Datagrid That Uses Scroll Bars ?

I am looking for a Javascript Datagrid that will populate based on database driven data, but also allows the data in the list to scroll sepereately from the Header. This is so I can allow users to sort data without making another database call on each sort.

For instance, I have used this Javascript and it looks and works great, except the header scrolls with the data....

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That works great with dynamic database data....but the header dissapears when using a scroll bar.

I am looking for something that works like this, but is not ajax and does not query the database with each sort. [url]

See how the data scrolls, but the header stays put? The pagination onthat example is not needed and in fact I would rather it didn't have that capability.

I want that functionality, but with Javascript.