Kabolte

I'm working on my own mod, and I have a couple questions about scripts. 1. How would I make a script that affects every variety of a certain type of weapon, for example, glass shortswords? Would I have to use an array and add each individual weapon? 2. How can I get the reference id(or whatever it is) of someone that is attacked with a certain weapon, say, a silver longsword? I want it to apply to everyone using that weapon, not just me. 3. How can I make an opponent stagger back or fall down?