Thanks for that ... can't believe I missed that. Actually can't believe it was working at all in the first place!
OK, so I changed this line and added the color blue to make it obvious what's going on in my program.
el.parentNode.cells[i].style.backgroundColor='blue';
For some reason it highlights the entire row but doesn't change the bgcolor in the code piece I'm using to indicate a saved traffic light from the database (here):
Code:
<td bgcolor=\"green\" onclick=\"togCell('#green'); makePOSTRequest('$javvar', '1')\"> </td>
Any ideas why it's not changing the bgcolor?