How to scroll to a Grid's row (focusRow, scrollTo doesn't work)

Hi,

How can I scroll the grid to a specific row?

I tried the following methods (suggested in this forum) and they didn't work for me:
(In this example, I try to scroll to row number 2).

1. method 1:

Code:

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grid.getView().focusRow(2);//Error: 'rows[...].childNodes' is null or not an object

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2. method 2:

Code:

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grid.scrollTo(2);//Error: Object doesn't support this property or method

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Any suggestions?
Thanks,
Maya