Control an external instance?

[FONT=Arial][SIZE=2][COLOR=#000000]Hello i have this code:[/COLOR][/SIZE][/FONT]

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auto.addEventListener("click",loadAlbum);
function  loadAlbum(event:Event):void { parent.portafolio.loadAlbum("perro","1");  }

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[SIZE=2][COLOR=#000000][FONT=Arial]which controls a component instance, i want to use this code in a button on another swf file, how can i do this?, is posible to use a statement, i[SIZE=3][COLOR=#0a0a0a][SIZE=2] do not understand the concept of target path[/SIZE] [SIZE=2]yet[/SIZE][/COLOR][/SIZE][/FONT][/COLOR][/SIZE]

[FONT=Arial][SIZE=2][COLOR=#000000]Thank you.[/COLOR][/SIZE][/FONT]