Temporary Glitch w/Drop-Down Bar -> Resolved.
Update: Resolved. Seems to have been a localized phenomenon. Thanks to several WordPress People who checked on this and made recommendations.
I write this on Sunday evening, around 5:50 p.m. Central U.S. time. I hope the drop-down bar under the tabs atop this page will be back working soon. This is the first time this has happened. Feel free to contact me at firstname.lastname@example.org and let me know if it starts working for you. Thank you.