A manual input navigation device and a sensor are utilized to manipulate
graphical elements in a mobile device graphical user interface. The
manual input navigation device generates an input navigation signal for
altering a relative position of the graphical element in the graphical
user interface, and the sensor measures a current tilt angle of the
mobile device. Upon the generation of the input navigation signal, the
current tilt angle is stored as a reference tilt angle. The relative
position of the graphical element is altered based on the difference
between the current tilt angle and the reference tilt angle.