goto autohotkey

Layer1:				;The first layer that is going to be active
MsgBox, A cow		;The messagebox
Goto, Layer3		;this ensures that it goes to layer3
Layer2:				;Layer2 is going to be skipped
MsgBox, A cat		;just like this messagebox
Layer3:				;After Layer1, This layer is going to be active
MsgBox, A mouse		;The Messagebox
Goto, Layer1		;This goes to layer1, so this goes on without a end