Updating an elapsed time column on grid per row

Hi,

I have a gird that would have similar information:

<UNIT ID> <ELAPSED TIME>

For example:

Unit 102 00:00:32
Unit 103 00:04:15

So, unit 102 has an elapsed time of 32 seconds, while unit 103 has an elapsed time of 4 minutes, 15 seconds.

I need to have that timer on each row update every second (or even minute) but without refreshing the whole grid.

Is there a timer event I can use? If not, I’m assuming I’ll have to use javascript, but not sure how I would access the elapsed time column.

The elapsed time would be calculated from another column (preferably hidden) of the last status update (so elapsed time would equal time now minus last status update time)

Thank you.