[Resolvido] TreeView não funciona no firefox

Bom dia

Tenho uma aplicaçao administrativa que possui um treeview dentro de um frame, ela roda normal no IE, mas no Firefox e no Google Chrome não aparece os nós filhos qdo clico no nó pai, ou seja, nao expande as opções.

Preciso que a estrutura que está feita seja mantida, mas que funcione em todos os navegadores.

Segue o código abaixo:

AdmDefault.aspx

<frameset border="0" frameSpacing="0" rows="60,89%" frameBorder="0">
<%-- Página AdmHeader.aspx contém o cabeçalho da página --%>

 <frame name="top" marginWidth="0" marginHeight="0" src="ADMHeader.aspx" frameBorder="0" noResize scrolling="no">
 <frameset border="0" frameSpacing="0" cols="170,*" frameBorder="0">
 <%-- Página ADMMenu.aspx contém o treeview que é o menu --%>
 <frame name="menu" marginWidth="0" marginHeight="0" src="ADMMenu.aspx" frameBorder="0" noResize scrolling="auto">
 <%-- Página ADMBranco.aspx área onde o conteudo vai ser apresentado--%>
 <frame name="main" marginWidth="0" marginHeight="0" src="ADMbranco.aspx" frameBorder="0" noResize scrolling="auto">
 </frameset>
</frameset>

AdmMenu.aspx

<iewc:treeview id="treeMenu" width="100%" runat="server" ShowLines="False"
ShowToolTip="False" ShowPlus="False" BorderWidth="0px"
BorderColor="Transparent" BackColor="Transparent"
CssClass="menutree" EnableViewState="False">
</iewc:treeview>

AdmMenu.aspx.vb

Imports System.Data.SqlClient
Imports Microsoft.Web.UI.WebControls
Imports Sinasa.Db
Imports Sinasa.Util

Partial Class ADMMenu
Inherits System.Web.UI.Page
Protected WithEvents datMenu As System.Web.UI.WebControls.Repeater
Protected WithEvents datSubmenu As System.Web.UI.WebControls.Repeater

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

If Not Page.IsPostBack() Then
BindMenu()
End If
End Sub

Private Sub BindMenu()
Dim nodeMenu As TreeNode
Dim nodeSub As TreeNode
Dim sdr As SqlClient.SqlDataReader
Dim stAuxLink As String

Try
'Verifica a qual menu o usuario tem acesso

sdr = Users.ListAppMenu(Page.User.Identity.Name, "ADMIN", True)

'Populate the TreeView from the DataSet.
Dim stGroupId As String = ""

While sdr.Read

If IsDBNull(sdr("stParentAppMenuId")) Then
nodeMenu = New TreeNode
nodeMenu.Text = sdr("stCaption")
nodeMenu.Expandable = ExpandableValue.Always

If Not IsDBNull(sdr("stWebLink").Value) Then
stAuxLink = sdr("stWebLink")

If InStr(stAuxLink, "default.aspx") > 0 Then
stAuxLink += "&stUserID=" & Page.User.Identity.Name.ToString
End If

nodeMenu.NavigateUrl = "javascript:Call('" & stAuxLink & "');"
End If

nodeMenu.DefaultStyle.CssText = "FONT-SIZE: 10px; FONT-WEIGHT: BOLD; PADDING: 2px; FONT-FAMILY: VERDANA,ARIAL; COLOR:# #043c75; TEXT-DECORATION : none; WIDTH: 150px"
nodeMenu.HoverStyle.CssText = "WIDTH: 150px"
treeMenu.Nodes.Add(nodeMenu)
stGroupId = CSDb.CString(sdr("stAppMenuId"))

Else

nodeSub = New TreeNode
nodeSub.Text = sdr("stCaption")
nodeSub.ImageUrl = CSDb.CString(sdr("stImage"))
'nodeSub.HoverStyle.CssText = "FONT-SIZE: 10px;COLOR: #043c75;TEXT(-DECORATION) : underline()"
nodeSub.DefaultStyle.CssText = "FONT-SIZE: 10px; FONT-FAMILY: VERDANA,ARIAL; COLOR: #043c75;TEXT-DECORATION : none; WIDTH: 118px "
'nodeSub.SelectedStyle.CssText = ""

If Not IsDBNull(sdr("stWebLink")) Then
stAuxLink = sdr("stWebLink")

If InStr(stAuxLink, "default.aspx") > 0 Then
stAuxLink += "&stUserID=" & Page.User.Identity.Name.ToString
End If

nodeSub.NavigateUrl = "javascript:Call('" & stAuxLink & "');"

End If

nodeMenu.Nodes.Add(nodeSub)

End If

End While

Catch ex As Exception
Throw ex

Finally
CSDb.CloseRead(sdr)
End Try

End Sub
End Class