Confusion Galore!

[arpan_de]

In a Web Browser project, whichever web page a user has navigated to, I am adding the titles of the web pages along with their respective URLs in a text file. I am then populating 2 Collections - one with the title of the web page & the other one with the URL of the web page. This is how I am doing it:

Private Sub wWeb_TitleChange(ByVal Text As String)
    Dim iFile As Integer
    Dim FileName As String
    Dim colTitle As Collection
    Dim colURL As Collection

    Set colTitle = New Collection
    Set colURL = New Collection

    iFile = FreeFile
    FileName = App.Path & "\SessionHistory.txt"

    Open FileName For Input As #iFile
        Do While Not EOF(iFile)
            Input #iFile, strTitle, strURL
            colTitle.Add strTitle, strTitle
            colURL.Add strURL, strURL
        Loop
    Close #iFile
End Sub 

There is another function (not shown) which loads a menu with these web pages. The web page the user currently is in is checked in the menu. A user can navigate in 2 ways - either by clicking a link or by pressing the Back/Forward buttons. If the Back or Forward button is pressed then a Public Boolean blnNavButtons is set to True & in the BeforeNavigate2 event function:

Private Sub wWeb_BeforeNavigate2(ByVal pDisp As Object, URL As Variant, Flags As Variant, TargetFrameName As Variant, PostData As Variant, Headers As Variant, Cancel As Boolean)
    If (blnNavButtons = True) Then
        blnLinkClick = False
    Else
        blnLinkClick = True
    End If
End Sub 

Assume that a user goes to Page1, clicks a link & goes to Page2. In Page2, he again clicks a link which takes him to Page3 & finally in Page3, he clicks a link which takes him to Page4. Note that while he is navigating, the menu is simultaneously getting loaded with Page1, Page2, Page3 & Page4 which is now checked.

Right now, the user is in Page4. Now assume that he clicks the Back button & goes to Page3. Again he clicks the Back button & goes to Page2. Again he clicks the Back button which takes him to Page1. Now if the user clicks a link in Page1 which takes the user to Page5, I want Page2, Page3 & Page4 to get deleted from the Collections as well as from the menu. This is how I have done it (continuing wWeb_TitleChange where it has been left):

Private Sub wWeb_TitleChange(ByVal Text As String)
    ..........
    ..........
    ..........
    Close #iFile

    For i = 1 To colURL.Count
        If (colURL.Item(i) = wWeb.LocationURL) Then
            If (colURL.Count > i) Then
                If (blnLinkClick = True) Then
                    For j = i + 1 To colURL.Count
                        colURL.Remove j
                        colTitle.Remove j
                        Unload mnuSessionHistory(j - 1)
                    Next j

                    FileName = App.Path & "\SessionHistory.txt"
                    Open FileName For Output As #iFile
                        For j = 0 To mnuSessionHistory.UBound
                            Write #iFile, mnuSessionHistory(j).Caption, mnuSessionHistory(j).Tag
                        Next
                    Close #iFile
                End If
            End If
        End If
    Next i
End Sub 

The above code works fine but a problem creeps under the following circumstance:

User goes to Page1, clicks a link & goes to Page2, clicks a link & goes to Page3, clicks a link & goes to Page4. The menu now looks like this:

Page1
Page2
Page3
Page4

Page4 is checked. Now in Page 4, there is a link which takes the user back to Page1. So when this link is clicked, all the menu items get deleted & only Page1 remains in the menu where as I want the menu to look like this:

Page1
Page2
Page3
Page4
Page1

With Page1 checked.

What modifications are needed in the above code to do this?