Manage Multiple Sounds with one function

I have set this:


mp3_1 = new Sound(); 
mp3_1.loadSound("1.mp3", true); 
mp3_2 = new Sound(); 
mp3_2.loadSound("2.mp3", true); 

killsound = function(thatmp3) {
	thatmp3.stop();
}

In somewhere I set this:


killsound("mp3_1");

I want that “thatmp3” be the sound, so I can use the same function with many sounds.

Any suggestions?

Thanks.