Hi Kishor,
Please check the following blog post for more information on the subject:
http://blogs.telerik.com/supportdept/posts/09-05-05/executing_javascript_function_from_server-side_code.aspx
If you still experience problems after that, open a support ticket and send us a sample page that reproduces the problems so we can check it.
Best wishes,
Georgi Tunev
the Telerik team
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