Home Double Click Extension 1.2.0 -- Works with Firefox 3.6.3 by modifying em:maxVersion to equal 3.6.* in the extension's install.rdf -- Personally I've chosen 'Homepage 2' to be chrome://browser/content/places/places.xul which enables Library to open in (new) tab whenever Homepage button in doubleclicked. Et voila!
This thing is truly great! It is true, a little confusing at the start to some degrees, but well worth it. Now the only issue is that it needs updated ; p Person's probably waiting for the final version of FF4. Of course I only used this to load chatzilla up since i didn't want it in favorites bar ; p
The documentation here could use a bit of work. There is no Options --> Home Page 2 in my tools menu. In fact, I can't see anything at all in my tools menu that wasn't there before I installed this add-on.
After a bit of searching, however, I *did* finally find a way to set the preference for the double-click behavior in Edit --> Preferences. It was sheer luck that I found it. On a busier day, I would have just uninstalled this add-on and been on my way. So, you know. The documentation really could be better. And I don't think that it ever hurts to use the Add Ons --> Preferences button for this purpose. It is the first place most people think to look, and it's often a little disquieting when there is nothing there.
Once I'd finally figured out how to set that second home page, this add-on did work for me. However, it was disturbingly slow. I mean, *really* slow. Nor was this a problem on the target's end: as a test, I'd set the second home page to point to an html file on my hard drive. This is a page that normally takes about a second to load. Through this add-on, it took a looooooong time.
So all in all, I'm not very impressed. It is a cute idea, but the implementation seems a bit lacking.
I really like this extension, but I wish it was compatible with 'scroll-clicking' in order to control if homepage 1 or 2 opens in a new tab or not. For instance, if I'm watching a youtube video and want to open up homepage 1 in a new tab by scroll-button clicking, I cannot do it. This would be a really useful feature. Otherwise I'm really happy to be able to house 2 homepages in one button.