Hello, If you only pin particular sites, the safest thing to do is to change the URLs the script can run on. # Open the Add-ons Manager, User Scripts category. # Click the Options button next to the script. # Enter the URLs in the Includes box, and check the "Disable this script's include patterns" option. ---- I'm not sure a user script can fetch the attribute values of a user interface element. Either way, I really don't recommend it.<br> For security reasons, Greasemonkey and Scriptish won't touch the '''chrome:''' scheme by default. It would be a bad idea to change this behavior, as it would change the permission for all scripts, including those you download from the web. You can change it by typing ''about:config'' into the address bar, then ''extensions.*.chrome'' into the search box there and double-clicking the respective preference to toggle it. If you still want to go down this road and you don't get an answer here, ask on * http://userscripts.org/forums