Stop phone from "waking up" when slider is open

[4 Door Skyline]

OK, this may seem like a stupid question, and probably something that has been answered before, but here it goes:

How do I stop the phone from "waking up" when the slider is opened? It annoys the shit out of me when it happens by accident.

Now if this has been answered, please dont just go and flame, point me in the right direction and I would appreciate it, if not, then please post a way (or prog) that I can use to fix this.

Thanks in advance.