Grid contains more columns than fits to screen. Horizontal scrollbar is present.
Code below is used to keep horizontal position based on http://stackoverflow.com/questions/6723136/jqgrid-inline-edit-whole-row-but-focus-on-cell-clicked-to-enter-edit-mode
and http://www.trirand.com/blog/?page_id=393/help/inline-edit-problem-with-scrolling/

If scrolled horizontally, click in row displays always leftmost columns and only after that scrolls
to current horizontal offset.

How to remove this flash ?