Link to api.drupal hijacks firebug display

Great module/plugin. While test driving it on the demo pages, clicked one of the links on the SQL page, which links to the appropriate function definition page on api.drupal.org.

I expected the api.drupal page would load in a new tab, but instead it loaded in the firebug window. And it won't go away now. Every tab I click on (General, User, Node, etc.) loads the api.drupal site in the top half of the firebug window, then the firebug-generated info displays below (creating for a long scroll), and the generated info now takes on the larger css styles inherited from the api.drupal site.

There appears to be no back button, and resetting all firefox options did not fix it. The only thing that worked was to open a tab in a new window, and it appears as original. Only option I'm facing now is to close out my dozens of tabs and work in new window?

Or is there something I'm missing here? I liked the api link, but please make it load in new tab not the firebug window, or at least provide a way to ditch the api.drupal page from the firebug window.