Option to cut off notification sounds

view story

http://forum.xda-developers.com – Hi All I did a few searches throgh this forum but couldn't find the answer I was after. Basically I'm after some way to cut off or override the sound of notifications while the phone is in my pocket. I had thisfeature on my Atrix using MIUI so unsure if it's a feature/option relating to MIUI itself but would very much like the same functionality using the i9505. Does anyone know how I might achieve this? Thanks in advance (HowTos)