Customize the toolbar
You can add your most frequently used items to the toolbar. To see a description of what a toolbar item does, hold the pointer over it in the toolbar.
Change the toolbar
Choose View > Customize Toolbar (or Control-click the toolbar and choose Customize Toolbar from the shortcut menu).
Do any of the following:
Rearrange items in the toolbar: Drag them to a new location in the toolbar.
Add an item to the toolbar: Drag them to a new location in the toolbar.
Remove an item from the toolbar: Drag them to a new location in the toolbar.
Show only icons or only text: Choose an item from the Show pop-up menu.
Restore the default set of toolbar buttons: Drag the default set to the toolbar.