Earlier this year I mentioned that I had developed a fix for Mozilla bug 23460. After applying the fix, Mozilla will show bookmark URLs in the statusbar when you hover over bookmarks in the personal toolbar or bookmark menu. Although I wrote the description of the fix for Mozilla developers, interested Mozilla users have asked about what they need to do to patch their Mozilla version. I’ve added instructions to help you.
I know this works with Mozilla 1.4. I’d imagine if you make the edits instead of just snagging the patch files it would apply to any recent version of Mozilla including 1.5 and 1.6, but I haven’t tried it. I also got a report that applying the file uncompressed worked better for one user. Not quite sure why that would be—perhaps it depends on your zip tool—but thought I’d point it out.
Of course, you could also use Mozilla Firebird instead as it apparently already supports this feature.