Unusual results doing google search using Firefox with Windows 7

[alphabravo123g]

The results of the search show a web address with a tiny firefox logo above each result. I don't get this with my other Windows 7 computer. Did I pick up a virus? I see no other obvious issues.

 

[DelJo63]

FF now hasPIP (picture-in-picture) feature -- are you sure it's not one of those?