TOPIC: Target a frame with DT Register plugin

I have a list of events. When a user clicks DETAILS, a popup shadowbox opens with all of the detail of that event (event article). Inside the article, I have placed the DT Register plugin with the appropriate event id. Here is where it gets funky, is it possible to get that DT link to target=_top so I can get the shadowbox to close? Otherwise the registration opens in the popup window. I hope this makes sense?