Vanilla 1 is no longer supported or maintained. If you need a copy, you can get it here
Download link: JQThickBox
From the ThickBox homepage:
Now developers can integrate ThickBox functionality into their extensions quickly and easily, without having to worry about conflicting with other extensions using older/different versions of ThickBox.
I'm using Klaus Hartl's ThickBox 2.1 variant
currently, as it seems that little bit better than the *ahem* vanilla ThickBox 2.1.JQuery extension
needs to be installed and enabled first in order for this to work.
+ Convince extension authors to support this package!
Thank you to Johan SundstrÃ¶m for the "#TB_window *" CSS trick
that was preventing me from releasing this.