var prefManager = Components.classes["@mozilla.org/preferences-service;1"] .getService(Components.interfaces.nsIPrefBranch); var autoUpdateBox; /* To add a new preference: 1) modify defaults/preferences/scholar.js 2) in this document: a) add var above b) add lines to init() function c) add line to accept() function 3) add a control to prefs.xul */ function init() { autoUpdateBox = document.getElementById('autoUpdateBox'); autoUpdateBox.checked = prefManager.getBoolPref('extensions.scholar.automaticScraperUpdates'); } function accept() { prefManager.setBoolPref('extensions.scholar.automaticScraperUpdates', autoUpdateBox.checked); }