I had a similiar situation and got this to work ==>
 

1. Insert an anchor anywhere in your module's .ascx file depending on where you want to go
   i.e. <a name="#SMC_TOP"></a>
   
2. Include the following in your .vb file:

#Region "PreRender"
        Private Sub Page_PreRender(ByVal sender As Object, ByVal e As system.EventArgs) Handles MyBase.PreRender

            Dim scriptbuilder As New StringBuilder
            scriptbuilder.Length = 0
            scriptbuilder.Append("<script language=""JavaScript"">")
            scriptbuilder.Append("window.location.hash=""#SMC_TOP"";")
            scriptbuilder.Append("</SCRIPT>" & vbNewLine)

            ' Inject Client-Side Script...
            If (Not Me.Page.IsClientScriptBlockRegistered("phdClientScript001")) Then
                Me.Page.RegisterClientScriptBlock("phdClientScript001", scriptbuilder.ToString)
            End If

        End Sub

#End Region

What I had works in "Internet Explorer" browser but not Firefox