Just copy the “chrome://…..” part and paste into your Firefox Browser’s Address bar and watch some tricks unfolding.
Better to backup your bookmarks and add-ons first, ahem, we cant predict what can happen, right?
chrome://global/content/alerts/alert.xul
It SHOWS Dancing Firefox.
chrome://browser/content/browser.xul
It Opens another Firefox inside a tab in the the existing Firefox window.
chrome://browser/content/preferences/preferences.xul
It Opens the Options dialog box inside the Firefox [...]




