.Menu
{
background:transparent url(images/blueslate_backgroundOVER.gif) repeat-x;
text-align:center;
font-size:11px;
border: solid 1px #fff !important;
}
.menuhover
{
color:#fff;background:transparent url(images/blueslate_backgroundOVER.gif) no-repeat top center;
}
<asp:Menu ID="Menu1" runat="server" Orientation ="Horizontal" CssClass ="Menu" Font-Names="Verdana" ForeColor ="Blue" Width="800px">
<StaticMenuItemStyle Height ="40px"/>
<DynamicMenuItemStyle CssClass ="Menu" Height="40px" HorizontalPadding="25px" />
<dynamichoverstyle CssClass ="menuhover" />
<StaticHoverStyle CssClass ="menuhover" />
<Items>
<asp:MenuItem Text="My Menu">
<asp:MenuItem Text ="My profile" Enabled ="true" ></asp:MenuItem>
<asp:MenuItem Text="my Forum" Enabled ="true"></asp:MenuItem>
...
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