Child Menu not display in IE 10

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.NET3.5

C#

.NET

Hi,
I have used simple .net menu tag to create a menu. and when I run from local machine in IE 10 then it will display properly.
But when I publish code on server and browse, then child menu is not display in IE 10.
So please give me suggestion.
Find Code Below for More Information

<div>
    <asp:Menu ID="mnuMainMenu" runat="server" Orientation="Horizontal" >
    <Items>
        <asp:MenuItem  Text="" Selectable="true">
            <asp:MenuItem NavigateUrl="" Text="Master Data Configuration"
                Value="MasterDataConfiguration">
                <asp:MenuItem NavigateUrl="" Text="Units"
                    Value="Units"></asp:MenuItem>
                <asp:MenuItem NavigateUrl ="" Text ="Position Types"
                    Value="PositionTypes"></asp:MenuItem>
            </asp:MenuItem>
            <asp:MenuItem Text="Security Configuration" Value="SecurityConfiguration">
                <asp:MenuItem NavigateUrl="" Text="COS Executives"
                    Value="ExecutivesCOS"></asp:MenuItem>
                <asp:MenuItem NavigateUrl="" Text="HR Managers"
                    Value="HRManagers"></asp:MenuItem>
                <asp:MenuItem NavigateUrl="" Text="Plant Personnels"
                    Value="PlantPersonnel"></asp:MenuItem>
            </asp:MenuItem>
        </asp:MenuItem>
    </Items>
</asp:Menu>
</div>