Hello

I have some buttons and I want to show or hide them when I click on the elements of the panel. This works on Chrome and Firefox but IE does not work, the buttons disappear when I click on any of the elements.

           <ext:Panel ID="panelPrincipal" runat="server"
                Height="600"
                Width="1200"
                Layout="ColumnLayout">
                <Items>
                    <ext:TreePanel ID="TreePanel1" runat="server"
                        ClientIDMode="Static"
                        Icon="BookOpen" 
                        Title="Glosario y preguntas frecuentes" 
                        ColumnWidth="0.3"
                        Height="600"
                        AutoScroll="true"
                        UseArrows="true">
                        <TopBar>
                            <ext:Toolbar runat="server">
                                <Items>
                                    <ext:ToolbarTextItem ID="toolbarBuscar" runat="server" Text="Buscar:" />
                                    <ext:ToolbarSpacer />
                                    <ext:TriggerField 
                                        ID="disparadorBusqueda" 
                                        runat="server" 
                                        EnableKeyEvents="true"
                                        ClientIDMode="Static">
                                        <Triggers>
                                            <ext:FieldTrigger Icon="Clear"/>
                                        </Triggers>
                                        <Listeners>
                                            <KeyUp Fn="filterTree" Buffer="250" />
                                            <TriggerClick Handler="clearFilter();"  />
                                        </Listeners>
                                      </ext:TriggerField>
                                </Items>
                            </ext:Toolbar>
                        </TopBar>
                        <Store>
                            <ext:TreeStore runat="server" ID="storeTree" OnReadData="NodeLoad">
                                <Proxy>
                                    <ext:PageProxy />
                                </Proxy>
                            </ext:TreeStore>
                            
                        </Store>
                        <Root>
                            <ext:Node NodeID="0" Text="Portales PRYBE" Icon="Sitemap" />
                        </Root>
                        <DirectEvents>
                            <ItemClick OnEvent="ClickNode">
                                <ExtraParams>
                                    <ext:Parameter Name="treenode" Value="node.id" Mode="Raw" />
                                </ExtraParams>
                            </ItemClick>
                        </DirectEvents>
                    </ext:TreePanel>

                    <ext:Panel ID="panelInf" runat="server"
                        StyleSpec="background-color:rgb(194, 194, 194); text-align:justify;"
                        Layout="ColumnLayout"
                        ColumnWidth="0.7"
                        Height="600"
                        AutoScroll="true">
                        <Items>
                            <ext:TextField ID="txtfieldNombreTermino" runat="server"
                                ColumnWidth="0.6"
                                PaddingSpec="10 0 0 40" 
                                LabelAlign="Top" FieldLabel="Nombre del termino"
                                Hidden="true"/>
                            <ext:ComboBox ID="cmbPortales" runat="server"
                                ColumnWidth="0.4"
                                PaddingSpec="10 20 0 20" 
                                LabelAlign="Top" FieldLabel="Portal del termino" 
                                EmptyText="Seleccione Sistema..." 
                                ForceSelection="true" QueryMode="Local" TypeAhead="true" 
                                StoreID="storePortal" DisplayField="NombreSistema" ValueField="Id"
                                Hidden="true"/>

                            <ext:Label ID="lblNombreTermino" runat="server"
                                StyleSpec="font-size:22px;"
                                PaddingSpec="10 20 30 40" 
                                ColumnWidth="1" />

                            <ext:TextArea ID="txtAreaDefinicion" runat="server"
                                FieldStyle="font-size:20px;"
                                PaddingSpec="10 20 30 40" 
                                ColumnWidth="1" 
                                ReadOnly="true"/>
                            
                            <ext:HtmlEditor ID="HtmlEditor" runat="server"
                                FieldStyle="font-size:20px;"
                                Height="470"
                                PaddingSpec="10 20 30 40" 
                                ColumnWidth="1" 
                                Hidden="true"/>
                        </Items>
                        <Buttons>
                            <ext:Button ID="btnNuevoTermino" runat="server"
                                Icon="New"
                                Text="Agregar termino"
                                OnDirectClick="btnNuevoTermino_Click"
                                Hidden="true"/>
                            <ext:Button ID="btnEditarTermino" runat="server"
                                Icon="ApplicationEdit"
                                Text="Editar termino"
                                OnDirectClick="btnEditarTermino_Click"
                                Hidden="true"/>
                            <ext:Button ID="btnEliminarTermino" runat="server"
                                Icon="Delete"
                                Text="Borrar termino"
                                OnDirectClick="btnEliminarTermino_DirectClick"
                                Hidden="true"/>
                            
                            <ext:Button ID="btnGuardar" runat="server"
                                Icon="DiskBlack"
                                Text="Guardar"
                                Hidden="true"
                                OnDirectClick="btnGuardar_Click" />
                            <ext:Button ID="btnCancelar" runat="server"
                                Icon="Cancel"
                                Text="Cancelar"
                                Hidden="true"
                                OnDirectClick="btnCancelar_Click"/>
                        </Buttons>
                    </ext:Panel>
                </Items>
            </ext:Panel>
public void ClickNode(object sender, DirectEventArgs e)
        {
            string idNode = e.ExtraParams["treenode"] ?? "";
            string texto = e.ExtraParams["treenode"] ?? "";


            idNode = idNode.Substring(idNode.LastIndexOf("-") + 1);
            if (idNode.Contains("portal") || idNode=="0")
            {
                Session["Termino"] = null;
                Session["Id_Termino"] = -1;
                btnEditarTermino.Hide();
                btnEliminarTermino.Hide();
                return;
            }
            else
            {
                btnEditarTermino.Hidden=false;
                btnEliminarTermino.Hidden=false;
            }
           
            
        }