Why is my table drilldown selecting the first column by default, regardless of what cell I click on?

Hi, I have a table with 5 headings.. each heading has a list of things underneath it.. I want to create drilldowns each time someone clicks on a cell. The issue I'm facing is that every time I click on a cell that isn't in the first column, it still selects the first column by default: ![alt text][1] This of course ruins my drilldown experience.. Basically each of those cells, when clicked, needs to display independent information based on specific things related to it..Thanks! [1]: /storage/temp/149201-issue.png