Use cross-browser approach for displaying estimated/elapsed time below progress bar in Admin Console

In In-Portal's Admin Console there is a snippet, that allows to easily display a progress bar, which info is updated via ajax queries.

From some time now Google Chrome has made a change, where you can't change a cell contents of a table via JavaScript if there are 2+ changeable cells in a table. This is exactly the case, why progress bar moves in Google Chrome, but estimated/elapsed times are always displayed as 0.