Help with tabs in web browser

Webbrowser1/2/3/4/5/6.Navigate(TextBox1.Text)

Public Class Form1
Dim int As Integer = 0

Private Sub Loading(ByVal sender As Object, ByVal e As Windows.Forms.WebBrowserProgressChangedE ventArgs)
ToolStripProgressBar1.Maximum = e.MaximumProgress
ToolStripProgressBar1.Value = e.CurrentProgress
End Sub

Private Sub Done(ByVal sender As Object, ByVal e As Windows.Forms.WebBrowserDocumentComplete dEventArgs)
TabControl1.SelectedTab.Text = CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).DocumentTitle
ComboBox1.Text = CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).Url.ToString
End Sub

Form1_Load:
Dim Browser As New WebBrowser
TabControl1.TabPages.Add("New Page")
Browser.Name = "Web Browser"
Browser.Dock = DockStyle.Fill
TabControl1.SelectedTab.Controls.Add(Bro wser)
AddHandler Browser.ProgressChanged, AddressOf Loading
AddHandler Browser.DocumentCompleted, AddressOf Done
int = int + 1
CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).GoHome()

Add Tab:
Dim Browser As New WebBrowser
TabControl1.TabPages.Add("New Page")
TabControl1.SelectTab(int)
Browser.Name = "Web Browser"
Browser.Dock = DockStyle.Fill
TabControl1.SelectedTab.Controls.Add(Bro wser)
AddHandler Browser.ProgressChanged, AddressOf Loading
AddHandler Browser.DocumentCompleted, AddressOf Done
int = int + 1
CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).GoHome()

Remove Tab:
If Not TabControl1.TabPages.Count = 1 Then
TabControl1.TabPages.RemoveAt(TabControl 1.SelectedIndex)
TabControl1.SelectTab(TabControl1.TabPag es.Count - 1)
int = int - 1
End If

Website Properties:
CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).ShowPropertiesDialog

Back:
CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).GoBack()

Forward:
CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).GoForward()

Refresh:
CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).Refresh()

Stop:
CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).Stop()

Home:
CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).GoHome()

Go:
CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).Navigate(ComboBox1.Text)

Timer1:
ToolStripStatusLabel1.Text = CType(TabControl1.SelectedTab.Controls.I tem(0), WebBrowser).StatusText