<asp:UpdatePanel ID="UpdatePanel1" runat="server">
    <ContentTemplate>
        <asp:MultiView ID="multi" runat="server" ActiveViewIndex="0">
            <asp:View ID="step0" runat="server">
            <table width="100%"><tr align=center ><td>
                <asp:Label runat="server" Text="Вы попали на сайт ..."></asp:Label></td></tr>
                <tr align=center ><td><asp:Image ID="Image2" runat="server" ImageUrl="gears_an.gif" /> </td>
            </tr></table>
            </asp:View>
            <asp:View ID="step1" runat="server">
                <asp:Label ID="Label1" runat="server" Text="А вот и сам сайт<img src="http://www.aspnetmania.com/images/em/regular_smile.gif" border="0" alt="Улыбка" />"></asp:Label><br/>
            </asp:View>
        </asp:MultiView>
        </ContentTemplate>
    </asp:UpdatePanel>
    <asp:Timer ID="Timer1" runat="server" Interval="1" OnTick="loading">
    </asp:Timer>

    Protected Sub loading(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        Timer1.Enabled = False
        multi.ActiveViewIndex = 1
    End Sub