从网页获取详细信息和文档

Question

我需要从网站上获取详细信息（即托运人，收货人姓名）以及所有要保存在C盘中的文件。

一次可以跟踪多个引用，下面是代码。

当我进一步打开文档时，网络链接未显示任何文件引用。

如何循环链接？

Option Explicit
Public Sub Login()
    Dim ie As New InternetExplorerMedium
    'Dim ie As New InternetExplorer               'InternetExplorerMedium
    With ie
        .Visible = True
        .navigate "https://portal.expeditors.com/expo/login"

        While .Busy Or .readyState < 4: DoEvents: Wend

        With .document

            With .getElementById("j_username")
                .Focus
                .Value = "bom-sumand"
            End With
            With .getElementById("j_password")
                .Focus
                .Value = "jun-2018"
            End With

            .getElementById("signInBtn").Click

        End With

        While .Busy Or .readyState < 4: DoEvents: Wend

        ie.Visible = True
        ie.navigate "https://expo.expeditors.com/expotr/expotr?action=com.expd.webapp.tracking.action.searches.SearchWebAction&SearchType=advancedshipment.BaseAdvancedShipmentSearch&reference=4320112556"


        While .Busy Or .readyState < 4: DoEvents: Wend

        ie.Visible = True
        ie.navigate "https://expo.expeditors.com/expotr/expotr?action=com.expd.webapp.tracking.action.document.DocumentImageDownloadWebAction&Type=Image.Get&xref=utbY7EWF98bNjBJgJX0qGubmHC8KZv9cJLDToqpU3UOz8RpExFamOA%3D%3D"
    End With
End Sub

我是VBA网页编码的新手。我已经做了很多VBA Excel和Outlook脚本。