A communications network comprises a computer having a control panel application with controls for remotely controlling playback on a web browser of a wireless communication device; a wireless communications device; and data connection means between the computer and the device, such as a wireless network, Bluetooth\xae, or USB. When an electronic message is received, one or more language expressions associated with the electronic message are displayed to a user. The adding unit is provided corresponding to not all the light-emitting devices but some of the light-emitting devices.