[2005] Building Web browser need help setting Browser size

Hi

i am trying to program a web browser it is not nearly finished but i am having a small problem.

when you open the file the web broswer is sized and fits nicely BUT when u maximize the client there is a gap left between the toolstrip and the web browser.

I am asking how i can make the web browser to auto fit to any size the actual client is sized to by the user ?

i have attached the client so you guys can understand what i mean would appreciate any help here is the code :-
VB Code:
Public Class Form1
    Inherits System.Windows.Forms.Form
    Dim HP As String 'home page
    Dim SVP As Boolean 'enabled saving page
    Dim WAC As Integer 'number of saved pages
    Private Sub SetAsHomepaToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SetAsHomepaToolStripMenuItem.Click
        HP = InputBox("Type Home Page", "Setting Home Page", "No Home Page").ToString 'Set Home Page
        SaveOptions() 'Saving CyaBrowser Options
    End Sub
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.WindowState = FormWindowState.Maximized
        CyaBrowser.Dock = DockStyle.Bottom
        URL.Text = HP
        BrowseWeb() 'Open Home Page
        PageSave.Checked = SVP
        LoadOptions() 'Loading CyaBrowser Options
    End Sub
    Private Sub BrowseWeb()
        'Browse Web and open Page
        CyaBrowser.Navigate(URL.Text)
        StatusBar.Text = URL.Text
    End Sub
    Private Sub frmMain_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
        SaveOptions() 'Saving CyaBrowser Options
    End Sub
    Private Sub MenuExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MenuExit.Click
        SaveOptions()
    End Sub
    Private Sub PageSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PageSave.Click
        'set while pages will be saved
        If SVP = True Then
            PageSave.Checked = False
        Else
            PageSave.Checked = True
        End If
        SVP = PageSave.Checked
        SaveOptions() 'Saving CyaBrowser Options
    End Sub
    Private Sub btnGo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGo.Click
        BrowseWeb() 'Start Browsing Web
        CheckList() 'Saving pages
    End Sub
    Private Sub WA_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles URL.KeyUp
        If e.KeyCode = Keys.Enter Then
            BrowseWeb() 'Start Browsing Web
            CheckList() 'saving pages
        End If
    End Sub
    Private Sub CheckList()
        'saving page
        Dim bl As Boolean = True
        Dim i As Integer
        If SVP = True Then
            'checks if page is all ready saved
            For i = 0 To URL.Items.Count - 1
                If URL.Text = URL.Items.Item(i) Then
                    bl = False
                End If
            Next i
            If bl = True Then
                URL.Items.Add(URL.Text)
                WAC = URL.Items.Count - 1
                SaveOptions()
            End If
            If WAC > 0 Then
                SaveOptions() 'Saving SpeedNet Options
            End If
        End If
    End Sub
    Private Sub SearchingTools(ByVal index As Integer)
        On Error Resume Next
        Select Case index
            Case 1
                BrowseWeb() 'Start Browsing Web
                CheckList() 'saving pages
            Case 2
                CyaBrowser.GoBack() 'go back 
            Case 3
                CyaBrowser.GoForward() 'go forward
            Case 4
                CyaBrowser.Stop() 'stop browsing
            Case 5
                CyaBrowser.Refresh() 'refresh browser
            Case 6
                URL.Text = HP
                BrowseWeb() 'open home page
        End Select
    End Sub
    Private Sub SaveOptions()
        'saving CyaBrowser options and pages
        Dim i As Integer
        'open file
        Dim File As System.IO.FileInfo = New System.IO.FileInfo(System.Windows.Forms.Application.StartupPath & "\CyaBrowser")
        Dim WriteFile As System.IO.StreamWriter = File.CreateText()
        'save oprions
        WriteFile.WriteLine(HP)
        WriteFile.WriteLine(SVP)
        WriteFile.WriteLine(WAC)
        'save pages
        If WAC > 0 Then
            For i = 0 To WAC
                WriteFile.WriteLine(URL.Items.Item(i).ToString)
            Next
        End If
        WriteFile.Close()
    End Sub
    Private Sub LoadOptions()
        'loading CyaBrowser options and pages
        Dim i As Integer
        'open file
        Dim File As System.IO.FileInfo = New System.IO.FileInfo(System.Windows.Forms.Application.StartupPath & "\CyaBrowser")
        'if file exists then load options and pages
        If File.Exists = True Then
            Dim ReadFile As System.IO.StreamReader = File.OpenText()
            'load options
            HP = ReadFile.ReadLine
            SVP = ReadFile.ReadLine
            WAC = ReadFile.ReadLine
            'if there is any saved pages then load pages
            If WAC > 0 Then
                For i = 0 To WAC
                    URL.Items.Add(ReadFile.ReadLine)
                Next
            End If
            ReadFile.Close()
            PageSave.Checked = SVP
        Else 'if files not exists then 
            DefaultOptions() ' set CyaBrowser default options
        End If
    End Sub
    Private Sub DefaultOptions()
        'setting CyaBrowser default options
        'create new file
        Dim File As System.IO.FileInfo = New System.IO.FileInfo(System.Windows.Forms.Application.StartupPath & "\CyaBrowser")
        Dim WriteFile As System.IO.StreamWriter = File.CreateText()
        'set dfault options
        WriteFile.WriteLine("No Home Page")
        WriteFile.WriteLine(False)
        WriteFile.WriteLine(0)
        WriteFile.Close()
        'then load options
        LoadOptions()
    End Sub
    Private Sub ToolStripButton2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton2.Click
        CyaBrowser.GoBack()
    End Sub
    Private Sub ToolStripButton3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton3.Click
        CyaBrowser.GoForward()
    End Sub
    Private Sub btnStop_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
        CyaBrowser.Stop()
    End Sub
    Private Sub ToolStripButton5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripButton5.Click
        CyaBrowser.Refresh()
    End Sub
End Class