Virtual Button Bar

Features Virtual Button Bar

*Now with unlimited colours**ROOT required for full functionality* Menu, Back and Search are rooted-only buttons - all others work on non-rooted devices.Emulates hardware keys (Home, Menu, Back etc) and overlays them on the screen, on top of all applications.
Single-swipe action (see video):• Choose the number of buttons you want, position them• Lock Screen animations including Gingerbread-style TV off (requires 2.2)• Change button function (vol up/down, lock device, expand Notification Bar, Camera, Search)• Alt-Tab functionality• Change Button sizes and colour• Adjustable Transparency• Separate, independent configurations for portrait and landscape
A fully-featured but time-limited trial is available.

To uninstall: If you've enabled Device Administration for the lockscreen, you need to disable it before uninstalling.
Uncheck the permission in-app or go to Settings -> Location and Security -> Select device administrators and uncheck Virtual Button Bar.