In reply to Aaron Davis.

Aaron, sorry to hear that it isn't working for you. I recall having some quirks with single versus double quotes and with regards to JavaScript I'm a only at a cut&paste level of proficiency and even then it takes some trial and error. I would hope that John's version might work better as his JS skills are assuredly better than mine: https://johnjohnston.info/blog/re-re-browser-bookmarklets-for-giving-credit/.