Creating A Multiple Explosion

I was wondering if there is a way to create a multiple explosion when you trigger a button , for example


http://img703.imageshack.us/img703/1607/explodey.jpg


When you hit the button the first part explodes then a second delay until next one goes and so on ...

And ideas if this would work , or it's impossible

create a func_button or a trigger_once/multiple

create a multi_manager and give it a name
create env_explosions and give them some namens

add the env_explosions in the multi_manager
(should the first one explode immediatly give it a value of 0
and the rest some second spare time for a delay but every explosion which follows the other needs to be summed up with the last value egg explosion 2 was at value 2 the other should follow up on second 4 you need to give it the value 4 instead)

the last thing is then to give the trigger the name of the multi_manager


but becareful env_explosion let the dedicated server in cstrike crashing..