Fixing scrollbar when record is updated

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Javascript

Java

struts

hai
i am working on Struts f/w.
==>My requirement is to fix the scroll bar when i update the record.
Breif explanation:
=================
I have 25 records in my page in assending/desending order ...
now i moved scroll bar to 20 th record.and update the 20th record ,then the updated record has to come any where in 25 records along with the Scrool bar.

Expected:Scroll bar must be fix ,where updated record is placed.