Update table cells via prototype

[JD*]

I'm trying to set up a page that will use the prototype ajax.updater to update table cells. This is for an election, so I have a gird that has the candidate names across the top and the polling district along the side. What I'd like is for this page to watch another page, which will query my db every x seconds and pull the results. Then, if there is a change, have the first page see that change and update the appropriate table cell (possibly with the effect.highlight).

 

I have the table set up, and every cell has an id of the location_candidate (numerical ids) and I was following a tutorial on making a digg spy clone, but I got a little lost, so if anyone can help me on the way, I would much appreciate it.