vb的webbrowser获取一个用js做的网页，高分求帮忙！解决思路

vb的webbrowser获取一个用js做的网页，高分求帮忙！
我想用vb的webbrowser获取一个用js做的网页，这个网页有三层iframe，然后我想webbrowser能够读到最后一层iframe，而这些iframe的src都是赋值的
我主要目的是想获取到最后一层的某一个input，然后给它的value赋值
iframe的格式：<iframe name="funcPlaceFrame" width="100%" height="100%" id="funcPlaceFrame" src="" frameBorder="0" scrolling="auto">
小弟不才，查了几天资料还是不能解决这个问题，希望高人帮忙！！！在线等帮忙

------解决方案--------------------
给个跨框架点击的函数例子，仅供你参考

VB code

Function ClickTheId(TheDocument As HTMLDocument, TheId As String) As Boolean
  Dim ElWithId As Object, oFrame As IHTMLWindow2, oDoc As HTMLDocument, i As Long, bClicked As Boolean
  Set ElWithId = TheDocument.getElementById(TheId)
  If Not ElWithId Is Nothing Then
  On Error Resume Next
  ElWithId.focus
  On Error GoTo 0
  ElWithId.Click
  Set ElWithId = Nothing
  ClickTheId = True
  ElseIf TheDocument.frames.length > 0 Then
  For i = 0 To TheDocument.frames.length - 1
  Set oFrame = TheDocument.frames(i)
  On Error Resume Next
  Set oDoc = oFrame.Document
  If Err.Number = 70 Then
  frmDenied = frmDenied + 1
  MsgBox "Error # " & Err.Number & ", " & Err.Description & vbCrLf & _
  "Source: " & Err.Source, , "Error"
  Else
  bClicked = ClickTheId(oDoc, TheId)
  If bClicked Then ClickTheId = True: Exit Function
  End If
  Next i
  ClickTheId = False
  Else
  ClickTheId = False
  End If
End Function

------解决方案--------------------

应该要用上
HTMLDocument的parentWindow

------解决方案--------------------

要用上getElementById

vb的webbrowser获取一个用js做的网页，高分求帮忙！解决思路

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