=no");
        }
        else
        {
            alert("再见！");
        }
    }