[Camino] open new tab by middle clicking bookmarks?

[Ryan Williams]

Is this possible in Camino? I switched from Firefox and have been  
missing this feature...I use the middle click on links in web pages  
to open new tabs all the time, I would love to be able to do the same  
from my bookmark menu (or bookmarks bar). I have CamiTools and  
several other plugins installed, and I checked the hidden user  
preference documentation, but I can't seem to find any mention of  
this feature.