Hi any way to quickly hit a button to mute the phone when you go to sleep? Dont like my phone ringing when I am sleeping. On my G2 I just hold the power button and the mute option pops up. Or if I power on I can slide it to the right which mutes the phone. Side it left and it powers on. My gf has the HTC Desire Z I cant seem to find it. Only way I found out was to adjust the volume to lowest setting but this takes time there must be an easier way. any suggestions?