$Var = "OFF"

HotKeySet ("{F7}" , "toggle")
HotKeySet ("{F8}" , "exit1")

While True

If StringCompare($Var, "ON")==0 Then

MouseClick ( "" )
Sleep(1000)

EndIf

WEnd

Func toggle()

If $Var == "ON" Then
    $Var = "OFF"
Else
    $Var = "ON"
EndIf

EndFunc

Func exit1()
    Exit
EndFunc