can sum one help me make this effect

[Shanghai]

i want this invisible effect same ......
but i want when u just klick on icon u get invisible...
u dont need to klick on unit when u wanna get invisible :S

 

[Hemske]

I will help you.. ill upload a map with the trigger
------------------
Edit, sorry, no time now :S Gotta go.

 

[Huurka]

I'll do it! Will edit it later with the map.

Aaaaaand it's there!