JQuery, JavaScript & Update Panel... Calling JavaScript Function on Postback of Update Panel

An UpdatePanel completely replaces the contents of the update panel on an update. This means that those events you subscribed to are no longer subscribed because there are new elements in that update panel.

What I've done to work around this is re-subscribe to the events I need after every update. I use$(document).ready() for the initial load, then use Microsoft's PageRequestManager (available if you have an update panel on your page) to re-subscribe every update.
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$(document).ready(function() {
    // bind your jQuery events here initially
});

var prm = Sys.WebForms.PageRequestManager.getInstance();

prm.add_endRequest(function() {
    // re-bind your jQuery events here
});

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The PageRequestManager is a javascript object which is automatically available if an update panel is on the page. You shouldn't need to do anything other than the code above in order to use it as long as the UpdatePanel is on the page.

If you need more detailed control, this event passes arguments similar to how .NET events are passed arguments (sender, eventArgs) so you can see what raised the event and only re-bind if needed.

For Example:

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<script src="../Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> 

<script src="../Scripts/ScrollableGridPlugin.js" type="text/javascript"></script>

    <script type="text/javascript" language="javascript">    

    $(document).ready(function() 

    {

        $('#<%=dgService.ClientID %>').Scrollable(); // bind your jQuery events here initially

    });

    var prm = Sys.WebForms.PageRequestManager.getInstance();

    prm.add_endRequest(function() {

    // re-bind your jQuery events here

        $('#<%=dgService.ClientID %>').Scrollable();  // re-bind your jQuery events here

    });

    </script>

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In this example i have attached the one J query & JavaScript files.

and bind the functions to the controls........

I hope this article will help you.......