#NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
; #Warn  ; Enable warnings to assist with detecting common errors.
SendMode Input  ; Recommended for new scripts due to its superior speed and reliability.
SetWorkingDir %A_ScriptDir%  ; Ensures a consistent starting directory.

PrevButton := 1
NewButton := 0

Joy28::
    NewButton := 1
    ProcessKeys()
return

Joy29::
    NewButton := 2
    ProcessKeys()
return

Joy30::
    NewButton := 3
    ProcessKeys()
return

ProcessKeys() {
    global
    local dif := (PrevButton - NewButton)
    local times := Abs(dif)
    if (dif > 0) {
        Send {PgDn %times% }
    } else if (dif < 0) {
        Send {PgUp %times% }
    }
    PrevButton := (NewButton)
}