A method for displaying data on a portable electronic device first displays graphical data on a graphical display. An event that is independent of the graphical data is received at the device. Responsive to the event, an event type is selected from a list that associates each of at least two event types with one of at least two display formats. A notifier of the event, in the selected format, is then displayed on the graphical display simultaneously with the graphical data. The formats are specific to the event types so that a user can decide whether to continue viewing the graphical data and not respond to the event notifier, or terminate the graphical data being displayed and respond to the event. Examples of events include an alarm from a locally stored user calendar, an incoming phone call, an SMS message, and an email. A computer program and a device are also detailed.