Gravity gun questions

I have a few questions about altering the gravity gun.

How could I dis-allow the use of left click on the gravity gun? And how could I make it so that when you go to switch to another weapon, it drops whatever the gravity gun is holding and then switches to the selected gun.

[editline]09:06PM[/editline]

Answered my punting question myself.

I still need help on these problems. I was looking at **[Gamemode.GravGunPunt

http://wiki.garrysmod.com/favicon.ico](wiki.garrysmod.com/?title=Gamemode.GravGunPunt)** but I never got it to work correctly. Any help on how to get that working?

Simply return false inside a hook or overwrite it with return false.