Using Masterpages and subscribing to events.

Good PAge regarding the use of masterpages
http://www.odetocode.com/Articles/450.aspx

Also discusses the adding of Javascript to a page using the

Dim script As String = “[Label1ID].innerHTML = ‘boo!’;”
Dim scriptKey As String = “SayBoo”
Dim addScriptTags As Boolean = True

Protected Sub Page_Load(ByVal sender As Object, _
ByVal e As EventArgs)

script = script.Replace(“[Label1ID]”, Label1.ClientID)

ClientScript.RegisterStartupScript( _
Me.GetType(), scriptKey, script, addScriptTags _
)

End Sub