This are some great tricks whixh animates your mozilla firefox window in different ways

Just enter the Blue coloured text in mozilla address bar and press enter to see magic

chrome://global/content/alerts/alert.xul
Shows dancing firefox.

chrome://browser/content/browser.xul
Opens another Firefox inside a tab in the the existing Firefox window.

chrome://browser/content/preferences/preferences.xul
Opens the Options dialog box inside the Firefox tab.

chrome://browser/content/bookmarks/bookmarksPanel.xul
Opens the “Book Marks Manager” inside a tab in the Firefox window.

chrome://browser/content/history/history-panel.xul
Opens the History Panel in the Firefox tab.

chrome://mozapps/content/extensions/extensions.xul?type=extensions
Opens the Extensions window in the current tab.

chrome://browser/content/preferences/cookies.xul
Opens the “cookies window” inside a tab in the Firefox window.

chrome://browser/content/preferences/sanitize.xul
Opens the “Clear Private Data” window inside the current tab.

chrome://browser/content/aboutDialog.xul
Opens the “About Firefox” Dialog box inside the tab.

chrome://browser/content/credits.xhtml
Opens a scrolling list of names. The one’s who we must thank for creating Firefox