Hello,

It seems Sci-Hub is changing domains more often now. Several of the Sci-Hub buttons in this script are no longer working and should be removed. This webpage lists the current Sci-Hub domains:

https://whereisscihub.now.sh/

At the bottom of the page is a link that can be bookmarked to an always up-to-date Sci-Hub link. Perhaps the script could make use of that as well?

Thanks!