The SlickGrid API has a public method called scrollRowIntoView(row, doPaging).
Where paraters are:
row - A row index.
doPaging - A boolean. If false, the grid will scroll so the indicated row is at the top of the view. If true, the grid will scroll so the indicated row is at the bottom of the view. Defaults to false.
So by issuing:
Will scroll the given row number into the viewport of your grid.