如何在VBScript中使用InternetExplorer.Application引用Popup IE窗口

Question

我有一个从命令行运行的VB脚本;脚本打开网站填充跟踪编号字段并执行按钮的onclick事件，该按钮在PopUp窗口中返回跟踪事件。

如何引用弹出窗口以便我可以解析结果？

set ie = CreateObject("InternetExplorer.Application")

With ie           
    .Visible = False
    .Navigate "http://tracksomething.com/getthatnumber.ashx?Types=SH,&NetworkId=30129&Size=Small&Color=btn%20btn-primary&Language=EN"
    Do Until .ReadyState = 4
        Wscript.Sleep 1000
    Loop

    Set trknum = .document.getElementByID("transactionNumberId")
    trknum.Value = rst("trknum") ' change this to yours
    Set button = .document.getElementByID("getTtansactionScriptButton")
    button.click

    Wscript.Sleep 2000

    Content = .Document.GetElementsByTagName("body")(0).InnerText
    ts.WriteLine Content

End With