VB.NET Webbrowser newwindow problem

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VB

WebBrowserControl

Hi, There's some site I've to browse in my own browser. this site has a form which has to be submitted after filling. But when I submit it, it doesn't opening the page which should be opened. Any help will be appreciated.
Here's the code i'm using

Private Sub WebBrowser1_NewWindow(sender As Object, e As System.ComponentModel.CancelEventArgs) Handles WebBrowser1.NewWindow
        Dim wb As WebBrowser = sender
        Dim myElement As HtmlElement = wb.Document.ActiveElement
        Dim target As String = myElement.GetAttribute("href")

        Dim newTabPage As TabPage = New TabPage()
        Dim newWebBrowser As WebBrowser = New WebBrowser()
        newWebBrowser.IsWebBrowserContextMenuEnabled = False
        newWebBrowser.Dock = DockStyle.Fill
        AddHandler newWebBrowser.NewWindow, AddressOf WebBrowser1_NewWindow
        AddHandler newWebBrowser.ProgressChanged, AddressOf WebBrowser1_ProgressChanged
        newTabPage.Text = "New Tab"
        newTabPage.Controls.Add(newWebBrowser)
        TabControl1.TabPages.Add(newTabPage)
        TabControl1.SelectedTab = TabControl1.TabPages(TabControl1.TabCount - 1)
        newWebBrowser.Navigate(target)
        e.Cancel = True

    End Sub