A key has a varying response depending on the manner of depression. The panels are preferably fiber cement. Gap durations of from about 2 hours to about 48 hours are disclosed. However, if the icons that the moving cursor is approaching are so densely spaced that more than one icon comes within the halo, then all of the icons within this set of the plurality of icons is highlighted to give the user a more distinct choice. A hanger bracket is also provided. The self-adhesive frame comprises: a main body frame having the cathode plate sealing surface and the anode plate sealing surface; and a fixing side strip extending from the outer side of the main body frame.