AJAX Scroll Issue with Div

[Nayan]

I am using RadAjaxManager and RadAjaxManagerProxy for achieving AJAX in my page.  I have asp:PlaceHolder which have all dynamic controls and i want to refresh those set of controls on AJAX call. I have put that in panel which i have placed in div to get the fix region with scroll bar.

<div id="dvQuestionSection" class="QuestionSection" onscroll="SetQuestionSectionScrollPos()">
    <asp:Panel ID="pnlPhFields" runat="server">
        <asp:PlaceHolder ID="phFields" runat="server"></asp:PlaceHolder>
    </asp:Panel>
</div>
 
After ajax call gets completed, scroll position of div gets changed. And what i have noticed is, this happens especially when I have RadEditor control in place holder and it set the scroll position so that RadEditor comes visible.

I want to be on same scroll position where I am invoking ajax call.
Any direction on this will be a great help.

Thanks
Paresh