javascript help with variables

With some help, I wrote this javascript.

http://pastebin.com/uSSZp0j6

I don't understand how to add more than one variable to a variable, I need for there to be several "keycodes," not just one. Other than that, the script works fine.

>>14
What? It's the first time I post in this thread, no way I'd program in Java or JavaShit