Hello again,
 I want to make a switch with these textures : 
http://alexx860.free.fr/images/switchtex.JPG) 
 i want to overlap the texture byss_switch and byss_switch_locked and _open but i dont know how do this :confused:  
 Thx in advance 
 alexx860 :)
  
 
  
  
    Nobody have the answer to my question :confused:
  
 
  
  
    Easiest (non script/shader way) is:
 
 2 func_usables, one start_on, one start_off in the same place in your map. Texture the top of one with the first texture and the top of the other with your second texture.
 
 Give them both the same targetname
 
 Make a button/trigger nearby and set it's target value to the targetname above. When you hit it the two func_usables will toggle giving you the appearance of it turning on/off
 
 
 trigger_multiple--->func_usable(1)
 |
 |->func_usable(2)
  
 
  
  
    it work but i want to have the texture byss_switch glow in red when off and glow in green when is on.