Can I define Alt key menu keyboard shortcuts for bookmarks in Firefox 3.6?

Question

Can I define Alt key menu keyboard shortcuts for bookmarks in Firefox 3.6?

Example:

Tropical Weather is in the Bookmarks menu. A keyboard-only way to use this bookmark is:

Alt + B + <press down arrow key a number of times> + Enter

I would like to be able to do it this way:

Alt + B + W

Where the association of the underlined letter in the bookmark menu, W, to Tropical Weather is user-defined.

Is it possible?

Answer 1

Not normally, but this firefox add-on lets you do that. https://addons.mozilla.org/en-US/firefox/addon/141859/

Answer 2

It might not be possible as described, but it is possible to come very close with only an extra press of the Return key:

When the bookmarks menu is open pressing the first letter of an entry will jump to that entry and pressing Return will open that entry. In the example the letter would be T:

Alt + B + T + Return