Commas needed here.

The fact that these syntax errors are present tells me that you haven't bothered to test this code. The simplest way to do this is to go to a user talk page, open your browser's JavaScript console (F12, then switch to Console tab), paste the entire friendlytalkback.js file, and press Enter. If you get a syntax error, go back and fix your code. Then try opening the TB tab of Twinkle, and see if that works.