Using javascript (bookmarklet) to save URL addresses from all open tabs

Hello guys!

I'm trying to create a bookmarklet that can save the URL addresses from all open tabs in Firefox and store them in the Bookmarks bar.

Thing is, I can only seem to access the URL of the current open and active tab by using window.location.href testmyspeed.onl scrabblewordfinder.vip solitaire.onl

Is there anyway to access the links from all the tabs using JS?

CHeers!