(no subject)

How do I stop Firefox from overwriting the currently open tabs when I right-click and select "Open in tabs" for a bookmark folder? I feel like I'm just missing a checkbox in the tabbing or Tab Mix Plus extension somewhere and my eyes are glazing over.

edit: Actually, I think what I want is to be able to do this on the fly, because sometimes I do want to overwrite them and sometimes I don't, but if I can only have it one way, I'd rather it be "not overwrite".

(no subject)

How do I stop Firefox from overwriting the currently open tabs when I right-click and select "Open in tabs" for a bookmark folder? I feel like I'm just missing a checkbox in the tabbing or Tab Mix Plus extension somewhere and my eyes are glazing over.

edit: Actually, I think what I want is to be able to do this on the fly, because sometimes I do want to overwrite them and sometimes I don't, but if I can only have it one way, I'd rather it be "not overwrite".