UW-Madison Libraries has made available a Remote Access Bookmarklet.
“If you have a database url in your browser that doesn’t contain ezproxy.library.wisc.edu, you can identify yourself as a valid UW-Madison user by clicking on the remote access bookmarklet in your list of bookmarks. This will redirect you to a page where you can login with your NetID and gain access to licensed content.”
Get the Remote Access Bookmarklet.