Hey @mizal, I'm having a bit of trouble with this myself with an added button at the top of the page, but I'm using CSS/HTML. What I'm doing is using a div (and I had a bunch of help getting that right from Ogre11, BradinDvorak and Killa Robot for that), but there are two cosmetic problems with what I have.
(1) My button doesn't have the translucency of the ones at the top of the page.
(2) The hover color is the one I'm using for bottom links (probably because I've just added a permanent link which is positioned at the top of the page rather than a real button).
Could I get a little help on this? I'd like to work with what I have, but if you could show me this other script I'd appreciate it. Also if posting my own script or PMing it will help you (or anyone else) help me to try to get the standard translucence and hover color (and even the font is a little off), of course I'd do that.
I have zero familiarity with Javascript, and I'm guessing I'm going to have to learn some to do this as well as possible. Any help would be appreciated.
EDIT- Oh, wait... does that picture you posted have the script I'd need? It looks a lot like what's on the page source.