A digital television including an interface to receive control signals from a remote controller; a screen; and a controller to execute an application related to a first icon within a menu when the controller receives a signal selecting the first icon within the menu from the remote controller, display a content of the executed application related to the first icon on the screen, enter into an edit mode of a second icon within the menu and display a first indicator for deleting the second icon as well as a second indicator for moving the second icon with displaying the content of the executed application related to the first icon in response to selecting an Up-key included in the remote controller, display a message verifying whether or not to delete the second icon from the menu in response to selecting an OK-key included in the remote controller after selecting the first indicator, delete the second icon from the menu and align other icons in a respective order in response to receiving a signal requesting for a deletion of the second icon through the message, and display the aligned other icons on the screen.