Can we set the default attribute value globally of a ScriptManager control in an asp.net 3.5 website?

Question

Want to set the default value of the attribute of all the ScriptManager control.

<asp:ScriptManager ID="ScriptManager1" LoadScriptsBeforeUI="false" runat="server" ></asp:ScriptManager>

Keep the LoadScriptsBeforeUI to "false" for all the ScriptManager control.