Adam:
m234,
Here is the solution:
Set the EnablePartialRendering property of ScriptManager to false.
Code:
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="false">
</asp:ScriptManager>
1) Thank you for answer.
2) This do not work. (FireFox 2.0.0.3)
3) I am need PartialRendering.
Any idea?