Refreshing AxWebBrowser in background while other browser is displayed

I have a simple program that navigates 4 browser windows to 4 different web sites and then after my timer elapses at 20 seconds the browser 1 will hide then 2 will show all the way through the 4 windows looping.  Problem is that I am sending a refresh command to the browser while it is in the background and the browser window does not refresh until it is visible again.  I have tried both AxWebBrowser.Refresh() and AxWebBrowser.Refresh2().  Refresh doesn't seem to work at all and Refresh2 will work but only when the browser is visible.  Here is code below.


 Private Sub Timer1_Elapsed(ByVal sender As Object, ByVal e As System.Timers.ElapsedEventArgs) Handles Timer1.Elapsed
        On Error Resume Next

        Static intBrowserID As Integer = 0

        Select Case intBrowserID
            Case 0
                AxWebBrowser1.Visible = True
                AxWebBrowser2.Visible = False
                'AxWebBrowser2.Refresh2()
                AxWebBrowser3.Visible = False
                AxWebBrowser4.Visible = False
                AxWebBrowser4.Refresh2()
            Case 1
                AxWebBrowser1.Visible = False
                AxWebBrowser1.Refresh2()
                AxWebBrowser2.Visible = True
                AxWebBrowser3.Visible = False
                AxWebBrowser4.Visible = False
            Case 2
                AxWebBrowser1.Visible = False
                AxWebBrowser2.Visible = False
                AxWebBrowser2.Refresh2()
                AxWebBrowser3.Visible = True
                AxWebBrowser4.Visible = False
            Case 3
                AxWebBrowser1.Visible = False
                AxWebBrowser2.Visible = False
                AxWebBrowser3.Visible = False
                AxWebBrowser3.Refresh2()
                AxWebBrowser4.Visible = True
        End Select
        intBrowserID += 1
        If intBrowserID > 3 Then
            intBrowserID = 0
        End If

    End Sub