To hide navigation ( i.e the forward backward buttons) in Firefox go to View -> toolbars ->Customize. Now there will be a new window that will have item which you can drag onto the tool bars. Conversely you may also drag items from the tool bar to the window. so click the navigation button- HOLD then drag and drop into the new customize toolbar window that is open. That's it you navigation bar is gone. You can bring it back any time you want.
Warning - There is a small problem. If the localstore.rdf in mozilla installation folder gets corrupt then you may have some problem getting the navigation bar back. But its rare and it can be fixed easily too. Using the default settings.
On Firefox, you can show the address tool on the taskbar by clicking Firefox > Options > Navigation Toolbar. Make sure there is a checkmark next to Navigation Toolbar to display the address bar.
click Ctrl+w
Hide Caption, exactly addons you need !
To show or hide the "Navigation toolbar" or "Bookmarks Toolbar" included with Firefox (both are shown by default) or to show or hide other toolbars added to Firefox, go to the "View" menu, select "Toolbars" and click on a listed toolbar to select or deselect the toolbar. Toolbar add-ons from third-party software providers can be installed in Firefox by visiting a website and clicking an "Install' link. If you want to delete those toolbars just uninstall the add-on that installed it. To do so, go to Tools - Addons - find the add-on that installed the toolbar, and click Uninstall.
Shutter Bar Open/Close
You can hide it by right-clicking a blank area of the navigation toolbar.
You probably accodently chose to hide your toolbar. Just hit F11 to restore it.
Select View -> Toolbars -> Navigation toolbar
When using Google Chrome, Mozilla Firefox, Opera, or Microsoft Internet Explorer press the F11 key.
If you have lost it by pressing the View options on your windows explorer check the View options in file and browse for an address bar. If you are using firefox then click Veiw, toolbars and "Navigation Toolbar" to bring it back. If you are using Apple Mac I am not very sure.
Most distribution have firefox installed by default. But if it isn't you can try type these into the command line: sudo apt[-get] install firefox sudo yum install firefox sudo dnf install firefox sudo aptitude install firefox sudo urpmi firefox sudo installpkg firefox.tgz sudo emerge firefox sudo pacman -S firefox
What do you mean by "firefox button"