Power off question

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http://forums.androidcentral.com – I have the S3 with Jelly Bean 4.1 and I love it. When I turn off my phone I usually press and hold the phones power button on the right side until a window pops up giving me several options (Power off, airplane mode, silent, etc.). When I press the "Power off" option to shutdown the phone, another dialog displays "Your device will shutdown" with buttons for Cancel or Ok. This seems very redundant to me, so is there any way to disable the second dialog so that it powers off the first time? (HowTos)