//zm2.Heal.lv Buyscript by GuskiS, wheel.cfg
//Change "invnext" and "invprev" to your binds.
bind "MWHEELDOWN" "invnext"
bind "MWHEELUP" "invprev"
bind "0" "slot10"
bind "1" "slot1"
bind "2" "slot2"
bind "3" "slot3"
bind "4" "slot4"
bind "5" "slot5"
bind "6" "slot6"
bind "7" "slot7"
bind "8" "slot8"
bind "9" "slot9"
///

//zm2.Heal.lv Buyscript by GuskiS, zp.cfg
//To execute script, bind "J" "exec zp.cfg"
bind "0" "slot10; exec wheel.cfg"
bind "1" "slot1; exec wheel.cfg"
bind "2" "slot2; exec wheel.cfg"
bind "3" "slot3; exec wheel.cfg"
bind "4" "slot4; exec wheel.cfg"
bind "5" "slot5; exec wheel.cfg"
bind "6" "slot6; exec wheel.cfg"
bind "7" "slot7; exec wheel.cfg"
bind "8" "slot8; exec wheel.cfg"
bind "9" "slot9; exec wheel.cfg"
bind mouse3 "say items; exec zp.cfg"
bind "MWHEELDOWN" "slot9"
bind "MWHEELUP" "slot8"

This script contains 2 files. wheel.cfg and zp.cfg
Copy code to right files, put them in cstrike folder and then write bind "J" "exec zp.cfg" in console.
After that you go to the ZP server, press J button, script will start. After that, press MOUSE3(wheel button) to activate. It will show up Extra items menu in which you can scroll between pages by wheelup/down, after that select your extra item and script will reset itself, so again you have to press mouse3 to buy.
If you want, you can change "invnext" and "invprev" to your binds in wheel.cfg file.