What plugin or what else use to make cool small window appear when I move on to a link, displaying content of that link on en.wikipedia
On my previous computer, I had cool feature on my Firefox working on en.Wikipedia.
When I moved mouse coursor over link, automatically window appear with content of that link. Link was to wikipedia.
This windows was realy cool, cause I could move it, or click "more" so more content was displayed on this window. I could display few such windows on one page I was currently. I could move each where ever I wounted.
So beeing on one page on en.wikipedia I could see explanation of words used in this page, also used from wikipedia, just moving over this word, which was link, and I could display few such windows, that I could move through whole page.
I used older version of Firefox, on different computer, on Windows Vista laptop.
I searched for such plugin, but I couldn't find it. I find one kind a similar, QuickWiki, but much simpler, and much less functional.
I don't know how to find it. It was valuable tool for me. I used a lot of Wiki. Using this tool my job was much easier, as I didn't have to go to new page each time I wan't to check meaning of that word.
Please, help me if you know what to do or what tool to use.