Deferred loading of RadGrid and strange error in firefox

I have some strange issues with loading of RadGrid. What I'm trying to accomplish is deferred loading user control from web service. This technique is explained on this link:

http://encosia.com/2008/02/05/boost-aspnet-performance-with-deferred-content-loading

In explorer and chrome works fine except, styling of a grid is not applied. In firefox, when I call web service from client side, I get blank screen and firebug shows error:

RadGridNamespace i开发者_开发问答s not defined

any ideas?

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It probably indicates RadGrid's scripts are not loaded on page by the time the grid object is initialized.

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Another thing is to get rid of the old Telerik ASP.NET grid and use its ASP.NET AJAX replacement. It is true ASP.NET AJAX control and supports declarative/programmatic client binding to web services as well as other cool client features.