Terminal apparatus and processing program thereof

A non-transitory computer-readable storage medium having a program of a portable terminal apparatus including display processing that simultaneously displays a plurality of screens stored thereon that is executable by a computer, comprising:

• instruction processing for generating, in accordance with an operation for activating a first function, a display instruction of a first screen which is displayed via the first function, the first function including an address book function, an outgoing call history function, an incoming call history function, a digital television function, a digital radio function, an e-mail function, a movie replay function, and a music replay function;
• judgment processing for judging, when the instruction processing generates the display instruction while a second screen which has been displayed via a second function is displayed on the display screen, one of (i) an operation time required for the operation for activating the first function and (ii) a number of the operation required for the operation for activating the first function;
• identification processing for identifying a layout pattern for a simultaneous display from a plurality of preset layout patterns for the simultaneous display based on one of the operation time and the number of the operation judged by the judgment processing;
• and
• display control processing for controlling so as to simultaneously display the first screen and the second screen in the layout pattern identified by the identification processing.