I have the following ASP:Menu
<asp:Menu id="menu_mymenu" runat="server" OnMenuItemClick="menu_mymenu_Click">
<Items>
<asp:MenuItem Text="menu_1" Value ="menu_1">
<asp:MenuItem Text="menu_a" Value="menu_a" />
<asp:MenuItem Text="menu_b" Value="menu_b"/>
</asp:MenuItem>
</Items>
</asp:Menu>
On mouse over it displays submenus menu_a and menu_b. I would like the onclick on menu_1 to display the submenus menu_a and menu_b in the same way without posting back. Is there anyway to do this?