Hello, thank for you reply.
no, iam not using any css style.
here is the aspx, thanks in advance.
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Always">
<ContentTemplate>
<telerik:RadTreeView runat="server" ID="TrStd" Skin="Silk">
<ContextMenus>
<telerik:RadTreeViewContextMenu ID="MenuNuevo" runat="server">
<Items>
<telerik:RadMenuItem Value="Nuevo" Text="7728#Nuevo Template" ImageUrl="../imagenes/24x24/new.png"></telerik:RadMenuItem>
</Items>
<CollapseAnimation Type="none"></CollapseAnimation>
</telerik:RadTreeViewContextMenu>
<telerik:RadTreeViewContextMenu ID="Editar" runat="server">
<Items>
<telerik:RadMenuItem Value="Editar" Text="Editar" ImageUrl="../imagenes/24x24/edit.png"></telerik:RadMenuItem>
</Items>
<CollapseAnimation Type="none"></CollapseAnimation>
</telerik:RadTreeViewContextMenu>
</ContextMenus>
</telerik:RadTreeView>
<dx:ASPxPopupControl ID="mipop2" runat="server" AllowDragging="True"
AllowResize="True" ClientInstanceName="mipop2"
FooterText="1411#Puede ajustar el tamaño de esta ventana"
HeaderText="7728#Nuevo Template" Height="430px" Modal="True"
PopupHorizontalAlign="WindowCenter" PopupVerticalAlign="WindowCenter"
Theme="SoftOrange" Width="780px">
<%--<ClientSideEvents CloseButtonClick=" function(s, e) {window.location.reload(false);}" />--%>
<contentstyle>
<paddings padding="0px" />
</contentstyle>
<contentcollection>
<dx:PopupControlContentControl ID="PopupControlContentControl2" runat="server"
SupportsDisabledAttribute="True">
<br />
</dx:PopupControlContentControl>
</contentcollection>
</dx:ASPxPopupControl>
</ContentTemplate>
</asp:UpdatePanel>