1. A method comprising: executing first initialization code of a first divided-type application program during booting of said computer, and shifting said first initialization code of said first divided-type application program to an idle state before a boot completion of said computer; in response to first activation event after said boot completion, executing second initialization code of said first divided-type application program; and in response to a second activation event after said boot completion, executing first and second initialization code of a second divided-type application program.