I want to add a scroll option to the Firefox awesome bar's drop down menu.
Exactly what it says in the above question, I don't want to know how to add vertical or horizontal scroll bars to websites, all I want is the option to scroll down a list of addresses shown by the awesome bar.
Alla svar (3)
If you want more results to appear in that drop don list then you can increase the value of the browser.urlbar.maxRichResults pref on the about:config page.
You need to close and restart Firefox to make changes effective.
Results are not the issue, the issue is that I want a bar on the right side of the results list that allows me give it a compact look and still hold more than 6 results without it going all the way down the screen.
You can try to do this with code in the userChrome.css file.
Adjust the max-height to get the preferred behavior.
Add code to the userChrome.css file below the default @namespace line.
The customization files userChrome.css (interface) and userContent.css (websites) are located in the chrome folder in the user profile folder.
@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */
#PopupAutoCompleteRichResult { max-height: 100px !important; }