NSTableView Behavior (Do I need subclassing?)

Hi,

I have a question and I’m not 100% sure it’s completely AppleScript related but I’m going to shoot it anyway. I have a table view and when I drop something on it, I get a blue focus inside the table view (not the first responder as far as I can tell). Now, iTunes has the same behavior but in iTunes the color of the line is a lighter blue and the line is thicker. I have added a picture to explain it better. I want to achieve the same thing but I’m not sure that I have to subclass something or that I can just set it somewhere.

The Image: http://img502.imageshack.us/img502/2871/70857947.png

Thanks in advance.